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samwiseetc/wpa_supplicant/functions.sh

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#!/bin/sh
#####################################################################
## Purpose
# This file contains common shell functions used by scripts of the
# wpasupplicant package to allow ifupdown to manage wpa_supplicant.
# It also contains some functions used by wpa_action(8) that allow
# ifupdown to be managed by wpa_cli(8) action events.
#
# This file is provided by the wpasupplicant package.
#####################################################################
# Copyright (C) 2006 - 2009 Debian/Ubuntu wpasupplicant Maintainers
# <pkg-wpa-devel@lists.alioth.debian.org>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# On Debian GNU/Linux systems, the text of the GPL license,
# version 2, can be found in /usr/share/common-licenses/GPL-2.
#####################################################################
## global variables
# wpa_supplicant variables
WPA_SUP_BIN="/sbin/wpa_supplicant"
WPA_SUP_PNAME="wpa_supplicant"
WPA_SUP_PIDFILE="/run/wpa_supplicant.${WPA_IFACE}.pid"
WPA_SUP_OMIT_DIR="/run/sendsigs.omit.d"
WPA_SUP_OMIT_PIDFILE="${WPA_SUP_OMIT_DIR}/wpasupplicant.wpa_supplicant.${WPA_IFACE}.pid"
# wpa_cli variables
WPA_CLI_BIN="/sbin/wpa_cli"
WPA_CLI_PNAME="wpa_cli"
WPA_CLI_PIDFILE="/run/wpa_action.${WPA_IFACE}.pid"
WPA_CLI_TIMESTAMP="/run/wpa_action.${WPA_IFACE}.timestamp"
WPA_CLI_IFUPDOWN="/run/wpa_action.${WPA_IFACE}.ifupdown"
# default ctrl_interface socket directory
if [ -z "$WPA_CTRL_DIR" ]; then
WPA_CTRL_DIR="/run/wpa_supplicant"
fi
# verbosity variables
if [ -n "$IF_WPA_VERBOSITY" ] || [ "$VERBOSITY" = "1" ]; then
TO_NULL="/dev/stdout"
DAEMON_VERBOSITY="--verbose"
else
TO_NULL="/dev/null"
DAEMON_VERBOSITY="--quiet"
fi
#####################################################################
## wpa_cli wrapper
# Path to common ctrl_interface socket and iface supplied.
# NB: WPA_CTRL_DIR cannot be used for interactive commands, it is
# set only in the environment that wpa_cli provides when processing
# action events.
#
wpa_cli () {
"$WPA_CLI_BIN" -p "$WPA_CTRL_DIR" -i "$WPA_IFACE" "$@"
return "$?"
}
#####################################################################
## verbose and stderr message wrapper
# Ensures a standard and easily identifiable message is printed by
# scripts using this function library.
#
# log Log a message to syslog when called non-interactively
# by wpa_action
#
# verbose To stdout when IF_WPA_VERBOSITY or VERBOSITY is true
#
# action Same as verbose but without newline
# Useful for allowing wpa_cli commands to echo result
# value of 'OK' or 'FAILED'
#
# stderr Echo warning or error messages to stderr
#
# NB: when called by wpa_action, there is no redirection (verbose)
#
wpa_msg () {
if [ "$1" = "log" ]; then
shift
case "$WPA_ACTION" in
"CONNECTED"|"DISCONNECTED")
[ -x /usr/bin/logger ] || return
if [ "$#" -gt 0 ]; then
logger -t "wpa_action" "$@"
else
logger -t "wpa_action"
fi
;;
*)
[ "$#" -gt 0 ] && echo "wpa_action: $@"
;;
esac
return
fi
case "$1" in
"verbose")
shift
echo "$WPA_SUP_PNAME: $@" >$TO_NULL
;;
"action")
shift
echo -n "$WPA_SUP_PNAME: $@ -- " >$TO_NULL
;;
"stderr")
shift
echo "$WPA_SUP_PNAME: $@" >/dev/stderr
;;
*)
;;
