Annotation of src/etc/netstart, Revision 1.102
1.1 deraadt 1: #!/bin/sh -
2: #
1.102 ! mcbride 3: # $OpenBSD: netstart,v 1.101 2004/12/30 17:33:59 millert 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"
1.83 miod 86: ;;
87: "rtsol")
1.84 deraadt 88: ifconfig $if $name $mask $bcaddr $ext1 $ext2 up
89: rtsolif="$rtsolif $if"
1.83 miod 90: cmd=
91: ;;
92: "up")
1.84 deraadt 93: # The only one of these guaranteed to be set is $if.
1.83 miod 94: # The remaining ones exist so that media controls work.
1.84 deraadt 95: cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 up"
1.83 miod 96: ;;
97: *)
98: read dt dtaddr
99: if [ "$name" = "alias" ]; then
100: # perform a 'shift' of sorts
101: alias=$name
102: name=$mask
103: mask=$bcaddr
104: bcaddr=$ext1
105: ext1=$ext2
106: ext2=
107: else
108: alias=
109: fi
1.84 deraadt 110: cmd="ifconfig $if $af $alias $name "
1.83 miod 111: case "$dt" in
112: dest)
113: cmd="$cmd $dtaddr"
114: ;;
115: [a-z!]*)
116: cmd2="$dt $dtaddr"
117: ;;
118: esac
119: if [ ! -n "$name" ]; then
1.84 deraadt 120: echo "/etc/hostname.$if: invalid network configuration file"
1.83 miod 121: return
122: fi
123: case $af in
124: inet)
125: [ "$mask" ] && cmd="$cmd netmask $mask"
126: if [ "$bcaddr" -a "X$bcaddr" != "XNONE" ]; then
127: cmd="$cmd broadcast $bcaddr"
128: fi
1.91 deraadt 129: [ "$alias" ] && rtcmd=";route -qn add -host $name 127.0.0.1"
1.83 miod 130: ;;
131: inet6) [ "$mask" ] && cmd="$cmd prefixlen $mask"
132: cmd="$cmd $bcaddr"
133: ;;
134: *)
135: cmd="$cmd $mask $bcaddr"
136: ;;
137: esac
138: cmd="$cmd $ext1 $ext2$rtcmd" rtcmd=
139: ;;
140: esac
141: eval "$cmd"
1.84 deraadt 142: done < /etc/hostname.$if
1.83 miod 143: }
144:
145: # Start the $1 bridge
146: bridgestart() {
147: # Interface names must be alphanumeric only. We check to avoid
148: # configuring backup or temp files, and to catch the "*" case.
149: if ! isalphanumeric "$1"; then
150: return
151: fi
152: brconfig $1 > /dev/null 2>&1
153: if [ "$?" != "0" ]; then
1.90 millert 154: # Try to create interface if it does not exist
155: ifconfig $if create > /dev/null 2>&1
156: if [ "$?" != "0" ]; then
157: return
158: fi
1.83 miod 159: fi
160:
161: # Now parse the bridgename.* file
162: # All lines are run as brconfig(8) commands.
163: while read line ; do
164: line=${line%%#*} # strip comments
165: test -z "$line" && continue
166: case "$line" in
167: "!"*)
168: cmd="${line#*!}"
169: ;;
170: *)
171: cmd="brconfig $1 $line"
172: ;;
173: esac
174: eval "$cmd"
175: done < /etc/bridgename.$1
176: }
177:
1.81 angelos 178: # Re-read /etc/rc.conf
179: . /etc/rc.conf
1.1 deraadt 180:
1.83 miod 181: # If we were invoked with a list of interface names, just reconfigure these
182: # interfaces (or bridges) and return.
183: if [ $1x = autobootx ]; then
184: shift
185: fi
186: if [ $# -gt 0 ]; then
187: while [ $# -gt 0 ]; do
188: if [ -f /etc/bridgename.$1 ]; then
189: bridgestart $1
190: else
191: ifstart $1
192: fi
193: shift
194: done
195: return
196: fi
197:
198: # Otherwise, process with the complete network initialization.
