summaryrefslogtreecommitdiff
path: root/net/wpa_supplicant.sh
blob: 9bbdc31cec63137fcc73f0cfef67a560503e044a (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
# Copyright 2004-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

wpa_supplicant_depend() {
	program start /sbin/wpa_supplicant
	after macnet plug
	before interface
	provide wireless

	# Prefer us over iwconfig
	after iwconfig
}

# Only set these functions if not set already
# IE, prefer to use iwconfig
if ! type _get_ssid >/dev/null 2>/dev/null ; then
_get_ssid() {
	local timeout=5 ssid=

	while [ ${timeout} -gt 0 ] ;do
		ssid=$(wpa_cli -i"${IFACE}" status | sed -n -e 's/^ssid=//p')
		if [ -n "${ssid}" ] ; then
			echo "${ssid}"
			return 0
		fi
		sleep 1
		timeout=$((timeout - 1))
	done

	return 1
}

_get_ap_mac_address() {
	wpa_cli -i"${IFACE}" status | sed -n -e 's/^bssid=\(.*\)$/\1/p' \
		| tr '[:lower:]' '[:upper:]'
}
fi

wpa_supplicant_pre_start() {
	local opts= cfgfile= ctrl_dir=

	_is_wireless || return 0

	# We don't configure wireless if we're being called from
	# the background unless we're not currently running
	if [ "${IN_BACKGROUND}" = "true" ] ; then
		if service_started_daemon "${SVCNAME}" /sbin/wpa_supplicant ; then
			SSID=$(_get_ssid "${IFACE}")
			SSIDVAR=$(_shell_var "${SSID}")
			save_options "SSID" "${SSID}"
			metric=2000
		fi
		return 0
	fi

	save_options "SSID" ""
	eval opts=\$wpa_supplicant_${IFVAR}
	ebegin "Starting wpa_supplicant on" "${IFVAR}"


	if [ -x /sbin/iwconfig ] ; then
		local x=
		for x in txpower rate rts frag ; do
			iwconfig "${IFACE}" "${x}" auto 2>/dev/null
		done
	fi

	cfgfile=${opts##* -c}
	if [ -n "${cfgfile}" -a "${cfgfile}" != "${opts}" ] ; then
		case "${cfgfile}" in
			" "*) cfgfile=${cfgfile# *} ;;
		esac
		cfgfile=${cfgfile%% *}
	else
		# Support new and old style locations
		cfgfile="/etc/wpa_supplicant/wpa_supplicant-${IFACE}.conf"
		[ ! -e "${cfgfile}" ] \
			&& cfgfile="/etc/wpa_supplicant/wpa_supplicant.conf"
		[ ! -e ${cfgfile} ] \
			&& cfgfile="/etc/wpa_supplicant.conf"
		opts="${opts} -c ${cfgfile}"
	fi

	if [ ! -f ${cfgfile} ] ; then
		eend 1 "/etc/wpa_supplicant/wpa_supplicant.conf not found"
		return 1
	fi

	# Work out where the ctrl_interface dir is if it's not specified
	local ctrl_dir=$(sed -n -e 's/[[:space:]]*#.*//g;s/[[:space:]]*$//g;s/^ctrl_interface=//p' "${cfgfile}")
	if [ -z "${ctrl_dir}" ] ; then
		ctrl_dir=${opts##* -C}
		if [ -n "${ctrl_dir}" -a "${ctrl_dir}" != "${opts}" ] ; then
			case "${ctrl_dir}" in
				" "*) ctrl_dir=${ctrl_dir# *} ;;
			esac
			ctrl_dir=${ctrl_dir%% *}
		else
			ctrl_dir="/var/run/wpa_supplicant"
			opts="${opts} -C ${ctrl_dir}"
		fi
	fi
	save_options ctrl_dir "${ctrl_dir}"

	actfile="/etc/wpa_supplicant/wpa_cli.sh"

	start-stop-daemon --start --exec /sbin/wpa_supplicant \
		--pidfile "/var/run/wpa_supplicant-${IFACE}.pid" \
		-- ${opts} -W -B -i "${IFACE}" \
		-P "/var/run/wpa_supplicant-${IFACE}.pid"
	eend $? || return 1

	# Starting wpa_supplication-0.4.0, we can get wpa_cli to
	# start/stop our scripts from wpa_supplicant messages
	local inact=false
	service_inactive "${SVCNAME}" && inact=true
	mark_service_inactive "${SVCNAME}"

	ebegin "Starting wpa_cli on" "${IFACE}"
	start-stop-daemon --start --exec /bin/wpa_cli \
		--pidfile "/var/run/wpa_cli-${IFACE}.pid" \
		-- -a /etc/wpa_supplicant/wpa_cli.sh -p "${ctrl_dir}" -i "${IFACE}" \
		-P "/var/run/wpa_cli-${IFACE}.pid" -B
	if eend $? ; then
		ebegin "Backgrounding ..."
		exit 1 
	fi

	# wpa_cli failed to start? OK, error here
	start-stop-daemon --quiet --stop --exec /sbin/wpa_supplicant \
		--pidfile "/var/run/wpa_supplicant-${IFACE}.pid"
	${inact} ||	mark_service_stopped "${SVCNAME}"
	return 1
}

wpa_supplicant_post_stop() {
	if [ "${IN_BACKGROUND}" = "true" ] ; then
		# Only stop wpa_supplicant if it's not the controlling daemon
		! service_started_daemon "${SVCNAME}" /sbin/wpa_supplicant 1 
	fi
	[ $? != 0 ] && return 0

	local pidfile="/var/run/wpa_cli-${IFACE}.pid"
	if [ -f ${pidfile} ] ; then
		ebegin "Stopping wpa_cli on ${IFACE}"
		start-stop-daemon --stop --exec /bin/wpa_cli \
			--pidfile "${pidfile}"
		eend $?
	fi

	pidfile="/var/run/wpa_supplicant-${IFACE}.pid"
	if [ -f ${pidfile} ] ; then
		ebegin "Stopping wpa_supplicant on ${IFACE}"
		start-stop-daemon --stop --exec /sbin/wpa_supplicant \
			--pidfile "${pidfile}"
		eend $?
	fi

	# If wpa_supplicant exits uncleanly, we need to remove the stale dir
	[ -S "/var/run/wpa_supplicant/${IFACE}" ] \
		&& rm -f "/var/run/wpa_supplicant/${IFACE}"
}

# vim: set ts=4 :