You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
469 lines
15 KiB
469 lines
15 KiB
#!/bin/sh
|
|
# travelmate, a wlan connection manager for travel router
|
|
# written by Dirk Brenken (dev@brenken.org)
|
|
|
|
# This is free software, licensed under the GNU General Public License v3.
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
# set initial defaults
|
|
#
|
|
LC_ALL=C
|
|
PATH="/usr/sbin:/usr/bin:/sbin:/bin"
|
|
trm_ver="1.3.0"
|
|
trm_sysver="unknown"
|
|
trm_enabled=0
|
|
trm_debug=0
|
|
trm_captive=1
|
|
trm_proactive=1
|
|
trm_captiveurl="http://captive.apple.com"
|
|
trm_minquality=35
|
|
trm_maxretry=3
|
|
trm_maxwait=30
|
|
trm_timeout=60
|
|
trm_radio=""
|
|
trm_connection=""
|
|
trm_rtfile="/tmp/trm_runtime.json"
|
|
trm_fetch="$(command -v uclient-fetch)"
|
|
trm_iwinfo="$(command -v iwinfo)"
|
|
trm_wpa="$(command -v wpa_supplicant)"
|
|
trm_action="${1:-"start"}"
|
|
trm_pidfile="/var/run/travelmate.pid"
|
|
|
|
# trim leading and trailing whitespace characters
|
|
#
|
|
f_trim()
|
|
{
|
|
local trim="$1"
|
|
|
|
trim="${trim#"${trim%%[![:space:]]*}"}"
|
|
trim="${trim%"${trim##*[![:space:]]}"}"
|
|
printf '%s' "${trim}"
|
|
}
|
|
|
|
# load travelmate environment
|
|
#
|
|
f_envload()
|
|
{
|
|
local sys_call sys_desc sys_model sys_ver
|
|
|
|
# get system information
|
|
#
|
|
sys_call="$(ubus -S call system board 2>/dev/null)"
|
|
if [ -n "${sys_call}" ]
|
|
then
|
|
sys_desc="$(printf '%s' "${sys_call}" | jsonfilter -e '@.release.description')"
|
|
sys_model="$(printf '%s' "${sys_call}" | jsonfilter -e '@.model')"
|
|
trm_sysver="${sys_model}, ${sys_desc}"
|
|
fi
|
|
|
|
# (re-)initialize global list variables
|
|
#
|
|
unset trm_devlist trm_stalist trm_radiolist trm_active_sta
|
|
|
|
# load config and check 'enabled' option
|
|
#
|
|
option_cb()
|
|
{
|
|
local option="${1}"
|
|
local value="${2}"
|
|
eval "${option}=\"${value}\""
|
|
}
|
|
config_load travelmate
|
|
|
|
if [ ${trm_enabled} -ne 1 ]
|
|
then
|
|
f_log "info" "travelmate is currently disabled, please set 'trm_enabled' to '1' to use this service"
|
|
exit 0
|
|
fi
|
|
|
|
# validate input ranges
|
|
#
|
|
if [ ${trm_minquality} -lt 20 ] || [ ${trm_minquality} -gt 80 ]
|
|
then
|
|
trm_minquality=35
|
|
fi
|
|
if [ ${trm_maxretry} -lt 1 ] || [ ${trm_maxretry} -gt 10 ]
|
|
then
|
|
trm_maxretry=3
|
|
fi
|
|
if [ ${trm_maxwait} -lt 20 ] || [ ${trm_maxwait} -gt 40 ] || [ ${trm_maxwait} -ge ${trm_timeout} ]
|
|
then
|
|
trm_maxwait=30
|
|
fi
|
|
if [ ${trm_timeout} -lt 30 ] || [ ${trm_timeout} -gt 300 ] || [ ${trm_timeout} -le ${trm_maxwait} ]
|
|
then
|
|
trm_timeout=60
|
|
fi
|
|
}
|
|
|
|
