scripts/netifd-proto.sh

   1 NETIFD_MAIN_DIR="${NETIFD_MAIN_DIR:-/lib/netifd}"
   2 PROTO_DEFAULT_OPTIONS="defaultroute peerdns metric"
   3
   4 . /usr/share/libubox/jshn.sh
   5 . $NETIFD_MAIN_DIR/utils.sh
   6
   7 proto_config_add_int() {
   8         config_add_int "$@"
   9 }
  10
  11 proto_config_add_string() {
  12         config_add_string "$@"
  13 }
  14
  15 proto_config_add_boolean() {
  16         config_add_boolean "$@"
  17 }
  18
  19 proto_config_add_array() {
  20         config_add_array "$@"
  21 }
  22
  23 proto_config_add_defaults() {
  24         proto_config_add_boolean "defaultroute"
  25         proto_config_add_boolean "peerdns"
  26         proto_config_add_int "metric"
  27 }
  28
  29 proto_add_dynamic_defaults() {
  30         [ -n "$defaultroute" ] && json_add_boolean defaultroute "$defaultroute"
  31         [ -n "$peerdns" ] && json_add_boolean peerdns "$peerdns"
  32         [ -n "$metric" ] && json_add_int metric "$metric"
  33 }
  34
  35 _proto_do_teardown() {
  36         json_load "$data"
  37         eval "proto_$1_teardown \"$interface\" \"$ifname\""
  38 }
  39
  40 _proto_do_renew() {
  41         json_load "$data"
  42         eval "proto_$1_renew \"$interface\" \"$ifname\""
  43 }
  44
  45 _proto_do_setup() {
  46         json_load "$data"
  47         _EXPORT_VAR=0
  48         _EXPORT_VARS=
  49         eval "proto_$1_setup \"$interface\" \"$ifname\""
  50 }
  51
  52 proto_init_update() {
  53         local ifname="$1"
  54         local up="$2"
  55         local external="$3"
  56
  57         PROTO_KEEP=0
  58         PROTO_INIT=1
  59         PROTO_TUNNEL_OPEN=
  60         PROTO_IPADDR=
  61         PROTO_IP6ADDR=
  62         PROTO_ROUTE=
  63         PROTO_ROUTE6=
  64         PROTO_PREFIX6=
  65         PROTO_DNS=
  66         PROTO_DNS_SEARCH=
  67         json_init
  68         json_add_int action 0
  69         [ -n "$ifname" -a "*" != "$ifname" ] && json_add_string "ifname" "$ifname"
  70         json_add_boolean "link-up" "$up"
  71         [ -n "$3" ] && json_add_boolean "address-external" "$external"
  72 }
  73
  74 proto_set_keep() {
  75         PROTO_KEEP="$1"
  76 }
  77
  78 proto_close_nested() {
  79         [ -n "$PROTO_NESTED_OPEN" ] && json_close_object
  80         PROTO_NESTED_OPEN=
  81 }
  82
  83 proto_add_nested() {
  84         PROTO_NESTED_OPEN=1
  85         json_add_object "$1"
  86 }
  87
  88 proto_add_tunnel() {
  89         proto_add_nested "tunnel"
  90 }
  91
  92 proto_close_tunnel() {
  93         proto_close_nested
  94 }
  95
  96 proto_add_data() {
  97         proto_add_nested "data"
  98 }
  99
 100 proto_close_data() {
 101         proto_close_nested
 102 }
 103
 104 proto_add_dns_server() {
 105         local address="$1"
 106
 107         append PROTO_DNS "$address"
 108 }
 109
 110 proto_add_dns_search() {
 111         local address="$1"
 112
 113         append PROTO_DNS_SEARCH "$address"
 114 }
 115
 116 proto_add_ipv4_address() {
 117         local address="$1"
 118         local mask="$2"
 119         local broadcast="$3"
 120         local ptp="$4"
 121
 122         append PROTO_IPADDR "$address/$mask/$broadcast/$ptp"
 123 }
 124
 125 proto_add_ipv6_address() {
 126         local address="$1"
 127         local mask="$2"
 128         local preferred="$3"
 129         local valid="$4"
 130         local offlink="$5"
 131         local class="$6"
 132
 133         append PROTO_IP6ADDR "$address/$mask/$preferred/$valid/$offlink/$class"
 134 }
 135
 136 proto_add_ipv4_route() {
 137         local target="$1"
 138         local mask="$2"
 139         local gw="$3"
 140         local source="$4"
 141         local metric="$5"
 142
 143         append PROTO_ROUTE "$target/$mask/$gw/$metric///$source"
 144 }
 145
 146 proto_add_ipv6_route() {
 147         local target="$1"
 148         local mask="$2"
 149         local gw="$3"
 150         local metric="$4"
 151         local valid="$5"
 152         local source="$6"
 153         local table="$7"
 154
 155         append PROTO_ROUTE6 "$target/$mask/$gw/$metric/$valid/$table/$source"
 156 }
 157
 158 proto_add_ipv6_prefix() {
 159         local prefix="$1"
 160         local valid="$2"
 161         local preferred="$3"
 162
 163         if [ -z "$valid" ]; then
 164                 append PROTO_PREFIX6 "$prefix"
 165         else
 166                 [ -z "$preferred" ] && preferred="$valid"