esac
}
#####################################################################
## validate daemon pid files
# Test daemon process ID files via start-stop-daemon with a signal 0
# given the exec binary and pidfile location.
#
# $1 daemon
# $2 pidfile
#
# Returns true when pidfile exists, the process ID exists _and_ was
# created by the exec binary.
#
# If the test fails, but the pidfile exists, it is stale
#
test_daemon_pidfile () {
local DAEMON
local PIDFILE
if [ -n "$1" ]; then
DAEMON="$1"
fi
if [ -f "$2" ]; then
PIDFILE="$2"
fi
if [ -n "$DAEMON" ] && [ -f "$PIDFILE" ]; then
if start-stop-daemon --stop --quiet --signal 0 \
--exec "$DAEMON" --pidfile "$PIDFILE"; then
return 0
else
rm -f "$PIDFILE"
return 1
fi
else
return 1
fi
}
# validate wpa_supplicant pidfile
test_wpa_supplicant () {
test_daemon_pidfile "$WPA_SUP_BIN" "$WPA_SUP_PIDFILE"
}
# validate wpa_cli pidfile
test_wpa_cli () {
test_daemon_pidfile "$WPA_CLI_BIN" "$WPA_CLI_PIDFILE"
}
#####################################################################
## daemonize wpa_supplicant
# Start wpa_supplicant via start-stop-dameon with all required
# options. Will start if environment variable WPA_SUP_CONF is present
#
# Default options:
# -B dameonize/background process
# -D driver backend ('wext' if none given)
# -P process ID file
# -C path to ctrl_interface socket directory
# -s log to syslog
#
# Conditional options:
# -c configuration file
# -W wait for wpa_cli to attach to ctrl_interface socket
# -b bridge interface name
# -f path to log file
#
init_wpa_supplicant () {
[ -n "$WPA_SUP_CONF" ] || return 0
local WPA_SUP_OPTIONS
WPA_SUP_OPTIONS="-s -B -P $WPA_SUP_PIDFILE -i $WPA_IFACE"
if [ -n "$WPA_ACTION_SCRIPT" ]; then
if [ -x "$WPA_ACTION_SCRIPT" ]; then
WPA_SUP_OPTIONS="$WPA_SUP_OPTIONS -W"
wpa_msg verbose "wait for wpa_cli to attach"
else
wpa_msg stderr "action script \"$WPA_ACTION_SCRIPT\" not executable"
return 1
fi
fi
if [ -n "$IF_WPA_BRIDGE" ]; then
WPA_SUP_OPTIONS="$WPA_SUP_OPTIONS -b $IF_WPA_BRIDGE"
wpa_msg verbose "wpa-bridge $IF_WPA_BRIDGE"
fi
if [ -n "$IF_WPA_DRIVER" ]; then
wpa_msg verbose "wpa-driver $IF_WPA_DRIVER"
case "$IF_WPA_DRIVER" in
hostap|ipw|madwifi|ndiswrapper)
WPA_SUP_OPTIONS="$WPA_SUP_OPTIONS -D nl80211,wext"
wpa_msg stderr "\"$IF_WPA_DRIVER\" wpa-driver is unsupported"
wpa_msg stderr "using \"nl80211,wext\" wpa-driver instead ..."
;;
*)
WPA_SUP_OPTIONS="$WPA_SUP_OPTIONS -D $IF_WPA_DRIVER"
;;
esac
else
WPA_SUP_OPTIONS="$WPA_SUP_OPTIONS -D nl80211,wext"
wpa_msg verbose "wpa-driver nl80211,wext (default)"
fi
if [ -n "$IF_WPA_DEBUG_LEVEL" ]; then
case "$IF_WPA_DEBUG_LEVEL" in
3)
WPA_SUP_OPTIONS="$WPA_SUP_OPTIONS -t -ddd"
;;
2)
WPA_SUP_OPTIONS="$WPA_SUP_OPTIONS -t -dd"
;;
1)
WPA_SUP_OPTIONS="$WPA_SUP_OPTIONS -t -d"
;;
0)
# wpa_supplicant default verbosity
;;
-1)
WPA_SUP_OPTIONS="$WPA_SUP_OPTIONS -q"
;;
-2)
WPA_SUP_OPTIONS="$WPA_SUP_OPTIONS -qq"
