aboutsummaryrefslogtreecommitdiff
path: root/init.d/network.in
blob: 9b3fc28562791324377e52cad3f96482071de548 (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
#!@PREFIX@/sbin/runscript
# Copyright 2009 Roy Marples <roy@marples.name>
# All rights reserved. Released under the 2-clause BSD license.

description="Configures network interfaces."
__nl="
"

depend()
{
	need localmount
	after bootmisc
	provide net
	keyword nojail noprefix novserver
}

interfaces()
{
	case "${RC_UNAME}" in
	Linux)
		local w= rest= i= cmd=$1
		while read w rest; do
			i=${w%%:*}
			[ "$i" != "$w" ] || continue
			if [ "$cmd" = u ]; then
				ifconfig "$i" | grep -q "[ ]*UP" || continue
			fi
			printf "%s " "$i"
		done </proc/net/dev
		;;
	*)
		ifconfig -l$1
		;;
	esac
}

uniqify()
{
	local result=
	while [ -n "$1" ]; do
		case " ${result} " in
		*" $1 "*);;
		*) result="${result} $1";;
		esac
		shift
	done
	echo "${result# *}"
}

dumpargs()
{
	local f="$1"

	shift
	case "$@" in
	'')		cat "$f";;
	*"$__nl"*)	echo "$@";;
	*)
		(
		 	set -o noglob
			IFS=';'; set -- $@
			IFS="$__nl"; echo "$*"
		);;
	esac
}

runip()
{
	local iface="$1" err=

	shift
	err=$(LC_ALL=C ip address add "$@" dev "$iface" 2>&1)
	[ -z "$err" ] && return 0
	if [ "$err" = "RTNETLINK answers: File exists" ]; then
		ip address del "$@" dev "${iface}" 2>/dev/null
	fi
	# Localise the error
	ip address add "$@" dev "$iface"
}

routeflush()
{
	if [ "${RC_UNAME}" = Linux ]; then
		if [ -x /sbin/ip ]; then
			ip route flush scope global
		else
			# Sadly we also delete some link routes, but
			# this cannot be helped
			local dest= gate= net= flags= rest=
			route -n | while read dest gate net flags rest; do
				[ -z "$net" ] && continue
				case "$dest" in
				[0-9]*)	;;
				*)	continue;;
				esac
				local xtra= netmask="netmask $net"
				case "$flags" in
				U)	continue;;
				*H*)	flags=-host; netmask=;;
				*!*)	flags=-net; xtra=reject;;
				*)	flags=-net;;
				esac
				route del $flags $dest $netmask $xtra
			done
		fi
	else
		route -qn flush
	fi
}

runargs()
{
	dumpargs "$@" | while read -r args; do
		case "$args" in
		''|"#"*)	;;
		*)
				(
				 	vebegin "${args#*!}"
					eval "${args#*!}"
					veend $?
				);;
		esac
	done
}

start()
{
	local cr=0 r= iface= cnf= cmd= args= upcmd=
	einfo "Starting network"
	routeflush
	if [ "${RC_UNAME}" = "Linux" ]; then
		ifconfig lo 127.0.0.1 netmask 255.0.0.0 || cr=1 
		route add -net 127.0.0.0 netmask 255.0.0.0 \
			gw 127.0.0.1 2>/dev/null
		route add -net 127.0.0.0 netmask 255.0.0.0 \
			gw 127.0.0.1 reject 2>/dev/null
	else
		ifconfig lo0 127.0.0.1 netmask 255.0.0.0 || cr=1
		route -q add -inet 127.0.0.0 -netmask 255.0.0.0 \
			127.0.0.1 -reject || cr=1
	fi
	eindent
	for iface in $(uniqify $(interfaces) $interfaces); do
		local func= cf=
		eval upcmd=\$ifup_$iface
		for func in ip ifconfig; do
			eval cmd=\$${func}_${iface}
			if [ -n "$cmd" -o -f /etc/"$func.$iface" ]; then
				cf=/etc/"$func.$iface"
				break
			fi
		done
		[ -n "$cf" -o -n "$upcmd" -o \
			-f /etc/ifup."$iface" -o -f "$cf" ] || continue
		vebegin "$iface"
		case "$func" in
		ip)	func=runip;;
		esac
		eindent
		if [ -n "$upcmd" -o -f /etc/ifup."$iface" ]; then
			runargs /etc/ifup."$iface" "$upcmd"
		fi
		r=0
		dumpargs "$cf" "$cmd" | while read -r args; do
			case "$args" in
			''|"#"*)	;;
			"!"*)
					(
					 	vebegin "${args#*!}"
						eval "${args#*!}"
						veend $?
					);;
			*)
					(
					 	set -o noglob
						eval set -- "$args"
						vebegin "$@"
						$func "$iface" "$@"
						veend $?
					);;
			esac
		done
		eoutdent
		veend $? || cr=1
	done
	eoutdent
	eend $cr

	if [ -n "$defaultroute" ]; then
		ebegin "Setting default route $defaultroute"
		if [ "${RC_UNAME}" = Linux ]; then
			route add default gw $defaultroute
		else
			route add default $defaultroute
		fi
		eend $?
	fi

	return 0
}

stop()
{
	local cr=0 r= iface= cnf= cmd= args= downcmd=
	einfo "Stopping network"
	routeflush
	eindent
	for iface in $(uniqify $(interfaces u) $interfaces); do
		eval downcmd=\$ifdown_$iface
		eval cmd=\$ip_$iface
		[ -z "$cmd" ] && eval cmd=\$ifconfig_$iface
		if [ -n "$cmd" -o -f /etc/ip."$iface" -o \
			-f /etc/ifconfig."$iface" -o \
			-n "$downcmd" -o -f /etc/ifdown."$iface" ];
		then
			vebegin "$iface"
			if [ -n "$downcmd" -o -f /etc/ifdown."$iface" ]; then
				runargs /etc/ifdown."$iface" "$downcmd"
			fi
			ifconfig "$iface" down 2>/dev/null
			veend $?
		fi
	done
	eoutdent
	eend 0
}