Annotation of src/etc/netstart, Revision 1.105
1.1 deraadt 1: #!/bin/sh -
2: #
1.105 ! todd 3: # $OpenBSD: netstart,v 1.104 2005/04/04 04:26:27 djm 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() {
8: local _file="$1"
9: local _line
10:
11: {
12: while read _line ; do
13: _line=${_line%%#*} # strip comments
14: test -z "$_line" && continue
15: echo $_line
16: done
17: } < $_file
18: }
1.45 millert 19:
20: # Returns true if $1 contains only alphanumerics
21: isalphanumeric() {
22: local _n
23: _n=$1
24: while [ ${#_n} != 0 ]; do
25: case $_n in
26: [A-Za-z0-9]*) ;;
27: *) return 1;;
28: esac
29: _n=${_n#?}
30: done
31: return 0
32: }
1.81 angelos 33:
1.83 miod 34: # Start the $1 interface
35: ifstart() {
1.84 deraadt 36: if=$1
1.83 miod 37: # Interface names must be alphanumeric only. We check to avoid
38: # configuring backup or temp files, and to catch the "*" case.
1.84 deraadt 39: if ! isalphanumeric "$if"; then
1.83 miod 40: return
41: fi
42:
1.84 deraadt 43: ifconfig $if > /dev/null 2>&1
1.83 miod 44: if [ "$?" != "0" ]; then
1.89 markus 45: # Try to create interface if it does not exist
46: ifconfig $if create > /dev/null 2>&1
47: if [ "$?" != "0" ]; then
48: return
49: fi
1.83 miod 50: fi
51:
52: # Now parse the hostname.* file
53: while :; do
54: if [ "$cmd2" ]; then
55: # We are carrying over from the 'read dt dtaddr'
56: # last time.
57: set -- $cmd2
58: af="$1" name="$2" mask="$3" bcaddr="$4" ext1="$5" cmd2=
59: # Make sure and get any remaining args in ext2,
60: # like the read below
61: i=1
62: while [ i -lt 6 -a -n "$1" ]; do shift; let i=i+1; done
63: ext2="$@"
64: else
65: # Read the next line or exit the while loop.
66: read af name mask bcaddr ext1 ext2 || break
67: fi
68: # $af can be "dhcp", "up", "rtsol", an address family,
69: # commands, or a comment.
70: case "$af" in
71: "#"*|"") # skip comments and empty lines
72: continue
73: ;;
74: "!"*) # parse commands
75: cmd="${af#*!} ${name} ${mask} ${bcaddr} ${ext1} ${ext2}"
76: ;;
77: "bridge")
1.84 deraadt 78: cmd="echo /etc/hostname.$if: bridges now supported via bridgename.* files"
1.83 miod 79: ;;
80: "dhcp")
81: [ "$name" = "NONE" ] && name=
82: [ "$mask" = "NONE" ] && mask=
83: [ "$bcaddr" = "NONE" ] && bcaddr=
1.84 deraadt 84: ifconfig $if $name $mask $bcaddr $ext1 $ext2 down
85: cmd="dhclient $if"
1.103 deraadt 86: setgateway=N
1.83 miod 87: ;;
88: "rtsol")
1.84 deraadt 89: ifconfig $if $name $mask $bcaddr $ext1 $ext2 up
90: rtsolif="$rtsolif $if"
1.83 miod 91: cmd=
92: ;;
93: "up")
1.84 deraadt 94: # The only one of these guaranteed to be set is $if.
1.83 miod 95: # The remaining ones exist so that media controls work.
1.84 deraadt 96: cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 up"
1.83 miod 97: ;;
98: *)
99: read dt dtaddr
100: if [ "$name" = "alias" ]; then
101: # perform a 'shift' of sorts
102: alias=$name
103: name=$mask
104: mask=$bcaddr
105: bcaddr=$ext1
106: ext1=$ext2
107: ext2=
108: else
109: alias=
110: fi
1.84 deraadt 111: cmd="ifconfig $if $af $alias $name "
1.83 miod 112: case "$dt" in
113: dest)
114: cmd="$cmd $dtaddr"
115: ;;
116: [a-z!]*)
117: cmd2="$dt $dtaddr"
118: ;;
119: esac
120: if [ ! -n "$name" ]; then
1.84 deraadt 121: echo "/etc/hostname.$if: invalid network configuration file"
1.83 miod 122: return
123: fi
124: case $af in
125: inet)
126: [ "$mask" ] && cmd="$cmd netmask $mask"
127: if [ "$bcaddr" -a "X$bcaddr" != "XNONE" ]; then
128: cmd="$cmd broadcast $bcaddr"
129: fi
1.91 deraadt 130: [ "$alias" ] && rtcmd=";route -qn add -host $name 127.0.0.1"
1.83 miod 131: ;;
132: inet6) [ "$mask" ] && cmd="$cmd prefixlen $mask"
133: cmd="$cmd $bcaddr"
134: ;;
135: *)
136: cmd="$cmd $mask $bcaddr"
137: ;;
138: esac
139: cmd="$cmd $ext1 $ext2$rtcmd" rtcmd=
140: ;;
141: esac
142: eval "$cmd"
1.84 deraadt 143: done < /etc/hostname.$if
1.83 miod 144: }
145:
1.105 ! todd 146: # Start multiple:
! 147: # start "$1" interfaces in order or all interfaces if empty
! 148: # don't start "$2" interfaces
! 149: ifmstart() {
! 150: for sif in ${1:-ALL}; do
! 151: for hn in /etc/hostname.*; do
