net/travelmate/files/travelmate.init

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (c) 2016-2021 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=2034,2086,2154,3043,3060
   7
   8 START=25
   9 USE_PROCD=1
  10
  11 extra_command "scan" "<radio> Scan for available nearby uplinks"
  12 extra_command "setup" "[<iface>] [<zone>] [<metric>] Setup the travelmate uplink interface, by default 'trm_wwan' with firewall zone 'wan' and metric '100'"
  13
  14 trm_init="/etc/init.d/travelmate"
  15 trm_script="/usr/bin/travelmate.sh"
  16 trm_pidfile="/var/run/travelmate.pid"
  17
  18 boot()
  19 {
  20         if [ -s "${trm_pidfile}" ]; then
  21                 : >"${trm_pidfile}"
  22         fi
  23         rc_procd start_service
  24 }
  25
  26 start_service()
  27 {
  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 {
  44         local ppid pid timeout
  45
  46         timeout="$(uci_get travelmate global trm_timeout)"
  47
  48         if [ -s "${trm_pidfile}" ]; then
  49                 ppid="$(cat "${trm_pidfile}" 2>/dev/null)"
  50                 if [ -n "${ppid}" ]; then
  51                         pid="$(pgrep -xnf "sleep ${timeout:-60} 0" -P ${ppid} 2>/dev/null)"
  52                         if [ -n "${pid}" ]; then
  53                                 kill -INT ${pid} 2>/dev/null
  54                         fi
  55                 fi
  56         fi
  57 }
  58
  59 stop_service()
  60 {
  61         rc_procd "${trm_script}" stop
  62 }
  63
  64 status_service()
  65 {
  66         local key keylist value rtfile
  67
  68         rtfile="$(uci_get travelmate global trm_rtfile "/tmp/trm_runtime.json")"
  69         json_load_file "${rtfile}" >/dev/null 2>&1
  70         if json_select data >/dev/null 2>&1; then
  71                 printf "%s\n" "::: travelmate runtime information"
  72                 json_get_keys keylist
  73                 for key in ${keylist}; do
  74                         json_get_var value "${key}"
  75                         printf "  + %-18s : %s\n" "${key}" "${value}"
  76                 done
  77         else
  78                 printf "%s\n" "::: no travelmate runtime information available"
  79         fi
  80 }
  81
  82 scan()
  83 {
  84         local result scan_dev radio="${1:-"radio0"}"
  85
  86         scan_dev="$(ubus -S call network.wireless status 2>/dev/null | jsonfilter -q -l1 -e "@.${radio}.interfaces[0].ifname")"
  87         result="$(iwinfo "${scan_dev:-${radio}}" scan 2>/dev/null |
  88                 awk 'BEGIN{FS="[[:space:]]"}/Address:/{var1=$NF}/ESSID:/{var2="";
  89                 for(i=12;i<=NF;i++)if(var2==""){var2=$i}else{var2=var2" "$i}}/Channel:/{var3=$NF}/Quality:/{split($NF,var0,"/")}/Encryption:/{var4="";
  90                 for(j=12;j<=NF;j++)if(var4==""){var4=$j}else{var4=var4" "$j};printf "    %-11i%-10s%-35s%-20s%s\n",(var0[1]*100/var0[2]),var3,var2,var1,var4}' |
  91                 sort -rn)"
  92         printf '%s\n' "::: Available nearby uplinks on '${scan_dev:-${radio}}'"
  93         printf '%s\n' ":::"
  94         if [ -n "${result}" ]; then
  95                 printf '%-15s%-10s%-35s%-20s%s\n' "    Strength" "Channel" "ESSID" "BSSID" "Encryption"
  96                 printf '%s\n' "    --------------------------------------------------------------------------------------"
  97                 printf '%s\n' "${result}"
  98         else
  99                 printf '%s\n' "::: No scan results"
 100         fi
 101 }
 102
 103 setup()
 104 {
 105         local iface cnt=0 input="${1:-"trm_wwan"}" zone="${2:-"wan"}" metric="${3:-"100"}"
 106
 107         iface="$(uci_get travelmate global trm_iface)"
 108         input="${input//[+*~%&\$@\"\' ]/}"
 109         zone="${zone//[+*~%&\$@\"\' ]/}"
 110         metric="${metric//[^0-9]/}"
 111
 112         if [ -n "${iface}" ] && [ "${iface}" = "${input}" ]; then
 113                 printf "%s\n" "The uplink interface '${input}' has been already configured"
 114         elif [ -n "${input}" ]; then
 115                 if [ -n "${iface}" ]; then
 116                         uci -q batch <<-EOC
 117                                 del network."${iface}"
 118                                 del network."${iface}6"
 119                         EOC
 120                 fi
 121                 uci -q batch <<-EOC
 122                         set travelmate.global.trm_enabled="1"
 123                         set travelmate.global.trm_iface="${input}"
 124                         set network."${input}"="interface"
 125                         set network."${input}".proto="dhcp"
 126                         set network."${input}".metric="${metric}"
 127                         set network."${input}6"=interface
 128                         set network."${input}6".device="@${input}"
 129                         set network."${input}6".proto="dhcpv6"
 130                         commit travelmate
 131                         commit network
 132                 EOC
 133
 134                 while [ -n "$(uci -q get firewall.@zone["${cnt}"].name)" ]; do
 135                         if [ "$(uci -q get firewall.@zone["${cnt}"].name)" = "${zone}" ]; then
 136                                 if [ -n "${iface}" ]; then
 137                                         uci -q batch <<-EOC
 138                                                 del_list firewall.@zone["${cnt}"].network="${iface}"
 139                                                 del_list firewall.@zone["${cnt}"].network="${iface}6"
 140                                         EOC
 141                                 fi
 142                                 uci -q batch <<-EOC
 143                                         add_list firewall.@zone["${cnt}"].network="${input}"
 144                                         add_list firewall.@zone["${cnt}"].network="${input}6"
 145                                         commit firewall
 146                                 EOC
 147                                 break
 148                         fi
 149                         cnt=$((cnt + 1))
 150                 done
 151
 152                 if [ -n "${iface}" ]; then
 153                         cnt=0
 154                         while [ -n "$(uci -q get wireless.@wifi-iface["${cnt}"].network)" ]; do
 155                                 if [ "$(uci -q get wireless.@wifi-iface["${cnt}"].network)" = "${iface}" ]; then
 156                                         uci -q set wireless.@wifi-iface["${cnt}"].network="${input}"
 157                                 fi
 158                                 cnt=$((cnt + 1))
 159                         done
 160                         uci -q commit wireless
 161                 fi
 162                 /etc/init.d/network reload >/dev/null 2>&1
 163                 /etc/init.d/firewall reload >/dev/null 2>&1
 164                 "${trm_init}" restart
 165         fi
 166 }
 167
 168 service_triggers()
 169 {
 170         local iface delay
 171
 172         iface="$(uci_get travelmate global trm_iface)"
 173         delay="$(uci_get travelmate global trm_triggerdelay "2")"
 174         PROCD_RELOAD_DELAY=$((delay * 1000))
 175
 176         if [ -n "${iface}" ]; then
 177                 procd_add_interface_trigger "interface.*.down" "${iface}" "${trm_init}" reload
 178         fi
 179         procd_add_raw_trigger "interface.*.up" "${PROCD_RELOAD_DELAY}" "${trm_init}" start
 180         procd_add_config_trigger "config.change" "travelmate" "${trm_init}" restart
 181 }