# gather radio information & bring down all STA interfaces
|
|
#
|
|
f_prep()
|
|
{
|
|
local eap_rc=0 config="${1}" proactive="${2}"
|
|
local mode="$(uci_get wireless "${config}" mode)"
|
|
local network="$(uci_get wireless "${config}" network)"
|
|
local radio="$(uci_get wireless "${config}" device)"
|
|
local disabled="$(uci_get wireless "${config}" disabled)"
|
|
local eaptype="$(uci_get wireless "${config}" eap_type)"
|
|
|
|
if [ -z "${trm_radio}" ] && [ -z "$(printf "%s" "${trm_radiolist}" | grep -Fo " ${radio}")" ]
|
|
then
|
|
trm_radiolist="$(f_trim "${trm_radiolist} ${radio}")"
|
|
elif [ -n "${trm_radio}" ] && [ -z "${trm_radiolist}" ]
|
|
then
|
|
trm_radiolist="$(f_trim "$(printf "%s" "${trm_radio}" | \
|
|
awk '{while(match(tolower($0),/radio[0-9]/)){ORS=" ";print substr(tolower($0),RSTART,RLENGTH);$0=substr($0,RSTART+RLENGTH)}}')")"
|
|
fi
|
|
if [ "${mode}" = "sta" ] && [ "${network}" = "${trm_iface}" ]
|
|
then
|
|
if ([ -z "${disabled}" ] || [ "${disabled}" = "0" ]) && ([ ${proactive} -eq 0 ] || [ "${trm_ifstatus}" != "true" ])
|
|
then
|
|
uci_set wireless "${config}" disabled 1
|
|
elif [ "${disabled}" = "0" ] && [ "${trm_ifstatus}" = "true" ] && [ -z "${trm_active_sta}" ] && [ ${proactive} -eq 1 ]
|
|
then
|
|
trm_active_sta="${config}"
|
|
fi
|
|
if [ -n "${eaptype}" ]
|
|
then
|
|
eap_rc="$("${trm_wpa}" -veap >/dev/null 2>&1; printf "%u" ${?})"
|
|
fi
|
|
if [ -z "${eaptype}" ] || [ ${eap_rc} -eq 0 ]
|
|
then
|
|
trm_stalist="$(f_trim "${trm_stalist} ${config}_${radio}")"
|
|
fi
|
|
fi
|
|
f_log "debug" "f_prep ::: config: ${config}, mode: ${mode}, network: ${network}, eap_rc: ${eap_rc}, radio: ${radio}, trm_radio: ${trm_radio:-"-"}, trm_active_sta: ${trm_active_sta:-"-"}, proactive: ${proactive}, disabled: ${disabled}"
|
|
}
|
|
|
|
# check interface status
|
|
#
|
|
f_check()
|
|
{
|
|
local IFS ifname radio dev_status config sta_essid sta_bssid result wait=1 mode="${1}" status="${2:-"false"}"
|
|
|
|
trm_ifquality=0
|
|
if [ "${mode}" = "initial" ]
|
|
then
|
|
trm_ifstatus="false"
|
|
else
|
|
ubus call network reload
|
|
fi
|
|
while [ ${wait} -le ${trm_maxwait} ]
|
|
do
|
|
dev_status="$(ubus -S call network.wireless status 2>/dev/null)"
|
|
if [ -n "${dev_status}" ]
|
|
then
|
|
if [ "${mode}" = "dev" ]
|
|
then
|
|
if [ "${trm_ifstatus}" != "${status}" ]
|
|
then
|
|
trm_ifstatus="${status}"
|
|
f_jsnup
|
|
fi
|
|
for radio in ${trm_radiolist}
|
|
do
|
|
result="$(printf "%s" "${dev_status}" | jsonfilter -l1 -e "@.${radio}.up")"
|
|
if [ "${result}" = "true" ] && [ -z "$(printf "%s" "${trm_devlist}" | grep -Fo " ${radio}")" ]
|
|
then
|
|
trm_devlist="$(f_trim "${trm_devlist} ${radio}")"
|
|
fi
|
|
done
|
