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