scripts/netifd-wireless.sh

   1 NETIFD_MAIN_DIR="${NETIFD_MAIN_DIR:-/lib/netifd}"
   2
   3 . /usr/share/libubox/jshn.sh
   4 . $NETIFD_MAIN_DIR/utils.sh
   5
   6 CMD_UP=0
   7 CMD_SET_DATA=1
   8 CMD_PROCESS_ADD=2
   9 CMD_PROCESS_KILL_ALL=3
  10 CMD_SET_RETRY=4
  11
  12 add_driver() {
  13         return
  14 }
  15
  16 wireless_setup_vif_failed() {
  17         local error="$1"
  18         echo "Interface $_w_iface setup failed: $error"
  19 }
  20
  21 wireless_setup_failed() {
  22         local error="$1"
  23
  24         echo "Device setup failed: $error"
  25         wireless_set_retry 0
  26 }
  27
  28 prepare_key_wep() {
  29         local key="$1"
  30         local hex=1
  31
  32         echo -n "$key" | grep -qE "[^a-fA-F0-9]" && hex=0
  33         [ "${#key}" -eq 10 -a $hex -eq 1 ] || \
  34         [ "${#key}" -eq 26 -a $hex -eq 1 ] || {
  35                 [ "${key:0:2}" = "s:" ] && key="${key#s:}"
  36                 key="$(echo -n "$key" | hexdump -ve '1/1 "%02x" ""')"
  37         }
  38         echo "$key"
  39 }
  40
  41 _wdev_prepare_channel() {
  42         json_get_vars channel hwmode
  43
  44         auto_channel=0
  45         enable_ht=0
  46         htmode=
  47         hwmode="${hwmode##11}"
  48         hwmode_n="${hwmode##n}"
  49
  50         case "$channel" in
  51                 ""|0|auto)
  52                         channel=0
  53                         auto_channel=1
  54                 ;;
  55                 [0-9]*) ;;
  56                 *)
  57                         wireless_setup_failed "INVALID_CHANNEL"
  58                 ;;
  59         esac
  60
  61         [[ "$hwmode_n" = "$hwmode" ]] || {
  62                 enable_ht=1
  63                 hwmode="$hwmode_n"
  64
  65                 json_get_vars htmode
  66                 case "$htmode" in
  67                         HT20|HT40+|HT40-);;
  68                         *) htmode= ;;
  69                 esac
  70         }
  71
  72         case "$hwmode" in
  73                 a|b|g) ;;
  74                 *)
  75                         if [ "$channel" -gt 14 ]; then
  76                                 hwmode=a
  77                         else
  78                                 hwmode=g
  79                         fi
  80                 ;;
  81         esac
  82 }
  83
  84 _wdev_handler() {
  85         json_load "$data"
  86
  87         json_select config
  88         _wdev_prepare_channel
  89         json_select ..
  90
  91         eval "drv_$1_$2 \"$interface\""
  92 }
  93
  94 _wdev_msg_call() {
  95         local old_cb
  96
  97         json_set_namespace wdev old_cb
  98         "$@"
  99         json_set_namespace $old_cb
 100 }
 101
 102 _wdev_wrapper() {
 103         while [ -n "$1" ]; do
 104                 eval "$1() { _wdev_msg_call _$1 \"\$@\"; }"
 105                 shift
 106         done
 107 }
 108
 109 _wdev_notify_init() {
 110         local command="$1"
 111         local interface="$2"
 112
 113         json_init
 114         json_add_int "command" "$command"
 115         json_add_string "device" "$__netifd_device"
 116         [ -n "$interface" ] && json_add_string "interface" "$interface"
 117         json_add_object "data"
 118 }
 119
 120 _wdev_notify() {
 121         local options="$1"
 122
 123         json_close_object
 124         ubus $options call network.wireless notify "$(json_dump)"
 125 }
 126
 127 _wdev_add_variables() {
 128         while [ -n "$1" ]; do
 129                 local var="${1%%=*}"
 130                 local val="$1"
 131                 shift
 132                 [[ "$var" = "$val" ]] && continue
 133                 val="${val#*=}"
 134                 json_add_string "$var" "$val"
 135         done
 136 }
 137
 138 _wireless_add_vif() {
 139         local name="$1"; shift
 140         local ifname="$1"; shift
 141
 142         _wdev_notify_init $CMD_SET_DATA "$name"
 143         json_add_string "ifname" "$ifname"
 144         _wdev_add_variables "$@"
 145         _wdev_notify
 146 }
 147
 148 _wireless_set_up() {
 149         _wdev_notify_init $CMD_UP
 150         _wdev_notify
 151 }
 152
 153 _wireless_set_data() {
 154         _wdev_notify_init $CMD_SET_DATA
 155         _wdev_add_variables "$@"
 156         _wdev_notify
 157 }
 158
 159 _wireless_add_process() {
 160         _wdev_notify_init $CMD_PROCESS_ADD
 161         local exe="$2"
 162         [ -L "$exe" ] && exe="$(readlink -f "$exe")"
 163         json_add_int pid "$1"
 164         json_add_string exe "$exe"
 165         [ -n "$3" ] && json_add_boolean required 1
 166         exe2="$(readlink -f /proc/$1/exe)"
 167         [ "$exe" != "$exe2" ] && echo "WARNING (wireless_add_process): executable path $exe does not match process $1 path ($exe2)"
 168         _wdev_notify
 169 }
 170
 171 _wireless_process_kill_all() {
 172         _wdev_notify_init $CMD_PROCESS_KILL_ALL
 173         [ -n "$1" ] && json_add_int signal "$1"
 174         _wdev_notify
 175 }
 176
 177 _wireless_set_retry() {
 178         _wdev_notify_init $CMD_SET_RETRY
 179         json_add_int retry "$1"
 180         _wdev_notify
 181 }
 182
 183 _wdev_wrapper \
 184         wireless_add_vif \
 185         wireless_set_up \
 186         wireless_set_data \
 187         wireless_add_process \
 188         wireless_process_kill_all \