|
if [ "${trm_devlist}" = "${trm_radiolist}" ] || [ ${wait} -eq ${trm_maxwait} ]
|
|
then
|
|
ifname="${trm_devlist}"
|
|
break
|
|
else
|
|
unset trm_devlist
|
|
fi
|
|
elif [ "${mode}" = "rev" ]
|
|
then
|
|
wait=$(( ${trm_maxwait} / 3 ))
|
|
sleep ${wait}
|
|
break
|
|
else
|
|
ifname="$(printf "%s" "${dev_status}" | jsonfilter -l1 -e '@.*.interfaces[@.config.mode="sta"].ifname')"
|
|
if [ -n "${ifname}" ]
|
|
then
|
|
trm_ifquality="$(${trm_iwinfo} ${ifname} info 2>/dev/null | awk -F "[\/| ]" '/Link Quality:/{printf "%i\n", (100 / $NF * $(NF-1)) }')"
|
|
if [ ${trm_ifquality} -ge ${trm_minquality} ]
|
|
then
|
|
trm_ifstatus="$(ubus -S call network.interface dump 2>/dev/null | jsonfilter -l1 -e "@.interface[@.device=\"${ifname}\"].up")"
|
|
elif [ "${mode}" = "initial" ] && [ ${trm_ifquality} -lt ${trm_minquality} ]
|
|
then
|
|
trm_ifstatus="${status}"
|
|
sta_essid="$(printf "%s" "${dev_status}" | jsonfilter -l1 -e '@.*.interfaces[@.config.mode="sta"].*.ssid')"
|
|
sta_bssid="$(printf "%s" "${dev_status}" | jsonfilter -l1 -e '@.*.interfaces[@.config.mode="sta"].*.bssid')"
|
|
f_log "info" "uplink '${sta_essid:-"-"}/${sta_bssid:-"-"}' is out of range (${trm_ifquality}/${trm_minquality}), uplink disconnected (${trm_sysver})"
|
|
fi
|
|
fi
|
|
fi
|
|
if [ "${mode}" = "initial" ] || [ "${trm_ifstatus}" = "true" ]
|
|
then
|
|
if ([ "${trm_ifstatus}" != "true" ] && [ "${trm_ifstatus}" != "${status}" ]) || \
|
|
([ "${trm_ifstatus}" = "true" ] && [ "${mode}" = "sta" ] && [ -n "${trm_active_sta}" ]) || \
|
|
[ ${trm_ifquality} -lt ${trm_minquality} ]
|
|
then
|
|
f_jsnup
|
|
fi
|
|
if [ "${mode}" = "initial" ] && [ "${trm_captive}" -eq 1 ] && [ "${trm_ifstatus}" = "true" ]
|
|
then
|
|
result="$(${trm_fetch} --timeout=$(( ${trm_maxwait} / 3 )) --spider "${trm_captiveurl}" 2>&1 | \
|
|
awk '/^Redirected/{printf "%s" "net cp \047"$NF"\047";exit}/^Download completed/{printf "%s" "net ok";exit}/^Failed|^Connection error/{printf "%s" "net nok";exit}')"
|
|
if [ -n "${result}" ] && ([ -z "${trm_connection}" ] || [ "${result}" != "${trm_connection%/*}" ])
|
|
then
|
|
trm_connection="${result}/${trm_ifquality}"
|
|
f_jsnup
|
|
fi
|
|
fi
|
|
break
|
|
fi
|
|
fi
|
|
wait=$(( wait + 1 ))
|
|
sleep 1
|
|
done
|
|
f_log "debug" "f_check::: mode: ${mode}, name: ${ifname:-"-"}, status: ${trm_ifstatus}, quality: ${trm_ifquality}, connection: ${trm_connection:-"-"}, wait: ${wait}, max_wait: ${trm_maxwait}, min_quality: ${trm_minquality}, captive: ${trm_captive}"
|
|
}
|
|
|
|
# update runtime information
|
|
#
|
|
f_jsnup()
|
|
{
|
|
local config sta_iface sta_radio sta_essid sta_bssid dev_status status="${trm_ifstatus}" faulty_list faulty_station="${1}"
