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

   1 #!/bin/sh
   2
   3 IP4="/usr/bin/ip -4"
   4 IP6="/usr/bin/ip -6"
   5 IPS="/usr/sbin/ipset"
   6 IPT4="/usr/sbin/iptables -t mangle -w"
   7 IPT6="/usr/sbin/ip6tables -t mangle -w"
   8 LOG="/usr/bin/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         if [ -e /var/run/mwan3track-$1.pid ] ; then
 394                 kill $(cat /var/run/mwan3track-$1.pid) &> /dev/null
 395         fi
 396
 397         if [ -n "$track_ips" ]; then
 398                 [ -x /usr/sbin/mwan3track ] && /usr/sbin/mwan3track $1 $2 $track_ips &
 399         fi
 400 }
 401
 402 mwan3_set_policy()
 403 {
 404         local iface_count id iface family metric probability weight
 405
 406         config_get iface $1 interface
 407         config_get metric $1 metric 1
 408         config_get weight $1 weight 1
 409
 410         [ -n "$iface" ] || return 0
 411
 412         mwan3_get_iface_id id $iface
 413
 414         [ -n "$id" ] || return 0
 415
 416         config_get family $iface family ipv4
 417
 418         if [ "$family" == "ipv4" ]; then
 419
 420                 if [ -n "$($IP4 route list table $id)" ]; then
 421                         if [ "$metric" -lt "$lowest_metric_v4" ]; then
 422
 423                                 total_weight_v4=$weight
 424                                 $IPT4 -F mwan3_policy_$policy
 425                                 $IPT4 -A mwan3_policy_$policy -m mark --mark 0x0/0xff00 -m comment --comment "$iface $weight $weight" -j MARK --set-xmark $(($id*256))/0xff00
 426
 427                                 lowest_metric_v4=$metric
 428
 429                         elif [ "$metric" -eq "$lowest_metric_v4" ]; then
 430
 431                                 total_weight_v4=$(($total_weight_v4+$weight))
 432                                 probability=$(($weight*1000/$total_weight_v4))
 433
 434                                 if [ "$probability" -lt 10 ]; then
 435                                         probability="0.00$probability"
 436                                 elif [ $probability -lt 100 ]; then
 437                                         probability="0.0$probability"
 438                                 elif [ $probability -lt 1000 ]; then
 439                                         probability="0.$probability"
 440                                 else
 441                                         probability="1"
 442                                 fi
 443
 444                                 probability="-m statistic --mode random --probability $probability"
 445
 446                                 $IPT4 -I mwan3_policy_$policy -m mark --mark 0x0/0xff00 $probability -m comment --comment "$iface $weight $total_weight_v4" -j MARK --set-xmark $(($id*256))/0xff00
 447                         fi
 448                 fi
 449         fi
 450
 451         if [ "$family" == "ipv6" ]; then
 452
 453                 if [ -n "$($IP6 route list table $id)" ]; then
 454                         if [ "$metric" -lt "$lowest_metric_v6" ]; then
 455
 456                                 total_weight_v6=$weight
 457                                 $IPT6 -F mwan3_policy_$policy
 458                                 $IPT6 -A mwan3_policy_$policy -m mark --mark 0x0/0xff00 -m comment --comment "$iface $weight $weight" -j MARK --set-xmark $(($id*256))/0xff00
 459
 460                                 lowest_metric_v6=$metric
 461
 462                         elif [ "$metric" -eq "$lowest_metric_v6" ]; then
 463
 464                                 total_weight_v6=$(($total_weight_v6+$weight))
 465                                 probability=$(($weight*1000/$total_weight_v6))
 466
 467                                 if [ "$probability" -lt 10 ]; then
 468                                         probability="0.00$probability"
 469                                 elif [ $probability -lt 100 ]; then
 470                                         probability="0.0$probability"
 471                                 elif [ $probability -lt 1000 ]; then
