net/mwan3/files/lib/mwan3/mwan3.sh

   1 #!/bin/sh
   2
   3 IP4="ip -4"
   4 IP6="ip -6"
   5 IPS="ipset"
   6 IPT4="iptables -t mangle -w"
   7 IPT6="ip6tables -t mangle -w"
   8 LOG="logger -t mwan3 -p"
   9 CONNTRACK_FILE="/proc/net/nf_conntrack"
  10
  11 mwan3_get_iface_id()
  12 {
  13         local _tmp _iface _iface_count
  14
  15         _iface="$2"
  16
  17         mwan3_get_id()
  18         {
  19                 let _iface_count++
  20                 [ "$1" == "$_iface" ] && _tmp=$_iface_count
  21         }
  22         config_foreach mwan3_get_id interface
  23         export "$1=$_tmp"
  24 }
  25
  26 mwan3_set_connected_iptables()
  27 {
  28         local connected_network_v4 connected_network_v6
  29
  30         $IPS -! create mwan3_connected_v4 hash:net
  31         $IPS create mwan3_connected_v4_temp hash:net
  32
  33         for connected_network_v4 in $($IP4 route | awk '{print $1}' | egrep '[0-9]{1,3}(\.[0-9]{1,3}){3}'); do
  34                 $IPS -! add mwan3_connected_v4_temp $connected_network_v4
  35         done
  36
  37         for connected_network_v4 in $($IP4 route list table 0 | awk '{print $2}' | egrep '[0-9]{1,3}(\.[0-9]{1,3}){3}'); do
  38                 $IPS -! add mwan3_connected_v4_temp $connected_network_v4
  39         done
  40
  41         $IPS add mwan3_connected_v4_temp 224.0.0.0/3
  42
  43         $IPS swap mwan3_connected_v4_temp mwan3_connected_v4
  44         $IPS destroy mwan3_connected_v4_temp
  45
  46         $IPS -! create mwan3_connected_v6 hash:net family inet6
  47         $IPS create mwan3_connected_v6_temp hash:net family inet6
  48
  49         for connected_network_v6 in $($IP6 route | awk '{print $1}' | egrep '([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])'); do
  50                 $IPS -! add mwan3_connected_v6_temp $connected_network_v6
  51         done
  52
  53         $IPS swap mwan3_connected_v6_temp mwan3_connected_v6
  54         $IPS destroy mwan3_connected_v6_temp
  55
  56         $IPS -! create mwan3_connected list:set
  57         $IPS -! add mwan3_connected mwan3_connected_v4
  58         $IPS -! add mwan3_connected mwan3_connected_v6
  59 }
  60
  61 mwan3_set_general_rules()
  62 {
  63         local IP
  64
  65         for IP in "$IP4" "$IP6"; do
  66
  67                 if [ -z "$($IP rule list | awk '$1 == "2253:"')" ]; then
  68                         $IP rule add pref 2253 fwmark 0xfd00/0xff00 blackhole
  69                 fi
  70
  71                 if [ -z "$($IP rule list | awk '$1 == "2254:"')" ]; then
  72                         $IP rule add pref 2254 fwmark 0xfe00/0xff00 unreachable
  73                 fi
  74         done
  75 }
  76
  77 mwan3_set_general_iptables()
  78 {
  79         local IPT
  80
  81         for IPT in "$IPT4" "$IPT6"; do
  82
  83                 if ! $IPT -S mwan3_ifaces_in &> /dev/null; then
  84                         $IPT -N mwan3_ifaces_in
  85                 fi
  86
  87                 if ! $IPT -S mwan3_connected &> /dev/null; then
  88                         $IPT -N mwan3_connected
  89                         $IPS -! create mwan3_connected list:set
  90                         $IPT -A mwan3_connected -m set --match-set mwan3_connected dst -j MARK --set-xmark 0xff00/0xff00
  91                 fi
  92
  93                 if ! $IPT -S mwan3_ifaces_out &> /dev/null; then
  94                         $IPT -N mwan3_ifaces_out
  95                 fi
  96
  97                 if ! $IPT -S mwan3_rules &> /dev/null; then
  98                         $IPT -N mwan3_rules
  99                 fi
 100
 101                 if ! $IPT -S mwan3_hook &> /dev/null; then
 102                         $IPT -N mwan3_hook
 103                         $IPT -A mwan3_hook -j CONNMARK --restore-mark --nfmask 0xff00 --ctmask 0xff00
 104                         $IPT -A mwan3_hook -m mark --mark 0x0/0xff00 -j mwan3_ifaces_in
 105                         $IPT -A mwan3_hook -m mark --mark 0x0/0xff00 -j mwan3_connected
 106                         $IPT -A mwan3_hook -m mark --mark 0x0/0xff00 -j mwan3_ifaces_out
 107                         $IPT -A mwan3_hook -m mark --mark 0x0/0xff00 -j mwan3_rules
 108                         $IPT -A mwan3_hook -j CONNMARK --save-mark --nfmask 0xff00 --ctmask 0xff00
 109                         $IPT -A mwan3_hook -m mark ! --mark 0xff00/0xff00 -j mwan3_connected
 110                 fi
 111
 112                 if ! $IPT -S PREROUTING | grep mwan3_hook &> /dev/null; then
 113                         $IPT -A PREROUTING -j mwan3_hook
