package/base-files/files/sbin/wifi

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