199:
1.1 deraadt 200: # /etc/myname contains my symbolic name
1.87 henning 201: if [ -f /etc/myname ]; then
1.100 millert 202: hostname=`stripcom /etc/myname`
1.87 henning 203: hostname $hostname
204: else
205: hostname=`hostname`
206: fi
207:
1.1 deraadt 208: if [ -f /etc/defaultdomain ]; then
1.100 millert 209: domainname `stripcom /etc/defaultdomain`
1.4 dm 210: fi
211:
1.93 deraadt 212: # Set the address for the loopback interface. Bringing the
213: # interface up, automatically invokes the IPv6 address ::1)
1.92 deraadt 214: ifconfig lo0 inet 127.0.0.1
1.24 kstailey 215:
1.54 itojun 216: if ifconfig lo0 inet6 >/dev/null 2>&1; then
217: # IPv6 configurations.
218: ip6kernel=YES
219:
1.83 miod 220: # Disallow link-local unicast dest without outgoing scope identifiers.
1.98 deraadt 221: route -qn add -inet6 fe80:: -prefixlen 10 ::1 -reject > /dev/null
1.66 itojun 222:
1.83 miod 223: # Disallow site-local unicast dest without outgoing scope identifiers.
1.66 itojun 224: # If you configure site-locals without scope id (it is permissible
225: # config for routers that are not on scope boundary), you may want
226: # to comment the line out.
1.98 deraadt 227: route -qn add -inet6 fec0:: -prefixlen 10 ::1 -reject > /dev/null
1.66 itojun 228:
1.83 miod 229: # Disallow "internal" addresses to appear on the wire.
1.98 deraadt 230: route -qn add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject > /dev/null
1.66 itojun 231:
1.83 miod 232: # Disallow packets to malicious IPv4 compatible prefix.
1.98 deraadt 233: route -qn add -inet6 ::224.0.0.0 -prefixlen 100 ::1 -reject > /dev/null
234: route -qn add -inet6 ::127.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
235: route -qn add -inet6 ::0.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
236: route -qn add -inet6 ::255.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
1.66 itojun 237:
1.83 miod 238: # Disallow packets to malicious 6to4 prefix.
1.98 deraadt 239: route -qn add -inet6 2002:e000:: -prefixlen 20 ::1 -reject > /dev/null
240: route -qn add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject > /dev/null
241: route -qn add -inet6 2002:0000:: -prefixlen 24 ::1 -reject > /dev/null
242: route -qn add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject > /dev/null
1.66 itojun 243:
244: # Completely disallow packets to IPv4 compatible prefix.
245: # This may conflict with RFC1933 under following circumstances:
246: # (1) An IPv6-only KAME node tries to originate packets to IPv4
1.77 deraadt 247: # compatible destination. The KAME node has no IPv4 compatible
1.66 itojun 248: # support. Under RFC1933, it should transmit native IPv6
249: # packets toward IPv4 compatible destination, hoping it would
250: # reach a router that forwards the packet toward auto-tunnel
251: # interface.
1.77 deraadt 252: # (2) An IPv6-only node originates a packet to an IPv4 compatible
1.66 itojun 253: # destination. A KAME node is acting as an IPv6 router, and
254: # asked to forward it.
1.77 deraadt 255: # Due to rare use of IPv4 compatible addresses, and security issues
1.66 itojun 256: # with it, we disable it by default.
1.98 deraadt 257: route -qn add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject > /dev/null
1.56 itojun 258:
259: rtsolif=""
1.54 itojun 260: else
261: ip6kernel=NO
262: fi
263:
1.83 miod 264: # Configure all the non-loopback interfaces which we know about.
265: # Refer to hostname.if(5) and bridgename.if(5)
1.47 niklas 266: for hn in /etc/hostname.*; do
1.83 miod 267: # Strip off /etc/hostname. prefix
268: if=${hn#/etc/hostname.}
1.85 todd 269: test "$if" = "*" && continue
1.47 niklas 270:
1.83 miod 271: case $if in
1.95 mcbride 272: "carp"*|"gif"*|"gre"*|"pfsync"*)
273: # CARP, GIF, GRE and PFSYNC interfaces need the routes to be setup
1.88 david 274: # before they are configured.
