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|ad) ;;
  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 name="$2"
 112         local value="$3"
 113
 114         json_init
 115         json_add_int "command" "$command"
 116         json_add_string "device" "$__netifd_device"
 117         [ -n "$name" -a -n "$value" ] && json_add_string "$name" "$value"
 118         json_add_object "data"
 119 }
 120
 121 _wdev_notify() {
 122         local options="$1"
 123
 124         json_close_object
 125         ubus $options call network.wireless notify "$(json_dump)"
 126 }
 127
 128 _wdev_add_variables() {
 129         while [ -n "$1" ]; do
 130                 local var="${1%%=*}"
 131                 local val="$1"
 132                 shift
 133                 [[ "$var" = "$val" ]] && continue
 134                 val="${val#*=}"
 135                 json_add_string "$var" "$val"
 136         done
 137 }
 138
 139 _wireless_add_vif() {
 140         local name="$1"; shift
 141         local ifname="$1"; shift
 142
 143         _wdev_notify_init $CMD_SET_DATA "interface" "$name"
 144         json_add_string "ifname" "$ifname"
 145         _wdev_add_variables "$@"
 146         _wdev_notify
 147 }
 148
 149 _wireless_add_vlan() {
 150         local name="$1"; shift
 151         local ifname="$1"; shift
 152
 153         _wdev_notify_init $CMD_SET_DATA "vlan" "$name"
 154         json_add_string "ifname" "$ifname"
 155         _wdev_add_variables "$@"
 156         _wdev_notify
 157 }
 158
 159 _wireless_set_up() {
 160         _wdev_notify_init $CMD_UP
 161         _wdev_notify
 162 }
 163
 164 _wireless_set_data() {
 165         _wdev_notify_init $CMD_SET_DATA
 166         _wdev_add_variables "$@"
 167         _wdev_notify
 168 }
 169
 170 _wireless_add_process() {
 171         _wdev_notify_init $CMD_PROCESS_ADD
 172         local exe="$2"
 173         [ -L "$exe" ] && exe="$(readlink -f "$exe")"
 174         json_add_int pid "$1"
 175         json_add_string exe "$exe"
 176         [ -n "$3" ] && json_add_boolean required 1
 177         exe2="$(readlink -f /proc/$1/exe)"
 178         [ "$exe" != "$exe2" ] && echo "WARNING (wireless_add_process): executable path $exe does not match process $1 path ($exe2)"
 179         _wdev_notify
 180 }
 181
 182 _wireless_process_kill_all() {
 183         _wdev_notify_init $CMD_PROCESS_KILL_ALL
 184         [ -n "$1" ] && json_add_int signal "$1"
 185         _wdev_notify
 186 }
 187
 188 _wireless_set_retry() {
 189         _wdev_notify_init $CMD_SET_RETRY
 190         json_add_int retry "$1"
 191         _wdev_notify
 192 }
 193
 194 _wdev_wrapper \
 195         wireless_add_vif \
 196         wireless_add_vlan \
 197         wireless_set_up \
 198         wireless_set_data \
 199         wireless_add_process \
 200         wireless_process_kill_all \
 201         wireless_set_retry \
 202
 203 wireless_vif_parse_encryption() {
 204         json_get_vars encryption
 205         set_default encryption none
 206
 207         auth_mode_open=1
 208         auth_mode_shared=0
 209         auth_type=none
 210         wpa_cipher=CCMP
 211         case "$encryption" in
 212                 *tkip+aes|*tkip+ccmp|*aes+tkip|*ccmp+tkip) wpa_cipher="CCMP TKIP";;
 213                 *aes|*ccmp) wpa_cipher="CCMP";;
 214                 *tkip) wpa_cipher="TKIP";;
 215                 *gcmp) wpa_cipher="GCMP";;
 216         esac
 217
 218         # 802.11n requires CCMP for WPA
 219         [ "$enable_ht:$wpa_cipher" = "1:TKIP" ] && wpa_cipher="CCMP TKIP"
 220
 221         # Examples:
 222         # psk-mixed/tkip    => WPA1+2 PSK, TKIP
 223         # wpa-psk2/tkip+aes => WPA2 PSK, CCMP+TKIP
 224         # wpa2/tkip+aes     => WPA2 RADIUS, CCMP+TKIP
 225
 226         case "$encryption" in
 227                 wpa2*|wpa3*|*psk2*|psk3*|sae*|owe*)
 228                         wpa=2
 229                 ;;
 230                 wpa*mixed*|*psk*mixed*)
 231                         wpa=3
 232                 ;;
 233                 wpa*|*psk*)
 234                         wpa=1
 235                 ;;
 236                 *)
 237                         wpa=0
 238                         wpa_cipher=
 239                 ;;
 240         esac
 241         wpa_pairwise="$wpa_cipher"
 242
 243         case "$encryption" in
 244                 owe*)
 245                         auth_type=owe
 246                 ;;
 247                 wpa3-mixed*)
 248                         auth_type=eap-eap192
 249                 ;;
 250                 wpa3*)
 251                         auth_type=eap192
 252                 ;;
 253                 psk3-mixed*|sae-mixed*)
 254                         auth_type=psk-sae
 255                 ;;
 256                 psk3*|sae*)
 257                         auth_type=sae
