summaryrefslogtreecommitdiffstats
path: root/etc/rc.d/network
blob: c9856b6008df3cca59a6d3170eb9b5acba87eadd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
#!/bin/sh
#
# $NetBSD: network,v 1.29 2001/01/11 17:56:16 itojun Exp $
#

# PROVIDE: network
# REQUIRE: ipfilter ipsec mountcritlocal root tty sysctl

. /etc/rc.subr

name="network"
start_cmd="network_start"
stop_cmd="network_stop"

network_start()
{
	# set hostname, turn on network
	#
	echo "Starting network."

	# If $hostname is set, use it for my Internet name,
	# otherwise use /etc/myname
	#
	if [ -z "$hostname" ] && [ -f /etc/myname ]; then
		hostname=`cat /etc/myname`
	fi
	if [ -n "$hostname" ]; then
		echo "Hostname: $hostname"
		hostname $hostname
	else
		# Don't warn about it if we're going to run
		# DHCP later, as we will probably get the
		# hostname at that time.
		#
		if ! checkyesno dhclient && [ -z "`hostname`" ]; then
			warn "\$hostname not set."
		fi
	fi

	# Check $domainname first, then /etc/defaultdomain,
	# for NIS/YP domain name
	#
	if [ -z "$domainname" ] && [ -f /etc/defaultdomain ]; then
		domainname=`cat /etc/defaultdomain`
	fi
	if [ -n "$domainname" ]; then
		echo "NIS domainname: $domainname"
		domainname $domainname
	fi

	# Flush all routes just to make sure it is clean
	if checkyesno flushroutes; then
		route -n flush
	fi

	# Set the address for the first loopback interface, so that the
	# auto-route from a newly configured interface's address to lo0
	# works correctly.
	#
	# NOTE: obscure networking problems may occur if lo0 isn't configured...
	#
	ifconfig lo0 inet 127.0.0.1

	# According to RFC1122, 127.0.0.0/8 should not leave the node.
	#
	route add -inet 127.0.0.0 -netmask 0xff000000 127.0.0.1 -reject

	# IPv6 routing setups, and host/router mode selection.
	#
	if ifconfig lo0 inet6 >/dev/null 2>&1; then
		# We have IPv6 support in kernel.

		# disallow link-local unicast dest without outgoing scope
		# identifiers.
		#
		route add -inet6 fe80:: -prefixlen 10 ::1 -reject

		# disallow site-local unicast dest without outgoing scope
		# identifiers.
		# If you configure site-locals without scope id (it is
		# permissible config for routers that are not on scope
		# boundary), you may want to comment the following one out.
		#
		if ! checkyesno ip6sitelocal; then
			route add -inet6 fec0:: -prefixlen 10 ::1 -reject
		fi

		# disallow "internal" addresses to appear on the wire.
		#
		route add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject

		# disallow packets to malicious IPv4 compatible prefix
		#
		route add -inet6 ::224.0.0.0 -prefixlen 100 ::1 -reject
		route add -inet6 ::127.0.0.0 -prefixlen 104 ::1 -reject
		route add -inet6 ::0.0.0.0 -prefixlen 104 ::1 -reject
		route add -inet6 ::255.0.0.0 -prefixlen 104 ::1 -reject

		# disallow packets to malicious 6to4 prefix
		#
		route add -inet6 2002:e000:: -prefixlen 20 ::1 -reject
		route add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject
		route add -inet6 2002:0000:: -prefixlen 24 ::1 -reject
		route add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject

		# Completely disallow packets to IPv4 compatible prefix.
		# This may conflict with RFC1933 under following circumstances:
		# (1) An IPv6-only KAME node tries to originate packets to IPv4
		#     comatible destination.  The KAME node has no IPv4
		#     compatible support.  Under RFC1933, it should transmit
		#     native IPv6 packets toward IPv4 compatible destination,
		#     hoping it would reach a router that forwards the packet
		#     toward auto-tunnel interface.
		# (2) An IPv6-only node originates a packet to IPv4 compatible
		#     destination.  A KAME node is acting as an IPv6 router, and
		#     asked to forward it.
		# Due to rare use of IPv4 compatible address, and security
		# issues with it, we disable it by default.
		#
		route add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject

		sysctl -w net.inet6.ip6.forwarding=0 >/dev/null
		sysctl -w net.inet6.ip6.accept_rtadv=0 >/dev/null