 114                 fi
 115
 116                 if ! $IPT -S OUTPUT | grep mwan3_hook &> /dev/null; then
 117                         $IPT -A OUTPUT -j mwan3_hook
 118                 fi
 119         done
 120 }
 121
 122 mwan3_create_iface_iptables()
 123 {
 124         local id family src_ip src_ipv6
 125
 126         config_get family $1 family ipv4
 127         mwan3_get_iface_id id $1
 128
 129         [ -n "$id" ] || return 0
 130
 131         if [ "$family" == "ipv4" ]; then
 132
 133                 ubus call network.interface.${1}_4 status &>/dev/null
 134                 if [ "$?" -eq "0" ]; then
 135                         network_get_ipaddr src_ip ${1}_4
 136                 else
 137                         network_get_ipaddr src_ip $1
 138                 fi
 139
 140                 $IPS -! create mwan3_connected list:set
 141
 142                 if ! $IPT4 -S mwan3_ifaces_in &> /dev/null; then
 143                         $IPT4 -N mwan3_ifaces_in
 144                 fi
 145
 146                 if ! $IPT4 -S mwan3_ifaces_out &> /dev/null; then
 147                         $IPT4 -N mwan3_ifaces_out
 148                 fi
 149
 150                 if ! $IPT4 -S mwan3_iface_in_$1 &> /dev/null; then
 151                         $IPT4 -N mwan3_iface_in_$1
 152                 fi
 153
 154                 if ! $IPT4 -S mwan3_iface_out_$1 &> /dev/null; then
 155                         $IPT4 -N mwan3_iface_out_$1
 156                 fi
 157
 158                 $IPT4 -F mwan3_iface_in_$1
 159                 $IPT4 -A mwan3_iface_in_$1 -i $2 -m set --match-set mwan3_connected src -m mark --mark 0x0/0xff00 -m comment --comment "default" -j MARK --set-xmark 0xff00/0xff00
 160                 $IPT4 -A mwan3_iface_in_$1 -i $2 -m mark --mark 0x0/0xff00 -m comment --comment "$1" -j MARK --set-xmark $(($id*256))/0xff00
 161
 162                 $IPT4 -D mwan3_ifaces_in -m mark --mark 0x0/0xff00 -j mwan3_iface_in_$1 &> /dev/null
 163                 $IPT4 -A mwan3_ifaces_in -m mark --mark 0x0/0xff00 -j mwan3_iface_in_$1
 164
 165                 $IPT4 -F mwan3_iface_out_$1
 166                 $IPT4 -A mwan3_iface_out_$1 -s $src_ip -m mark --mark 0x0/0xff00 -m comment --comment "$1" -j MARK --set-xmark $(($id*256))/0xff00
 167
 168                 $IPT4 -D mwan3_ifaces_out -m mark --mark 0x0/0xff00 -j mwan3_iface_out_$1 &> /dev/null
 169                 $IPT4 -A mwan3_ifaces_out -m mark --mark 0x0/0xff00 -j mwan3_iface_out_$1
 170         fi
 171
 172         if [ "$family" == "ipv6" ]; then
 173
 174                 ubus call network.interface.${1}_6 status &>/dev/null
 175                 if [ "$?" -eq "0" ]; then
 176                         network_get_ipaddr6 src_ipv6 ${1}_6
 177                 else
 178                         network_get_ipaddr6 src_ipv6 $1
 179                 fi
 180
 181                 $IPS -! create mwan3_connected_v6 hash:net family inet6
 182
 183                 if ! $IPT6 -S mwan3_ifaces_in &> /dev/null; then
 184                         $IPT6 -N mwan3_ifaces_in
 185                 fi
 186
 187                 if ! $IPT6 -S mwan3_ifaces_out &> /dev/null; then
 188                         $IPT6 -N mwan3_ifaces_out
 189                 fi
 190
 191                 if ! $IPT6 -S mwan3_iface_in_$1 &> /dev/null; then
 192                         $IPT6 -N mwan3_iface_in_$1
 193                 fi
 194
 195                 if ! $IPT6 -S mwan3_iface_out_$1 &> /dev/null; then
 196                         $IPT6 -N mwan3_iface_out_$1
 197                 fi
 198
 199                 $IPT6 -F mwan3_iface_in_$1
 200                 $IPT6 -A mwan3_iface_in_$1 -i $2 -m set --match-set mwan3_connected_v6 src -m mark --mark 0x0/0xff00 -m comment --comment "default" -j MARK --set-xmark 0xff00/0xff00
 201                 $IPT6 -A mwan3_iface_in_$1 -i $2 -m mark --mark 0x0/0xff00 -m comment --comment "$1" -j MARK --set-xmark $(($id*256))/0xff00
 202
 203                 $IPT6 -D mwan3_ifaces_in -m mark --mark 0x0/0xff00 -j mwan3_iface_in_$1 &> /dev/null
 204                 $IPT6 -A mwan3_ifaces_in -m mark --mark 0x0/0xff00 -j mwan3_iface_in_$1
 205
 206                 $IPT6 -F mwan3_iface_out_$1
 207                 $IPT6 -A mwan3_iface_out_$1 -s $src_ipv6 -m mark --mark 0x0/0xff00 -m comment --comment "$1" -j MARK --set-xmark $(($id*256))/0xff00
 208
 209                 $IPT6 -D mwan3_ifaces_out -m mark --mark 0x0/0xff00 -j mwan3_iface_out_$1 &> /dev/null
 210                 $IPT6 -A mwan3_ifaces_out -m mark --mark 0x0/0xff00 -j mwan3_iface_out_$1
 211         fi
 212 }
 213