 472                                         probability="0.$probability"
 473                                 else
 474                                         probability="1"
 475                                 fi
 476
 477                                 probability="-m statistic --mode random --probability $probability"
 478
 479                                 $IPT6 -I mwan3_policy_$policy -m mark --mark 0x0/0xff00 $probability -m comment --comment "$iface $weight $total_weight_v6" -j MARK --set-xmark $(($id*256))/0xff00
 480                         fi
 481                 fi
 482         fi
 483 }
 484
 485 mwan3_create_policies_iptables()
 486 {
 487         local last_resort lowest_metric_v4 lowest_metric_v6 total_weight_v4 total_weight_v6 policy IPT
 488
 489         policy="$1"
 490
 491         config_get last_resort $1 last_resort unreachable
 492
 493         if [ "$1" != $(echo "$1" | cut -c1-15) ]; then
 494                 $LOG warn "Policy $1 exceeds max of 15 chars. Not setting policy" && return 0
 495         fi
 496
 497         for IPT in "$IPT4" "$IPT6"; do
 498
 499                 if ! $IPT -S mwan3_policy_$1 &> /dev/null; then
 500                         $IPT -N mwan3_policy_$1
 501                 fi
 502
 503                 $IPT -F mwan3_policy_$1
 504
 505                 case "$last_resort" in
 506                         blackhole)
 507                                 $IPT -A mwan3_policy_$1 -m mark --mark 0x0/0xff00 -m comment --comment "blackhole" -j MARK --set-xmark 0xfd00/0xff00
 508                         ;;
 509                         default)
 510                                 $IPT -A mwan3_policy_$1 -m mark --mark 0x0/0xff00 -m comment --comment "default" -j MARK --set-xmark 0xff00/0xff00
 511                         ;;
 512                         *)
 513                                 $IPT -A mwan3_policy_$1 -m mark --mark 0x0/0xff00 -m comment --comment "unreachable" -j MARK --set-xmark 0xfe00/0xff00
 514                         ;;
 515                 esac
 516         done
 517
 518         lowest_metric_v4=256
 519         total_weight_v4=0
 520
 521         lowest_metric_v6=256
 522         total_weight_v6=0
 523
 524         config_list_foreach $1 use_member mwan3_set_policy
 525 }
 526
 527 mwan3_set_policies_iptables()
 528 {
 529         config_foreach mwan3_create_policies_iptables policy
 530 }
 531
 532 mwan3_set_sticky_iptables()
 533 {
 534         local id iface
 535
 536         for iface in $($IPT4 -S $policy | cut -s -d'"' -f2 | awk '{print $1}'); do
 537
 538                 if [ "$iface" == "$1" ]; then
 539
 540                         mwan3_get_iface_id id $1
 541
 542                         [ -n "$id" ] || return 0
 543
 544                         for IPT in "$IPT4" "$IPT6"; do
 545                                 if [ -n "$($IPT -S mwan3_iface_in_$1 2> /dev/null)" -a -n "$($IPT -S mwan3_iface_out_$1 2> /dev/null)" ]; then
 546                                         $IPT -I mwan3_rule_$rule -m mark --mark $(($id*256))/0xff00 -m set ! --match-set mwan3_sticky_$rule src,src -j MARK --set-xmark 0x0/0xff00
 547                                         $IPT -I mwan3_rule_$rule -m mark --mark 0/0xff00 -j MARK --set-xmark $(($id*256))/0xff00
 548                                 fi
 549                         done
 550                 fi
 551         done
 552 }
 553
 554 mwan3_set_user_iptables_rule()
 555 {
 556         local ipset family proto policy src_ip src_port sticky dest_ip dest_port use_policy timeout rule policy IPT
 557
 558         rule="$1"
 559
 560         config_get sticky $1 sticky 0
 561         config_get timeout $1 timeout 600
 562         config_get ipset $1 ipset
 563         config_get proto $1 proto all
 564         config_get src_ip $1 src_ip 0.0.0.0/0
 565         config_get src_port $1 src_port 0:65535
 566         config_get dest_ip $1 dest_ip 0.0.0.0/0
 567         config_get dest_port $1 dest_port 0:65535
 568         config_get use_policy $1 use_policy
 569         config_get family $1 family any
 570
 571         if [ "$1" != $(echo "$1" | cut -c1-15) ]; then