1.83 miod 275: continue
276: ;;
1.55 todd 277: *)
1.83 miod 278: ifstart $if
1.55 todd 279: ;;
1.47 niklas 280: esac
1.50 deraadt 281: done
1.56 itojun 282:
283: if [ "$ip6kernel" = "YES" -a "x$rtsolif" != "x" ]; then
284: fw=`sysctl -n net.inet6.ip6.forwarding`
285: ra=`sysctl -n net.inet6.ip6.accept_rtadv`
286: if [ "x$fw" = "x0" -a "x$ra" = "x1" ]; then
1.57 itojun 287: echo "IPv6 autoconf:$rtsolif"
1.56 itojun 288: rtsol $rtsolif
289: else
290: echo "WARNING: inconsistent config - check /etc/sysctl.conf for IPv6 autoconf"
291: fi
1.57 itojun 292: fi
293: if [ "$ip6kernel" = "YES" ]; then
294: # this is to make sure DAD is completed before going further.
295: sleep `sysctl -n net.inet6.ip6.dad_count`
1.56 itojun 296: fi
297:
1.102 ! mcbride 298: # The pfsync interface needs to come up before carp.
! 299: if [ -f /etc/hostname.pfsync0 ]; then
! 300: ifstart pfsync0
! 301: fi
! 302:
! 303: # Configure all the carp interfaces which we know about.
! 304: # They must come up after pfsync but before default route.
! 305: for hn in /etc/hostname.*; do
! 306: # Strip off /etc/hostname. prefix
! 307: if=${hn#/etc/hostname.}
! 308: test "$if" = "*" && continue
! 309:
! 310: case $if in
! 311: "carp"*)
! 312: ifstart $if
! 313: ;;
! 314: *)
! 315: # Regular interfaces have already been configured.
! 316: continue
! 317: ;;
! 318: esac
! 319: done
! 320:
1.14 deraadt 321: # /etc/mygate, if it exists, contains the name of my gateway host
322: # that name must be in /etc/hosts.
1.42 marc 323: if [ -f /etc/mygate ]; then
1.97 deraadt 324: route -qn delete default > /dev/null 2>&1
1.100 millert 325: route -qn add -host default `stripcom /etc/mygate`
1.14 deraadt 326: fi
1.44 deraadt 327:
1.48 niklas 328: # Multicast routing.
329: #
330: # The routing to the 224.0.0.0/4 net is setup according to these rules:
331: # multicast_host multicast_router route comment
332: # NO NO -reject no multicast
333: # NO YES none installed daemon will run
334: # YES/interface NO -interface YES=def. iface
335: # Any other combination -reject config error
336: case "$multicast_host:$multicast_router" in
337: NO:NO)
1.91 deraadt 338: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject > /dev/null
1.67 deraadt 339: ;;
1.48 niklas 340: NO:YES)
341: ;;
342: *:NO)
343: set `if [ $multicast_host = YES ]; then
1.91 deraadt 344: ed -s '!route -qn show -inet' <<EOF
1.48 niklas 345: /^default/p
346: EOF
347: else
348: ed -s "!ifconfig $multicast_host" <<EOF
349: /^ inet /p
350: EOF
351: fi`
1.91 deraadt 352: route -qn add -net 224.0.0.0/4 -interface $2 > /dev/null
1.67 deraadt 353: ;;
1.48 niklas 354: *:*)
355: echo 'config error, multicasting disabled until rc.conf is fixed'
1.91 deraadt 356: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject > /dev/null
1.67 deraadt 357: ;;
1.48 niklas 358: esac
1.83 miod 359:
1.102 ! mcbride 360: # Configure all the gif and gre interfaces which we know about.
1.83 miod 361: # They were delayed because they require the routes to be set.
362: for hn in /etc/hostname.*; do
363: # Strip off /etc/hostname. prefix
364: if=${hn#/etc/hostname.}
1.85 todd 365: test "$if" = "*" && continue
1.83 miod 366:
367: case $if in
1.102 ! mcbride 368: "gif"*|"gre"*)
1.83 miod 369: ifstart $if
370: ;;
371: *)
372: # Regular interfaces have already been configured.
373: continue
374: ;;
375: esac
376: done
1.92 deraadt 377:
1.99 itojun 378: # reject 127/8 other than 127.0.0.1
1.92 deraadt 379: route -qn add -net 127 127.0.0.1 -reject > /dev/null
1.83 miod 380:
381: # Configure all the bridges.
382: for bn in /etc/bridgename.*; do
383: # Strip off /etc/bridgename. prefix
384: if=${bn#/etc/bridgename.}
1.85 todd 385: test "$if" = "*" && continue
1.83 miod 386:
387: bridgestart $if
388: done
![[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