net/travelmate/files/travelmate.sh

   1 #!/bin/sh
   2 # travelmate, a wlan connection manager for travel router
   3 # Copyright (c) 2016-2023 Dirk Brenken (dev@brenken.org)
   4 # This is free software, licensed under the GNU General Public License v3.
   5
   6 # set (s)hellcheck exceptions
   7 # shellcheck disable=all
   8
   9 export LC_ALL=C
  10 export PATH="/usr/sbin:/usr/bin:/sbin:/bin"
  11
  12 trm_ver="2.1.1"
  13 trm_enabled="0"
  14 trm_debug="0"
  15 trm_iface=""
  16 trm_captive="1"
  17 trm_proactive="1"
  18 trm_vpn="1"
  19 trm_netcheck="0"
  20 trm_autoadd="0"
  21 trm_randomize="0"
  22 trm_mail="0"
  23 trm_mailpgm="/etc/travelmate/travelmate.mail"
  24 trm_vpnpgm="/etc/travelmate/travelmate.vpn"
  25 trm_minquality="35"
  26 trm_maxretry="3"
  27 trm_maxwait="30"
  28 trm_maxautoadd="5"
  29 trm_maxscan="10"
  30 trm_timeout="60"
  31 trm_radio=""
  32 trm_connection=""
  33 trm_wpaflags=""
  34 trm_ovpninfolist=""
  35 trm_vpnifacelist=""
  36 trm_vpninfolist=""
  37 trm_stdvpnservice=""
  38 trm_stdvpniface=""
  39 trm_rtfile="/tmp/trm_runtime.json"
  40 trm_wifi="$(command -v wifi)"
  41 trm_fetch="$(command -v curl)"
  42 trm_iwinfo="$(command -v iwinfo)"
  43 trm_logger="$(command -v logger)"
  44 trm_wpa="$(command -v wpa_supplicant)"
  45 trm_captiveurl="http://detectportal.firefox.com"
  46 trm_useragent="Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/118.0"
  47 trm_ntpfile="/var/state/travelmate.ntp"
  48 trm_vpnfile="/var/state/travelmate.vpn"
  49 trm_mailfile="/var/state/travelmate.mail"
  50 trm_refreshfile="/var/state/travelmate.refresh"
  51 trm_pidfile="/var/run/travelmate.pid"
  52 trm_action="${1:-"start"}"
  53
  54 # load travelmate environment
  55 #
  56 f_env() {
  57         local check wpa_checks result
  58
  59         if [ "${trm_action}" = "stop" ]; then
  60                 return
  61         fi
  62
  63         unset trm_stalist trm_radiolist trm_uplinklist trm_vpnifacelist trm_uplinkcfg trm_activesta trm_opensta
  64
  65         trm_sysver="$(ubus -S call system board 2>/dev/null | jsonfilter -q -e '@.model' -e '@.release.description' |
  66                 awk 'BEGIN{RS="";FS="\n"}{printf "%s, %s",$1,$2}')"
  67
  68         config_cb() {
  69                 local name="${1}" type="${2}"
  70
  71                 if [ "${name}" = "travelmate" ] && [ "${type}" = "global" ]; then
  72                         option_cb() {
  73                                 local option="${1}" value="${2}"
  74                                 eval "${option}=\"${value}\""
  75                         }
  76                         list_cb() {
  77                                 local option="${1}" value="${2}"
  78                                 if [ "${option}" = "trm_vpnifacelist" ]; then
  79                                         eval "trm_vpnifacelist=\"$(printf "%s" "${trm_vpnifacelist}") ${value}\""
  80                                 fi
  81                         }
  82                 elif [ "${name}" = "uplink" ]; then
  83                         if [ "$(uci_get "travelmate.${type}.opensta")" = "1" ]; then
  84                                 eval "trm_opensta=\"$((${trm_opensta:-0} + 1))\""
  85                         fi
  86                 else
  87                         option_cb() {
  88                                 return 0
  89                         }
  90                 fi
  91         }
  92         config_load travelmate
  93
  94         if [ "${trm_enabled}" != "1" ]; then
  95                 f_log "info" "travelmate is currently disabled, please set 'trm_enabled' to '1' to use this service"
  96                 /etc/init.d/travelmate stop
  97         elif [ -z "${trm_iface}" ]; then
  98                 f_log "info" "travelmate is currently not configured, please use the 'Interface Setup' in LuCI or the 'setup' option in CLI"
  99                 /etc/init.d/travelmate stop
 100         elif ! ubus -t "${trm_maxwait}" wait_for network.wireless network.interface."${trm_iface}" >/dev/null 2>&1; then
 101                 f_log "info" "travelmate interface '${trm_iface}' does not appear on ubus, please check your network setup"
 102                 /etc/init.d/travelmate stop
 103         fi
 104
 105         if [ -z "${trm_wpaflags}" ]; then
 106                 wpa_checks="sae owe eap suiteb192"
 107                 for check in ${wpa_checks}; do
 108                         if [ -x "${trm_wpa}" ]; then
 109                                 if "${trm_wpa}" -v"${check}" >/dev/null 2>&1; then
 110                                         result="$(f_trim "${result} ${check}: $(f_char 1)")"
 111                                 else
 112                                         result="$(f_trim "${result} ${check}: $(f_char 0)")"
 113                                 fi
 114                         fi
 115                 done
 116                 trm_wpaflags="$(printf "%s" "${result}" | awk '{printf "%s %s, %s %s, %s %s, %s %s",$1,$2,$3,$4,$5,$6,$7,$8}')"
 117         fi
 118
 119         config_load wireless
 120         config_foreach f_setdev "wifi-device"
 121         if [ -n "$(uci -q changes "wireless")" ]; then
 122                 uci_commit "wireless"
 123                 f_wifi
 124         fi
 125
 126         json_load_file "${trm_rtfile}" >/dev/null 2>&1
 127         if ! json_select data >/dev/null 2>&1; then
 128                 : >"${trm_rtfile}"
 129                 json_init
 130                 json_add_object "data"
 131         fi
 132
 133         if [ "${trm_vpn}" = "1" ] && [ -z "${trm_vpninfolist}" ]; then
 134                 config_load network
 135                 config_foreach f_getvpn "interface"
 136         fi
 137         f_log "debug" "f_env     ::: auto_sta: ${trm_opensta:-"-"}, wpa_flags: ${trm_wpaflags}, sys_ver: ${trm_sysver}"
 138 }
 139
 140 # trim helper function
 141 #
 142 f_trim() {
 143         local trim="${1}"
 144
 145         trim="${trim#"${trim%%[![:space:]]*}"}"
 146         trim="${trim%"${trim##*[![:space:]]}"}"
 147         printf "%s" "${trim}"
 148 }
 149
 150 # status helper function
 151 #
 152 f_char() {
 153         local result input="${1}"
 154
 155         if [ "${input}" = "1" ]; then
 156                 result="✔"
 157         else
 158                 result="✘"
 159         fi
 160         printf "%s" "${result}"
 161 }
 162
 163 # wifi helper function
 164 #
 165 f_wifi() {
 166         local status radio radio_up timeout="0"
 167
 168         "${trm_wifi}" reload
 169         for radio in ${trm_radiolist}; do
 170                 while true; do
 171                         if [ "${timeout}" -ge "${trm_maxwait}" ]; then
 172                                 break 2
 173                         fi
 174                         status="$("${trm_wifi}" status 2>/dev/null)"
 175                         if [ "$(printf "%s" "${status}" | jsonfilter -q -l1 -e "@.${radio}.up")" != "true" ] ||
 176                                 [ "$(printf "%s" "${status}" | jsonfilter -q -l1 -e "@.${radio}.pending")" != "false" ]; then
 177                                 if [ "${radio}" != "${radio_up}" ]; then
 178                                         "${trm_wifi}" up "${radio}"
 179                                         radio_up="${radio}"
 180                                 fi
 181                                 timeout="$((timeout + 1))"
 182                                 sleep 1
 183                         else
 184                                 continue 2
 185                         fi
 186                 done
 187         done
 188         if [ "${timeout}" -lt "${trm_maxwait}" ]; then
 189                 sleep "$((trm_maxwait / 6))"
 190                 timeout="$((timeout + (trm_maxwait / 6)))"
 191         fi
 192         f_log "debug" "f_wifi    ::: radio_list: ${trm_radiolist}, radio: ${radio}, timeout: ${timeout}"
 193 }
 194
 195 # vpn helper function
 196 #
 197 f_vpn() {
 198         local rc result info iface vpn vpn_service vpn_iface vpn_instance vpn_status vpn_action="${1}"
 199