;;
esac
wpa_msg verbose "using debug level: $IF_WPA_DEBUG_LEVEL"
fi
if [ -n "$IF_WPA_LOGFILE" ]; then
# custom log file
WPA_SUP_OPTIONS="$WPA_SUP_OPTIONS -f $IF_WPA_LOGFILE"
WPA_SUP_LOGFILE="$IF_WPA_LOGFILE"
wpa_msg verbose "logging to $IF_WPA_LOGFILE"
fi
wpa_msg verbose "$WPA_SUP_BIN $WPA_SUP_OPTIONS $WPA_SUP_CONF"
start-stop-daemon --start --oknodo $DAEMON_VERBOSITY \
--name $WPA_SUP_PNAME --startas $WPA_SUP_BIN --pidfile $WPA_SUP_PIDFILE \
-- $WPA_SUP_OPTIONS $WPA_SUP_CONF
if [ "$?" -ne 0 ]; then
wpa_msg stderr "$WPA_SUP_BIN daemon failed to start"
return 1
fi
local WPA_PIDFILE_WAIT
local MAX_WPA_PIDFILE_WAIT
WPA_PIDFILE_WAIT="0"
MAX_WPA_PIDFILE_WAIT="5"
until [ -s "$WPA_SUP_PIDFILE" ]; do
if [ "$WPA_PIDFILE_WAIT" -ge "$MAX_WPA_PIDFILE_WAIT" ]; then
wpa_msg stderr "timed out waiting for creation of $WPA_SUP_PIDFILE"
return 1
else
wpa_msg verbose "waiting for \"$WPA_SUP_PIDFILE\": " \
"$WPA_PIDFILE_WAIT (max. $MAX_WPA_PIDFILE_WAIT)"
fi
WPA_PIDFILE_WAIT=$(($WPA_PIDFILE_WAIT + 1))
sleep 1
done
if [ -d "${WPA_SUP_OMIT_DIR}" ]; then
wpa_msg verbose "creating sendsigs omission pidfile: $WPA_SUP_OMIT_PIDFILE"
cat "$WPA_SUP_PIDFILE" > "$WPA_SUP_OMIT_PIDFILE"
fi
local WPA_SOCKET_WAIT
local MAX_WPA_SOCKET_WAIT
WPA_SOCKET_WAIT="0"
MAX_WPA_SOCKET_WAIT="5"
until [ -S "$WPA_CTRL_DIR/$WPA_IFACE" ]; do
if [ "$WPA_SOCKET_WAIT" -ge "$MAX_WPA_SOCKET_WAIT" ]; then
wpa_msg stderr "ctrl_interface socket not found at $WPA_CTRL_DIR/$WPA_IFACE"
return 1
else
wpa_msg verbose "waiting for \"$WPA_CTRL_DIR/$WPA_IFACE\": " \
"$WPA_SOCKET_WAIT (max. $MAX_WPA_SOCKET_WAIT)"
fi
WPA_SOCKET_WAIT=$(($WPA_SOCKET_WAIT + 1))
sleep 1
done
wpa_msg verbose "ctrl_interface socket located at $WPA_CTRL_DIR/$WPA_IFACE"
}
#####################################################################
## stop wpa_supplicant process
# Kill wpa_supplicant via start-stop-daemon, given the location of
# the pidfile or ctrl_interface socket path and interface name
#
kill_wpa_supplicant () {
test_wpa_supplicant || return 0
wpa_msg verbose "terminating $WPA_SUP_PNAME daemon via pidfile $WPA_SUP_PIDFILE"
start-stop-daemon --stop --oknodo $DAEMON_VERBOSITY \
--exec $WPA_SUP_BIN --pidfile $WPA_SUP_PIDFILE
if [ -f "$WPA_SUP_PIDFILE" ]; then
rm -f "$WPA_SUP_PIDFILE"
fi
if [ -f "$WPA_SUP_OMIT_PIDFILE" ]; then
wpa_msg verbose "removing $WPA_SUP_OMIT_PIDFILE"
rm -f "$WPA_SUP_OMIT_PIDFILE"
fi
}
#####################################################################
## reload wpa_supplicant process
# Sending a HUP signal causes wpa_supplicant to reparse its
# configuration file
#
reload_wpa_supplicant () {
if test_wpa_supplicant; then
wpa_msg verbose "reloading wpa_supplicant configuration file via HUP signal"
start-stop-daemon --stop --signal HUP \
--name "$WPA_SUP_PNAME" --pidfile "$WPA_SUP_PIDFILE"
else
wpa_msg verbose "cannot $WPA_ACTION, $WPA_SUP_PIDFILE does not exist"
fi
