net/travelmate/files/travelmate.init

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (c) 2016-2024 Dirk Brenken (dev@brenken.org)
   3 # This is free software, licensed under the GNU General Public License v3.
   4
   5 # set (s)hellcheck exceptions
   6 # shellcheck disable=all
   7
   8 START=25
   9 USE_PROCD=1
  10
  11 extra_command "scan" "[<radio>|<ifname>] Scan for available nearby uplinks"
  12 extra_command "assoc" "[<radio>|<ifname>] Get MAC adresses of associated wlan stations"
  13 extra_command "setup" "[<iface>] [<zone>] [<metric>] Setup the travelmate uplink interface, by default 'trm_wwan' with firewall zone 'wan' and metric '100'"
  14
  15 trm_init="/etc/init.d/travelmate"
  16 trm_script="/usr/bin/travelmate.sh"
  17 trm_pidfile="/var/run/travelmate.pid"
  18 trm_scanfile="/var/run/travelmate.scan"
  19
  20 boot() {
  21         if [ -s "${trm_pidfile}" ]; then
  22                 : >"${trm_pidfile}"
  23         fi
  24         rc_procd start_service
  25 }
  26
  27 start_service() {
  28         if "${trm_init}" enabled; then
  29                 if [ "${action}" = "boot" ]; then
  30                         return 0
  31                 fi
  32                 procd_open_instance "travelmate"
  33                 procd_set_param command "${trm_script}" "${@}"
  34                 procd_set_param pidfile "${trm_pidfile}"
  35                 procd_set_param nice "$(uci_get travelmate global trm_nice "0")"
  36                 procd_set_param stdout 1
  37                 procd_set_param stderr 1
  38                 procd_close_instance
  39         fi
  40 }
  41
  42 reload_service() {
  43         local ppid pid timeout
  44
  45         timeout="$(uci_get travelmate global trm_timeout)"
  46
  47         if [ -s "${trm_pidfile}" ]; then
  48                 ppid="$(cat "${trm_pidfile}" 2>/dev/null)"
  49                 if [ -n "${ppid}" ]; then
  50                         pid="$(pgrep -xnf "sleep ${timeout:-60} 0" -P ${ppid} 2>/dev/null)"
  51                         if [ -n "${pid}" ]; then
  52                                 kill -INT ${pid} 2>/dev/null
  53                         fi
  54                 fi
  55         fi
  56 }
  57
  58 stop_service() {
  59         rc_procd "${trm_script}" stop
  60 }
  61
  62 status_service() {
  63         local key keylist value rtfile
  64
  65         rtfile="$(uci_get travelmate global trm_rtfile "/tmp/trm_runtime.json")"
  66         json_load_file "${rtfile}" >/dev/null 2>&1
  67         if json_select data >/dev/null 2>&1; then
  68                 printf "%s\n" "::: travelmate runtime information"
  69                 json_get_keys keylist
  70                 for key in ${keylist}; do
  71                         json_get_var value "${key}"
  72                         printf "  + %-18s : %s\n" "${key}" "${value}"
  73                 done
  74         else
  75                 printf "%s\n" "::: no travelmate runtime information available"
  76         fi
  77 }
  78
  79 scan() {
  80         local result radio="${1}"
  81
  82         : > "${trm_scanfile}"
  83         if [ -z "${radio}" ]; then
  84                 radio="$(ubus -S call network.wireless status 2>/dev/null | jsonfilter -q -l1 -e '@[@.up=true].interfaces[0].ifname')"
  85         fi
  86         result="$(iwinfo "${radio}" scan 2>/dev/null |
  87                 awk 'BEGIN{FS="[[:space:]]"}/Address:/{var1=$NF}/ESSID:/{var2="";
  88                 for(i=12;i<=NF;i++)if(var2==""){var2=$i}else{var2=var2" "$i}}/Channel:/{var3=$NF}/Quality:/{split($NF,var0,"/")}/Encryption:/{var4="";
  89                 for(j=12;j<=NF;j++)if(var4==""){var4=$j}else{var4=var4" "$j};printf "    %-11i%-10s%-35s%-20s%s\n",(var0[1]*100/var0[2]),var3,var2,var1,var4}' |
  90                 sort -rn)"
  91         printf "::: %s\n:::\n" "Available nearby uplinks on '${radio}'"
  92         if [ -n "${result}" ]; then
  93                 printf "%s\n" "${result}" > "${trm_scanfile}"
  94                 printf "%-15s%-10s%-35s%-20s%s\n" "    Strength" "Channel" "ESSID" "BSSID" "Encryption"
  95                 printf "%s\n" "    --------------------------------------------------------------------------------------"
  96                 printf "%s\n" "${result}"
  97         else
  98                 printf "%s\n" "::: Empty resultset"
  99         fi
 100 }
 101
 102 setup() {
 103         local iface cnt=0 input="${1:-"trm_wwan"}" zone="${2:-"wan"}" metric="${3:-"100"}"
 104
 105         iface="$(uci_get travelmate global trm_iface)"
 106         input="${input//[+*~%&\$@\"\' ]/}"