 200         if  [ "${trm_vpn}" = "1" ] && [ -n "${trm_vpninfolist}" ]; then
 201                 vpn="$(f_getval "vpn")"
 202                 vpn_service="$(f_getval "vpnservice")"
 203                 vpn_iface="$(f_getval "vpniface")"
 204
 205                 if [ ! -f "${trm_vpnfile}" ] || { [ -f "${trm_vpnfile}" ] && [ "${vpn_action}" = "enable" ]; }; then
 206                         for info in ${trm_vpninfolist}; do
 207                                 iface="${info%%&&*}"
 208                                 [ "${iface}" = "${info}" ] && vpn_instance="" || vpn_instance="${info##*&&}"
 209                                 vpn_status="$(ifstatus "${iface}" | jsonfilter -q -l1 -e '@.up')"
 210                                 if [ "${vpn_status}" = "true" ]; then
 211                                         ifdown "${iface}"
 212                                         if [ -x "/etc/init.d/openvpn" ] && [ -n "${vpn_instance}" ] && /etc/init.d/openvpn running "${vpn_instance}"; then
 213                                                 /etc/init.d/openvpn stop "${vpn_instance}"
 214                                         fi
 215                                         f_log "info" "take down vpn interface '${iface}/${vpn_instance:-"-"}' (initial)"
 216                                 fi
 217                         done
 218                         rm -f "${trm_vpnfile}"
 219                 elif [ "${vpn}" = "1" ] && [ -n "${vpn_iface}" ] && [ "${vpn_action}" = "enable_keep" ]; then
 220                         for info in ${trm_vpninfolist}; do
 221                                 iface="${info%%&&*}"
 222                                 [ "${iface}" = "${info}" ] && vpn_instance="" || vpn_instance="${info##*&&}"
 223                                 vpn_status="$(ifstatus "${iface}" | jsonfilter -q -l1 -e '@.up')"
 224                                 if [ "${vpn_status}" = "true" ] && [ "${iface}" != "${vpn_iface}" ]; then
 225                                         ifdown "${iface}"
 226                                         if [ -x "/etc/init.d/openvpn" ] && [ -n "${vpn_instance}" ] && /etc/init.d/openvpn running "${vpn_instance}"; then
 227                                                 /etc/init.d/openvpn stop "${vpn_instance}"
 228                                         fi
 229                                         f_log "info" "take down vpn interface '${iface}/${vpn_instance:-"-"}' (switch)"
 230                                         rm -f "${trm_vpnfile}"
 231                                         break
 232                                 fi
 233                         done
 234                 fi
 235                 if [ -x "${trm_vpnpgm}" ] && [ -n "${vpn_service}" ] && [ -n "${vpn_iface}" ]; then
 236                         if { [ "${vpn_action}" = "disable" ] && [ -f "${trm_vpnfile}" ]; } ||
 237                                 { [ -s "${trm_ntpfile}" ] && { [ "${vpn}" = "1" ] && [ "${vpn_action%_*}" = "enable" ] && [ ! -f "${trm_vpnfile}" ]; } ||
 238                                 { [ "${vpn}" != "1" ] && [ "${vpn_action%_*}" = "enable" ] && [ -f "${trm_vpnfile}" ]; }; }; then
 239                                         result="$(f_net)"
 240                                         if [ "${result}" = "net ok" ] || [ "${vpn_action}" = "disable" ]; then
 241                                                 for info in ${trm_vpninfolist}; do
 242                                                         iface="${info%%&&*}"
 243                                                         if [ "${iface}" = "${vpn_iface}" ]; then
 244                                                                 [ "${iface}" = "${info}" ] && vpn_instance="" || vpn_instance="${info##*&&}"
 245                                                                 break
 246                                                         fi
 247                                                 done
 248                                                 f_log "debug" "f_vpn     ::: vpn: ${vpn:-"0"}, action: ${vpn_action}, service: ${vpn_service}, iface: ${vpn_iface}, instance: ${vpn_instance}"
 249                                                 "${trm_vpnpgm}" "${vpn:-"0"}" "${vpn_action}" "${vpn_service}" "${vpn_iface}" "${vpn_instance}" >/dev/null 2>&1
 250                                                 rc="${?}"
 251                                         fi
 252                         fi
 253                         [ -n "${rc}" ] && f_jsnup
 254                 fi
 255         fi
 256         f_log "debug" "f_vpn     ::: vpn: ${trm_vpn:-"-"}, enabled: ${vpn:-"-"}, action: ${vpn_action}, service: ${vpn_service:-"-"}, iface: ${vpn_iface:-"-"}, instance: ${vpn_instance:-"-"}, infolist: ${trm_vpninfolist:-"-"}, result: ${result}, rc: ${rc:-"-"}"
 257 }
 258
 259 # mac helper function
 260 #
 261 f_mac() {
 262         local result ifname macaddr action="${1}" section="${2}"
 263
 264         if [ "${action}" = "set" ]; then
 265                 macaddr="$(f_getval "macaddr")"
 266                 if [ -n "${macaddr}" ]; then
 267                         result="${macaddr}"
 268                         uci_set "wireless" "${section}" "macaddr" "${result}"
 269                 elif [ "${trm_randomize}" = "1" ]; then
 270                         result="$(hexdump -n6 -ve '/1 "%.02X "' /dev/random 2>/dev/null |
 271                                 awk -v local="2,6,A,E" -v seed="$(date +%s)" 'BEGIN{srand(seed)}NR==1{split(local,b,",");
 272                                 seed=int(rand()*4+1);printf "%s%s:%s:%s:%s:%s:%s",substr($1,0,1),b[seed],$2,$3,$4,$5,$6}')"
 273                         uci_set "wireless" "${section}" "macaddr" "${result}"
 274                 else
 275                         uci_remove "wireless" "${section}" "macaddr" 2>/dev/null
 276                         ifname="$(ubus -S call network.wireless status 2>/dev/null | jsonfilter -q -l1 -e '@.*.interfaces[@.config.mode="sta"].ifname')"
 277                         result="$(${trm_iwinfo} "${ifname}" info 2>/dev/null | awk '/Access Point:/{printf "%s",$3}')"
 278                 fi
 279         elif [ "${action}" = "get" ]; then
 280                 result="$(uci_get "wireless" "${section}" "macaddr")"
 281                 if [ -z "${result}" ]; then
 282                         ifname="$(ubus -S call network.wireless status 2>/dev/null | jsonfilter -q -l1 -e '@.*.interfaces[@.config.mode="sta"].ifname')"
 283                         result="$(${trm_iwinfo} "${ifname}" info 2>/dev/null | awk '/Access Point:/{printf "%s",$3}')"
 284                 fi
 285         fi
 286         printf "%s" "${result}"
 287         f_log "debug" "f_mac     ::: action: ${action:-"-"}, section: ${section:-"-"}, macaddr: ${macaddr:-"-"}, result: ${result:-"-"}"
 288 }
 289
 290 # set connection information
 291 #
 292 f_ctrack() {
 293         local expiry action="${1}"
 294
 295         if [ -n "${trm_uplinkcfg}" ]; then
 296                 case "${action}" in
 297                         "start")
 298                                 uci_remove "travelmate" "${trm_uplinkcfg}" "con_start" 2>/dev/null
 299                                 uci_remove "travelmate" "${trm_uplinkcfg}" "con_end" 2>/dev/null
 300                                 if [ -s "${trm_ntpfile}" ]; then
 301                                         uci_set "travelmate" "${trm_uplinkcfg}" "con_start" "$(date "+%Y.%m.%d-%H:%M:%S")"
 302                                 fi
 303                                 ;;
 304                         "refresh")
 305                                 if [ -s "${trm_ntpfile}" ] && [ -z "$(uci_get "travelmate" "${trm_uplinkcfg}" "con_start")" ]; then
 306                                         uci_set "travelmate" "${trm_uplinkcfg}" "con_start" "$(date "+%Y.%m.%d-%H:%M:%S")"
 307                                 fi
 308                                 ;;
 309                         "end")
 310                                 if [ -s "${trm_ntpfile}" ]; then
 311                                         uci_set "travelmate" "${trm_uplinkcfg}" "con_end" "$(date "+%Y.%m.%d-%H:%M:%S")"