 189         wireless_set_retry \
 190
 191 wireless_vif_parse_encryption() {
 192         json_get_vars encryption
 193         set_default encryption none
 194
 195         auth_mode_open=1
 196         auth_mode_shared=0
 197         auth_type=none
 198         wpa_cipher=CCMP
 199         case "$encryption" in
 200                 *tkip+aes|*tkip+ccmp|*aes+tkip|*ccmp+tkip) wpa_cipher="CCMP TKIP";;
 201                 *aes|*ccmp) wpa_cipher="CCMP";;
 202                 *tkip) wpa_cipher="TKIP";;
 203         esac
 204
 205         # 802.11n requires CCMP for WPA
 206         [ "$enable_ht:$wpa_cipher" = "1:TKIP" ] && wpa_cipher="CCMP TKIP"
 207
 208         # Examples:
 209         # psk-mixed/tkip    => WPA1+2 PSK, TKIP
 210         # wpa-psk2/tkip+aes => WPA2 PSK, CCMP+TKIP
 211         # wpa2/tkip+aes     => WPA2 RADIUS, CCMP+TKIP
 212
 213         case "$encryption" in
 214                 wpa2*|*psk2*)
 215                         wpa=2
 216                 ;;
 217                 *mixed*)
 218                         wpa=3
 219                 ;;
 220                 wpa*|*psk*)
 221                         wpa=1
 222                 ;;
 223                 *)
 224                         wpa=0
 225                         wpa_cipher=
 226                 ;;
 227         esac
 228         wpa_pairwise="$wpa_cipher"
 229
 230         case "$encryption" in
 231                 *psk*)
 232                         auth_type=psk
 233                 ;;
 234                 *wpa*|*8021x*)
 235                         auth_type=eap
 236                 ;;
 237                 *wep*)
 238                         auth_type=wep
 239                         case "$encryption" in
 240                                 *shared*)
 241                                         auth_mode_open=0
 242                                         auth_mode_shared=1
 243                                 ;;
 244                                 *mixed*)
 245                                         auth_mode_shared=1
 246                                 ;;
 247                         esac
 248                 ;;
 249         esac
 250 }
 251
 252 _wireless_set_brsnoop_isolation() {
 253         local multicast_to_unicast="$1"
 254         local isolate
 255
 256         json_get_var isolate isolate
 257
 258         [ ${isolate:-0} -gt 0 -o -z "$network_bridge" ] && return
 259         [ ${multicast_to_unicast:-1} -gt 0 ] && json_add_boolean isolate 1
 260 }
 261
 262 for_each_interface() {
 263         local _w_types="$1"; shift
 264         local _w_ifaces _w_iface
 265         local _w_type
 266         local _w_found
 267
 268         local multicast_to_unicast
 269
 270         json_get_keys _w_ifaces interfaces
 271         json_select interfaces
 272         for _w_iface in $_w_ifaces; do
 273                 json_select "$_w_iface"
 274                 if [ -n "$_w_types" ]; then
 275                         json_get_var network_bridge bridge
 276                         json_get_var multicast_to_unicast multicast_to_unicast
 277                         json_select config
 278                         _wireless_set_brsnoop_isolation "$multicast_to_unicast"
 279                         json_get_var _w_type mode
 280                         json_select ..
 281                         _w_types=" $_w_types "
 282                         [[ "${_w_types%$_w_type*}" = "$_w_types" ]] && {
 283                                 json_select ..
 284                                 continue
 285                         }
 286                 fi
 287                 "$@" "$_w_iface"
 288                 json_select ..
 289         done
 290         json_select ..
 291 }
 292
 293 _wdev_common_device_config() {
 294         config_add_string channel hwmode htmode
 295 }
 296
 297 _wdev_common_iface_config() {
 298         config_add_string mode ssid encryption 'key:wpakey'
 299 }
 300
 301 init_wireless_driver() {
 302         name="$1"; shift
 303         cmd="$1"; shift
 304
 305         case "$cmd" in
 306                 dump)
 307                         add_driver() {
 308                                 eval "drv_$1_cleanup"
 309
 310                                 json_init
 311                                 json_add_string name "$1"
 312
 313                                 json_add_array device
 314                                 _wdev_common_device_config
 315                                 eval "drv_$1_init_device_config"
 316                                 json_close_array
 317
 318                                 json_add_array iface
 319                                 _wdev_common_iface_config
 320                                 eval "drv_$1_init_iface_config"
 321                                 json_close_array
 322
 323                                 json_dump
 324                         }
 325                 ;;
 326                 setup|teardown)
 327                         interface="$1"; shift
 328                         data="$1"; shift
 329                         export __netifd_device="$interface"
 330
 331                         add_driver() {
 332                                 [[ "$name" == "$1" ]] || return 0
 333                                 _wdev_handler "$1" "$cmd"
 334                         }
 335                 ;;
 336         esac
 337 }