}
#####################################################################
## daemonize wpa_cli and action script
# If environment variable WPA_ACTION_SCRIPT is present, wpa_cli will
# be spawned via start-stop-daemon
#
# Required options:
# -a action script => wpa_action
# -P process ID file
# -B background process
#
init_wpa_cli () {
[ -n "$WPA_ACTION_SCRIPT" ] || return 0
local WPA_CLI_OPTIONS
WPA_CLI_OPTIONS="-B -P $WPA_CLI_PIDFILE -i $WPA_IFACE"
wpa_msg verbose "$WPA_CLI_BIN $WPA_CLI_OPTIONS -p $WPA_CTRL_DIR -a $WPA_ACTION_SCRIPT"
start-stop-daemon --start --oknodo $DAEMON_VERBOSITY \
--name $WPA_CLI_PNAME --startas $WPA_CLI_BIN --pidfile $WPA_CLI_PIDFILE \
-- $WPA_CLI_OPTIONS -p $WPA_CTRL_DIR -a $WPA_ACTION_SCRIPT
if [ "$?" -ne 0 ]; then
wpa_msg stderr "$WPA_CLI_BIN daemon failed to start"
return 1
fi
}
#####################################################################
## stop wpa_cli process
# Kill wpa_cli via start-stop-daemon, given the location of the
# pidfile
#
kill_wpa_cli () {
test_wpa_cli || return 0
wpa_msg verbose "terminating $WPA_CLI_PNAME daemon via pidfile $WPA_CLI_PIDFILE"
start-stop-daemon --stop --oknodo $DAEMON_VERBOSITY \
--exec $WPA_CLI_BIN --pidfile $WPA_CLI_PIDFILE
if [ -f "$WPA_CLI_PIDFILE" ]; then
rm -f "$WPA_CLI_PIDFILE"
fi
if [ -f "$WPA_CLI_TIMESTAMP" ]; then
rm -f "$WPA_CLI_TIMESTAMP"
fi
if [ -L "$WPA_CLI_IFUPDOWN" ]; then
rm -f "$WPA_CLI_IFUPDOWN"
fi
}
#####################################################################
## higher level wpa_cli wrapper for variable and set_network commands
# wpa_cli_do <value> <type> <variable> [set_network variable] <desc>
#
# $1 envorinment variable
# $2 data type of variable {raw|ascii}
# $3 wpa_cli variable, if $3 is set_network, shift and take
# set_network subvariable
# $4 wpa-* string as it would appear in interfaces file, enhances
# verbose messages
#
wpa_cli_do () {
if [ -z "$1" ]; then
return 0
fi
local WPACLISET_VALUE
local WPACLISET_VARIABLE
local WPACLISET_DESC
case "$2" in
ascii)
# Double quote
WPACLISET_VALUE="\"$1\""
;;
raw|*)
# Provide raw value
WPACLISET_VALUE="$1"
;;
esac
case "$3" in
set_network)
if [ -z "$WPA_ID" ]; then
return 1
fi
shift
WPACLISET_VARIABLE="set_network $WPA_ID $3"
;;
*)
WPACLISET_VARIABLE="$3"
;;
esac
case "$4" in
*-psk|*-passphrase|*-passwd*|*-password*|*-wep-key*)
WPACLISET_DESC="$4 *****"
;;
*)
WPACLISET_DESC="$4 $WPACLISET_VALUE"
;;
esac
wpa_msg action "$WPACLISET_DESC"
wpa_cli $WPACLISET_VARIABLE "$WPACLISET_VALUE" >$TO_NULL
if [ "$?" -ne 0 ]; then
wpa_msg stderr "$WPACLISET_DESC failed!"
fi
}
#####################################################################
## check value data type in plaintext or hex
# returns 0 if input consists of hexadecimal digits only, 1 otherwise
#
ishex () {
if [ -z "$1" ]; then
return 0
fi
case "$1" in
*[!0-9a-fA-F]*)
# plaintext
return 1
;;
*)
# hexadecimal
return 0
;;
