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 [down|detect|reload|status]
  10 enables (default), disables or detects a wifi configuration.
  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                 11b) hwmode=b;;
  83                 11g) hwmode=g;;
  84                 11n*)
  85                         hwmode_11n="${hwmode##11n}"
  86                         case "$hwmode_11n" in
  87                                 a|g) ;;
  88                                 default) hwmode_11n="$default"
  89                         esac
  90                         config_set "$device" hwmode_11n "$hwmode_11n"
  91                 ;;
  92                 *)
  93                         hwmode=
  94                         if [ "${channel:-0}" -gt 0 ]; then
  95                                 if [ "${channel:-0}" -gt 14 ]; then
  96                                         hwmode=a
  97                                 else
  98                                         hwmode=g
  99                                 fi
 100                         else
 101                                 hwmode="$default"
 102                         fi
 103                 ;;
 104         esac
 105         config_set "$device" hwmode "$hwmode"
 106 }
 107
 108 _wifi_updown() {
 109         for device in ${2:-$DEVICES}; do (
 110                 config_get disabled "$device" disabled
 111                 [ "$disabled" = "1" ] && {
 112                         echo "'$device' is disabled"
 113                         set disable
 114                 }
 115                 config_get iftype "$device" type
 116                 if eval "type ${1}_$iftype" 2>/dev/null >/dev/null; then
 117                         eval "scan_$iftype '$device'"
 118                         eval "${1}_$iftype '$device'" || echo "$device($iftype): ${1} failed"
 119                 elif [ ! -f /lib/netifd/wireless/$iftype.sh ]; then
 120                         echo "$device($iftype): Interface type not supported"
 121                 fi
 122         ); done
 123 }
 124
 125 wifi_updown() {
 126         cmd=down
 127         [ enable = "$1" ] && {
 128                 _wifi_updown disable "$2"
 129                 ubus_wifi_cmd "$cmd" "$2"
 130                 scan_wifi
 131                 cmd=up
 132         }
 133         ubus_wifi_cmd "$cmd" "$2"
 134         _wifi_updown "$@"
 135 }
 136
 137 wifi_reload_legacy() {
 138         _wifi_updown "disable" "$1"
 139         scan_wifi
 140         _wifi_updown "enable" "$1"
 141 }
 142
 143 wifi_reload() {
 144         ubus call network reload
 145         wifi_reload_legacy
 146 }
 147
 148 wifi_detect() {
 149         for driver in ${2:-$DRIVERS}; do (
 150                 if eval "type detect_$driver" 2>/dev/null >/dev/null; then
 151                         eval "detect_$driver" || echo "$driver: Detect failed" >&2
 152                 else
 153                         echo "$driver: Hardware detection not supported" >&2
 154                 fi
 155         ); done
 156 }
 157
 158 start_net() {(
 159         local iface="$1"
 160         local config="$2"
 161         local vifmac="$3"
 162
 163         [ -f "/var/run/$iface.pid" ] && kill "$(cat /var/run/${iface}.pid)" 2>/dev/null
 164         [ -z "$config" ] || {
 165                 include /lib/network
 166                 scan_interfaces
 167                 for config in $config; do
 168                         setup_interface "$iface" "$config" "" "$vifmac"
 169                 done
 170         }
 171 )}
 172
 173 set_wifi_up() {
 174         local cfg="$1"
 175         local ifname="$2"
 176         uci_set_state wireless "$cfg" up 1
 177         uci_set_state wireless "$cfg" ifname "$ifname"
 178 }
 179
 180 set_wifi_down() {
 181         local cfg="$1"
 182         local vifs vif vifstr
 183
 184         [ -f "/var/run/wifi-${cfg}.pid" ] &&
 185                 kill "$(cat "/var/run/wifi-${cfg}.pid")" 2>/dev/null
 186         uci_revert_state wireless "$cfg"
 187         config_get vifs "$cfg" vifs
 188         for vif in $vifs; do
 189                 uci_revert_state wireless "$vif"
 190         done
 191 }
 192
 193 scan_wifi() {
 194         local cfgfile="$1"
 195         DEVICES=
 196         config_cb() {
 197                 local type="$1"
 198                 local section="$2"
 199
 200                 # section start
 201                 case "$type" in
 202                         wifi-device)
 203                                 append DEVICES "$section"
 204                                 config_set "$section" vifs ""
 205                                 config_set "$section" ht_capab ""
 206                         ;;
 207                 esac
 208
 209                 # section end
 210                 config_get TYPE "$CONFIG_SECTION" TYPE
 211                 case "$TYPE" in
 212                         wifi-iface)
 213                                 config_get device "$CONFIG_SECTION" device
 214                                 config_get vifs "$device" vifs
 215                                 append vifs "$CONFIG_SECTION"
 216                                 config_set "$device" vifs "$vifs"
 217                         ;;
 218                 esac
 219         }
 220         config_load "${cfgfile:-wireless}"
 221 }
 222
 223 DEVICES=
 224 DRIVERS=
 225 include /lib/wifi
 226 scan_wifi
 227
 228 case "$1" in
 229         down) wifi_updown "disable" "$2";;
 230         detect) wifi_detect "$2";;
 231         status) ubus_wifi_cmd "status" "$2";;
 232         reload) wifi_reload "$2";;
 233         reload_legacy) wifi_reload_legacy "$2";;
 234         --help|help) usage;;
 235         *) ubus call network reload; wifi_updown "enable" "$2";;
 236 esac