 312                                 fi
 313                                 ;;
 314                         "start_expiry")
 315                                 if [ -s "${trm_ntpfile}" ]; then
 316                                         expiry="$(uci_get "travelmate" "${trm_uplinkcfg}" "con_start_expiry")"
 317                                         uci_set "travelmate" "${trm_uplinkcfg}" "enabled" "0"
 318                                         uci_set "travelmate" "${trm_uplinkcfg}" "con_end" "$(date "+%Y.%m.%d-%H:%M:%S")"
 319                                         f_log "info" "uplink '${radio}/${essid}/${bssid:-"-"}' expired after ${expiry} minutes"
 320                                 fi
 321                                 ;;
 322                         "end_expiry")
 323                                 if [ -s "${trm_ntpfile}" ]; then
 324                                         expiry="$(uci_get "travelmate" "${trm_uplinkcfg}" "con_end_expiry")"
 325                                         uci_set "travelmate" "${trm_uplinkcfg}" "enabled" "1"
 326                                         uci_remove "travelmate" "${trm_uplinkcfg}" "con_start" 2>/dev/null
 327                                         uci_remove "travelmate" "${trm_uplinkcfg}" "con_end" 2>/dev/null
 328                                         f_log "info" "uplink '${radio}/${essid}/${bssid:-"-"}' re-enabled after ${expiry} minutes"
 329                                 fi
 330                                 ;;
 331                         "disabled")
 332                                 uci_set "travelmate" "${trm_uplinkcfg}" "enabled" "0"
 333                                 if [ -s "${trm_ntpfile}" ]; then
 334                                         uci_set "travelmate" "${trm_uplinkcfg}" "con_end" "$(date "+%Y.%m.%d-%H:%M:%S")"
 335                                 fi
 336                                 ;;
 337                 esac
 338                 if [ -n "$(uci -q changes "travelmate")" ]; then
 339                         uci_commit "travelmate"
 340                         if [ ! -f "${trm_refreshfile}" ]; then
 341                                 printf "%s" "cfg_reload" >"${trm_refreshfile}"
 342                         fi
 343                 fi
 344         fi
 345         f_log "debug" "f_ctrack  ::: action: ${action:-"-"}, uplink_config: ${trm_uplinkcfg:-"-"}"
 346 }
 347
 348 # get openvpn information
 349 #
 350 f_getovpn() {
 351         local file instance device
 352
 353         for file in /etc/openvpn/*.conf /etc/openvpn/*.ovpn; do
 354                 if [ -f "${file}" ]; then
 355                         instance="${file##*/}"
 356                         instance="${instance%.conf}"
 357                         instance="${instance%.ovpn}"
 358                         device="$(awk '/^[[:space:]]*dev /{print $2}' "${file}")"
 359                         [ "${device}" = "tun" ] && device="tun0"
 360                         [ "${device}" = "tap" ] && device="tap0"
 361                         if [ -n "${device}" ] && [ -n "${instance}" ] && ! printf "%s" "${trm_ovpninfolist}" | grep -q "${device}"; then
 362                                 trm_ovpninfolist="${trm_ovpninfolist} ${device}&&${instance}"
 363                         fi
 364                 fi
 365         done
 366
 367         uci_config() {
 368                 local device section="${1}"
 369
 370                 device="$(uci_get "openvpn" "${section}" "dev")"
 371                 [ "${device}" = "tun" ] && device="tun0"
 372                 [ "${device}" = "tap" ] && device="tap0"
 373                 if [ -n "${device}" ] && ! printf "%s" "${trm_ovpninfolist}" | grep -q "${device}"; then
 374                         trm_ovpninfolist="${trm_ovpninfolist} ${device}&&${section}"
 375                 fi
 376         }
 377         if [ -f "/etc/config/openvpn" ]; then
 378                 config_load openvpn
 379                 config_foreach uci_config "openvpn"
 380         fi
 381         f_log "debug" "f_getovpn ::: ovpninfolist: ${trm_ovpninfolist:-"-"}"
 382 }
 383
 384 # get logical vpn network interfaces
 385 #
 386 f_getvpn() {
 387         local info proto device iface="${1}"
 388
 389         proto="$(uci_get "network" "${iface}" "proto")"
 390         device="$(uci_get "network" "${iface}" "device")"
 391         if [ "${proto}" = "wireguard" ]; then
 392                 if { [ -z "${trm_vpnifacelist}" ] || printf "%s" "${trm_vpnifacelist}" | grep -q "${iface}"; }; then
 393                         if ! printf "%s" "${trm_vpninfolist}" | grep -q "${iface}"; then
 394                                 trm_vpninfolist="$(f_trim "${trm_vpninfolist} ${iface}")"
 395                         fi
 396                 fi
 397         elif [ "${proto}" = "none" ] && [ -n "${device}" ]; then
 398                 if [ -z "${trm_ovpninfolist}" ]; then
 399                         f_getovpn
 400                 fi
 401                 if { [ -z "${trm_vpnifacelist}" ] || printf "%s" "${trm_vpnifacelist}" | grep -q "${iface}"; }; then
 402                         for info in ${trm_ovpninfolist}; do
 403                                 if [ "${info%%&&*}" = "${device}" ]; then
 404                                         if ! printf "%s" "${trm_vpninfolist}" | grep -q "${iface}"; then
 405                                                 trm_vpninfolist="$(f_trim "${trm_vpninfolist} ${iface}&&${info##*&&}")"
 406                                                 break
 407                                         fi
 408                                 fi
 409                         done
 410                 fi
 411         fi
 412         f_log "debug" "f_getvpn  ::: iface: ${iface:-"-"}, proto: ${proto:-"-"}, device: ${device:-"-"}, ifacelist: ${trm_vpnifacelist:-"-"}, infolist: ${trm_vpninfolist:-"-"}"
 413 }
 414
 415 # get wan gateway addresses
 416 #
 417 f_getgw() {
 418         local result wan4_if wan4_gw wan6_if wan6_gw
 419
 420         network_flush_cache
 421         network_find_wan wan4_if
 422         network_find_wan6 wan6_if
 423         network_get_gateway wan4_gw "${wan4_if}"
 424         network_get_gateway6 wan6_gw "${wan6_if}"
 425         if [ -n "${wan4_gw}" ] || [ -n "${wan6_gw}" ]; then
 426                 result="${wan4_gw} ${wan6_gw}"
 427         fi
 428         printf "%s" "${result}"
 429         f_log "debug" "f_getgw   ::: wan4_gw: ${wan4_gw:-"-"}, wan6_gw: ${wan6_gw:-"-"}, result: ${result:-"-"}"
 430 }
 431
 432 # get uplink config section
 433 #
 434 f_getcfg() {
 435         local t_radio t_essid t_bssid radio="${1}" essid="${2}" bssid="${3}" cnt="0"
 436
 437         while uci_get "travelmate" "@uplink[${cnt}]" >/dev/null 2>&1; do
 438                 t_radio="$(uci_get "travelmate" "@uplink[${cnt}]" "device")"
 439                 t_essid="$(uci_get "travelmate" "@uplink[${cnt}]" "ssid")"
 440                 t_bssid="$(uci_get "travelmate" "@uplink[${cnt}]" "bssid")"
 441                 if [ -n "${radio}" ] && [ -n "${essid}" ] &&
 442                         [ "${t_radio}" = "${radio}" ] && [ "${t_essid}" = "${essid}" ] && [ "${t_bssid}" = "${bssid}" ]; then
 443                         trm_uplinkcfg="@uplink[${cnt}]"
 444                         break
 445                 fi
 446                 cnt="$((cnt + 1))"
 447         done
 448         f_log "debug" "f_getcfg  ::: status: ${status}, section: ${section}, uplink_config: ${trm_uplinkcfg:-"-"}"
 449 }
 450
 451 # get travelmate option value in 'uplink' sections
 452 #
 453 f_getval() {
 454         local result t_option="${1}"
 455
 456         if [ -n "${trm_uplinkcfg}" ]; then
 457                 result="$(uci_get "travelmate" "${trm_uplinkcfg}" "${t_option}")"
 458                 printf "%s" "${result}"
 459         fi
 460         f_log "debug" "f_getval  ::: option: ${t_option:-"-"}, result: ${result:-"-"}, uplink_config: ${trm_uplinkcfg:-"-"}"
 461 }
 462
 463 # set 'wifi-device' sections
 464 #
 465 f_setdev() {
 466         local disabled radio="${1}"
 467