esac
}
#####################################################################
## sanity check and set psk|passphrase
# Warn about strange psk|passphrase values
#
# $1 psk or passphrase value
#
# If psk is surrounded by quotes strip them.
#
# If psk contains all hexadecimal characters and string length is 64:
# is 256bit hexadecimal
# else:
# is plaintext
#
# plaintext passphrases must be 8 - 63 characters in length
# 256-bit hexadecimal key must be 64 characters in length
#
wpa_key_check_and_set () {
if [ "$#" -ne 3 ]; then
return 0
fi
local KEY
local KEY_LEN
local KEY_TYPE
local ENC_TYPE
case "$1" in
'"'*'"')
# Strip surrounding quotation marks
KEY=$(echo -n "$1" | sed 's/^"//;s/"$//')
;;
*)
KEY="$1"
;;
esac
KEY_LEN="${#KEY}"
case "$2" in
wep_key*)
ENC_TYPE="WEP"
;;
psk)
ENC_TYPE="WPA"
;;
*)
return 0
;;
esac
if [ "$ENC_TYPE" = "WEP" ]; then
if ishex "$KEY"; then
case "$KEY_LEN" in
10|26|32|58)
# 64/128/152/256-bit WEP
KEY_TYPE="raw"
;;
*)
KEY_TYPE="ascii"
;;
esac
else
KEY_TYPE="ascii"
fi
if [ "$KEY_TYPE" = "ascii" ]; then
if [ "$KEY_LEN" -lt "5" ]; then
wpa_msg stderr "WARNING: plaintext or ascii WEP key has $KEY_LEN characters,"
wpa_msg stderr "it must have at least 5 to be valid."
fi
fi
elif [ "$ENC_TYPE" = "WPA" ]; then
if ishex "$KEY"; then
case "$KEY_LEN" in
64)
# 256-bit WPA
KEY_TYPE="raw"
;;
*)
KEY_TYPE="ascii"
;;
esac
else
KEY_TYPE="ascii"
fi
if [ "$KEY_TYPE" = "ascii" ]; then
if [ "$KEY_LEN" -lt "8" ] || [ "$KEY_LEN" -gt "63" ]; then
wpa_msg stderr "WARNING: plaintext or ascii WPA key has $KEY_LEN characters,"
wpa_msg stderr "it must have between 8 and 63 to be valid."
wpa_msg stderr "If the WPA key is a 256-bit hexadecimal key, it must have"
wpa_msg stderr "exactly 64 characters."
fi
fi
fi
wpa_cli_do "$KEY" "$KEY_TYPE" set_network "$2" "$3"
}
#####################################################################
## formulate a usable configuration from interfaces(5) wpa- lines
# A series of wpa_cli commands corresponding to environment variables
# created as a result of wpa- lines in an interfaces stanza.
#
# NB: no-act when roaming daemon is used (to avoid prematurely
# attaching to ctrl_interface socket)
#
conf_wpa_supplicant () {
if [ -n "$WPA_ACTION_SCRIPT" ]; then
return 0
fi
if [ "$IF_WPA_DRIVER" = "wired" ]; then
IF_WPA_AP_SCAN="0"
wpa_msg verbose "forcing ap_scan=0 (required for wired IEEE8021X auth)"
fi
if [ -n "$IF_WPA_ESSID" ]; then
# #403316, be similar to wireless tools
IF_WPA_SSID="$IF_WPA_ESSID"
fi
wpa_cli_do "$IF_WPA_AP_SCAN" raw \
ap_scan wpa-ap-scan
wpa_cli_do "$IF_WPA_PREAUTHENTICATE" raw \
preauthenticate wpa-preauthenticate
if [ -n "$IF_WPA_SSID" ] || [ "$IF_WPA_DRIVER" = "wired" ] || \
[ -n "$IF_WPA_KEY_MGMT" ]; then
case "$IF_WPA_SSID" in
'"'*'"')
IF_WPA_SSID=$(echo -n "$IF_WPA_SSID" | sed 's/^"//;s/"$//')
;;
*)
;;
esac
WPA_ID=$(wpa_cli add_network)
wpa_msg verbose "configuring network block -- $WPA_ID"
