summaryrefslogtreecommitdiff
path: root/recipes/arpwatch/files/init.d
blob: 09e3a8bf4e43bca74bfeacc83ec94a018a4d1432 (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
#!/bin/sh
# /etc/init.d/arpwatch: v9 2004/08/14 KELEMEN Peter <fuji@debian.org>
# Based on /etc/init.d/skeleton (1.8  03-Mar-1998  miquels@cistron.nl)
# 2001/10/26	fuji@debian.org		Support multiple instances.
# 2001/11/24	fuji@debian.org		Use POSIX-style functions.
# 2001/12/17	fuji@debian.org		Use --pidfile on startup, fix restart.
# 2004/08/10	fuji@debian.org		Source /etc/default/arwpatch .
#					Create datafile if it doesn't exist.
#					Run daemon only if executable.

PATH=/sbin:/bin:/usr/sbin:/usr/bin
NAME=arpwatch
DAEMON=/usr/sbin/$NAME
DESC="Ethernet/FDDI station monitor daemon"
DATADIR=/var/lib/$NAME

test -x $DAEMON || exit 0

### You shouldn't touch anything below unless you know what you are doing.

[ -f /etc/default/arpwatch ] && . /etc/default/arpwatch

# Decide whether we have to deal with multiple interfaces.
CONF=/etc/arpwatch.conf
MULTIPLE=0
if [ -r $CONF ]; then
	grep -c '^[a-z]' $CONF 2>&1 >/dev/null && MULTIPLE=1
fi

# Check whether we have to drop privileges.
if [ -n "$RUNAS" ]; then
	if getent passwd "$RUNAS" >/dev/null; then
		ARGS="-u ${RUNAS} $ARGS"
	else
		RUNAS=""
	fi
fi

start_instance () {
	IFACE=$1
	INSTANCE=${NAME}-${IFACE}
	IFACE_OPTS="-i ${IFACE} -f ${IFACE}.dat $2"
	DATAFILE=$DATADIR/${IFACE}.dat

	echo -n "Starting $DESC: "
	if [ ! -f $DATAFILE ]; then
		echo -n "(creating $DATAFILE) "
		:> $DATAFILE
	fi
	if [ -n "$RUNAS" ]; then
		echo -n "(chown $RUNAS $DATAFILE) "
		chown $RUNAS $DATAFILE
	fi
	start-stop-daemon --start --quiet \
		--pidfile /var/run/${INSTANCE}.pid \
		--exec $DAEMON -- $IFACE_OPTS $ARGS
	echo "${INSTANCE}."
	ps h -C $NAME -o pid,args | \
		awk "/$IFACE/ { print \$1 }" > /var/run/${INSTANCE}.pid
}

stop_instance () {
	IFACE=$1
	INSTANCE=${NAME}-${IFACE}
	[ -f /var/run/${INSTANCE}.pid ] || return 0
	echo -n "Stopping $DESC: "
	start-stop-daemon --stop --quiet --oknodo \
		--pidfile /var/run/${INSTANCE}.pid
	echo "${INSTANCE}."
	rm -f /var/run/${INSTANCE}.pid
}

process_loop_break_line () {
	__IFACE=$1
	shift
	__IOPTS="$@"
}

process_loop () {
	OPERATION=$1
	grep '^[a-z]' $CONF 2>/dev/null | \
	while read LINE
	do
		process_loop_break_line $LINE
		I=$__IFACE
		I_OPTS="$__IOPTS"
		$OPERATION $I "$I_OPTS"
	done
}

start_default () {
	echo -n "Starting $DESC: "
	if [ ! -f $DATADIR/arp.dat ]; then
		echo -n "(creating $DATADIR/arp.dat) "
		:> $DATADIR/arp.dat
	fi
	if [ -n "$RUNAS" ]; then
		echo -n "(chown $RUNAS $DATADIR/arp.dat) "
		chown $RUNAS $DATADIR/arp.dat
	fi
	start-stop-daemon --start --quiet \
		--exec $DAEMON -- $ARGS
	echo "$NAME."
}

stop_default () {
	echo -n "Stopping $DESC: "
	start-stop-daemon --stop --quiet --oknodo \
		--exec $DAEMON
	echo "$NAME."
	rm -f /var/run/$NAME.pid
}

startup () {
	if [ "$MULTIPLE" -gt 0 ]; then
  		process_loop start_instance
	else
		start_default
	fi
}

shutdown () {
	if [ "$MULTIPLE" -gt 0 ]; then
		process_loop stop_instance
	else
		stop_default
	fi
}

case "$1" in
  start)
  	startup
	;;
  stop)
  	shutdown
	;;
  reload)
  	echo "Reload operation not supported -- use restart."
	exit 1
	;;
  restart|force-reload)
	#
	#	If the "reload" option is implemented, move the "force-reload"
	#	option to the "reload" entry above. If not, "force-reload" is
	#	just the same as "restart".
	#
	shutdown
	sleep 1
	startup
	;;
  *)
	N=/etc/init.d/$NAME
	# echo "Usage: $N {start|stop|restart|reload|force-reload}" >&2
	echo "Usage: $N {start|stop|restart|force-reload}" >&2
	exit 1
	;;
esac

exit 0