 214 mwan3_delete_iface_iptables()
 215 {
 216         config_get family $1 family ipv4
 217
 218         if [ "$family" == "ipv4" ]; then
 219
 220                 $IPT4 -D mwan3_ifaces_in -m mark --mark 0x0/0xff00 -j mwan3_iface_in_$1 &> /dev/null
 221                 $IPT4 -F mwan3_iface_in_$1 &> /dev/null
 222                 $IPT4 -X mwan3_iface_in_$1 &> /dev/null
 223
 224                 $IPT4 -D mwan3_ifaces_out -m mark --mark 0x0/0xff00 -j mwan3_iface_out_$1 &> /dev/null
 225                 $IPT4 -F mwan3_iface_out_$1 &> /dev/null
 226                 $IPT4 -X mwan3_iface_out_$1 &> /dev/null
 227         fi
 228
 229         if [ "$family" == "ipv6" ]; then
 230
 231                 $IPT6 -D mwan3_ifaces_in -m mark --mark 0x0/0xff00 -j mwan3_iface_in_$1 &> /dev/null
 232                 $IPT6 -F mwan3_iface_in_$1 &> /dev/null
 233                 $IPT6 -X mwan3_iface_in_$1 &> /dev/null
 234
 235                 $IPT6 -D mwan3_ifaces_out -m mark --mark 0x0/0xff00 -j mwan3_iface_out_$1 &> /dev/null
 236                 $IPT6 -F mwan3_iface_out_$1 &> /dev/null
 237                 $IPT6 -X mwan3_iface_out_$1 &> /dev/null
 238         fi
 239 }
 240
 241 mwan3_create_iface_route()
 242 {
 243         local id route_args
 244
 245         config_get family $1 family ipv4
 246         mwan3_get_iface_id id $1
 247
 248         [ -n "$id" ] || return 0
 249
 250         if [ "$family" == "ipv4" ]; then
 251                 ubus call network.interface.${1}_4 status &>/dev/null
 252                 if [ "$?" -eq "0" ]; then
 253                         network_get_gateway route_args ${1}_4
 254                 else
 255                         network_get_gateway route_args $1
 256                 fi
 257
 258                 route_args="via $route_args dev $2"
 259
 260                 $IP4 route flush table $id
 261                 $IP4 route add table $id default $route_args
 262         fi
 263
 264         if [ "$family" == "ipv6" ]; then
 265
 266                 ubus call network.interface.${1}_6 status &>/dev/null
 267                 if [ "$?" -eq "0" ]; then
 268                         network_get_gateway6 route_args ${1}_6
 269                 else
 270                         network_get_gateway6 route_args $1
 271                 fi
 272
 273                 route_args="via $route_args dev $2"
 274
 275                 $IP6 route flush table $id
 276                 $IP6 route add table $id default $route_args
 277         fi
 278 }
 279
 280 mwan3_delete_iface_route()
 281 {
 282         local id
 283
 284         config_get family $1 family ipv4
 285         mwan3_get_iface_id id $1
 286
 287         [ -n "$id" ] || return 0
 288
 289         if [ "$family" == "ipv4" ]; then
 290                 $IP4 route flush table $id
 291         fi
 292
 293         if [ "$family" == "ipv6" ]; then
 294                 $IP6 route flush table $id
 295         fi
 296 }
 297
 298 mwan3_create_iface_rules()
 299 {
 300         local id family
 301
 302         config_get family $1 family ipv4
 303         mwan3_get_iface_id id $1
 304
 305         [ -n "$id" ] || return 0
 306
 307         if [ "$family" == "ipv4" ]; then
 308
 309                 while [ -n "$($IP4 rule list | awk '$1 == "'$(($id+1000)):'"')" ]; do
 310                         $IP4 rule del pref $(($id+1000))
 311                 done
 312
 313                 while [ -n "$($IP4 rule list | awk '$1 == "'$(($id+2000)):'"')" ]; do
 314                         $IP4 rule del pref $(($id+2000))
 315                 done
 316
 317                 $IP4 rule add pref $(($id+1000)) iif $2 lookup main
 318                 $IP4 rule add pref $(($id+2000)) fwmark $(($id*256))/0xff00 lookup $id
 319         fi
 320
 321         if [ "$family" == "ipv6" ]; then
 322
 323                 while [ -n "$($IP6 rule list | awk '$1 == "'$(($id+1000)):'"')" ]; do
 324                         $IP6 rule del pref $(($id+1000))
 325                 done
 326
 327                 while [ -n "$($IP6 rule list | awk '$1 == "'$(($id+2000)):'"')" ]; do
 328                         $IP6 rule del pref $(($id+2000))
 329                 done
 330
 331                 $IP6 rule add pref $(($id+1000)) iif $2 lookup main
 332                 $IP6 rule add pref $(($id+2000)) fwmark $(($id*256))/0xff00 lookup $id
 333         fi
 334 }
 335
 336 mwan3_delete_iface_rules()
 337 {
 338         local id family
 339
 340         config_get family $1 family ipv4
 341         mwan3_get_iface_id id $1
 342
 343         [ -n "$id" ] || return 0
 344
 345         if [ "$family" == "ipv4" ]; then