 468         disabled="$(uci_get "wireless" "${radio}" "disabled")"
 469         if [ "${disabled}" = "1" ]; then
 470                 uci_set wireless "${radio}" "disabled" "0"
 471         fi
 472         if [ -n "${trm_radio}" ] && [ -z "${trm_radiolist}" ]; then
 473                 trm_radiolist="${trm_radio}"
 474         elif [ -z "${trm_radio}" ] && ! printf "%s" "${trm_radiolist}" | grep -q "${radio}"; then
 475                 trm_radiolist="$(f_trim "${trm_radiolist} ${radio}")"
 476         fi
 477         f_log "debug" "f_setdev  ::: radio: ${radio:-"-"}, radio_list(cnf/cur): ${trm_radio:-"-"}/${trm_radiolist:-"-"}, disabled: ${disabled:-"-"}"
 478 }
 479
 480 # set 'wifi-iface' sections
 481 #
 482 f_setif() {
 483         local mode radio essid bssid enabled disabled con_start con_end con_start_expiry con_end_expiry section="${1}" proactive="${2}"
 484
 485         mode="$(uci_get "wireless" "${section}" "mode")"
 486         radio="$(uci_get "wireless" "${section}" "device")"
 487         essid="$(uci_get "wireless" "${section}" "ssid")"
 488         bssid="$(uci_get "wireless" "${section}" "bssid")"
 489         disabled="$(uci_get "wireless" "${section}" "disabled")"
 490
 491         f_getcfg "${radio}" "${essid}" "${bssid}"
 492
 493         enabled="$(f_getval "enabled")"
 494         con_start="$(f_getval "con_start")"
 495         con_end="$(f_getval "con_end")"
 496         con_start_expiry="$(f_getval "con_start_expiry")"
 497         con_end_expiry="$(f_getval "con_end_expiry")"
 498
 499         if [ "${enabled}" = "0" ] && [ -n "${con_end}" ] && [ -n "${con_end_expiry}" ] && [ "${con_end_expiry}" != "0" ]; then
 500                 d1="$(date -d "${con_end}" "+%s")"
 501                 d2="$(date "+%s")"
 502                 d3="$(((d2 - d1) / 60))"
 503                 if [ "${d3}" -ge "${con_end_expiry}" ]; then
 504                         enabled="1"
 505                         f_ctrack "end_expiry"
 506                 fi
 507         elif [ "${enabled}" = "1" ] && [ -n "${con_start}" ] && [ -n "${con_start_expiry}" ] && [ "${con_start_expiry}" != "0" ]; then
 508                 d1="$(date -d "${con_start}" "+%s")"
 509                 d2="$(date "+%s")"
 510                 d3="$((d1 + (con_start_expiry * 60)))"
 511                 if [ "${d2}" -gt "${d3}" ]; then
 512                         enabled="0"
 513                         f_ctrack "start_expiry"
 514                 fi
 515         fi
 516
 517         if [ "${mode}" = "sta" ]; then
 518                 if [ "${enabled}" = "0" ] || { { [ -z "${disabled}" ] || [ "${disabled}" = "0" ]; } &&
 519                         { [ "${proactive}" = "0" ] || [ "${trm_ifstatus}" != "true" ]; }; }; then
 520                         uci_set "wireless" "${section}" "disabled" "1"
 521                 elif [ "${enabled}" = "1" ] && [ "${disabled}" = "0" ] && [ "${trm_ifstatus}" = "true" ] && [ "${proactive}" = "1" ]; then
 522                         if [ -z "${trm_activesta}" ]; then
 523                                 trm_activesta="${section}"
 524                         else
 525                                 uci_set "wireless" "${section}" "disabled" "1"
 526                         fi
 527                 fi
 528                 if [ "${enabled}" = "1" ]; then
 529                         trm_stalist="$(f_trim "${trm_stalist} ${section}-${radio}")"
 530                 fi
 531         fi
 532         f_log "debug" "f_setif   ::: enabled: ${enabled}, section: ${section}, active_sta: ${trm_activesta:-"-"}, uplink_config: ${trm_uplinkcfg:-"-"}"
 533 }
 534
 535 # add open uplinks
 536 #
 537 f_addsta() {
 538         local wifi_cfg trm_cfg new_uplink="1" offset="1" radio="${1}" essid="${2}"
 539
 540         if [ "${trm_maxautoadd}" = "0" ] || [ "${trm_opensta:-0}" -lt "${trm_maxautoadd}" ]; then
 541                 config_cb() {
 542                         local type="${1}" name="${2}"
 543
 544                         if [ "${type}" = "wifi-iface" ]; then
 545                                 if [ "$(uci_get "wireless.${name}.ssid")" = "${essid}" ] &&
 546                                         [ "$(uci_get "wireless.${name}.device")" = "${radio}" ]; then
 547                                         new_uplink="0"
 548                                         return 0
 549                                 fi
 550                                 offset="$((offset + 1))"
 551                         fi
 552                 }
 553                 config_load wireless
 554         else
 555                 new_uplink="0"
 556         fi
 557
 558         if [ "${new_uplink}" = "1" ]; then
 559                 wifi_cfg="trm_uplink$((offset + 1))"
 560                 while [ -n "$(uci_get "wireless.${wifi_cfg}")" ]; do
 561                         offset="$((offset + 1))"
 562                         wifi_cfg="trm_uplink${offset}"
 563                 done
 564                 uci -q batch <<-EOC
 565                         set wireless."${wifi_cfg}"="wifi-iface"
 566                         set wireless."${wifi_cfg}".mode="sta"
 567                         set wireless."${wifi_cfg}".network="${trm_iface}"
 568                         set wireless."${wifi_cfg}".device="${radio}"
 569                         set wireless."${wifi_cfg}".ssid="${essid}"
 570                         set wireless."${wifi_cfg}".encryption="none"
 571                         set wireless."${wifi_cfg}".disabled="1"
 572                 EOC
 573                 trm_cfg="$(uci -q add travelmate uplink)"
 574                 uci -q batch <<-EOC
 575                         set travelmate."${trm_cfg}".device="${radio}"
 576                         set travelmate."${trm_cfg}".ssid="${essid}"
 577                         set travelmate."${trm_cfg}".opensta="1"
 578                         set travelmate."${trm_cfg}".con_start_expiry="0"
 579                         set travelmate."${trm_cfg}".con_end_expiry="0"
 580                         set travelmate."${trm_cfg}".enabled="1"
 581                 EOC
 582                 if [ -n "${trm_stdvpnservice}" ] && [ -n "${trm_stdvpniface}" ]; then
 583                         uci -q batch <<-EOC
 584                                 set travelmate."${trm_cfg}".vpnservice="${trm_stdvpnservice}"
 585                                 set travelmate."${trm_cfg}".vpniface="${trm_stdvpniface}"
 586                                 set travelmate."${trm_cfg}".vpn="1"
 587                         EOC
 588                 fi
 589                 trm_opensta="$((trm_opensta + 1))"
 590                 uci_commit "travelmate"
 591                 uci_commit "wireless"
 592                 f_wifi
 593                 if [ ! -f "${trm_refreshfile}" ]; then
 594                         printf "%s" "ui_reload" >"${trm_refreshfile}"
 595                 fi
 596                 f_log "info" "open uplink '${radio}/${essid}' added to wireless config"
 597                 printf "%s" "${wifi_cfg}-${radio}"
 598         fi
 599         f_log "debug" "f_addsta  ::: radio: ${radio:-"-"}, essid: ${essid}, opensta/maxautoadd: ${trm_opensta:-"-"}/${trm_maxautoadd:-"-"}, new_uplink: ${new_uplink}, offset: ${offset}"
 600 }
 601
 602 # check net status
 603 #
 604 f_net() {
 605         local err_msg raw json_raw html_raw html_cp js_cp json_ec json_rc json_cp json_ed result="net nok"
 606
 607         raw="$(${trm_fetch} --user-agent "${trm_useragent}" --referer "http://www.example.com" --header "Cache-Control: no-cache, no-store, must-revalidate, max-age=0" --write-out "%{json}" --silent --max-time $((trm_maxwait / 6)) "${trm_captiveurl}")"
 608         json_raw="${raw#*\{}"
 609         html_raw="${raw%%\{*}"
 610         if [ -n "${json_raw}" ]; then
 611                 json_ec="$(printf "%s" "{${json_raw}" | jsonfilter -q -l1 -e '@.exitcode')"
 612                 json_rc="$(printf "%s" "{${json_raw}" | jsonfilter -q -l1 -e '@.response_code')"
 613                 json_cp="$(printf "%s" "{${json_raw}" | jsonfilter -q -l1 -e '@.redirect_url' | awk 'BEGIN{FS="/"}{printf "%s",tolower($3)}')"
 614                 if [ "${json_ec}" = "0" ]; then