! 152: # Strip off /etc/hostname. prefix
! 153: if=${hn#/etc/hostname.}
! 154: test "$if" = "*" && continue
! 155:
! 156: # Skip unwanted ifs
! 157: s=""
! 158: for xf in $2; do
! 159: test "$xf" = "${if%%[0-9]*}" && s="1" && break
! 160: done
! 161: test "$s" = "1" && continue
! 162:
! 163: # Start wanted ifs
! 164: test "$sif" = "ALL" -o \
! 165: "$sif" = "${if%%[0-9]*}" \
! 166: && ifstart $if
! 167: done
! 168: done
! 169: }
! 170:
1.83 miod 171: # Start the $1 bridge
172: bridgestart() {
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 "$1"; then
176: return
177: fi
178: brconfig $1 > /dev/null 2>&1
179: if [ "$?" != "0" ]; then
1.90 millert 180: # Try to create interface if it does not exist
181: ifconfig $if create > /dev/null 2>&1
182: if [ "$?" != "0" ]; then
183: return
184: fi
1.83 miod 185: fi
186:
187: # Now parse the bridgename.* file
188: # All lines are run as brconfig(8) commands.
189: while read line ; do
190: line=${line%%#*} # strip comments
191: test -z "$line" && continue
192: case "$line" in
193: "!"*)
194: cmd="${line#*!}"
195: ;;
196: *)
197: cmd="brconfig $1 $line"
198: ;;
199: esac
200: eval "$cmd"
201: done < /etc/bridgename.$1
202: }
203:
1.81 angelos 204: # Re-read /etc/rc.conf
205: . /etc/rc.conf
1.1 deraadt 206:
1.83 miod 207: # If we were invoked with a list of interface names, just reconfigure these
208: # interfaces (or bridges) and return.
209: if [ $1x = autobootx ]; then
210: shift
211: fi
212: if [ $# -gt 0 ]; then
213: while [ $# -gt 0 ]; do
214: if [ -f /etc/bridgename.$1 ]; then
215: bridgestart $1
216: else
217: ifstart $1
218: fi
219: shift
220: done
221: return
222: fi
223:
224: # Otherwise, process with the complete network initialization.
225:
1.1 deraadt 226: # /etc/myname contains my symbolic name
1.87 henning 227: if [ -f /etc/myname ]; then
1.100 millert 228: hostname=`stripcom /etc/myname`
1.87 henning 229: hostname $hostname
230: else
231: hostname=`hostname`
232: fi
233:
1.1 deraadt 234: if [ -f /etc/defaultdomain ]; then
1.100 millert 235: domainname `stripcom /etc/defaultdomain`
1.4 dm 236: fi
237:
1.93 deraadt 238: # Set the address for the loopback interface. Bringing the
239: # interface up, automatically invokes the IPv6 address ::1)
1.92 deraadt 240: ifconfig lo0 inet 127.0.0.1
1.24 kstailey 241:
1.54 itojun 242: if ifconfig lo0 inet6 >/dev/null 2>&1; then
243: # IPv6 configurations.
244: ip6kernel=YES
245:
1.83 miod 246: # Disallow link-local unicast dest without outgoing scope identifiers.
1.98 deraadt 247: route -qn add -inet6 fe80:: -prefixlen 10 ::1 -reject > /dev/null
1.66 itojun 248:
1.83 miod 249: # Disallow site-local unicast dest without outgoing scope identifiers.
1.66 itojun 250: # If you configure site-locals without scope id (it is permissible
251: # config for routers that are not on scope boundary), you may want
252: # to comment the line out.
1.98 deraadt 253: route -qn add -inet6 fec0:: -prefixlen 10 ::1 -reject > /dev/null
1.66 itojun 254:
1.83 miod 255: # Disallow "internal" addresses to appear on the wire.
1.98 deraadt 256: route -qn add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject > /dev/null
1.66 itojun 257:
1.83 miod 258: # Disallow packets to malicious IPv4 compatible prefix.
1.98 deraadt 259: route -qn add -inet6 ::224.0.0.0 -prefixlen 100 ::1 -reject > /dev/null
260: route -qn add -inet6 ::127.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
261: route -qn add -inet6 ::0.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
262: route -qn add -inet6 ::255.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
1.66 itojun 263:
1.83 miod 264: # Disallow packets to malicious 6to4 prefix.
1.98 deraadt 265: route -qn add -inet6 2002:e000:: -prefixlen 20 ::1 -reject > /dev/null
266: route -qn add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject > /dev/null
267: route -qn add -inet6 2002:0000:: -prefixlen 24 ::1 -reject > /dev/null
268: route -qn add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject > /dev/null
1.66 itojun 269:
270: # Completely disallow packets to IPv4 compatible prefix.
