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