 615                         if [ -n "${json_cp}" ]; then
 616                                 result="net cp '${json_cp}'"
 617                         else
 618                                 if [ "${json_rc}" = "200" ] || [ "${json_rc}" = "204" ]; then
 619                                         html_cp="$(printf "%s" "${html_raw}" | awk 'match(tolower($0),/^.*<meta[ \t]+http-equiv=['\''"]*refresh.*[ \t;]url=/){print substr(tolower($0),RLENGTH+1)}' | awk 'BEGIN{FS="[:/]"}{printf "%s",$4;exit}')"
 620                                         js_cp="$(printf "%s" "${html_raw}" | awk 'match(tolower($0),/^.*location\.href=['\''"]*/){print substr(tolower($0),RLENGTH+1)}' | awk 'BEGIN{FS="[:/]"}{printf "%s",$4;exit}')"
 621                                         if [ -n "${html_cp}" ]; then
 622                                                 result="net cp '${html_cp}'"
 623                                         elif [ -n "${js_cp}" ]; then
 624                                                 result="net cp '${js_cp}'"
 625                                         else
 626                                                 result="net ok"
 627                                         fi
 628                                 fi
 629                         fi
 630                 else
 631                         err_msg="$(printf "%s" "{${json_raw}" | jsonfilter -q -l1 -e '@.errormsg')"
 632                         json_ed="$(printf "%s" "{${err_msg}" | awk '/([[:alnum:]_-]{1,63}\.)+[[:alpha:]]+$/{printf "%s",tolower($NF)}')"
 633                         if [ "${json_ec}" = "6" ]; then
 634                                 if [ -n "${json_ed}" ] && [ "${json_ed}" != "${trm_captiveurl#http*://*}" ]; then
 635                                         result="net cp '${json_ed}'"
 636                                 fi
 637                         elif [ "${json_ec}" = "28" ]; then
 638                                 if [ -n "$(f_getgw)" ]; then
 639                                         result="net ok"
 640                                 fi
 641                         fi
 642                 fi
 643         fi
 644         printf "%s" "${result}"
 645         f_log "debug" "f_net     ::: fetch: ${trm_fetch}, timeout: $((trm_maxwait / 6)), cp (json/html/js): ${json_cp:-"-"}/${html_cp:-"-"}/${js_cp:-"-"}, result: ${result}, error (rc/msg): ${json_ec}/${err_msg:-"-"}, url: ${trm_captiveurl}, user_agent: ${trm_useragent}"
 646 }
 647
 648 # check interface status
 649 #
 650 f_check() {
 651         local ifname radio dev_status result login_script login_script_args cp_domain wait_time="0" enabled="1" mode="${1}" status="${2}" sta_radio="${3}" sta_essid="${4}" sta_bssid="${5}"
 652
 653         if [ "${mode}" = "initial" ] || [ "${mode}" = "dev" ]; then
 654                 json_get_var station_id "station_id"
 655                 sta_radio="${station_id%%/*}"
 656                 sta_essid="${station_id%/*}"
 657                 sta_essid="${sta_essid#*/}"
 658                 sta_bssid="${station_id##*/}"
 659                 sta_bssid="${sta_bssid//-/}"
 660         fi
 661         f_getcfg "${sta_radio}" "${sta_essid}" "${sta_bssid}"
 662
 663         if [ "${mode}" != "rev" ] && [ -n "${sta_radio}" ] && [ "${sta_radio}" != "-" ] && [ -n "${sta_essid}" ] && [ "${sta_essid}" != "-" ]; then
 664                 enabled="$(f_getval "enabled")"
 665         fi
 666         if { [ "${mode}" != "initial" ] && [ "${mode}" != "dev" ] && [ "${status}" = "false" ]; } ||
 667                 { [ "${mode}" = "dev" ] && { [ "${status}" = "false" ] || { [ "${trm_ifstatus}" != "${status}" ] && [ "${enabled}" = "0" ]; }; }; }; then
 668                 f_wifi
 669         fi
 670         while [ "${wait_time}" -le "${trm_maxwait}" ]; do
 671                 [ "${wait_time}" -gt "0" ] && sleep 1
 672                 wait_time="$((wait_time + 1))"
 673                 dev_status="$(ubus -S call network.wireless status 2>/dev/null)"
 674                 if [ -n "${dev_status}" ]; then
 675                         if [ "${mode}" = "dev" ]; then
 676                                 if [ "${trm_ifstatus}" != "${status}" ]; then
 677                                         trm_ifstatus="${status}"
 678                                         f_jsnup
 679                                 fi
 680                                 if [ "${status}" = "false" ]; then
 681                                         sleep "$((trm_maxwait / 5))"
 682                                 fi
 683                                 break
 684                         elif [ "${mode}" = "rev" ]; then
 685                                 unset trm_connection
 686                                 trm_ifstatus="${status}"
 687                                 break
 688                         else
 689                                 ifname="$(printf "%s" "${dev_status}" | jsonfilter -q -l1 -e '@.*.interfaces[@.config.mode="sta"].ifname')"
 690                                 if [ -n "${ifname}" ] && [ "${enabled}" = "1" ]; then
 691                                         trm_ifquality="$(${trm_iwinfo} "${ifname}" info 2>/dev/null | awk -F '[ ]' '/Link Quality: [0-9]+\/[0-9]+/{split($NF,var0,"/");printf "%i\n",(var0[1]*100/var0[2])}')"
 692                                         if [ -z "${trm_ifquality}" ]; then
 693                                                 continue
 694                                         elif [ "${trm_ifquality}" -ge "${trm_minquality}" ]; then
 695                                                 trm_ifstatus="$(ubus -S call network.interface dump 2>/dev/null | jsonfilter -q -l1 -e "@.interface[@.device=\"${ifname}\"].up")"
 696                                                 if [ "${trm_ifstatus}" = "true" ]; then
 697                                                         result="$(f_net)"
 698                                                         if [ "${trm_captive}" = "1" ]; then
 699                                                                 while true; do
 700                                                                         cp_domain="$(printf "%s" "${result}" | awk -F '['\''| ]' '/^net cp/{printf "%s",$4}')"
 701                                                                         if [ -x "/etc/init.d/dnsmasq" ] && [ -f "/etc/config/dhcp" ] &&
 702                                                                                 [ -n "${cp_domain}" ] && ! uci_get "dhcp" "@dnsmasq[0]" "rebind_domain" | grep -q "${cp_domain}"; then
 703                                                                                 uci_add_list "dhcp" "@dnsmasq[0]" "rebind_domain" "${cp_domain}"
 704                                                                                 uci_commit "dhcp"
 705                                                                                 /etc/init.d/dnsmasq reload
 706                                                                                 f_log "info" "captive portal domain '${cp_domain}' added to to dhcp rebind whitelist"
 707                                                                         else
 708                                                                                 break
 709                                                                         fi
 710                                                                         result="$(f_net)"
 711                                                                 done
 712                                                                 if [ -n "${cp_domain}" ]; then
 713                                                                         trm_connection="${result:-"-"}/${trm_ifquality}"
 714                                                                         f_jsnup
 715                                                                         login_script="$(f_getval "script")"
 716                                                                         if [ -x "${login_script}" ]; then