271: # This may conflict with RFC1933 under following circumstances:
272: # (1) An IPv6-only KAME node tries to originate packets to IPv4
1.77 deraadt 273: # compatible destination. The KAME node has no IPv4 compatible
1.66 itojun 274: # support. Under RFC1933, it should transmit native IPv6
275: # packets toward IPv4 compatible destination, hoping it would
276: # reach a router that forwards the packet toward auto-tunnel
277: # interface.
1.77 deraadt 278: # (2) An IPv6-only node originates a packet to an IPv4 compatible
1.66 itojun 279: # destination. A KAME node is acting as an IPv6 router, and
280: # asked to forward it.
1.77 deraadt 281: # Due to rare use of IPv4 compatible addresses, and security issues
1.66 itojun 282: # with it, we disable it by default.
1.98 deraadt 283: route -qn add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject > /dev/null
1.56 itojun 284:
285: rtsolif=""
1.54 itojun 286: else
287: ip6kernel=NO
288: fi
289:
1.105 ! todd 290:
! 291: # Configure all the non-loopback interfaces which we know about, but
! 292: # do not start interfaces which must be delayed.
1.83 miod 293: # Refer to hostname.if(5) and bridgename.if(5)
1.105 ! todd 294: ifmstart "" "carp gif gre pfsync pppoe"
1.56 itojun 295:
296: if [ "$ip6kernel" = "YES" -a "x$rtsolif" != "x" ]; then
297: fw=`sysctl -n net.inet6.ip6.forwarding`
298: ra=`sysctl -n net.inet6.ip6.accept_rtadv`
299: if [ "x$fw" = "x0" -a "x$ra" = "x1" ]; then
1.57 itojun 300: echo "IPv6 autoconf:$rtsolif"
1.56 itojun 301: rtsol $rtsolif
302: else
303: echo "WARNING: inconsistent config - check /etc/sysctl.conf for IPv6 autoconf"
304: fi
1.57 itojun 305: fi
306: if [ "$ip6kernel" = "YES" ]; then
307: # this is to make sure DAD is completed before going further.
308: sleep `sysctl -n net.inet6.ip6.dad_count`
1.56 itojun 309: fi
310:
1.102 mcbride 311: # The pfsync interface needs to come up before carp.
312: # Configure all the carp interfaces which we know about.
313: # They must come up after pfsync but before default route.
1.105 ! todd 314: ifmstart "pfsync carp"
1.102 mcbride 315:
1.14 deraadt 316: # /etc/mygate, if it exists, contains the name of my gateway host
317: # that name must be in /etc/hosts.
1.104 djm 318: if [ "X${setgateway}" != X"N" -a -f /etc/mygate ]; then
1.97 deraadt 319: route -qn delete default > /dev/null 2>&1
1.100 millert 320: route -qn add -host default `stripcom /etc/mygate`
1.14 deraadt 321: fi
1.44 deraadt 322:
1.48 niklas 323: # Multicast routing.
324: #
325: # The routing to the 224.0.0.0/4 net is setup according to these rules:
326: # multicast_host multicast_router route comment
327: # NO NO -reject no multicast
328: # NO YES none installed daemon will run
329: # YES/interface NO -interface YES=def. iface
330: # Any other combination -reject config error
331: case "$multicast_host:$multicast_router" in
332: NO:NO)
1.91 deraadt 333: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject > /dev/null
1.67 deraadt 334: ;;
1.48 niklas 335: NO:YES)
336: ;;
337: *:NO)
338: set `if [ $multicast_host = YES ]; then
1.91 deraadt 339: ed -s '!route -qn show -inet' <<EOF
1.48 niklas 340: /^default/p
341: EOF
342: else
343: ed -s "!ifconfig $multicast_host" <<EOF
344: /^ inet /p
345: EOF
346: fi`
1.91 deraadt 347: route -qn add -net 224.0.0.0/4 -interface $2 > /dev/null
1.67 deraadt 348: ;;
1.48 niklas 349: *:*)
350: echo 'config error, multicasting disabled until rc.conf is fixed'
1.91 deraadt 351: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject > /dev/null
1.67 deraadt 352: ;;
1.48 niklas 353: esac
1.83 miod 354:
1.105 ! todd 355:
! 356: # Configure PPPoE, GIF, GRE interfaces, delayed because they require routes
! 357: # to be set. PPPoE must be first, as GIF and GRE may depend on it.
! 358: ifmstart "pppoe gif gre"
1.92 deraadt 359:
1.99 itojun 360: # reject 127/8 other than 127.0.0.1
1.92 deraadt 361: route -qn add -net 127 127.0.0.1 -reject > /dev/null
1.83 miod 362:
363: # Configure all the bridges.
364: for bn in /etc/bridgename.*; do
365: # Strip off /etc/bridgename. prefix
366: if=${bn#/etc/bridgename.}
1.85 todd 367: test "$if" = "*" && continue
1.83 miod 368:
369: bridgestart $if
370: done
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