package/base-files/files/sbin/wifi

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