 717                                                                                 login_script_args="$(f_getval "script_args")"
 718                                                                                 "${login_script}" ${login_script_args} >/dev/null 2>&1
 719                                                                                 rc="${?}"
 720                                                                                 if [ "${rc}" = "255" ]; then
 721                                                                                         f_log "info" "captive portal login script for '${cp_domain}' failed with rc '${rc}'"
 722                                                                                         unset trm_connection
 723                                                                                         trm_ifstatus="${status}"
 724                                                                                         f_jsnup
 725                                                                                         break
 726                                                                                 else
 727                                                                                         f_log "info" "captive portal login script for '${cp_domain}' has been finished  with rc '${rc}'"
 728                                                                                         if [ "${rc}" = "0" ]; then
 729                                                                                                 result="$(f_net)"
 730                                                                                         fi
 731                                                                                 fi
 732                                                                         fi
 733                                                                 fi
 734                                                         fi
 735                                                         if [ "${result}" = "net nok" ]; then
 736                                                                 f_vpn "disable"
 737                                                                 if [ "${trm_netcheck}" = "1" ]; then
 738                                                                         f_log "info" "uplink has no internet"
 739                                                                         trm_ifstatus="${status}"
 740                                                                         f_jsnup
 741                                                                         break
 742                                                                 fi
 743                                                         fi
 744                                                         trm_connection="${result:-"-"}/${trm_ifquality}"
 745                                                         f_jsnup
 746                                                         break
 747                                                 fi
 748                                         elif [ -n "${trm_connection}" ] && { [ "${trm_netcheck}" = "1" ] || [ "${mode}" = "initial" ]; }; then
 749                                                 f_log "info" "uplink is out of range (${trm_ifquality}/${trm_minquality})"
 750                                                 f_vpn "disable"
 751                                                 unset trm_connection
 752                                                 trm_ifstatus="${status}"
 753                                                 f_ctrack "end"
 754                                                 f_jsnup
 755                                                 break
 756                                         elif [ "${mode}" = "initial" ] || [ "${mode}" = "sta" ]; then
 757                                                 unset trm_connection
 758                                                 trm_ifstatus="${status}"
 759                                                 f_jsnup
 760                                                 break
 761                                         fi
 762                                 elif [ -n "${trm_connection}" ]; then
 763                                         f_vpn "disable"
 764                                         unset trm_connection
 765                                         trm_ifstatus="${status}"
 766                                         f_jsnup
 767                                         break
 768                                 elif [ "${mode}" = "initial" ]; then
 769                                         trm_ifstatus="${status}"
 770                                         f_jsnup
 771                                         break
 772                                 fi
 773                         fi
 774                 fi
 775                 if [ "${mode}" = "initial" ]; then
 776                         trm_ifstatus="${status}"
 777                         f_jsnup
 778                         break
 779                 fi
 780         done
 781         f_log "debug" "f_check   ::: mode: ${mode}, name: ${ifname:-"-"}, status: ${trm_ifstatus}, enabled: ${enabled}, connection: ${trm_connection:-"-"}, wait: ${wait_time}, max_wait: ${trm_maxwait}, min_quality: ${trm_minquality}, captive: ${trm_captive}, netcheck: ${trm_netcheck}"
 782 }
 783
 784 # update runtime information
 785 #
 786 f_jsnup() {
 787         local vpn vpn_iface section last_date sta_iface sta_radio sta_essid sta_bssid sta_mac dev_status status="${trm_ifstatus}" ntp_done="0" vpn_done="0" mail_done="0"
 788
 789         if [ "${status}" = "true" ]; then
 790                 status="connected (${trm_connection:-"-"})"
 791                 dev_status="$(ubus -S call network.wireless status 2>/dev/null)"
 792                 section="$(printf "%s" "${dev_status}" | jsonfilter -q -l1 -e '@.*.interfaces[@.config.mode="sta"].section')"
 793                 if [ -n "${section}" ]; then
 794                         sta_iface="$(uci_get "wireless" "${section}" "network")"
 795                         sta_radio="$(uci_get "wireless" "${section}" "device")"
 796                         sta_essid="$(uci_get "wireless" "${section}" "ssid")"
 797                         sta_bssid="$(uci_get "wireless" "${section}" "bssid")"
 798                         sta_mac="$(f_mac "get" "${section}")"
 799                         f_getcfg "${sta_radio}" "${sta_essid}" "${sta_bssid}"
 800                 fi
 801                 json_get_var last_date "last_run"
 802
 803                 vpn="$(f_getval "vpn")"
 804                 if  [ "${trm_vpn}" = "1" ] && [ -n "${trm_vpninfolist}" ] && [ "${vpn}" = "1" ] && [ -f "${trm_vpnfile}" ]; then
 805                         vpn_iface="$(f_getval "vpniface")"
 806                         vpn_done="1"
 807                 fi
 808         elif [ "${status}" = "error" ]; then
 809                 unset trm_connection
 810                 status="program error"
 811         else
 812                 unset trm_connection
 813                 status="running (not connected)"
 814         fi
 815         if [ -z "${last_date}" ]; then
 816                 last_date="$(date "+%Y.%m.%d-%H:%M:%S")"
 817         fi
 818         if [ -s "${trm_ntpfile}" ]; then
 819                 ntp_done="1"
 820         fi
 821         if [ "${trm_mail}" = "1" ] && [ -f "${trm_mailfile}" ]; then
 822                 mail_done="1"
 823         fi
 824         json_add_string "travelmate_status" "${status}"
 825         json_add_string "travelmate_version" "${trm_ver}"
 826         json_add_string "station_id" "${sta_radio:-"-"}/${sta_essid:-"-"}/${sta_bssid:-"-"}"
 827         json_add_string "station_mac" "${sta_mac:-"-"}"
 828         json_add_string "station_interfaces" "${sta_iface:-"-"}, ${vpn_iface:-"-"}"
 829         json_add_string "wpa_flags" "${trm_wpaflags:-"-"}"
 830         json_add_string "run_flags" "captive: $(f_char ${trm_captive}), proactive: $(f_char ${trm_proactive}), netcheck: $(f_char ${trm_netcheck}), autoadd: $(f_char ${trm_autoadd}), randomize: $(f_char ${trm_randomize})"