|
|
|
|
if [ "${status}" = "true" ]
|
|
then
|
|
status="connected (${trm_connection:-"-"})"
|
|
else
|
|
unset trm_connection
|
|
status="running / not connected"
|
|
fi
|
|
|
|
dev_status="$(ubus -S call network.wireless status 2>/dev/null)"
|
|
if [ -n "${dev_status}" ]
|
|
then
|
|
config="$(printf "%s" "${dev_status}" | jsonfilter -l1 -e '@.*.interfaces[@.config.mode="sta"].section')"
|
|
if [ -n "${config}" ]
|
|
then
|
|
sta_iface="$(uci_get wireless "${config}" network)"
|
|
sta_radio="$(uci_get wireless "${config}" device)"
|
|
sta_essid="$(uci_get wireless "${config}" ssid)"
|
|
sta_bssid="$(uci_get wireless "${config}" bssid)"
|
|
fi
|
|
fi
|
|
|
|
json_get_var faulty_list "faulty_stations"
|
|
if [ -n "${faulty_station}" ]
|
|
then
|
|
if [ -z "$(printf "%s" "${faulty_list}" | grep -Fo "${faulty_station}")" ]
|
|
then
|
|
faulty_list="$(f_trim "${faulty_list} ${faulty_station}")"
|
|
fi
|
|
fi
|
|
json_add_string "travelmate_status" "${status}"
|
|
json_add_string "travelmate_version" "${trm_ver}"
|
|
json_add_string "station_id" "${sta_radio:-"-"}/${sta_essid:-"-"}/${sta_bssid:-"-"}"
|
|
json_add_string "station_interface" "${sta_iface:-"-"}"
|
|
json_add_string "faulty_stations" "${faulty_list}"
|
|
json_add_string "last_rundate" "$(/bin/date "+%d.%m.%Y %H:%M:%S")"
|
|
json_add_string "system" "${trm_sysver}"
|
|
json_dump > "${trm_rtfile}"
|
|
f_log "debug" "f_jsnup::: config: ${config:-"-"}, status: ${status:-"-"}, sta_iface: ${sta_iface:-"-"}, sta_radio: ${sta_radio:-"-"}, sta_essid: ${sta_essid:-"-"}, sta_bssid: ${sta_bssid:-"-"}, faulty_list: ${faulty_list:-"-"}"
|
|
}
|
|
|
|
# write to syslog
|
|
#
|
|
f_log()
|
|
{
|
|
local class="${1}"
|
|
local log_msg="${2}"
|
|
|
|
if [ -n "${log_msg}" ] && ([ "${class}" != "debug" ] || [ ${trm_debug} -eq 1 ])
|
|
then
|
|
logger -p "${class}" -t "travelmate-${trm_ver}[${$}]" "${log_msg}"
|
|
if [ "${class}" = "err" ]
|
|
then
|
|
trm_ifstatus="error"
|
|
f_jsnup
|
|
logger -p "${class}" -t "travelmate-${trm_ver}[${$}]" "Please check 'https://github.com/openwrt/packages/blob/master/net/travelmate/files/README.md' (${trm_sysver})"
|
|
exit 1
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# main function for connection handling
|
|
#
|
|
f_main()
|
|
{
|
|
local IFS cnt dev config scan scan_list scan_essid scan_bssid scan_quality faulty_list
|
|
local sta sta_essid sta_bssid sta_radio sta_iface active_essid active_bssid active_radio active_prio
|
|
|
|
f_check "initial"
|
|
if [ "${trm_ifstatus}" != "true" ] || [ ${trm_proactive} -eq 1 ]
|
|
then
|
|
config_load wireless
|
|
config_foreach f_prep wifi-iface ${trm_proactive}
