package/base-files/files/sbin/wifi

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3
   4 . /lib/functions.sh
   5 . /usr/share/libubox/jshn.sh
   6
   7 usage() {
   8         cat <<EOF
   9 Usage: $0 [config|up|down|reconf|reload|status]
  10 enables (default), disables or configures devices not yet configured.
  11 EOF
  12         exit 1
  13 }
  14
  15 ubus_wifi_cmd() {
  16         local cmd="$1"
  17         local dev="$2"
  18
  19         json_init
  20         [ -n "$2" ] && json_add_string device "$2"
  21         ubus call network.wireless "$1" "$(json_dump)"
  22 }
  23
  24 find_net_config() {(
  25         local vif="$1"
  26         local cfg
  27         local ifname
  28
  29         config_get cfg "$vif" network
  30
  31         [ -z "$cfg" ] && {
  32                 include /lib/network
  33                 scan_interfaces
  34
  35                 config_get ifname "$vif" ifname
  36
  37                 cfg="$(find_config "$ifname")"
  38         }
  39         [ -z "$cfg" ] && return 0
  40         echo "$cfg"
  41 )}
  42
  43
  44 bridge_interface() {(
  45         local cfg="$1"
  46         [ -z "$cfg" ] && return 0
  47
  48         include /lib/network
  49         scan_interfaces
  50
  51         for cfg in $cfg; do
  52                 config_get iftype "$cfg" type
  53                 [ "$iftype" = bridge ] && config_get "$cfg" ifname
  54                 prepare_interface_bridge "$cfg"
  55                 return $?
  56         done
  57 )}
  58
  59 prepare_key_wep() {
  60         local key="$1"
  61         local hex=1
  62
  63         echo -n "$key" | grep -qE "[^a-fA-F0-9]" && hex=0
  64         [ "${#key}" -eq 10 -a $hex -eq 1 ] || \
  65         [ "${#key}" -eq 26 -a $hex -eq 1 ] || {
  66                 [ "${key:0:2}" = "s:" ] && key="${key#s:}"
  67                 key="$(echo -n "$key" | hexdump -ve '1/1 "%02x" ""')"
  68         }
  69         echo "$key"
  70 }
  71
  72 wifi_fixup_hwmode() {
  73         local device="$1"
  74         local default="$2"
  75         local hwmode hwmode_11n
  76
  77         config_get channel "$device" channel
  78         config_get hwmode "$device" hwmode
  79         case "$hwmode" in
  80                 11bg) hwmode=bg;;
  81                 11a) hwmode=a;;
  82                 11ad) hwmode=ad;;
  83                 11b) hwmode=b;;
  84                 11g) hwmode=g;;
  85                 11n*)
  86                         hwmode_11n="${hwmode##11n}"
  87                         case "$hwmode_11n" in
  88                                 a|g) ;;
  89                                 default) hwmode_11n="$default"
  90                         esac
  91                         config_set "$device" hwmode_11n "$hwmode_11n"
  92                 ;;
  93                 *)
  94                         hwmode=
  95                         if [ "${channel:-0}" -gt 0 ]; then
  96                                 if [ "${channel:-0}" -gt 14 ]; then
  97                                         hwmode=a
  98                                 else
  99                                         hwmode=g
 100                                 fi
 101                         else
 102                                 hwmode="$default"
 103                         fi
 104                 ;;
 105         esac
 106         config_set "$device" hwmode "$hwmode"
 107 }
 108
 109 _wifi_updown() {
 110         for device in ${2:-$DEVICES}; do (
 111                 config_get disabled "$device" disabled
 112                 [ "$disabled" = "1" ] && {
 113                         echo "'$device' is disabled"
 114                         set disable
 115                 }
 116                 config_get iftype "$device" type
 117                 if eval "type ${1}_$iftype" 2>/dev/null >/dev/null; then
 118                         eval "scan_$iftype '$device'"
 119                         eval "${1}_$iftype '$device'" || echo "$device($iftype): ${1} failed"
 120                 elif [ ! -f /lib/netifd/wireless/$iftype.sh ]; then
 121                         echo "$device($iftype): Interface type not supported"
 122                 fi
 123         ); done
 124 }
 125
 126 wifi_updown() {
 127         cmd=down