 572                 $LOG warn "Rule $1 exceeds max of 15 chars. Not setting rule" && return 0
 573         fi
 574
 575         if [ -n "$ipset" ]; then
 576                 ipset="-m set --match-set $ipset dst"
 577         fi
 578
 579         if [ -n "$use_policy" ]; then
 580                 if [ "$use_policy" == "default" ]; then
 581                         policy="MARK --set-xmark 0xff00/0xff00"
 582                 elif [ "$use_policy" == "unreachable" ]; then
 583                         policy="MARK --set-xmark 0xfe00/0xff00"
 584                 elif [ "$use_policy" == "blackhole" ]; then
 585                         policy="MARK --set-xmark 0xfd00/0xff00"
 586                 else
 587                         if [ "$sticky" -eq 1 ]; then
 588
 589                                 policy="mwan3_policy_$use_policy"
 590
 591                                 for IPT in "$IPT4" "$IPT6"; do
 592                                         if ! $IPT -S $policy &> /dev/null; then
 593                                                 $IPT -N $policy
 594                                         fi
 595
 596                                         if ! $IPT -S mwan3_rule_$1 &> /dev/null; then
 597                                                 $IPT -N mwan3_rule_$1
 598                                         fi
 599
 600                                         $IPT -F mwan3_rule_$1
 601                                 done
 602
 603                                 $IPS -! create mwan3_sticky_v4_$rule hash:ip,mark markmask 0xff00 timeout $timeout
 604                                 $IPS -! create mwan3_sticky_v6_$rule hash:ip,mark markmask 0xff00 timeout $timeout family inet6
 605                                 $IPS -! create mwan3_sticky_$rule list:set
 606                                 $IPS -! add mwan3_sticky_$rule mwan3_sticky_v4_$rule
 607                                 $IPS -! add mwan3_sticky_$rule mwan3_sticky_v6_$rule
 608
 609                                 config_foreach mwan3_set_sticky_iptables interface
 610
 611                                 for IPT in "$IPT4" "$IPT6"; do
 612                                         $IPT -A mwan3_rule_$1 -m mark --mark 0/0xff00 -j $policy
 613                                         $IPT -A mwan3_rule_$1 -m mark ! --mark 0xfc00/0xfc00 -j SET --del-set mwan3_sticky_$rule src,src
 614                                         $IPT -A mwan3_rule_$1 -m mark ! --mark 0xfc00/0xfc00 -j SET --add-set mwan3_sticky_$rule src,src
 615                                 done
 616
 617                                 policy="mwan3_rule_$1"
 618                         else
 619                                 policy="mwan3_policy_$use_policy"
 620
 621                                 for IPT in "$IPT4" "$IPT6"; do
 622                                         if ! $IPT -S $policy &> /dev/null; then
 623                                                 $IPT -N $policy
 624                                         fi
 625                                 done
 626
 627                         fi
 628                 fi
 629
 630                 if [ "$family" == "any" ]; then
 631
 632                         for IPT in "$IPT4" "$IPT6"; do
 633                                 case $proto in
 634                                         tcp|udp)
 635                                         $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
 636                                         ;;
 637                                         *)
 638                                         $IPT -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m mark --mark 0/0xff00 -m comment --comment "$1" -j $policy &> /dev/null
 639                                         ;;
 640                                 esac
 641                         done
 642
 643                 elif [ "$family" == "ipv4" ]; then
 644
 645                         case $proto in
 646                                 tcp|udp)
 647                                 $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