wpa_cli_do "$IF_WPA_SSID" ascii \
set_network ssid wpa-ssid
wpa_cli_do "$IF_WPA_PRIORITY" raw \
set_network priority wpa-priority
wpa_cli_do "$IF_WPA_BSSID" raw \
set_network bssid wpa-bssid
if [ -s "$IF_WPA_PSK_FILE" ]; then
IF_WPA_PSK=$(cat "$IF_WPA_PSK_FILE")
fi
# remain compat with wpa-passphrase-file
if [ -s "$IF_WPA_PASSPHRASE_FILE" ]; then
IF_WPA_PSK=$(cat "$IF_WPA_PASSPHRASE_FILE")
fi
# remain compat with wpa-passphrase
if [ -n "$IF_WPA_PASSPHRASE" ]; then
IF_WPA_PSK="$IF_WPA_PASSPHRASE"
fi
if [ -n "$IF_WPA_PSK" ]; then
wpa_key_check_and_set "$IF_WPA_PSK" \
psk wpa-psk
fi
wpa_cli_do "$IF_WPA_PAIRWISE" raw \
set_network pairwise wpa-pairwise
wpa_cli_do "$IF_WPA_GROUP" raw \
set_network group wpa-group
wpa_cli_do "$IF_WPA_MODE" raw \
set_network mode wpa-mode
wpa_cli_do "$IF_WPA_FREQUENCY" raw \
set_network frequency wpa-frequency
wpa_cli_do "$IF_WPA_SCAN_FREQ" raw \
set_network scan_freq wpa-scan-freq
wpa_cli_do "$IF_WPA_FREQ_LIST" raw \
set_network freq_list wpa-freq-list
wpa_cli_do "$IF_WPA_KEY_MGMT" raw \
set_network key_mgmt wpa-key-mgmt
wpa_cli_do "$IF_WPA_PROTO" raw \
set_network proto wpa-proto
wpa_cli_do "$IF_WPA_AUTH_ALG" raw \
set_network auth_alg wpa-auth-alg
wpa_cli_do "$IF_WPA_SCAN_SSID" raw \
set_network scan_ssid wpa-scan-ssid
wpa_cli_do "$IF_WPA_IDENTITY" ascii \
set_network identity wpa-identity
wpa_cli_do "$IF_WPA_ANONYMOUS_IDENTITY" ascii \
set_network anonymous_identity wpa-anonymous-identity
wpa_cli_do "$IF_WPA_EAP" raw \
set_network eap wpa-eap
wpa_cli_do "$IF_WPA_EAPPSK" raw \
set_network eappsk wpa-eappsk
wpa_cli_do "$IF_WPA_NAI" ascii \
set_network nai wpa-nai
wpa_cli_do "$IF_WPA_PASSWORD" ascii \
set_network password wpa-password
wpa_cli_do "$IF_WPA_CA_CERT" ascii \
set_network ca_cert wpa-ca-cert
wpa_cli_do "$IF_WPA_CA_PATH" ascii \
set_network ca_path wpa-ca-path
wpa_cli_do "$IF_WPA_CLIENT_CERT" ascii \
set_network client_cert wpa-client-cert
wpa_cli_do "$IF_WPA_PRIVATE_KEY" ascii \
set_network private_key wpa-private-key
wpa_cli_do "$IF_WPA_PRIVATE_KEY_PASSWD" ascii \
set_network private_key_passwd wpa-private-key-passwd
wpa_cli_do "$IF_WPA_DH_FILE" ascii \
set_network dh_file wpa-dh-file
wpa_cli_do "$IF_WPA_SUBJECT_MATCH" ascii \
set_network subject_match wpa-subject-match
wpa_cli_do "$IF_WPA_ALTSUBJECT_MATCH" ascii \
set_network altsubject_match wpa-altsubject-match
wpa_cli_do "$IF_WPA_CA_CERT2" ascii \
set_network ca_cert2 wpa-ca-cert2
wpa_cli_do "$IF_WPA_CA_PATH2" ascii \
set_network ca_path2 wpa-ca-path2
wpa_cli_do "$IF_WPA_CLIENT_CERT2" ascii \
set_network client_cert2 wpa-client-cert2
wpa_cli_do "$IF_WPA_PRIVATE_KEY2" ascii \
set_network private_key2 wpa-private-key2
wpa_cli_do "$IF_WPA_PRIVATE_KEY_PASSWD2" ascii \
set_network private_key_passwd2 wpa-private-key-passwd2
wpa_cli_do "$IF_WPA_DH_FILE2" ascii \
set_network dh_file2 wpa-dh-file2
wpa_cli_do "$IF_WPA_SUBJECT_MATCH2" ascii \
set_network subject_match2 wpa-subject-match2