 346
 347                 while [ -n "$($IP4 rule list | awk '$1 == "'$(($id+1000)):'"')" ]; do
 348                         $IP4 rule del pref $(($id+1000))
 349                 done
 350
 351                 while [ -n "$($IP4 rule list | awk '$1 == "'$(($id+2000)):'"')" ]; do
 352                         $IP4 rule del pref $(($id+2000))
 353                 done
 354         fi
 355
 356         if [ "$family" == "ipv6" ]; then
 357
 358                 while [ -n "$($IP6 rule list | awk '$1 == "'$(($id+1000)):'"')" ]; do
 359                         $IP6 rule del pref $(($id+1000))
 360                 done
 361
 362                 while [ -n "$($IP6 rule list | awk '$1 == "'$(($id+2000)):'"')" ]; do
 363                         $IP6 rule del pref $(($id+2000))
 364                 done
 365         fi
 366 }
 367
 368 mwan3_delete_iface_ipset_entries()
 369 {
 370         local id setname entry
 371
 372         mwan3_get_iface_id id $1
 373
 374         [ -n "$id" ] || return 0
 375
 376         for setname in $(ipset -n list | grep ^mwan3_sticky_); do
 377                 for entry in $(ipset list $setname | grep "$(echo $(($id*256)) | awk '{ printf "0x%08x", $1; }')" | cut -d ' ' -f 1); do
 378                         $IPS del $setname $entry
 379                 done
 380         done
 381 }
 382
 383 mwan3_track()
 384 {
 385         local track_ip track_ips
 386
 387         mwan3_list_track_ips()
 388         {
 389                 track_ips="$1 $track_ips"
 390         }
 391         config_list_foreach $1 track_ip mwan3_list_track_ips
 392
 393         kill $(pgrep -f "mwan3track $1") &> /dev/null
 394         if [ -n "$track_ips" ]; then
 395                 [ -x /usr/sbin/mwan3track ] && /usr/sbin/mwan3track $1 $2 $track_ips &
 396         fi
 397 }
 398
 399 mwan3_track_signal()
 400 {
 401         local pid
 402
 403         pid="$(pgrep -f "mwan3track $1")"
 404         if [ "${pid}" != "" ]; then
 405                 kill -USR1 "${pid}"
 406         else
 407                 $LOG warn "Unable to send signal USR1 to mwan3track on interface $1 with pid ${pid}"
 408         fi
 409 }
 410
 411 mwan3_set_policy()
 412 {
 413         local iface_count id iface family metric probability weight
 414
 415         config_get iface $1 interface
 416         config_get metric $1 metric 1
 417         config_get weight $1 weight 1
 418
 419         [ -n "$iface" ] || return 0
 420
 421         mwan3_get_iface_id id $iface
 422
 423         [ -n "$id" ] || return 0
 424
 425         config_get family $iface family ipv4
 426
 427         if [ "$family" == "ipv4" ]; then
 428
 429                 if [ -n "$($IP4 route list table $id)" ]; then
 430                         if [ "$metric" -lt "$lowest_metric_v4" ]; then
 431
 432                                 total_weight_v4=$weight
 433                                 $IPT4 -F mwan3_policy_$policy
 434                                 $IPT4 -A mwan3_policy_$policy -m mark --mark 0x0/0xff00 -m comment --comment "$iface $weight $weight" -j MARK --set-xmark $(($id*256))/0xff00
 435
 436                                 lowest_metric_v4=$metric
 437
 438                         elif [ "$metric" -eq "$lowest_metric_v4" ]; then
 439
 440                                 total_weight_v4=$(($total_weight_v4+$weight))
 441                                 probability=$(($weight*1000/$total_weight_v4))
 442
 443                                 if [ "$probability" -lt 10 ]; then
 444                                         probability="0.00$probability"
 445                                 elif [ $probability -lt 100 ]; then
 446                                         probability="0.0$probability"
 447                                 elif [ $probability -lt 1000 ]; then
 448                                         probability="0.$probability"
 449                                 else
 450                                         probability="1"
 451                                 fi
 452
 453                                 probability="-m statistic --mode random --probability $probability"
 454
 455                                 $IPT4 -I mwan3_policy_$policy -m mark --mark 0x0/0xff00 $probability -m comment --comment "$iface $weight $total_weight_v4" -j MARK --set-xmark $(($id*256))/0xff00
 456                         fi
 457                 fi
 458         fi
 459
 460         if [ "$family" == "ipv6" ]; then
 461
 462                 if [ -n "$($IP6 route list table $id)" ]; then
 463                         if [ "$metric" -lt "$lowest_metric_v6" ]; then