 648                                 ;;
 649                                 *)
 650                                 $IPT4 -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m mark --mark 0/0xff00 -m comment --comment "$1" -j $policy &> /dev/null
 651                                 ;;
 652                         esac
 653
 654                 elif [ "$family" == "ipv6" ]; then
 655
 656                         case $proto in
 657                                 tcp|udp)
 658                                 $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
 659                                 ;;
 660                                 *)
 661                                 $IPT6 -A mwan3_rules -p $proto -s $src_ip -d $dest_ip $ipset -m mark --mark 0/0xff00 -m comment --comment "$1" -j $policy &> /dev/null
 662                                 ;;
 663                         esac
 664                 fi
 665         fi
 666 }
 667
 668 mwan3_set_user_rules()
 669 {
 670         local IPT
 671
 672         for IPT in "$IPT4" "$IPT6"; do
 673
 674                 if ! $IPT -S mwan3_rules &> /dev/null; then
 675                         $IPT -N mwan3_rules
 676                 fi
 677
 678                 $IPT -F mwan3_rules
 679         done
 680
 681         config_foreach mwan3_set_user_iptables_rule rule
 682 }
 683
 684 mwan3_report_iface_status()
 685 {
 686         local device result track_ips tracking IP IPT
 687
 688         mwan3_get_iface_id id $1
 689         network_get_device device $1
 690         config_get enabled "$1" enabled 0
 691         config_get family "$1" family ipv4
 692
 693         if [ "$family" == "ipv4" ]; then
 694                 IP="$IP4"
 695                 IPT="$IPT4"
 696         fi
 697
 698         if [ "$family" == "ipv6" ]; then
 699                 IP="$IP6"
 700                 IPT="$IPT6"
 701         fi
 702
 703         if [ -z "$id" -o -z "$device" ]; then
 704                 result="unknown"
 705         elif [ -n "$($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 $device 2> /dev/null)" ]; then
 706                 result="online"
 707         elif [ -n "$($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 $device 2> /dev/null)" ]; then
 708                 result="error"
 709         else
 710                 if [ "$enabled" == "1" ]; then
 711                         result="offline"
 712                 else
 713                         result="disabled"
 714                 fi
 715         fi
 716
 717         mwan3_list_track_ips()
 718         {
 719                 track_ips="$1 $track_ips"
 720         }
 721         config_list_foreach $1 track_ip mwan3_list_track_ips
 722
 723         if [ -n "$track_ips" ]; then
 724                 if [ -n "$(ps -w | grep mwan3track | grep -v grep | sed '/.*\/usr\/sbin\/mwan3track \([^ ]*\) .*$/!d;s//\1/' | awk '$1 == "'$1'"')" ]; then
 725                         tracking="active"
 726                 else
 727                         tracking="down"
 728                 fi
 729         else
 730                 tracking="not enabled"
 731         fi
 732
 733         echo " interface $1 is $result and tracking is $tracking"
 734 }
 735
 736 mwan3_report_policies_v4()
 737 {
 738         local percent policy share total_weight weight iface
 739
 740         for policy in $($IPT4 -S | awk '{print $2}' | grep mwan3_policy_ | sort -u); do
 741                 echo "$policy:" | sed 's/mwan3_policy_//'
 742
 743                 [ -n "$total_weight" ] || total_weight=$($IPT4 -S $policy | cut -s -d'"' -f2 | head -1 | awk '{print $3}')
 744
 745                 if [ ! -z "${total_weight##*[!0-9]*}" ]; then
 746                         for iface in $($IPT4 -S $policy | cut -s -d'"' -f2 | awk '{print $1}'); do
 747                                 weight=$($IPT4 -S $policy | cut -s -d'"' -f2 | awk '$1 == "'$iface'"' | awk '{print $2}')
 748                                 percent=$(($weight*100/$total_weight))
 749                                 echo " $iface ($percent%)"
 750                         done
 751                 else