wpa_cli_do "$IF_WPA_ALTSUBJECT_MATCH2" ascii \
set_network altsubject_match2 wpa-altsubject-match2
wpa_cli_do "$IF_WPA_EAP_METHODS" raw \
set_network eap_methods wpa-eap-methods
wpa_cli_do "$IF_WPA_PHASE1" ascii \
set_network phase1 wpa-phase1
wpa_cli_do "$IF_WPA_PHASE2" ascii \
set_network phase2 wpa-phase2
wpa_cli_do "$IF_WPA_PCSC" raw \
set_network pcsc wpa-pcsc
wpa_cli_do "$IF_WPA_PIN" ascii \
set_network pin wpa-pin
wpa_cli_do "$IF_WPA_ENGINE" raw \
set_network engine wpa-engine
wpa_cli_do "$IF_WPA_ENGINE_ID" ascii \
set_network engine_id wpa-engine-id
wpa_cli_do "$IF_WPA_KEY_ID" ascii \
set_network key_id wpa-key-id
wpa_cli_do "$IF_WPA_EAPOL_FLAGS" raw \
set_network eapol_flags wpa-eapol-flags
if [ -n "$IF_WPA_WEP_KEY0" ]; then
wpa_key_check_and_set "$IF_WPA_WEP_KEY0" \
wep_key0 wpa-wep-key0
fi
if [ -n "$IF_WPA_WEP_KEY1" ]; then
wpa_key_check_and_set "$IF_WPA_WEP_KEY1" \
wep_key1 wpa-wep-key1
fi
if [ -n "$IF_WPA_WEP_KEY2" ]; then
wpa_key_check_and_set "$IF_WPA_WEP_KEY2" \
wep_key2 wpa-wep-key2
fi
if [ -n "$IF_WPA_WEP_KEY3" ]; then
wpa_key_check_and_set "$IF_WPA_WEP_KEY3" \
wep_key3 wpa-wep-key3
fi
wpa_cli_do "$IF_WPA_WEP_TX_KEYIDX" raw \
set_network wep_tx_keyidx wpa-wep-tx-keyidx
wpa_cli_do "$IF_WPA_PROACTIVE_KEY_CACHING" raw \
set_network proactive_key_caching wpa-proactive-key-caching
wpa_cli_do "$IF_WPA_PAC_FILE" ascii \
set_network pac_file wpa-pac-file
wpa_cli_do "$IF_WPA_PEERKEY" raw \
set_network peerkey wpa-peerkey
wpa_cli_do "$IF_FRAGMENT_SIZE" raw \
set_network fragment_size wpa-fragment-size
wpa_cli_do "$IF_WPA_ID_STR" ascii \
set_network id_str wpa-id-str
wpa_cli_do "$WPA_ID" raw \
enable_network "enabling network block"
fi
}
#####################################################################
## Log wpa_cli environment variables
wpa_log_env () {
wpa_msg log "WPA_IFACE=$WPA_IFACE WPA_ACTION=$WPA_ACTION"
wpa_msg log "WPA_ID=$WPA_ID WPA_ID_STR=$WPA_ID_STR WPA_CTRL_DIR=$WPA_CTRL_DIR"
}
#####################################################################
## hysteresis checking
# Networking tools such as dhcp clients used with ifupdown can
# synthesize artificial ACTION events, particularly just after a
# DISCONNECTED/CONNECTED events are experienced in quick succession.
# This can lead to infinite event loops, and in extreme cases has the
# potential to cause system instability.
#
wpa_hysteresis_event () {
echo "$(date +%s)" > "$WPA_CLI_TIMESTAMP" 2>/dev/null
}
wpa_hysteresis_check () {
if [ -f "$WPA_CLI_TIMESTAMP" ]; then
local TIME
local TIMESTAMP
local TIMEWAIT
TIME=$(date +%s)
# current time minus 4 second event buffer
TIMEWAIT=$(($TIME-4))
# get time of last event
TIMESTAMP=$(cat $WPA_CLI_TIMESTAMP)
# compare values, allowing new action to be processed
# only if last action was more than 4 seconds ago
if [ "$TIMEWAIT" -le "$TIMESTAMP" ]; then
wpa_msg log "$WPA_ACTION event blocked by hysteresis check"