 464
 465                                 total_weight_v6=$weight
 466                                 $IPT6 -F mwan3_policy_$policy
 467                                 $IPT6 -A mwan3_policy_$policy -m mark --mark 0x0/0xff00 -m comment --comment "$iface $weight $weight" -j MARK --set-xmark $(($id*256))/0xff00
 468
 469                                 lowest_metric_v6=$metric
 470
 471                         elif [ "$metric" -eq "$lowest_metric_v6" ]; then
 472
 473                                 total_weight_v6=$(($total_weight_v6+$weight))
 474                                 probability=$(($weight*1000/$total_weight_v6))
 475
 476                                 if [ "$probability" -lt 10 ]; then
 477                                         probability="0.00$probability"
 478                                 elif [ $probability -lt 100 ]; then
 479                                         probability="0.0$probability"
 480                                 elif [ $probability -lt 1000 ]; then
 481                                         probability="0.$probability"
 482                                 else
 483                                         probability="1"
 484                                 fi
 485
 486                                 probability="-m statistic --mode random --probability $probability"
 487
 488                                 $IPT6 -I mwan3_policy_$policy -m mark --mark 0x0/0xff00 $probability -m comment --comment "$iface $weight $total_weight_v6" -j MARK --set-xmark $(($id*256))/0xff00
 489                         fi
 490                 fi
 491         fi
 492 }
 493
 494 mwan3_create_policies_iptables()
 495 {
 496         local last_resort lowest_metric_v4 lowest_metric_v6 total_weight_v4 total_weight_v6 policy IPT
 497
 498         policy="$1"
 499
 500         config_get last_resort $1 last_resort unreachable
 501
 502         if [ "$1" != $(echo "$1" | cut -c1-15) ]; then
 503                 $LOG warn "Policy $1 exceeds max of 15 chars. Not setting policy" && return 0
 504         fi
 505
 506         for IPT in "$IPT4" "$IPT6"; do
 507
 508                 if ! $IPT -S mwan3_policy_$1 &> /dev/null; then
 509                         $IPT -N mwan3_policy_$1
 510                 fi
 511
 512                 $IPT -F mwan3_policy_$1
 513
 514                 case "$last_resort" in
 515                         blackhole)
 516                                 $IPT -A mwan3_policy_$1 -m mark --mark 0x0/0xff00 -m comment --comment "blackhole" -j MARK --set-xmark 0xfd00/0xff00
 517                         ;;
 518                         default)
 519                                 $IPT -A mwan3_policy_$1 -m mark --mark 0x0/0xff00 -m comment --comment "default" -j MARK --set-xmark 0xff00/0xff00
 520                         ;;
 521                         *)
 522                                 $IPT -A mwan3_policy_$1 -m mark --mark 0x0/0xff00 -m comment --comment "unreachable" -j MARK --set-xmark 0xfe00/0xff00
 523                         ;;
 524                 esac
 525         done
 526
 527         lowest_metric_v4=256
 528         total_weight_v4=0
 529
 530         lowest_metric_v6=256
 531         total_weight_v6=0
 532
 533         config_list_foreach $1 use_member mwan3_set_policy
 534 }
 535
 536 mwan3_set_policies_iptables()
 537 {
 538         config_foreach mwan3_create_policies_iptables policy
 539 }
 540
 541 mwan3_set_sticky_iptables()
 542 {
 543         local id iface
 544
 545         for iface in $($IPT4 -S $policy | cut -s -d'"' -f2 | awk '{print $1}'); do
 546
 547                 if [ "$iface" == "$1" ]; then
 548
 549                         mwan3_get_iface_id id $1
 550
 551                         [ -n "$id" ] || return 0
 552
 553                         for IPT in "$IPT4" "$IPT6"; do
 554                                 if [ -n "$($IPT -S mwan3_iface_in_$1 2> /dev/null)" -a -n "$($IPT -S mwan3_iface_out_$1 2> /dev/null)" ]; then
 555                                         $IPT -I mwan3_rule_$rule -m mark --mark $(($id*256))/0xff00 -m set ! --match-set mwan3_sticky_$rule src,src -j MARK --set-xmark 0x0/0xff00
 556                                         $IPT -I mwan3_rule_$rule -m mark --mark 0/0xff00 -j MARK --set-xmark $(($id*256))/0xff00
 557                                 fi
 558                         done
 559                 fi
 560         done
 561 }
 562
 563 mwan3_set_user_iptables_rule()
 564 {
 565         local ipset family proto policy src_ip src_port sticky dest_ip dest_port use_policy timeout rule policy IPT