 258                 ;;
 259                 *psk*)
 260                         auth_type=psk
 261                 ;;
 262                 *wpa*|*8021x*)
 263                         auth_type=eap
 264                 ;;
 265                 *wep*)
 266                         auth_type=wep
 267                         case "$encryption" in
 268                                 *shared*)
 269                                         auth_mode_open=0
 270                                         auth_mode_shared=1
 271                                 ;;
 272                                 *mixed*)
 273                                         auth_mode_shared=1
 274                                 ;;
 275                         esac
 276                 ;;
 277         esac
 278 }
 279
 280 _wireless_set_brsnoop_isolation() {
 281         local multicast_to_unicast="$1"
 282         local isolate
 283
 284         json_get_var isolate isolate
 285
 286         [ ${isolate:-0} -gt 0 -o -z "$network_bridge" ] && return
 287         [ ${multicast_to_unicast:-1} -gt 0 ] && json_add_boolean isolate 1
 288 }
 289
 290 for_each_interface() {
 291         local _w_types="$1"; shift
 292         local _w_ifaces _w_iface
 293         local _w_type
 294         local _w_found
 295
 296         local multicast_to_unicast
 297
 298         json_get_keys _w_ifaces interfaces
 299         json_select interfaces
 300         for _w_iface in $_w_ifaces; do
 301                 json_select "$_w_iface"
 302                 if [ -n "$_w_types" ]; then
 303                         json_get_var network_bridge bridge
 304                         json_get_var multicast_to_unicast multicast_to_unicast
 305                         json_select config
 306                         _wireless_set_brsnoop_isolation "$multicast_to_unicast"
 307                         json_get_var _w_type mode
 308                         json_select ..
 309                         _w_types=" $_w_types "
 310                         [[ "${_w_types%$_w_type*}" = "$_w_types" ]] && {
 311                                 json_select ..
 312                                 continue
 313                         }
 314                 fi
 315                 "$@" "$_w_iface"
 316                 json_select ..
 317         done
 318         json_select ..
 319 }
 320
 321 for_each_vlan() {
 322         local _w_vlans _w_vlan
 323
 324         json_get_keys _w_vlans vlans
 325         json_select vlans
 326         for _w_vlan in $_w_vlans; do
 327                 json_select "$_w_vlan"
 328                 json_select config
 329                 "$@" "$_w_vlan"
 330                 json_select ..
 331                 json_select ..
 332         done
 333         json_select ..
 334 }
 335
 336 _wdev_common_device_config() {
 337         config_add_string channel hwmode htmode noscan
 338 }
 339
 340 _wdev_common_iface_config() {
 341         config_add_string mode ssid encryption 'key:wpakey'
 342 }
 343
 344 _wdev_common_vlan_config() {
 345         config_add_string name vid iface
 346 }
 347
 348 init_wireless_driver() {
 349         name="$1"; shift
 350         cmd="$1"; shift
 351
 352         case "$cmd" in
 353                 dump)
 354                         add_driver() {
 355                                 eval "drv_$1_cleanup"
 356
 357                                 json_init
 358                                 json_add_string name "$1"
 359
 360                                 json_add_array device
 361                                 _wdev_common_device_config
 362                                 eval "drv_$1_init_device_config"
 363                                 json_close_array
 364
 365                                 json_add_array iface
 366                                 _wdev_common_iface_config
 367                                 eval "drv_$1_init_iface_config"
 368                                 json_close_array
 369
 370                                 json_add_array vlan
 371                                 _wdev_common_vlan_config
 372                                 eval "drv_$1_init_vlan_config"
 373                                 json_close_array
 374
 375                                 json_dump
 376                         }
 377                 ;;
 378                 setup|teardown)
 379                         interface="$1"; shift
 380                         data="$1"; shift
 381                         export __netifd_device="$interface"
 382
 383                         add_driver() {
 384                                 [[ "$name" == "$1" ]] || return 0
 385                                 _wdev_handler "$1" "$cmd"
 386                         }
 387                 ;;
 388         esac
 389 }