/[baselayout]/trunk/net/wpa_supplicant.sh
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Contents of /trunk/net/wpa_supplicant.sh

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Revision 2547 - (show annotations) (download) (as text)
Thu Apr 5 11:18:42 2007 UTC (11 years, 5 months ago) by uberlord
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    Rewrite the core parts in C. We now provide librc so other programs can
    query runlevels, services and state without using bash. We also provide
    libeinfo so other programs can easily use our informational functions.

    As such, we have dropped the requirement of using bash as the init script
    shell. We now use /bin/sh and have strived to make the scripts as portable
    as possible. Shells that work are bash and dash. busybox works provided
    you disable s-s-d. If you have WIPE_TMP set to yes in conf.d/bootmisc you
    should disable find too.
    zsh and ksh do not work at this time.

    Networking support is currently being re-vamped also as it was heavily bash
    array based. As such, a new config format is available like so
    config_eth0="1.2.3.4/24 5.6.7.8/16"
    or like so
    config_eth0="'1.2.3.4 netmask 255.255.255.0' '5.6.7.8 netmask 255.255.0.0'"

    We will still support the old bash array format provided that /bin/sh IS
    a link it bash.

    ChangeLog for baselayout-1 can be found in our SVN repo.
1 # Copyright 2004-2007 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3
4 wpa_supplicant_depend() {
5 program start /sbin/wpa_supplicant
6 after macnet plug
7 before interface
8 provide wireless
9
10 # Prefer us over iwconfig
11 after iwconfig
12 }
13
14 # Only set these functions if not set already
15 # IE, prefer to use iwconfig
16 if ! type _get_ssid >/dev/null 2>/dev/null ; then
17 _get_ssid() {
18 local timeout=5 ssid=
19
20 while [ ${timeout} -gt 0 ] ;do
21 ssid=$(wpa_cli -i"${IFACE}" status | sed -n -e 's/^ssid=//p')
22 if [ -n "${ssid}" ] ; then
23 echo "${ssid}"
24 return 0
25 fi
26 sleep 1
27 timeout=$((timeout - 1))
28 done
29
30 return 1
31 }
32
33 _get_ap_mac_address() {
34 wpa_cli -i"${IFACE}" status | sed -n -e 's/^bssid=\(.*\)$/\1/p' \
35 | tr '[:lower:]' '[:upper:]'
36 }
37 fi
38
39 wpa_supplicant_pre_start() {
40 local opts= cfgfile= ctrl_dir=
41
42 _is_wireless || return 0
43
44 # We don't configure wireless if we're being called from
45 # the background unless we're not currently running
46 if [ "${IN_BACKGROUND}" = "true" ] ; then
47 if service_started_daemon "${SVCNAME}" /sbin/wpa_supplicant ; then
48 SSID=$(_get_ssid "${IFACE}")
49 SSIDVAR=$(_shell_var "${SSID}")
50 save_options "SSID" "${SSID}"
51 metric=2000
52 fi
53 return 0
54 fi
55
56 save_options "SSID" ""
57 eval opts=\$wpa_supplicant_${IFVAR}
58 ebegin "Starting wpa_supplicant on" "${IFVAR}"
59
60
61 if [ -x /sbin/iwconfig ] ; then
62 local x=
63 for x in txpower rate rts frag ; do
64 iwconfig "${IFACE}" "${x}" auto 2>/dev/null
65 done
66 fi
67
68 cfgfile=${opts##* -c}
69 if [ -n "${cfgfile}" -a "${cfgfile}" != "${opts}" ] ; then