 566
 567         rule="$1"
 568
 569         config_get sticky $1 sticky 0
 570         config_get timeout $1 timeout 600
 571         config_get ipset $1 ipset
 572         config_get proto $1 proto all
 573         config_get src_ip $1 src_ip 0.0.0.0/0
 574         config_get src_port $1 src_port 0:65535
 575         config_get dest_ip $1 dest_ip 0.0.0.0/0
 576         config_get dest_port $1 dest_port 0:65535
 577         config_get use_policy $1 use_policy
 578         config_get family $1 family any
 579
 580         if [ "$1" != $(echo "$1" | cut -c1-15) ]; then
 581                 $LOG warn "Rule $1 exceeds max of 15 chars. Not setting rule" && return 0
 582         fi
 583
 584         if [ -n "$ipset" ]; then
 585                 ipset="-m set --match-set $ipset dst"
 586         fi
 587
 588         if [ -n "$use_policy" ]; then
 589                 if [ "$use_policy" == "default" ]; then
 590                         policy="MARK --set-xmark 0xff00/0xff00"
 591                 elif [ "$use_policy" == "unreachable" ]; then
 592                         policy="MARK --set-xmark 0xfe00/0xff00"
 593                 elif [ "$use_policy" == "blackhole" ]; then
 594                         policy="MARK --set-xmark 0xfd00/0xff00"
 595                 else
 596                         if [ "$sticky" -eq 1 ]; then
 597
 598                                 policy="mwan3_policy_$use_policy"
 599
 600                                 for IPT in "$IPT4" "$IPT6"; do
 601                                         if ! $IPT -S $policy &> /dev/null; then
 602                                                 $IPT -N $policy
 603                                         fi
 604
 605                                         if ! $IPT -S mwan3_rule_$1 &> /dev/null; then
 606                                                 $IPT -N mwan3_rule_$1
 607                                         fi
 608
 609                                         $IPT -F mwan3_rule_$1
 610                                 done
 611
 612                                 $IPS -! create mwan3_sticky_v4_$rule hash:ip,mark markmask 0xff00 timeout $timeout
 613                                 $IPS -! create mwan3_sticky_v6_$rule hash:ip,mark markmask 0xff00 timeout $timeout family inet6
 614                                 $IPS -! create mwan3_sticky_$rule list:set
 615                                 $IPS -! add mwan3_sticky_$rule mwan3_sticky_v4_$rule
 616                                 $IPS -! add mwan3_sticky_$rule mwan3_sticky_v6_$rule
 617
 618                                 config_foreach mwan3_set_sticky_iptables interface
 619
 620                                 for IPT in "$IPT4" "$IPT6"; do
 621                                         $IPT -A mwan3_rule_$1 -m mark --mark 0/0xff00 -j $policy
 622                                         $IPT -A mwan3_rule_$1 -m mark ! --mark 0xfc00/0xfc00 -j SET --del-set mwan3_sticky_$rule src,src
 623                                         $IPT -A mwan3_rule_$1 -m mark ! --mark 0xfc00/0xfc00 -j SET --add-set mwan3_sticky_$rule src,src
 624                                 done
 625
 626                                 policy="mwan3_rule_$1"
 627                         else
 628                                 policy="mwan3_policy_$use_policy"
 629
 630                                 for IPT in "$IPT4" "$IPT6"; do
 631                                         if ! $IPT -S $policy &> /dev/null; then
 632                                                 $IPT -N $policy
 633                                         fi
 634                                 done
 635
 636                         fi
 637                 fi
 638
 639                 if [ "$family" == "any" ]; then
 640
 641                         for IPT in "$IPT4" "$IPT6"; do
 642                                 case $proto in
 643                                         tcp|udp)
 644                                         $IPT -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m multiport --sports $src_port -m multiport --dports $dest_port -m mark --mark 0/0xff00 -m comment --comment "$1" -j $policy &> /dev/null
 645                                         ;;
 646                                         *)
 647                                         $IPT -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m mark --mark 0/0xff00 -m comment --comment "$1" -j $policy &> /dev/null
 648                                         ;;
 649                                 esac
 650                         done
 651