		# backward compatibility
		#
		if [ -z "$ip6mode" ] && [ -n "$ip6forwarding" ]; then
			warn 'Please migrate to newer rc.conf' \
			    '(use ip6mode, not ip6forwarding)'
			if checkyesno ip6forwarding; then
				ip6mode=router
			elif checkyesno rtsol; then
				ip6mode=autohost
			else
				ip6mode=host
			fi
		fi

		case $ip6mode in
		router)
			echo 'IPv6 mode: router'
			sysctl -w net.inet6.ip6.forwarding=1 >/dev/null
			;;

		autohost)
			echo 'IPv6 mode: autoconfigured host'
			sysctl -w net.inet6.ip6.accept_rtadv=1 >/dev/null
			;;

		host)	
			echo 'IPv6 mode: host'
			;;

		*)	echo 'WARNING: invalid value in ip6mode'
			;;

		esac
	fi

	# Configure all of the network interfaces listed in $net_interfaces;
	# if $auto_ifconfig is YES, grab all interfaces from ifconfig.
	# In the following, "xxN" stands in for interface names, like "le0".
	# For any interfaces that has an $ifconfig_xxN variable associated,
	# we do "ifconfig xxN $ifconfig_xxN".
	# If there is no such variable, we take the contents of the file
	# /etc/ifconfig.xxN, and run "ifconfig xxN" repeatedly, using each
	# line of the file as the arguments for a seperate "ifconfig"
	# invocation.
	#
	# In order to configure an interface reasonably, you at the very least
	# need to specify "[addr_family] [hostname]" (e.g "inet my.domain.org"),
	# and probably a netmask (as in "netmask 0xffffffe0"). You will
	# frequently need to specify a media type, as in "media UTP", for
	# interface cards with multiple media connections that do not
	# autoconfigure. See the ifconfig manual page for details.
	#
	# Note that /etc/ifconfig.xxN takes multiple lines.  The following
	# configuration is possible:
	#	inet 10.1.1.1 netmask 0xffffff00
	#	inet 10.1.1.2 netmask 0xffffff00 alias
	#	inet6 fec0::1 prefixlen 64 alias
	#
	# You can put shell script fragment into /etc/ifconfig.xxN by
	# starting a line with "!".  Refer to ifconfig.if(5) for details.
	#
	if [ "$net_interfaces" != NO ]; then
		if checkyesno auto_ifconfig; then
			tmp=`ifconfig -l`
			for cloner in `ifconfig -C 2>/dev/null`; do
				for int in /etc/ifconfig.${cloner}[0-9]*; do
					[ ! -f $int ] && break
					tmp="$tmp ${int##*.}"
				done
			done
		else
			tmp="$net_interfaces"
		fi
		echo -n 'Configuring network interfaces:'
		for int in $tmp; do
			eval args=\$ifconfig_$int
			if [ -n "$args" ]; then
				echo -n " $int"
				ifconfig $int $args
			elif [ -f /etc/ifconfig.$int ]; then
				echo -n " $int"
				while read args; do
					[ -z "$args" ] && continue
					case "$args" in
					"#"*)
						;;
					"!"*)
						eval ${args#*!}
						;;
					*)
						ifconfig $int $args
						;;
					esac
				done < /etc/ifconfig.$int
			else
				if ! checkyesno auto_ifconfig; then
					echo
					warn \
			"/etc/ifconfig.$int missing and ifconfig_$int not set;"
					warn "interface $int not configured."
				fi
				continue
			fi
			configured_interfaces="$configured_interfaces $int"
		done
		echo "."
	fi

	# Check $defaultroute, then /etc/mygate, for the name of my gateway
	# host. That name must be in /etc/hosts.
	#
	if [ -z "$defaultroute" ] && [ -f /etc/mygate ]; then
		defaultroute=`cat /etc/mygate`
	fi
	if [ -n "$defaultroute" ]; then
		route add default $defaultroute
	fi