|
|
if [ "${trm_ifstatus}" = "true" ] && [ ${trm_proactive} -eq 1 ]
|
|
then
|
|
json_get_var station_id "station_id"
|
|
active_radio="${station_id%%/*}"
|
|
active_essid="${station_id%/*}"
|
|
active_essid="${active_essid#*/}"
|
|
active_bssid="${station_id##*/}"
|
|
f_check "dev" "true"
|
|
else
|
|
uci_commit wireless
|
|
f_check "dev"
|
|
fi
|
|
json_get_var faulty_list "faulty_stations"
|
|
f_log "debug" "f_main ::: iwinfo: ${trm_iwinfo:-"-"}, dev_list: ${trm_devlist:-"-"}, sta_list: ${trm_stalist:0:800}, faulty_list: ${faulty_list:-"-"}"
|
|
for dev in ${trm_devlist}
|
|
do
|
|
f_log "debug" "f_main ::: dev: ${dev}"
|
|
if [ -z "$(printf "%s" "${trm_stalist}" | grep -Fo "_${dev}")" ]
|
|
then
|
|
f_log "debug" "f_main ::: no station on '${dev}' - continue"
|
|
continue
|
|
fi
|
|
cnt=1
|
|
while [ ${cnt} -le ${trm_maxretry} ]
|
|
do
|
|
f_log "debug" "f_main ::: cnt: ${cnt}, max_cnt: ${trm_maxretry}"
|
|
for sta in ${trm_stalist}
|
|
do
|
|
config="${sta%%_*}"
|
|
sta_radio="${sta##*_}"
|
|
sta_essid="$(uci_get wireless "${config}" ssid)"
|
|
sta_bssid="$(uci_get wireless "${config}" bssid)"
|
|
sta_iface="$(uci_get wireless "${config}" network)"
|
|
json_get_var faulty_list "faulty_stations"
|
|
if [ -n "$(printf "%s" "${faulty_list}" | grep -Fo "${sta_radio}/${sta_essid}/${sta_bssid}")" ]
|
|
then
|
|
f_log "debug" "f_main ::: faulty station '${sta_radio}/${sta_essid}/${sta_bssid:-"-"}' - continue"
|
|
continue
|
|
fi
|
|
if ([ "${dev}" = "${active_radio}" ] && [ "${sta_essid}" = "${active_essid}" ] && [ "${sta_bssid:-"-"}" = "${active_bssid}" ]) || \
|
|
([ "${dev}" != "${active_radio}" ] && [ "${active_prio}" = "true" ])
|
|
then
|
|
active_prio="true"
|
|
f_log "debug" "f_main ::: active station prioritized '${active_radio}/${active_essid}/${active_bssid:-"-"}' - break"
|
|
break
|
|
fi
|
|
if [ -z "${scan_list}" ]
|
|
then
|
|
scan_list="$(f_trim "$(${trm_iwinfo} "${dev}" scan 2>/dev/null | \
|
|
awk 'BEGIN{FS="[/ ]"}/Address:/{var1=$NF}/ESSID:/{var2="";for(i=12;i<=NF;i++) \
|
|
if(var2==""){var2=$i}else{var2=var2" "$i}}/Quality:/{printf "%i,%s,%s\n",(100/$NF*$(NF-1)),var1,var2}' | \
|
|
sort -rn | awk '{ORS=",";print $0}')")"
|
|
f_log "debug" "f_main ::: scan_list: ${scan_list:0:800}"
|
|
fi
|
|
IFS=","
|
|
for scan in ${scan_list}
|
|
do
|
|
if [ -z "${scan_quality}" ]
|
|
then
|
|
scan_quality="${scan}"
|
|
elif [ -z "${scan_bssid}" ]
|
|
then
|
|
scan_bssid="${scan}"
|
|
elif [ -z "${scan_essid}" ]
|
|
then
|
|
scan_essid="${scan}"
|
|
fi
|
|
if [ -n "${scan_quality}" ] && [ -n "${scan_bssid}" ] && [ -n "${scan_essid}" ]
|
|
then
|
|
if [ ${scan_quality} -ge ${trm_minquality} ]
|
|
then
|
|