 167                 append PROTO_PREFIX6 "$prefix,$valid,$preferred"
 168         fi
 169 }
 170
 171 _proto_push_ipv4_addr() {
 172         local str="$1"
 173         local address mask broadcast ptp
 174
 175         address="${str%%/*}"
 176         str="${str#*/}"
 177         mask="${str%%/*}"
 178         str="${str#*/}"
 179         broadcast="${str%%/*}"
 180         str="${str#*/}"
 181         ptp="$str"
 182
 183         json_add_object ""
 184         json_add_string ipaddr "$address"
 185         [ -n "$mask" ] && json_add_string mask "$mask"
 186         [ -n "$broadcast" ] && json_add_string broadcast "$broadcast"
 187         [ -n "$ptp" ] && json_add_string ptp "$ptp"
 188         json_close_object
 189 }
 190
 191 _proto_push_ipv6_addr() {
 192         local str="$1"
 193         local address mask preferred valid offlink
 194
 195         address="${str%%/*}"
 196         str="${str#*/}"
 197         mask="${str%%/*}"
 198         str="${str#*/}"
 199         preferred="${str%%/*}"
 200         str="${str#*/}"
 201         valid="${str%%/*}"
 202         str="${str#*/}"
 203         offlink="${str%%/*}"
 204         str="${str#*/}"
 205         class="${str%%/*}"
 206
 207         json_add_object ""
 208         json_add_string ipaddr "$address"
 209         [ -n "$mask" ] && json_add_string mask "$mask"
 210         [ -n "$preferred" ] && json_add_int preferred "$preferred"
 211         [ -n "$valid" ] && json_add_int valid "$valid"
 212         [ -n "$offlink" ] && json_add_boolean offlink "$offlink"
 213         [ -n "$class" ] && json_add_string class "$class"
 214         json_close_object
 215 }
 216
 217 _proto_push_string() {
 218         json_add_string "" "$1"
 219 }
 220
 221 _proto_push_route() {
 222         local str="$1";
 223         local target="${str%%/*}"
 224         str="${str#*/}"
 225         local mask="${str%%/*}"
 226         str="${str#*/}"
 227         local gw="${str%%/*}"
 228         str="${str#*/}"
 229         local metric="${str%%/*}"
 230         str="${str#*/}"
 231         local valid="${str%%/*}"
 232         str="${str#*/}"
 233         local table="${str%%/*}"
 234         str="${str#*/}"
 235         local source="${str}"
 236
 237         json_add_object ""
 238         json_add_string target "$target"
 239         json_add_string netmask "$mask"
 240         [ -n "$gw" ] && json_add_string gateway "$gw"
 241         [ -n "$metric" ] && json_add_int metric "$metric"
 242         [ -n "$valid" ] && json_add_int valid "$valid"
 243         [ -n "$source" ] && json_add_string source "$source"
 244         [ -n "$table" ] && json_add_string table "$table"
 245         json_close_object
 246 }
 247
 248 _proto_push_array() {
 249         local name="$1"
 250         local val="$2"
 251         local cb="$3"
 252
 253         [ -n "$val" ] || return 0
 254         json_add_array "$name"
 255         for item in $val; do
 256                 eval "$cb \"\$item\""
 257         done
 258         json_close_array
 259 }
 260
 261 _proto_notify() {
 262         local interface="$1"
 263         local options="$2"
 264         json_add_string "interface" "$interface"
 265         ubus $options call network.interface notify_proto "$(json_dump)"
 266 }
 267
 268 proto_send_update() {
 269         local interface="$1"
 270
 271         proto_close_nested
 272         json_add_boolean keep "$PROTO_KEEP"
 273         _proto_push_array "ipaddr" "$PROTO_IPADDR" _proto_push_ipv4_addr
 274         _proto_push_array "ip6addr" "$PROTO_IP6ADDR" _proto_push_ipv6_addr
 275         _proto_push_array "routes" "$PROTO_ROUTE" _proto_push_route
 276         _proto_push_array "routes6" "$PROTO_ROUTE6" _proto_push_route
 277         _proto_push_array "ip6prefix" "$PROTO_PREFIX6" _proto_push_string
 278         _proto_push_array "dns" "$PROTO_DNS" _proto_push_string
 279         _proto_push_array "dns_search" "$PROTO_DNS_SEARCH" _proto_push_string
 280         _proto_notify "$interface"
 281 }
 282
 283 proto_export() {
 284         local var="VAR${_EXPORT_VAR}"
 285         _EXPORT_VAR="$(($_EXPORT_VAR + 1))"
 286         export -- "$var=$1"
 287         append _EXPORT_VARS "$var"
 288 }
 289
 290 proto_run_command() {
 291         local interface="$1"; shift
 292
 293         json_init
 294         json_add_int action 1
 295         json_add_array command
 296         while [ $# -gt 0 ]; do