 652                 elif [ "$family" == "ipv4" ]; then
 653
 654                         case $proto in
 655                                 tcp|udp)
 656                                 $IPT4 -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m multiport --sports $src_port -m multiport --dports $dest_port -m mark --mark 0/0xff00 -m comment --comment "$1" -j $policy &> /dev/null
 657                                 ;;
 658                                 *)
 659                                 $IPT4 -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m mark --mark 0/0xff00 -m comment --comment "$1" -j $policy &> /dev/null
 660                                 ;;
 661                         esac
 662
 663                 elif [ "$family" == "ipv6" ]; then
 664
 665                         case $proto in
 666                                 tcp|udp)
 667                                 $IPT6 -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m multiport --sports $src_port -m multiport --dports $dest_port -m mark --mark 0/0xff00 -m comment --comment "$1" -j $policy &> /dev/null
 668                                 ;;
 669                                 *)
 670                                 $IPT6 -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m mark --mark 0/0xff00 -m comment --comment "$1" -j $policy &> /dev/null
 671                                 ;;
 672                         esac
 673                 fi
 674         fi
 675 }
 676
 677 mwan3_set_user_rules()
 678 {
 679         local IPT
 680
 681         for IPT in "$IPT4" "$IPT6"; do
 682
 683                 if ! $IPT -S mwan3_rules &> /dev/null; then
 684                         $IPT -N mwan3_rules
 685                 fi
 686
 687                 $IPT -F mwan3_rules
 688         done
 689
 690         config_foreach mwan3_set_user_iptables_rule rule
 691 }
 692
 693 mwan3_report_iface_status()
 694 {
 695         local device result track_ips tracking IP IPT
 696
 697         mwan3_get_iface_id id $1
 698         network_get_device device $1
 699         config_get enabled "$1" enabled 0
 700         config_get family "$1" family ipv4
 701
 702         if [ "$family" == "ipv4" ]; then
 703                 IP="$IP4"
 704                 IPT="$IPT4"
 705         fi
 706
 707         if [ "$family" == "ipv6" ]; then
 708                 IP="$IP6"
 709                 IPT="$IPT6"
 710         fi
 711
 712         if [ -z "$id" -o -z "$device" ]; then
 713                 result="unknown"
 714         elif [ -n "$($IP rule | awk '$1 == "'$(($id+1000)):'"')"i -a -n "$($IP rule | awk '$1 == "'$(($id+2000)):'"')" -a -n "$($IPT -S mwan3_iface_in_$1 2> /dev/null)" -a -n "$($IPT -S mwan3_iface_out_$1 2> /dev/null)" -a -n "$($IP route list table $id default dev $device 2> /dev/null)" ]; then
 715                 result="online"
 716         elif [ -n "$($IP rule | awk '$1 == "'$(($id+1000)):'"')" -o -n "$($IP rule | awk '$1 == "'$(($id+2000)):'"')" -o -n "$($IPT -S mwan3_iface_in_$1 2> /dev/null)" -o -n "$($IPT -S mwan3_iface_out_$1 2> /dev/null)" -o -n "$($IP route list table $id default dev $device 2> /dev/null)" ]; then
 717                 result="error"
 718         else
 719                 if [ "$enabled" == "1" ]; then
 720                         result="offline"
 721                 else
 722                         result="disabled"
 723                 fi
 724         fi
 725
 726         mwan3_list_track_ips()
 727         {
 728                 track_ips="$1 $track_ips"
 729         }
 730         config_list_foreach $1 track_ip mwan3_list_track_ips
 731
 732         if [ -n "$track_ips" ]; then
 733                 if [ -n "$(ps -w | grep mwan3track | grep -v grep | sed '/.*\/usr\/sbin\/mwan3track \([^ ]*\) .*$/!d;s//\1/' | awk '$1 == "'$1'"')" ]; then
 734                         tracking="active"
 735                 else
 736                         tracking="down"
 737                 fi
 738         else
 739                 tracking="not enabled"
 740         fi
 741
 742         echo " interface $1 is $result and tracking is $tracking"
 743 }
 744
 745 mwan3_report_policies_v4()
 746 {
 747         local percent policy share total_weight weight iface
 748
 749         for policy in $($IPT4 -S | awk '{print $2}' | grep mwan3_policy_ | sort -u); do
 750                 echo "$policy:" | sed 's/mwan3_policy_//'
 751
 752                 [ -n "$total_weight" ] || total_weight=$($IPT4 -S $policy | cut -s -d'"' -f2 | head -1 | awk '{print $3}')
 753
 754                 if [ ! -z "${total_weight##*[!0-9]*}" ]; then