if (([ "${scan_essid}" = "\"${sta_essid}\"" ] && ([ -z "${sta_bssid}" ] || [ "${scan_bssid}" = "${sta_bssid}" ])) || \
|
|
([ "${scan_bssid}" = "${sta_bssid}" ] && [ "${scan_essid}" = "unknown" ])) && [ "${dev}" = "${sta_radio}" ]
|
|
then
|
|
f_log "debug" "f_main ::: scan_quality: ${scan_quality}, sta_bssid: ${sta_bssid}, scan_bssid: ${scan_bssid}, sta_essid: \"${sta_essid}\", scan_essid: ${scan_essid}"
|
|
if [ "${dev}" = "${active_radio}" ] && [ -n "${trm_active_sta}" ]
|
|
then
|
|
uci_set wireless "${trm_active_sta}" disabled 1
|
|
unset trm_connection
|
|
fi
|
|
uci_set wireless "${config}" disabled 0
|
|
f_check "sta"
|
|
if [ "${trm_ifstatus}" = "true" ]
|
|
then
|
|
uci_commit wireless
|
|
f_check "initial"
|
|
f_log "info" "connected to uplink '${sta_radio}/${sta_essid}/${sta_bssid:-"-"}' (${trm_sysver})"
|
|
return 0
|
|
elif [ ${cnt} -eq ${trm_maxretry} ]
|
|
then
|
|
uci -q revert wireless
|
|
f_check "rev"
|
|
if [ "${dev}" = "${active_radio}" ] && [ -n "${trm_active_sta}" ]
|
|
then
|
|
f_check "initial"
|
|
fi
|
|
faulty_station="${sta_radio}/${sta_essid}/${sta_bssid:-"-"}"
|
|
f_jsnup "${faulty_station}"
|
|
f_log "info" "uplink disabled '${sta_radio}/${sta_essid}/${sta_bssid:-"-"}' (${trm_sysver})"
|
|
break
|
|
else
|
|
uci -q revert wireless
|
|
f_check "rev"
|
|
f_jsnup
|
|
f_log "info" "can't connect to uplink '${sta_radio}/${sta_essid}/${sta_bssid:-"-"}' (${trm_sysver})"
|
|
unset scan_list
|
|
break
|
|
fi
|
|
fi
|
|
fi
|
|
unset scan_quality scan_bssid scan_essid
|
|
fi
|
|
done
|
|
unset IFS scan_quality scan_bssid scan_essid
|
|
done
|
|
cnt=$(( cnt + 1 ))
|
|
sleep $(( ${trm_maxwait} / 6 ))
|
|
done
|
|
unset scan_list
|
|
done
|
|
fi
|
|
}
|
|
|
|
# source required system libraries
|
|
#
|
|
if [ -r "/lib/functions.sh" ] && [ -r "/usr/share/libubox/jshn.sh" ]
|
|
then
|
|
. "/lib/functions.sh"
|
|
. "/usr/share/libubox/jshn.sh"
|
|
else
|
|
f_log "err" "system libraries not found"
|
|
fi
|
|
|
|
# initialize json runtime file
|
|
#
|
|
json_load_file "${trm_rtfile}" >/dev/null 2>&1
|
|
json_select data >/dev/null 2>&1
|
|
if [ ${?} -ne 0 ]
|
|
then
|
|
> "${trm_rtfile}"
|
|
json_init
|
|
json_add_object "data"
|
|
fi
|
|
|
|
# control travelmate actions
|
|
#
|
|
while true
|
|
do
|
|
if [ -z "${trm_action}" ]
|
|
then
|
|
sleep ${trm_timeout}
|
|
elif [ "${trm_action}" = "stop" ]
|
|
then
|
|
> "${trm_rtfile}"
|
|
f_log "info" "travelmate instance stopped ::: action: ${trm_action}, pid: $(cat ${trm_pidfile} 2>/dev/null)"
|
|
exit 0
|
|
else
|
|
f_log "info" "travelmate instance started ::: action: ${trm_action}, pid: ${$}"
|
|
unset trm_action
|
|
fi
|
|
f_envload
|
|
f_main
|
|
done
|