 831         json_add_string "ext_hooks" "ntp: $(f_char ${ntp_done}), vpn: $(f_char ${vpn_done}), mail: $(f_char ${mail_done})"
 832         json_add_string "last_run" "${last_date}"
 833         json_add_string "system" "${trm_sysver}"
 834         json_dump >"${trm_rtfile}"
 835
 836         if [ "${status%% (net ok/*}" = "connected" ] && [ "${trm_mail}" = "1" ] && [ -x "${trm_mailpgm}" ] && [ "${ntp_done}" = "1" ] && [ "${mail_done}" = "0" ]; then
 837                 if [ "${trm_vpn}" != "1" ] || [ "${vpn}" != "1" ] || [ -z "${trm_vpninfolist}" ] || [ "${vpn_done}" = "1" ]; then
 838                         : >"${trm_mailfile}"
 839                         "${trm_mailpgm}" >/dev/null 2>&1
 840                 fi
 841         fi
 842         f_log "debug" "f_jsnup   ::: section: ${section:-"-"}, status: ${status:-"-"}, sta_iface: ${sta_iface:-"-"}, sta_radio: ${sta_radio:-"-"}, sta_essid: ${sta_essid:-"-"}, sta_bssid: ${sta_bssid:-"-"}, ntp: ${ntp_done}, vpn: ${vpn:-"0"}/${vpn_done}, mail: ${trm_mail}/${mail_done}"
 843 }
 844
 845 # write to syslog
 846 #
 847 f_log() {
 848         local class="${1}" log_msg="${2}"
 849
 850         if [ -n "${log_msg}" ] && { [ "${class}" != "debug" ] || [ "${trm_debug}" = "1" ]; }; then
 851                 if [ -x "${trm_logger}" ]; then
 852                         "${trm_logger}" -p "${class}" -t "trm-${trm_ver}[${$}]" "${log_msg}"
 853                 else
 854                         printf "%s %s %s\n" "${class}" "trm-${trm_ver}[${$}]" "${log_msg}"
 855                 fi
 856                 if [ "${class}" = "err" ]; then
 857                         trm_ifstatus="error"
 858                         f_jsnup
 859                         : >"${trm_pidfile}"
 860                         exit 1
 861                 fi
 862         fi
 863 }
 864
 865 # main function for connection handling
 866 #
 867 f_main() {
 868         local radio cnt retrycnt scan_dev scan_list scan_essid scan_bssid scan_open scan_quality
 869         local station_id section sta sta_essid sta_bssid sta_radio sta_mac config_essid config_bssid config_radio
 870
 871         f_check "initial" "false"
 872         f_log "debug" "f_main-1  ::: status: ${trm_ifstatus}, proactive: ${trm_proactive}"
 873         if [ "${trm_ifstatus}" != "true" ] || [ "${trm_proactive}" = "1" ]; then
 874                 config_load wireless
 875                 config_foreach f_setif wifi-iface "${trm_proactive}"
 876                 if [ "${trm_ifstatus}" = "true" ] && [ -n "${trm_activesta}" ] && [ "${trm_proactive}" = "1" ]; then
 877                         json_get_var station_id "station_id"
 878                         config_radio="${station_id%%/*}"
 879                         config_essid="${station_id%/*}"
 880                         config_essid="${config_essid#*/}"
 881                         config_bssid="${station_id##*/}"
 882                         config_bssid="${config_bssid//-/}"
 883                         f_check "dev" "true"
 884                         f_log "debug" "f_main-2  ::: config_radio: ${config_radio}, config_essid: \"${config_essid}\", config_bssid: ${config_bssid:-"-"}"
 885                 else
 886                         uci_commit "wireless"
 887                         f_check "dev" "false"
 888                 fi
 889                 f_log "debug" "f_main-3  ::: radio_list: ${trm_radiolist:-"-"}, sta_list: ${trm_stalist:-"-"}"
 890
 891                 # radio loop
 892                 #
 893                 for radio in ${trm_radiolist}; do
 894                         if ! printf "%s" "${trm_stalist}" | grep -q "\\-${radio}"; then
 895                                 if [ "${trm_autoadd}" = "0" ]; then
 896                                         f_log "info" "no enabled station on radio '${radio}'"
 897                                         continue
 898                                 fi
 899                         fi
 900                         scan_list=""
 901
 902                         # station loop
 903                         #
 904                         for sta in ${trm_stalist:-"${radio}"}; do
 905                                 if [ "${sta}" != "${radio}" ]; then
 906                                         section="${sta%%-*}"
 907                                         sta_radio="$(uci_get "wireless" "${section}" "device")"
 908                                         sta_essid="$(uci_get "wireless" "${section}" "ssid")"
 909                                         sta_bssid="$(uci_get "wireless" "${section}" "bssid")"
 910                                         sta_mac="$(f_mac "get" "${section}")"
 911                                         if [ -z "${sta_radio}" ] || [ -z "${sta_essid}" ]; then
 912                                                 f_log "info" "invalid wireless section '${section}'"
 913                                                 continue
 914                                         fi
 915                                         if [ -n "${trm_connection}" ] && [ "${radio}" = "${config_radio}" ] && [ "${sta_radio}" = "${config_radio}" ] &&
 916                                                 [ "${sta_essid}" = "${config_essid}" ] && [ "${sta_bssid}" = "${config_bssid}" ]; then
 917                                                 f_ctrack "refresh"
 918                                                 f_vpn "enable_keep"
 919                                                 f_log "debug" "f_main-4  ::: config_radio: ${config_radio}, config_essid: ${config_essid}, config_bssid: ${config_bssid:-"-"}"
 920                                                 return 0
 921                                         fi
 922                                         f_log "debug" "f_main-5  ::: sta_radio: ${sta_radio}, sta_essid: \"${sta_essid}\", sta_bssid: ${sta_bssid:-"-"}"
 923                                 fi
 924                                 if [ -z "${scan_list}" ]; then
 925                                         scan_dev="$(ubus -S call network.wireless status 2>/dev/null | jsonfilter -q -l1 -e "@.${radio}.interfaces[0].ifname")"
 926                                         scan_list="$("${trm_iwinfo}" "${scan_dev:-${radio}}" scan 2>/dev/null |
 927                                                 awk 'BEGIN{FS="[[:space:]]"}/Address:/{var1=$NF}/ESSID:/{var2="";for(i=12;i<=NF;i++)if(var2==""){var2=$i}else{var2=var2" "$i}}
 928                                                 /Quality:/{split($NF,var0,"/")}/Encryption:/{if($NF=="none"){var3="+"}else{var3="-"};
 929                                                 printf "%i %s %s %s\n",(var0[1]*100/var0[2]),var3,var1,var2}' | sort -rn | head -qn "${trm_maxscan}")"
 930                                         f_log "debug" "f_main-6  ::: radio: ${radio}, scan_device: ${scan_dev}, scan_max: ${trm_maxscan}"
 931                                         if [ -z "${scan_list}" ]; then
 932                                                 f_log "info" "no scan results on '${radio}'"
 933                                                 continue 2
 934                                         fi
 935                                 fi
 936
 937                                 # scan loop
 938                                 #
 939                                 while read -r scan_quality scan_open scan_bssid scan_essid; do
 940                                         if [ -n "${scan_quality}" ] && [ -n "${scan_open}" ] && [ -n "${scan_bssid}" ] && [ -n "${scan_essid}" ]; then
 941                                                 f_log "debug" "f_main-7  ::: radio(sta/scan): ${sta_radio}/${radio}, essid(sta/scan): \"${sta_essid}\"/${scan_essid}, bssid(sta/scan): ${sta_bssid}/${scan_bssid}, quality(min/scan): ${trm_minquality}/${scan_quality}, open: ${scan_open}"
 942                                                 if [ "${scan_quality}" -ge "${trm_minquality}" ]; then
 943                                                         if [ "${trm_autoadd}" = "1" ] && [ "${scan_open}" = "+" ] && [ "${scan_essid}" != "unknown" ]; then