 128         [ enable = "$1" ] && {
 129                 _wifi_updown disable "$2"
 130                 ubus_wifi_cmd "$cmd" "$2"
 131                 scan_wifi
 132                 cmd=up
 133                 ubus call network reload
 134         }
 135         [ reconf = "$1" ] && {
 136                 scan_wifi
 137                 cmd=reconf
 138                 ubus call network reload
 139         }
 140         ubus_wifi_cmd "$cmd" "$2"
 141         _wifi_updown "$@"
 142 }
 143
 144 wifi_reload_legacy() {
 145         _wifi_updown "disable" "$1"
 146         scan_wifi
 147         _wifi_updown "enable" "$1"
 148 }
 149
 150 wifi_reload() {
 151         ubus call network reload
 152         wifi_reload_legacy
 153 }
 154
 155 wifi_detect_notice() {
 156         >&2 echo "WARNING: Wifi detect is deprecated. Use wifi config instead"
 157         >&2 echo "For more information, see commit 5f8f8a366136a07df661e31decce2458357c167a"
 158         exit 1
 159 }
 160
 161 wifi_config() {
 162         [ ! -f /etc/config/wireless ] && touch /etc/config/wireless
 163
 164         for driver in $DRIVERS; do (
 165                 if eval "type detect_$driver" 2>/dev/null >/dev/null; then
 166                         eval "detect_$driver" || echo "$driver: Detect failed" >&2
 167                 else
 168                         echo "$driver: Hardware detection not supported" >&2
 169                 fi
 170         ); done
 171 }
 172
 173 start_net() {(
 174         local iface="$1"
 175         local config="$2"
 176         local vifmac="$3"
 177
 178         [ -f "/var/run/$iface.pid" ] && kill "$(cat /var/run/${iface}.pid)" 2>/dev/null
 179         [ -z "$config" ] || {
 180                 include /lib/network
 181                 scan_interfaces
 182                 for config in $config; do
 183                         setup_interface "$iface" "$config" "" "$vifmac"
 184                 done
 185         }
 186 )}
 187
 188 set_wifi_up() {
 189         local cfg="$1"
 190         local ifname="$2"
 191         uci_set_state wireless "$cfg" up 1
 192         uci_set_state wireless "$cfg" ifname "$ifname"
 193 }
 194
 195 set_wifi_down() {
 196         local cfg="$1"
 197         local vifs vif vifstr
 198
 199         [ -f "/var/run/wifi-${cfg}.pid" ] &&
 200                 kill "$(cat "/var/run/wifi-${cfg}.pid")" 2>/dev/null
 201         uci_revert_state wireless "$cfg"
 202         config_get vifs "$cfg" vifs
 203         for vif in $vifs; do
 204                 uci_revert_state wireless "$vif"
 205         done
 206 }
 207
 208 scan_wifi() {
 209         local cfgfile="$1"
 210         DEVICES=
 211         config_cb() {
 212                 local type="$1"
 213                 local section="$2"
 214
 215                 # section start
 216                 case "$type" in
 217                         wifi-device)
 218                                 append DEVICES "$section"
 219                                 config_set "$section" vifs ""
 220                                 config_set "$section" ht_capab ""
 221                         ;;
 222                 esac
 223
 224                 # section end
 225                 config_get TYPE "$CONFIG_SECTION" TYPE
 226                 case "$TYPE" in
 227                         wifi-iface)
 228                                 config_get device "$CONFIG_SECTION" device
 229                                 config_get vifs "$device" vifs
 230                                 append vifs "$CONFIG_SECTION"
 231                                 config_set "$device" vifs "$vifs"
 232                         ;;
 233                 esac
 234         }
 235         config_load "${cfgfile:-wireless}"
 236 }
 237
 238 DEVICES=
 239 DRIVERS=
 240 include /lib/wifi
 241 scan_wifi
 242
 243 case "$1" in
 244         down) wifi_updown "disable" "$2";;
 245         detect) wifi_detect_notice ;;
 246         config) wifi_config ;;
 247         status) ubus_wifi_cmd "status" "$2";;
 248         reload) wifi_reload "$2";;
 249         reload_legacy) wifi_reload_legacy "$2";;
 250         --help|help) usage;;
 251         reconf) wifi_updown "reconf" "$2";;
 252         ''|up) wifi_updown "enable" "$2";;
 253         *) usage; exit 1;;
 254 esac