 107         zone="${zone//[+*~%&\$@\"\' ]/}"
 108         metric="${metric//[^0-9]/}"
 109
 110         if [ -n "${iface}" ] && [ "${iface}" = "${input}" ]; then
 111                 printf "%s\n" "The uplink interface '${input}' has been already configured"
 112         elif [ -n "${input}" ]; then
 113                 if [ -n "${iface}" ]; then
 114                         uci -q batch <<-EOC
 115                                 del network."${iface}"
 116                                 del network."${iface}6"
 117                         EOC
 118                 fi
 119                 uci -q batch <<-EOC
 120                         set travelmate.global.trm_enabled="1"
 121                         set travelmate.global.trm_iface="${input}"
 122                         set network."${input}"="interface"
 123                         set network."${input}".proto="dhcp"
 124                         set network."${input}".metric="${metric}"
 125                         set network."${input}6"=interface
 126                         set network."${input}6".device="@${input}"
 127                         set network."${input}6".proto="dhcpv6"
 128                         commit travelmate
 129                         commit network
 130                 EOC
 131
 132                 while [ -n "$(uci -q get firewall.@zone["${cnt}"].name)" ]; do
 133                         if [ "$(uci -q get firewall.@zone["${cnt}"].name)" = "${zone}" ]; then
 134                                 if [ -n "${iface}" ]; then
 135                                         uci -q batch <<-EOC
 136                                                 del_list firewall.@zone["${cnt}"].network="${iface}"
 137                                                 del_list firewall.@zone["${cnt}"].network="${iface}6"
 138                                         EOC
 139                                 fi
 140                                 uci -q batch <<-EOC
 141                                         add_list firewall.@zone["${cnt}"].network="${input}"
 142                                         add_list firewall.@zone["${cnt}"].network="${input}6"
 143                                         commit firewall
 144                                 EOC
 145                                 break
 146                         fi
 147                         cnt=$((cnt + 1))
 148                 done
 149
 150                 if [ -n "${iface}" ]; then
 151                         cnt=0
 152                         while [ -n "$(uci -q get wireless.@wifi-iface["${cnt}"].network)" ]; do
 153                                 if [ "$(uci -q get wireless.@wifi-iface["${cnt}"].network)" = "${iface}" ]; then
 154                                         uci -q set wireless.@wifi-iface["${cnt}"].network="${input}"
 155                                 fi
 156                                 cnt=$((cnt + 1))
 157                         done
 158                         uci -q commit wireless
 159                 fi
 160                 /etc/init.d/network reload >/dev/null 2>&1
 161                 /etc/init.d/firewall reload >/dev/null 2>&1
 162                 "${trm_init}" restart
 163         fi
 164 }
 165
 166 assoc() {
 167         local result radio="${1}"
 168
 169         if [ -z "${radio}" ]; then
 170                 radio="$(ubus -S call network.wireless status 2>/dev/null | jsonfilter -q -l1 -e '@[@.*.*.config.mode="ap"].interfaces[0].ifname')"
 171         fi
 172         result="$(iwinfo "${radio}" assoc 2>/dev/null | awk '/^[A-Z0-9:]+/{printf "    %s\n",$1}')"
 173         printf "%s\n" "::: Associated wlan stations on '${radio}'"
 174         printf "%s\n" ":::"
 175         if [ -n "${result}" ]; then
 176                 printf "%s\n" "    MAC addresses"
 177                 printf "%s\n" "    -----------------"
 178                 printf "%s\n" "${result}"
 179         else
 180                 printf "%s\n" "::: Empty resultset"
 181         fi
 182 }
 183
 184 service_triggers() {
 185         local iface delay
 186
 187         iface="$(uci_get travelmate global trm_iface)"
 188         delay="$(uci_get travelmate global trm_triggerdelay "2")"
 189         PROCD_RELOAD_DELAY=$((delay * 1000))
 190
 191         if [ -n "${iface}" ]; then
 192                 procd_add_interface_trigger "interface.*.down" "${iface}" "${trm_init}" reload
 193         fi
 194         procd_add_raw_trigger "interface.*.up" "${PROCD_RELOAD_DELAY}" "${trm_init}" start
 195         procd_add_config_trigger "config.change" "travelmate" "${trm_init}" restart
 196 }