package/base-files/files/sbin/wifi

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3
   4 . /lib/functions.sh
   5
   6 usage() {
   7         cat <<EOF
   8 Usage: $0 [down|detect]
   9 enables (default), disables or detects a wifi configuration.
  10 EOF
  11         exit 1
  12 }
  13
  14 find_net_config() {(
  15         local vif="$1"
  16         local cfg
  17         local ifname
  18
  19         config_get cfg "$vif" network
  20
  21         [ -z "$cfg" ] && {
  22                 include /lib/network
  23                 scan_interfaces
  24
  25                 config_get ifname "$vif" ifname
  26
  27                 cfg="$(find_config "$ifname")"
  28         }
  29         [ -z "$cfg" ] && return 0
  30         echo "$cfg"
  31 )}
  32
  33
  34 bridge_interface() {(
  35         local cfg="$1"
  36         [ -z "$cfg" ] && return 0
  37
  38         include /lib/network
  39         scan_interfaces
  40
  41         for cfg in $cfg; do
  42                 config_get iftype "$cfg" type
  43                 [ "$iftype" = bridge ] && config_get "$cfg" ifname
  44                 prepare_interface_bridge "$cfg"
  45                 return $?
  46         done
  47 )}
  48
  49 prepare_key_wep() {
  50         local key="$1"
  51         local hex=1
  52
  53         echo -n "$key" | grep -qE "[^a-fA-F0-9]" && hex=0
  54         [ "${#key}" -eq 10 -a $hex -eq 1 ] || \
  55         [ "${#key}" -eq 26 -a $hex -eq 1 ] || {
  56                 [ "${key:0:2}" = "s:" ] && key="${key#s:}"
  57                 key="$(echo -n "$key" | hexdump -ve '1/1 "%02x" ""')"
  58         }
  59         echo "$key"
  60 }
  61
  62 wifi_fixup_hwmode() {
  63         local device="$1"
  64         local default="$2"
  65         local hwmode hwmode_11n
  66
  67         config_get channel "$device" channel
  68         config_get hwmode "$device" hwmode
  69         case "$hwmode" in
  70                 11bg) hwmode=bg;;
  71                 11a) hwmode=a;;
  72                 11b) hwmode=b;;
  73                 11g) hwmode=g;;
  74                 11n*)
  75                         hwmode_11n="${hwmode##11n}"
  76                         case "$hwmode_11n" in
  77                                 a|g) ;;
  78                                 default) hwmode_11n="$default"
  79                         esac
  80                         config_set "$device" hwmode_11n "$hwmode_11n"
  81                 ;;
  82                 *)
  83                         hwmode=
  84                         if [ "${channel:-0}" -gt 0 ]; then
  85                                 if [ "${channel:-0}" -gt 14 ]; then
  86                                         hwmode=a
  87                                 else
  88                                         hwmode=g
  89                                 fi
  90                         else
  91                                 hwmode="$default"
  92                         fi
  93                 ;;
  94         esac
  95         config_set "$device" hwmode "$hwmode"
  96 }
  97
  98 wifi_updown() {
  99         [ enable = "$1" ] && {
 100                 wifi_updown disable "$2"
 101                 scan_wifi
 102         }
 103         for device in ${2:-$DEVICES}; do (
 104                 config_get disabled "$device" disabled
 105                 [ 1 == "$disabled" ] && {
 106                         echo "'$device' is disabled"
 107                         set disable
 108                 }
 109                 config_get iftype "$device" type
 110                 if eval "type ${1}_$iftype" 2>/dev/null >/dev/null; then
 111                         eval "scan_$iftype '$device'"
 112                         eval "${1}_$iftype '$device'" || echo "$device($iftype): ${1} failed"
 113                 else
 114                         echo "$device($iftype): Interface type not supported"
 115                 fi
 116         ); done
 117 }
 118
 119 wifi_detect() {
 120         for driver in ${2:-$DRIVERS}; do (
 121                 if eval "type detect_$driver" 2>/dev/null >/dev/null; then
 122                         eval "detect_$driver" || echo "$driver: Detect failed" >&2
 123                 else
 124                         echo "$driver: Hardware detection not supported" >&2
 125                 fi
 126         ); done
 127 }
 128
 129 start_net() {(
 130         local iface="$1"
 131         local config="$2"
 132         local vifmac="$3"
 133
 134         [ -f "/var/run/$iface.pid" ] && kill "$(cat /var/run/${iface}.pid)" 2>/dev/null
 135         [ -z "$config" ] || {
 136                 include /lib/network
 137                 scan_interfaces
 138                 for config in $config; do
 139                         setup_interface "$iface" "$config" "" "$vifmac"
 140                 done
 141         }
 142 )}
 143
 144 set_wifi_up() {
 145         local cfg="$1"
 146         local ifname="$2"
 147         uci_set_state wireless "$cfg" up 1
 148         uci_set_state wireless "$cfg" ifname "$ifname"
 149 }
 150
 151 set_wifi_down() {
 152         local cfg="$1"
 153         local vifs vif vifstr
 154
 155         [ -f "/var/run/wifi-${cfg}.pid" ] &&
 156                 kill "$(cat "/var/run/wifi-${cfg}.pid")" 2>/dev/null
 157         uci_revert_state wireless "$cfg"
 158         config_get vifs "$cfg" vifs
 159         for vif in $vifs; do
 160                 uci_revert_state wireless "$vif"
 161         done
 162 }
 163
 164 scan_wifi() {
 165         local cfgfile="$1"
 166         DEVICES=
 167         config_cb() {
 168                 local type="$1"
 169                 local section="$2"
 170
 171                 # section start
 172                 case "$type" in
 173                         wifi-device)
 174                                 append DEVICES "$section"
 175                                 config_set "$section" vifs ""
 176                                 config_set "$section" ht_capab ""
 177                         ;;
 178                 esac
 179
 180                 # section end
 181                 config_get TYPE "$CONFIG_SECTION" TYPE
 182                 case "$TYPE" in
 183                         wifi-iface)
 184                                 config_get device "$CONFIG_SECTION" device
 185                                 config_get vifs "$device" vifs
 186                                 append vifs "$CONFIG_SECTION"
 187                                 config_set "$device" vifs "$vifs"
 188                         ;;
 189                 esac
 190         }
 191         config_load "${cfgfile:-wireless}"
 192 }
 193
 194 DEVICES=
 195 DRIVERS=
 196 include /lib/wifi
 197 scan_wifi
 198
 199 case "$1" in
 200         down) wifi_updown "disable" "$2";;
 201         detect) wifi_detect "$2";;
 202         --help|help) usage;;
 203         *) wifi_updown "enable" "$2";;
 204 esac