return 1
fi
fi
return 0
}
#####################################################################
## ifupdown locking functions
# A collection of rudimentary locking functions to lock ifup/ifdown
# actions.
#
ifupdown_lock () {
ln -s lock "$WPA_CLI_IFUPDOWN"
}
ifupdown_locked () {
[ -L "$WPA_CLI_IFUPDOWN" ] && return 0
return 1
}
ifupdown_unlock () {
rm -f "$WPA_CLI_IFUPDOWN"
}
#####################################################################
## apply mapping logic and ifup logical interface
# Apply mapping logic via id_str or external mapping script, check
# state of IFACE with respect to ifupdown and ifup logical interaface
#
ifup () {
local INTERFACES_FILE
local IFUP_RETVAL
local WPA_LOGICAL_IFACE
if [ -e /etc/network/interfaces ]; then
INTERFACES_FILE="/etc/network/interfaces"
else
wpa_msg log "/etc/network/interfaces does not exist, $WPA_IFACE will not be configured"
return 1
fi
if [ -z "$IF_WPA_MAPPING_SCRIPT_PRIORITY" ] && [ -n "$WPA_ID_STR" ]; then
WPA_LOGICAL_IFACE="$WPA_ID_STR"
fi
if [ -z "$WPA_LOGICAL_IFACE" ] && [ -n "$IF_WPA_MAPPING_SCRIPT" ]; then
local WPA_MAP_STDIN
WPA_MAP_STDIN=$(set | sed -n 's/^\(IF_WPA_MAP[0-9]*\)=.*/echo \$\1/p')
if [ -n "$WPA_MAP_STDIN" ]; then
WPA_LOGICAL_IFACE=$(eval "$WPA_MAP_STDIN" | "$IF_WPA_MAPPING_SCRIPT" "$WPA_IFACE")
else
WPA_LOGICAL_IFACE=$("$IF_WPA_MAPPING_SCRIPT" "$WPA_IFACE")
fi
if [ -n "$WPA_LOGICAL_IFACE" ]; then
wpa_msg log "mapping script result: $WPA_LOGICAL_IFACE"
else
wpa_msg log "mapping script failed."
fi
fi
if [ -z "$WPA_LOGICAL_IFACE" ]; then
if [ -n "$IF_WPA_ROAM_DEFAULT_IFACE" ]; then
WPA_LOGICAL_IFACE="$IF_WPA_ROAM_DEFAULT_IFACE"
else
WPA_LOGICAL_IFACE="default"
fi
fi
if [ -n "$WPA_LOGICAL_IFACE" ]; then
if ! /sbin/ifquery "${WPA_LOGICAL_IFACE}" > /dev/null 2>&1; then
wpa_msg log "network settings not defined for $WPA_LOGICAL_IFACE in $INTERFACES_FILE and included files."
WPA_LOGICAL_IFACE="default"
fi
wpa_msg log "ifup $WPA_IFACE=$WPA_LOGICAL_IFACE"
ifupdown_lock
if /sbin/ifquery "$WPA_IFACE" | grep -q '^wpa-roam: ' ; then
# Force settings over the unconfigured "master" IFACE
/sbin/ifup -v --force "$WPA_IFACE=$WPA_LOGICAL_IFACE"
else
/sbin/ifup -v "$WPA_IFACE=$WPA_LOGICAL_IFACE"
fi
IFUP_RETVAL="$?"
ifupdown_unlock
fi
if [ -d "${WPA_SUP_OMIT_DIR}" ]; then
wpa_msg log "creating sendsigs omission pidfile: $WPA_SUP_OMIT_PIDFILE"
cat "$WPA_SUP_PIDFILE" > "$WPA_SUP_OMIT_PIDFILE"
fi
return "$IFUP_RETVAL"
}
#####################################################################
## ifdown IFACE
# Check IFACE state and ifdown as requested.
#
ifdown () {
wpa_msg log "ifdown $WPA_IFACE"
ifupdown_lock
/sbin/ifdown -v "$WPA_IFACE"
ifupdown_unlock
wpa_msg log "removing sendsigs omission pidfile: $WPA_SUP_OMIT_PIDFILE"
rm -f "$WPA_SUP_OMIT_PIDFILE"
}
#####################################################################
## keep IFACE scanning
# After ifdown, the IFACE may be left "down", and inhibits
# wpa_supplicant's ability to continue roaming.
#
# NB: use iproute if present, flushing the IFACE first
#
if_post_down_up () {
if [ -x /bin/ip ]; then
ip addr flush dev "$WPA_IFACE" 2>/dev/null
ip link set "$WPA_IFACE" up
else
ifconfig "$WPA_IFACE" up
fi
}
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