 752                         echo " $($IPT4 -S $policy | sed '/.*--comment \([^ ]*\) .*$/!d;s//\1/;q')"
 753                 fi
 754
 755                 unset total_weight
 756
 757                 echo -e
 758         done
 759 }
 760
 761 mwan3_report_policies_v6()
 762 {
 763         local percent policy share total_weight weight iface
 764
 765         for policy in $($IPT6 -S | awk '{print $2}' | grep mwan3_policy_ | sort -u); do
 766                 echo "$policy:" | sed 's/mwan3_policy_//'
 767
 768                 [ -n "$total_weight" ] || total_weight=$($IPT6 -S $policy | cut -s -d'"' -f2 | head -1 | awk '{print $3}')
 769
 770                 if [ ! -z "${total_weight##*[!0-9]*}" ]; then
 771                         for iface in $($IPT6 -S $policy | cut -s -d'"' -f2 | awk '{print $1}'); do
 772                                 weight=$($IPT6 -S $policy | cut -s -d'"' -f2 | awk '$1 == "'$iface'"' | awk '{print $2}')
 773                                 percent=$(($weight*100/$total_weight))
 774                                 echo " $iface ($percent%)"
 775                         done
 776                 else
 777                         echo " $($IPT6 -S $policy | sed '/.*--comment \([^ ]*\) .*$/!d;s//\1/;q')"
 778                 fi
 779
 780                 unset total_weight
 781
 782                 echo -e
 783         done
 784 }
 785
 786 mwan3_report_connected_v4()
 787 {
 788         local address
 789
 790         if [ -n "$($IPT4 -S mwan3_connected 2> /dev/null)" ]; then
 791                 for address in $($IPS list mwan3_connected_v4 | egrep '[0-9]{1,3}(\.[0-9]{1,3}){3}'); do
 792                         echo " $address"
 793                 done
 794         fi
 795 }
 796
 797 mwan3_report_connected_v6()
 798 {
 799         local address
 800
 801         if [ -n "$($IPT6 -S mwan3_connected 2> /dev/null)" ]; then
 802                 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
 803                         echo " $address"
 804                 done
 805         fi
 806 }
 807
 808 mwan3_report_rules_v4()
 809 {
 810         if [ -n "$($IPT4 -S mwan3_rules 2> /dev/null)" ]; then
 811                 $IPT4 -L mwan3_rules -n -v 2> /dev/null | tail -n+3 | sed 's/mark.*//' | sed 's/mwan3_policy_/- /' | sed 's/mwan3_rule_/S /'
 812         fi
 813 }
 814
 815 mwan3_report_rules_v6()
 816 {
 817         if [ -n "$($IPT6 -S mwan3_rules 2> /dev/null)" ]; then
 818                 $IPT6 -L mwan3_rules -n -v 2> /dev/null | tail -n+3 | sed 's/mark.*//' | sed 's/mwan3_policy_/- /' | sed 's/mwan3_rule_/S /'
 819         fi
 820 }
 821
 822 mwan3_flush_conntrack()
 823 {
 824         local flush_conntrack
 825
 826         config_get flush_conntrack $1 flush_conntrack never
 827
 828         if [ -e "$CONNTRACK_FILE" ]; then
 829                 case $flush_conntrack in
 830                         ifup)
 831                                 [ "$3" = "ifup" ] && {
 832                                         echo f > ${CONNTRACK_FILE}
 833                                         $LOG info "connection tracking flushed on interface $1 ($2) $3"
 834                                 }
 835                                 ;;
 836                         ifdown)
 837                                 [ "$3" = "ifdown" ] && {
 838                                         echo f > ${CONNTRACK_FILE}
 839                                         $LOG info "connection tracking flushed on interface $1 ($2) $3"
 840                                 }
 841                                 ;;
 842                         always)
 843                                 echo f > ${CONNTRACK_FILE}
 844                                 $LOG info "connection tracking flushed on interface $1 ($2) $3"
 845                                 ;;
 846                         never)
 847                                 $LOG info "connection tracking not flushed on interface $1 ($2) $3"
 848                                 ;;
 849                 esac
 850         else
 851                 $LOG warning "connection tracking not enabled"
 852         fi
 853 }