 755                         for iface in $($IPT4 -S $policy | cut -s -d'"' -f2 | awk '{print $1}'); do
 756                                 weight=$($IPT4 -S $policy | cut -s -d'"' -f2 | awk '$1 == "'$iface'"' | awk '{print $2}')
 757                                 percent=$(($weight*100/$total_weight))
 758                                 echo " $iface ($percent%)"
 759                         done
 760                 else
 761                         echo " $($IPT4 -S $policy | sed '/.*--comment \([^ ]*\) .*$/!d;s//\1/;q')"
 762                 fi
 763
 764                 unset total_weight
 765
 766                 echo -e
 767         done
 768 }
 769
 770 mwan3_report_policies_v6()
 771 {
 772         local percent policy share total_weight weight iface
 773
 774         for policy in $($IPT6 -S | awk '{print $2}' | grep mwan3_policy_ | sort -u); do
 775                 echo "$policy:" | sed 's/mwan3_policy_//'
 776
 777                 [ -n "$total_weight" ] || total_weight=$($IPT6 -S $policy | cut -s -d'"' -f2 | head -1 | awk '{print $3}')
 778
 779                 if [ ! -z "${total_weight##*[!0-9]*}" ]; then
 780                         for iface in $($IPT6 -S $policy | cut -s -d'"' -f2 | awk '{print $1}'); do
 781                                 weight=$($IPT6 -S $policy | cut -s -d'"' -f2 | awk '$1 == "'$iface'"' | awk '{print $2}')
 782                                 percent=$(($weight*100/$total_weight))
 783                                 echo " $iface ($percent%)"
 784                         done
 785                 else
 786                         echo " $($IPT6 -S $policy | sed '/.*--comment \([^ ]*\) .*$/!d;s//\1/;q')"
 787                 fi
 788
 789                 unset total_weight
 790
 791                 echo -e
 792         done
 793 }
 794
 795 mwan3_report_connected_v4()
 796 {
 797         local address
 798
 799         if [ -n "$($IPT4 -S mwan3_connected 2> /dev/null)" ]; then
 800                 for address in $($IPS list mwan3_connected_v4 | egrep '[0-9]{1,3}(\.[0-9]{1,3}){3}'); do
 801                         echo " $address"
 802                 done
 803         fi
 804 }
 805
 806 mwan3_report_connected_v6()
 807 {
 808         local address
 809
 810         if [ -n "$($IPT6 -S mwan3_connected 2> /dev/null)" ]; then
 811                 for address in $($IPS list mwan3_connected_v6 | egrep '([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])'); do
 812                         echo " $address"
 813                 done
 814         fi
 815 }
 816
 817 mwan3_report_rules_v4()
 818 {
 819         if [ -n "$($IPT4 -S mwan3_rules 2> /dev/null)" ]; then
 820                 $IPT4 -L mwan3_rules -n -v 2> /dev/null | tail -n+3 | sed 's/mark.*//' | sed 's/mwan3_policy_/- /' | sed 's/mwan3_rule_/S /'
 821         fi
 822 }
 823
 824 mwan3_report_rules_v6()
 825 {
 826         if [ -n "$($IPT6 -S mwan3_rules 2> /dev/null)" ]; then
 827                 $IPT6 -L mwan3_rules -n -v 2> /dev/null | tail -n+3 | sed 's/mark.*//' | sed 's/mwan3_policy_/- /' | sed 's/mwan3_rule_/S /'
 828         fi
 829 }
 830
 831 mwan3_flush_conntrack()
 832 {
 833         local flush_conntrack
 834
 835         config_get flush_conntrack $1 flush_conntrack never
 836
 837         if [ -e "$CONNTRACK_FILE" ]; then
 838                 case $flush_conntrack in
 839                         ifup)
 840                                 [ "$3" = "ifup" ] && {
 841                                         echo f > ${CONNTRACK_FILE}
 842                                         $LOG info "connection tracking flushed on interface $1 ($2) $3"
 843                                 }
 844                                 ;;
 845                         ifdown)
 846                                 [ "$3" = "ifdown" ] && {
 847                                         echo f > ${CONNTRACK_FILE}
 848                                         $LOG info "connection tracking flushed on interface $1 ($2) $3"
 849                                 }
 850                                 ;;
 851                         always)
 852                                 echo f > ${CONNTRACK_FILE}
 853                                 $LOG info "connection tracking flushed on interface $1 ($2) $3"
 854                                 ;;
 855                         never)
 856                                 $LOG info "connection tracking not flushed on interface $1 ($2) $3"
 857                                 ;;
 858                 esac
 859         else
 860                 $LOG warning "connection tracking not enabled"
 861         fi
 862 }