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#!/bin/sh /etc/rc.common
# Copyright (c) 2016-2024 Dirk Brenken (dev@brenken.org)
# This is free software, licensed under the GNU General Public License v3.
# set (s)hellcheck exceptions
# shellcheck disable=all
START=25
USE_PROCD=1
extra_command "scan" "[<radio>|<ifname>] Scan for available nearby uplinks"
extra_command "assoc" "[<radio>|<ifname>] Get MAC adresses of associated wlan stations"
extra_command "setup" "[<iface>] [<zone>] [<metric>] Setup the travelmate uplink interface, by default 'trm_wwan' with firewall zone 'wan' and metric '100'"
trm_init="/etc/init.d/travelmate"
trm_script="/usr/bin/travelmate.sh"
trm_pidfile="/var/run/travelmate.pid"
trm_scanfile="/var/run/travelmate.scan"
boot() {
if [ -s "${trm_pidfile}" ]; then
: >"${trm_pidfile}"
fi
rc_procd start_service
}
start_service() {
if "${trm_init}" enabled; then
if [ "${action}" = "boot" ]; then
return 0
fi
procd_open_instance "travelmate"
procd_set_param command "${trm_script}" "${@}"
procd_set_param pidfile "${trm_pidfile}"
procd_set_param nice "$(uci_get travelmate global trm_nice "0")"
procd_set_param stdout 1
procd_set_param stderr 1
procd_close_instance
fi
}
reload_service() {
local ppid pid timeout
timeout="$(uci_get travelmate global trm_timeout)"
if [ -s "${trm_pidfile}" ]; then
ppid="$(cat "${trm_pidfile}" 2>/dev/null)"
if [ -n "${ppid}" ]; then
pid="$(pgrep -xnf "sleep ${timeout:-60} 0" -P ${ppid} 2>/dev/null)"
if [ -n "${pid}" ]; then
kill -INT ${pid} 2>/dev/null
fi
fi
fi
}
stop_service() {
rc_procd "${trm_script}" stop
}
status_service() {
local key keylist value rtfile
rtfile="$(uci_get travelmate global trm_rtfile "/tmp/trm_runtime.json")"
json_load_file "${rtfile}" >/dev/null 2>&1
if json_select data >/dev/null 2>&1; then
printf "%s\n" "::: travelmate runtime information"
json_get_keys keylist
for key in ${keylist}; do
json_get_var value "${key}"
printf " + %-18s : %s\n" "${key}" "${value}"
done
else
printf "%s\n" "::: no travelmate runtime information available"
fi
}
scan() {
local result radio="${1}"
: > "${trm_scanfile}"
if [ -z "${radio}" ]; then
radio="$(ubus -S call network.wireless status 2>/dev/null | jsonfilter -q -l1 -e '@[@.up=true].interfaces[0].ifname')"
fi
result="$(iwinfo "${radio}" scan 2>/dev/null |
awk 'BEGIN{FS="[[:space:]]"}/Address:/{var1=$NF}/ESSID:/{var2="";
for(i=12;i<=NF;i++)if(var2==""){var2=$i}else{var2=var2" "$i}}/Channel:/{var3=$NF}/Quality:/{split($NF,var0,"/")}/Encryption:/{var4="";
for(j=12;j<=NF;j++)if(var4==""){var4=$j}else{var4=var4" "$j};printf " %-11i%-10s%-35s%-20s%s\n",(var0[1]*100/var0[2]),var3,var2,var1,var4}' |
sort -rn)"
printf "::: %s\n:::\n" "Available nearby uplinks on '${radio}'"
if [ -n "${result}" ]; then
printf "%s\n" "${result}" > "${trm_scanfile}"
printf "%-15s%-10s%-35s%-20s%s\n" " Strength" "Channel" "ESSID" "BSSID" "Encryption"
printf "%s\n" " --------------------------------------------------------------------------------------"
printf "%s\n" "${result}"
else
printf "%s\n" "::: Empty resultset"
fi
}
setup() {
local iface cnt=0 input="${1:-"trm_wwan"}" zone="${2:-"wan"}" metric="${3:-"100"}"
iface="$(uci_get travelmate global trm_iface)"
input="${input//[+*~%&\$@\"\' ]/}"
zone="${zone//[+*~%&\$@\"\' ]/}"
metric="${metric//[^0-9]/}"
if [ -n "${iface}" ] && [ "${iface}" = "${input}" ]; then
printf "%s\n" "The uplink interface '${input}' has been already configured"
elif [ -n "${input}" ]; then
if [ -n "${iface}" ]; then
uci -q batch <<-EOC
del network."${iface}"
del network."${iface}6"
EOC
fi
uci -q batch <<-EOC
set travelmate.global.trm_enabled="1"
set travelmate.global.trm_iface="${input}"
set network."${input}"="interface"
set network."${input}".proto="dhcp"
set network."${input}".metric="${metric}"
set network."${input}6"=interface
set network."${input}6".device="@${input}"
set network."${input}6".proto="dhcpv6"
commit travelmate
commit network
EOC
while [ -n "$(uci -q get firewall.@zone["${cnt}"].name)" ]; do
if [ "$(uci -q get firewall.@zone["${cnt}"].name)" = "${zone}" ]; then
if [ -n "${iface}" ]; then
uci -q batch <<-EOC
del_list firewall.@zone["${cnt}"].network="${iface}"
del_list firewall.@zone["${cnt}"].network="${iface}6"
EOC
fi
uci -q batch <<-EOC
add_list firewall.@zone["${cnt}"].network="${input}"
add_list firewall.@zone["${cnt}"].network="${input}6"
commit firewall
EOC
break
fi
cnt=$((cnt + 1))
done
if [ -n "${iface}" ]; then
cnt=0
while [ -n "$(uci -q get wireless.@wifi-iface["${cnt}"].network)" ]; do
if [ "$(uci -q get wireless.@wifi-iface["${cnt}"].network)" = "${iface}" ]; then
uci -q set wireless.@wifi-iface["${cnt}"].network="${input}"
fi
cnt=$((cnt + 1))
done
uci -q commit wireless
fi
/etc/init.d/network reload >/dev/null 2>&1
/etc/init.d/firewall reload >/dev/null 2>&1
"${trm_init}" restart
fi
}
assoc() {
local result radio="${1}"
if [ -z "${radio}" ]; then
radio="$(ubus -S call network.wireless status 2>/dev/null | jsonfilter -q -l1 -e '@[@.*.*.config.mode="ap"].interfaces[0].ifname')"
fi
result="$(iwinfo "${radio}" assoc 2>/dev/null | awk '/^[A-Z0-9:]+/{printf " %s\n",$1}')"
printf "%s\n" "::: Associated wlan stations on '${radio}'"
printf "%s\n" ":::"
if [ -n "${result}" ]; then
printf "%s\n" " MAC addresses"
printf "%s\n" " -----------------"
printf "%s\n" "${result}"
else
printf "%s\n" "::: Empty resultset"
fi
}
service_triggers() {
local iface delay
iface="$(uci_get travelmate global trm_iface)"
delay="$(uci_get travelmate global trm_triggerdelay "2")"
PROCD_RELOAD_DELAY=$((delay * 1000))
if [ -n "${iface}" ]; then
procd_add_interface_trigger "interface.*.down" "${iface}" "${trm_init}" reload
fi
procd_add_raw_trigger "interface.*.up" "${PROCD_RELOAD_DELAY}" "${trm_init}" start
procd_add_config_trigger "config.change" "travelmate" "${trm_init}" restart
}
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