 944                                                                 open_essid="${scan_essid%?}"
 945                                                                 open_essid="${open_essid:1}"
 946                                                                 result="$(f_addsta "${radio}" "${open_essid}")"
 947                                                                 if [ -n "${result}" ]; then
 948                                                                         section="${result%%-*}"
 949                                                                         sta_radio="$(uci_get "wireless" "${section}" "device")"
 950                                                                         sta_essid="$(uci_get "wireless" "${section}" "ssid")"
 951                                                                         sta_bssid=""
 952                                                                         sta_mac=""
 953                                                                 fi
 954                                                         fi
 955                                                         if { { [ "${scan_essid}" = "\"${sta_essid}\"" ] && { [ -z "${sta_bssid}" ] || [ "${scan_bssid}" = "${sta_bssid}" ]; }; } ||
 956                                                                 { [ "${scan_bssid}" = "${sta_bssid}" ] && [ "${scan_essid}" = "unknown" ]; }; } && [ "${radio}" = "${sta_radio}" ]; then
 957                                                                 if [ -n "${config_radio}" ]; then
 958                                                                         f_vpn "disable"
 959                                                                         uci_set "wireless" "${trm_activesta}" "disabled" "1"
 960                                                                         uci_commit "wireless"
 961                                                                         f_check "rev" "false"
 962                                                                         f_ctrack "end"
 963                                                                         f_log "info" "uplink connection terminated '${config_radio}/${config_essid}/${config_bssid:-"-"}'"
 964                                                                         unset config_radio config_essid config_bssid
 965                                                                 fi
 966
 967                                                                 # retry loop
 968                                                                 #
 969                                                                 retrycnt="1"
 970                                                                 f_getcfg "${sta_radio}" "${sta_essid}" "${sta_bssid}"
 971                                                                 while [ "${retrycnt}" -le "${trm_maxretry}" ]; do
 972                                                                         sta_mac="$(f_mac "set" "${section}")"
 973                                                                         uci_set "wireless" "${section}" "disabled" "0"
 974                                                                         f_check "sta" "false" "${sta_radio}" "${sta_essid}" "${sta_bssid}"
 975                                                                         if [ "${trm_ifstatus}" = "true" ]; then
 976                                                                                 rm -f "${trm_mailfile}"
 977                                                                                 uci_commit "wireless"
 978                                                                                 f_ctrack "start"
 979                                                                                 f_log "info" "connected to uplink '${sta_radio}/${sta_essid}/${sta_bssid:-"-"}' with mac '${sta_mac:-"-"}' (${retrycnt}/${trm_maxretry})"
 980                                                                                 f_vpn "enable"
 981                                                                                 return 0
 982                                                                         else
 983                                                                                 uci -q revert "wireless"
 984                                                                                 f_check "rev" "false"
 985                                                                                 if [ "${retrycnt}" = "${trm_maxretry}" ]; then
 986                                                                                         f_ctrack "disabled"
 987                                                                                         f_log "info" "uplink has been disabled '${sta_radio}/${sta_essid}/${sta_bssid:-"-"}' (${retrycnt}/${trm_maxretry})"
 988                                                                                         break 2
 989                                                                                 else
 990                                                                                         f_jsnup
 991                                                                                         f_log "info" "can't connect to uplink '${sta_radio}/${sta_essid}/${sta_bssid:-"-"}' (${retrycnt}/${trm_maxretry})"
 992                                                                                 fi
 993                                                                         fi
 994                                                                         retrycnt="$((retrycnt + 1))"
 995                                                                         sleep "$((trm_maxwait / 6))"
 996                                                                 done
 997                                                         fi
 998                                                 fi
 999                                         fi
1000                                 done <<-EOV
1001                                         ${scan_list}
1002                                 EOV
1003                         done
1004                 done
1005         fi
1006 }
1007
1008 # source required system libraries
1009 #
1010 if [ -r "/lib/functions.sh" ] && [ -r "/lib/functions/network.sh" ] && [ -r "/usr/share/libubox/jshn.sh" ]; then
1011         . "/lib/functions.sh"
1012         . "/lib/functions/network.sh"
1013         . "/usr/share/libubox/jshn.sh"
1014 else
1015         f_log "err" "system libraries not found"
1016 fi
1017
1018 # force ntp restart/sync
1019 #
1020 if [ -f "/etc/init.d/sysntpd" ] && [ ! -s "${trm_ntpfile}" ]; then
1021         /etc/init.d/sysntpd restart >/dev/null 2>&1
1022         f_log "debug" "ntp time sync requested"
1023 fi
1024
1025 # control travelmate actions
1026 #
1027 while true; do
1028         if [ "${trm_action}" = "stop" ]; then
1029                 if [ -s "${trm_pidfile}" ]; then
1030                         f_log "info" "travelmate instance stopped ::: action: ${trm_action}, pid: $(cat ${trm_pidfile} 2>/dev/null)"
1031                         : >"${trm_rtfile}"
1032                         : >"${trm_pidfile}"
1033                 fi
1034                 break
1035         elif [ -n "${trm_action}" ]; then
1036                 f_log "info" "travelmate instance started ::: action: ${trm_action}, pid: ${$}"
1037                 f_env
1038                 f_main
1039                 unset trm_action
1040         fi
1041         while true; do
1042                 sleep "${trm_timeout}" 0
1043                 rc="${?}"
1044                 if [ "${rc}" != "0" ]; then
1045                         if [ -z "$(f_getgw)" ]; then
1046                                 rc="0"
1047                         fi
1048                 fi
1049                 if [ "${rc}" = "0" ]; then
1050                         break
1051                 fi
1052         done
1053         json_cleanup
1054         f_env
1055         f_main
1056 done