	# Check if each configured interface xxN has an $ifaliases_xxN variable
	# associated, then configure additional IP addresses for that interface.
	# The variable contains a list of "address netmask" pairs, with
	# "netmask" set to "-" if the interface default netmask is to be used.
	#
	# Note that $ifaliases_xxN works only with certain configurations and
	# considered not recommended.  Use /etc/ifconfig.xxN if possible.
	# 
	#
	if [ -n "$configured_interfaces" ]; then
		echo "Adding interface aliases:"
		done_aliases_message=yes
	fi
	for int in $configured_interfaces; do
		eval args=\$ifaliases_$int
		if [ -n "$args" ]; then
			set -- $args
			while [ $# -ge 2 ]; do
				addr=$1 ; net=$2 ; shift 2
				if [ "$net" = "-" ]; then
					# for compatibility only, obsolete
					ifconfig $int inet alias $addr
				else
					ifconfig $int inet alias $addr \
					    netmask $net
				fi
				# Use loopback, not the wire
				route add $addr 127.0.0.1
			done
		fi
	done

	# /etc/ifaliases, if it exists, contains the names of additional IP
	# addresses for each interface. It is formatted as a series of lines
	# that contain
	#	address interface netmask
	#
	# Note that /etc/ifaliases works only with certain cases only and its
	# use is not recommended.  Use /etc/ifconfig.xxN instead.
	#
	#
	if [ -f /etc/ifaliases ]; then
		if [ "$done_aliases_message" != yes ]; then
			echo "Adding interface aliases:"
		fi
		while read addr int net; do
			if [ -z "$net" ]; then
				# for compatibility only, obsolete
				ifconfig $int inet alias $addr
			else
				ifconfig $int inet alias $addr netmask $net
			fi
			# use loopback, not the wire
			route add $addr 127.0.0.1
		done < /etc/ifaliases
	fi

	# IPv6 interface autoconfiguration.
	#
	if ifconfig lo0 inet6 >/dev/null 2>&1; then
		# wait till DAD is completed. always invoke it in case
		# if are configured manually by ifconfig
		#
		dadcount=`sysctl -n net.inet6.ip6.dad_count 2>/dev/null`
		sleep $dadcount
		sleep 1

		if checkyesno rtsol; then
			if [ "$ip6mode" = "autohost" ]; then
				echo 'Sending router solicitation...'
				rtsol $rtsol_flags
			else
				echo
				warn \
			    "ip6mode must be set to 'autohost' to use rtsol."
			fi

			# wait till DAD is completed, for global addresses
			# configured by router advert message.
			#
			sleep $dadcount
			sleep 1
		fi
	fi

	# XXX this must die
	if [ -s /etc/netstart.local ]; then
		sh /etc/netstart.local start
	fi
}

network_stop()
{
	echo "Stopping network."

	# XXX this must die
	if [ -s /etc/netstart.local ]; then
		sh /etc/netstart.local stop
	fi

	echo "Deleting aliases."
	if [ -f /etc/ifaliases ]; then
		while read addr int net; do
			ifconfig $int inet delete $addr
		done < /etc/ifaliases
	fi

	for int in `ifconfig -lu`; do
		eval args=\$ifaliases_$int
		if [ -n "$args" ]; then
			set -- $args
			while [ $# -ge 2 ]; do
				addr=$1 ; net=$2 ; shift 2
				ifconfig $int inet delete $addr
			done
		fi
	done

	# down interfaces
	#
	echo -n 'Downing network interfaces:'
	if [ "$net_interfaces" != NO ]; then
		if checkyesno auto_ifconfig; then
			tmp=`ifconfig -l`
		else
			tmp="$net_interfaces"
		fi
		for int in $tmp; do
			eval args=\$ifconfig_$int
			if [ -n "$args" ] || [ -f /etc/ifconfig.$int ]; then
				echo -n " $int"
				ifconfig $int down
			fi
		done
		echo "."
	fi

	# flush routes
	#
	route -n flush

}

load_rc_config $name
run_rc_command "$1"
OpenPOWER on IntegriCloud