70 case "${cfgfile}" in
71 " "*) cfgfile=${cfgfile# *} ;;
72 esac
73 cfgfile=${cfgfile%% *}
74 else
75 # Support new and old style locations
76 cfgfile="/etc/wpa_supplicant/wpa_supplicant-${IFACE}.conf"
77 [ ! -e "${cfgfile}" ] \
78 && cfgfile="/etc/wpa_supplicant/wpa_supplicant.conf"
79 [ ! -e ${cfgfile} ] \
80 && cfgfile="/etc/wpa_supplicant.conf"
81 opts="${opts} -c ${cfgfile}"
82 fi
83
84 if [ ! -f ${cfgfile} ] ; then
85 eend 1 "/etc/wpa_supplicant/wpa_supplicant.conf not found"
86 return 1
87 fi
88
89 # Work out where the ctrl_interface dir is if it's not specified
90 local ctrl_dir=$(sed -n -e 's/[ \t]*#.*//g;s/[ \t]*$//g;s/^ctrl_interface=//p' "${cfgfile}")
91 if [ -z "${ctrl_dir}" ] ; then
92 ctrl_dir=${opts##* -C}
93 if [ -n "${ctrl_dir}" -a "${ctrl_dir}" != "${opts}" ] ; then
94 case "${ctrl_dir}" in
95 " "*) ctrl_dir=${ctrl_dir# *} ;;
96 esac
97 ctrl_dir=${ctrl_dir%% *}
98 else
99 ctrl_dir="/var/run/wpa_supplicant"
100 opts="${opts} -C ${ctrl_dir}"
101 fi
102 fi
103 save_options ctrl_dir "${ctrl_dir}"
104
105 actfile="/etc/wpa_supplicant/wpa_cli.sh"
106
107 start-stop-daemon --start --exec /sbin/wpa_supplicant \
108 --pidfile "/var/run/wpa_supplicant-${IFACE}.pid" \
109 -- ${opts} -W -B -i "${IFACE}" \
110 -P "/var/run/wpa_supplicant-${IFACE}.pid"
111 eend $? || return 1
112
113 # Starting wpa_supplication-0.4.0, we can get wpa_cli to
114 # start/stop our scripts from wpa_supplicant messages
115 local inact=false
116 service_inactive "${SVCNAME}" && inact=true
117 mark_service_inactive "${SVCNAME}"
118
119 ebegin "Starting wpa_cli on" "${IFACE}"
120 start-stop-daemon --start --exec /bin/wpa_cli \
121 --pidfile "/var/run/wpa_cli-${IFACE}.pid" \
122 -- -a /etc/wpa_supplicant/wpa_cli.sh -p "${ctrl_dir}" -i "${IFACE}" \
123 -P "/var/run/wpa_cli-${IFACE}.pid" -B
124 if eend $? ; then
125 ebegin "Backgrounding ..."
126 exit 1
127 fi
128
129 # wpa_cli failed to start? OK, error here
130 start-stop-daemon --quiet --stop --exec /sbin/wpa_supplicant \
131 --pidfile "/var/run/wpa_supplicant-${IFACE}.pid"
132 ${inact} || mark_service_stopped "${SVCNAME}"
133 return 1
134 }
135
136 wpa_supplicant_post_stop() {
137 if [ "${IN_BACKGROUND}" = "true" ] ; then
138 # Only stop wpa_supplicant if it's not the controlling daemon
139 ! service_started_daemon "${SVCNAME}" /sbin/wpa_supplicant 1
140 fi
141 [ $? != 0 ] && return 0
142
143 local pidfile="/var/run/wpa_cli-${IFACE}.pid"
144 if [ -f ${pidfile} ] ; then
145 ebegin "Stopping wpa_cli on ${IFACE}"
146 start-stop-daemon --stop --exec /bin/wpa_cli \
147 --pidfile "${pidfile}"
148 eend $?
149 fi
150
151 pidfile="/var/run/wpa_supplicant-${IFACE}.pid"
152 if [ -f ${pidfile} ] ; then
153 ebegin "Stopping wpa_supplicant on ${IFACE}"
154 start-stop-daemon --stop --exec /sbin/wpa_supplicant \
155 --pidfile "${pidfile}"
156 eend $?
157 fi
158
159 # If wpa_supplicant exits uncleanly, we need to remove the stale dir
160 [ -S "/var/run/wpa_supplicant/${IFACE}" ] \
161 && rm -f "/var/run/wpa_supplicant/${IFACE}"
162 }
163
164 # vim: set ts=4 :

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