 297                 json_add_string "" "$1"
 298                 shift
 299         done
 300         json_close_array
 301         [ -n "$_EXPORT_VARS" ] && {
 302                 json_add_array env
 303                 for var in $_EXPORT_VARS; do
 304                         eval "json_add_string \"\" \"\${$var}\""
 305                 done
 306                 json_close_array
 307         }
 308         _proto_notify "$interface"
 309 }
 310
 311 proto_kill_command() {
 312         local interface="$1"; shift
 313
 314         json_init
 315         json_add_int action 2
 316         [ -n "$1" ] && json_add_int signal "$1"
 317         _proto_notify "$interface"
 318 }
 319
 320 proto_notify_error() {
 321         local interface="$1"; shift
 322
 323         json_init
 324         json_add_int action 3
 325         json_add_array error
 326         while [ $# -gt 0 ]; do
 327                 json_add_string "" "$1"
 328                 shift
 329         done
 330         json_close_array
 331         _proto_notify "$interface"
 332 }
 333
 334 proto_block_restart() {
 335         local interface="$1"; shift
 336
 337         json_init
 338         json_add_int action 4
 339         _proto_notify "$interface"
 340 }
 341
 342 proto_set_available() {
 343         local interface="$1"
 344         local state="$2"
 345         json_init
 346         json_add_int action 5
 347         json_add_boolean available "$state"
 348         _proto_notify "$interface"
 349 }
 350
 351 proto_add_host_dependency() {
 352         local interface="$1"
 353         local host="$2"
 354         local ifname="$3"
 355
 356         # execute in subshell to not taint callers env
 357         # see tickets #11046, #11545, #11570
 358         (
 359                 json_init
 360                 json_add_int action 6
 361                 json_add_string host "$host"
 362                 [ -n "$ifname" ] && json_add_string ifname "$ifname"
 363                 _proto_notify "$interface" -S
 364         )
 365 }
 366
 367 proto_setup_failed() {
 368         local interface="$1"
 369         json_init
 370         json_add_int action 7
 371         _proto_notify "$interface"
 372 }
 373
 374 init_proto() {
 375         proto="$1"; shift
 376         cmd="$1"; shift
 377
 378         case "$cmd" in
 379                 dump)
 380                         add_protocol() {
 381                                 no_device=0
 382                                 no_proto_task=0
 383                                 available=0
 384                                 renew_handler=0
 385                                 teardown_on_l3_link_down=0
 386
 387                                 add_default_handler "proto_$1_init_config"
 388
 389                                 json_init
 390                                 json_add_string "name" "$1"
 391                                 json_add_array "config"
 392                                 eval "proto_$1_init_config"
 393                                 json_close_array
 394                                 json_add_boolean no-device "$no_device"
 395                                 json_add_boolean no-proto-task "$no_proto_task"
 396                                 json_add_boolean available "$available"
 397                                 json_add_boolean renew-handler "$renew_handler"
 398                                 json_add_boolean lasterror "$lasterror"
 399                                 json_add_boolean teardown-on-l3-link-down "$teardown_on_l3_link_down"
 400                                 json_dump
 401                         }
 402                 ;;
 403                 setup|teardown|renew)
 404                         interface="$1"; shift
 405                         data="$1"; shift
 406                         ifname="$1"; shift
 407
 408                         add_protocol() {
 409                                 [[ "$proto" == "$1" ]] || return 0
 410
 411                                 case "$cmd" in
 412                                         setup) _proto_do_setup "$1";;
 413                                         teardown) _proto_do_teardown "$1" ;;
 414                                         renew) _proto_do_renew "$1" ;;
 415                                         *) return 1 ;;
 416                                 esac
 417                         }
 418                 ;;
 419         esac
 420 }