package/network/config/gre/files/gre.sh

   1 #!/bin/sh
   2
   3 [ -n "$INCLUDE_ONLY" ] || {
   4         . /lib/functions.sh
   5         . /lib/functions/network.sh
   6         . ../netifd-proto.sh
   7         init_proto "$@"
   8 }
   9
  10 gre_generic_setup() {
  11         local cfg="$1"
  12         local mode="$2"
  13         local local="$3"
  14         local remote="$4"
  15         local link="$5"
  16         local mtu ttl tos zone ikey okey icsum ocsum iseqno oseqno multicast
  17         json_get_vars mtu ttl tos zone ikey okey icsum ocsum iseqno oseqno multicast
  18
  19         [ -z "$zone" ] && zone="wan"
  20         [ -z "$multicast" ] && multicast=1
  21
  22         proto_init_update "$link" 1
  23
  24         proto_add_tunnel
  25         json_add_string mode "$mode"
  26         json_add_int mtu "${mtu:-1280}"
  27         [ -n "$df" ] && json_add_boolean df "$df"
  28         [ -n "$ttl" ] && json_add_int ttl "$ttl"
  29         [ -n "$tos" ] && json_add_string tos "$tos"
  30         json_add_boolean multicast "$multicast"
  31         json_add_string local "$local"
  32         json_add_string remote "$remote"
  33         [ -n "$tunlink" ] && json_add_string link "$tunlink"
  34
  35         json_add_object 'data'
  36         [ -n "$ikey" ] && json_add_int ikey "$ikey"
  37         [ -n "$okey" ] && json_add_int okey "$okey"
  38         [ -n "$icsum" ] && json_add_boolean icsum "$icsum"
  39         [ -n "$ocsum" ] && json_add_boolean ocsum "$ocsum"
  40         [ -n "$iseqno" ] && json_add_boolean iseqno "$iseqno"
  41         [ -n "$oseqno" ] && json_add_boolean oseqno "$oseqno"
  42         [ -n "$encaplimit" ] && json_add_string encaplimit "$encaplimit"
  43         json_close_object
  44
  45         proto_close_tunnel
  46
  47         proto_add_data
  48         [ -n "$zone" ] && json_add_string zone "$zone"
  49         proto_close_data
  50
  51         proto_send_update "$cfg"
  52 }
  53
  54 gre_setup() {
  55         local cfg="$1"
  56         local mode="$2"
  57         local remoteip
  58
  59         local ipaddr peeraddr
  60         json_get_vars df ipaddr peeraddr tunlink
  61
  62         [ -z "$peeraddr" ] && {
  63                 proto_notify_error "$cfg" "MISSING_PEER_ADDRESS"
  64                 proto_block_restart "$cfg"
  65                 exit
  66         }
  67
  68         remoteip=$(resolveip -t 10 -4 "$peeraddr")
  69
  70         if [ -z "$remoteip" ]; then
  71                 proto_notify_error "$cfg" "PEER_RESOLVE_FAIL"
  72                 exit
  73         fi
  74
  75         for ip in $remoteip; do
  76                 peeraddr=$ip
  77                 break
  78         done
  79
  80         ( proto_add_host_dependency "$cfg" "$peeraddr" "$tunlink" )
  81
  82         [ -z "$ipaddr" ] && {
  83                 local wanif="$tunlink"
  84                 if [ -z $wanif ] && ! network_find_wan wanif; then
  85                         proto_notify_error "$cfg" "NO_WAN_LINK"
  86                         exit
  87                 fi
  88
  89                 if ! network_get_ipaddr ipaddr "$wanif"; then
  90                         proto_notify_error "$cfg" "NO_WAN_LINK"
  91                         exit
  92                 fi
  93         }
  94
  95         [ -z "$df" ] && df="1"
  96
  97         case "$mode" in
  98                 gretapip)
  99                         gre_generic_setup $cfg $mode $ipaddr $peeraddr "gre4t-$cfg"
 100                         ;;
 101                 *)
 102                         gre_generic_setup $cfg $mode $ipaddr $peeraddr "gre4-$cfg"
 103                         ;;
 104         esac
 105 }
 106
 107 proto_gre_setup() {
 108         local cfg="$1"
 109
 110         gre_setup $cfg "greip"
 111 }
 112
 113 proto_gretap_setup() {
 114         local cfg="$1"
 115
 116         local network
 117         json_get_vars network
 118
 119         gre_setup $cfg "gretapip"
 120
 121         json_init
 122         json_add_string name "gre4t-$cfg"
 123         json_add_boolean link-ext 0
 124         json_close_object
 125
 126         for i in $network; do
 127                 ubus call network.interface."$i" add_device "$(json_dump)"
 128         done
 129 }
 130
 131 grev6_setup() {
 132         local cfg="$1"
 133         local mode="$2"
 134         local remoteip6
 135
 136         local ip6addr peer6addr weakif
 137         json_get_vars ip6addr peer6addr tunlink weakif encaplimit
 138
 139         [ -z "$peer6addr" ] && {
 140                 proto_notify_error "$cfg" "MISSING_PEER_ADDRESS"
 141                 proto_block_restart "$cfg"
 142                 exit
 143         }
 144
 145         remoteip6=$(resolveip -t 10 -6 "$peer6addr")
 146
 147         if [ -z "$remoteip6" ]; then
 148                 proto_notify_error "$cfg" "PEER_RESOLVE_FAIL"
 149                 exit
 150         fi
 151
 152         for ip6 in $remoteip6; do
 153                 peer6addr=$ip6
 154                 break
 155         done
 156
 157         ( proto_add_host_dependency "$cfg" "$peer6addr" "$tunlink" )
 158
 159         [ -z "$ip6addr" ] && {
 160                 local wanif="$tunlink"
 161                 if [ -z $wanif ] && ! network_find_wan6 wanif; then
 162                         proto_notify_error "$cfg" "NO_WAN_LINK"
 163                         exit
 164                 fi
 165
 166                 if ! network_get_ipaddr6 ip6addr "$wanif"; then
 167                         [ -z "$weakif" ] && weakif="lan"
 168                         if ! network_get_ipaddr6 ip6addr "$weakif"; then
 169                                 proto_notify_error "$cfg" "NO_WAN_LINK"
 170                                 exit
 171                         fi
 172                 fi
 173         }
 174
 175         case "$mode" in
 176                 gretapip6)
 177                         gre_generic_setup $cfg $mode $ip6addr $peer6addr "gre6t-$cfg"
 178                         ;;
 179                 *)
 180                         gre_generic_setup $cfg $mode $ip6addr $peer6addr "gre6-$cfg"
 181                         ;;
 182         esac
 183 }
 184
 185 proto_grev6_setup() {
 186         local cfg="$1"
 187
 188         grev6_setup $cfg "greip6"
 189 }
 190
 191 proto_grev6tap_setup() {
 192         local cfg="$1"
 193
 194         local network
 195         json_get_vars network
 196
 197         grev6_setup $cfg "gretapip6"
 198
 199         json_init
 200         json_add_string name "gre6t-$cfg"
 201         json_add_boolean link-ext 0
 202         json_close_object
 203
 204         for i in $network; do
 205                 ubus call network.interface."$i" add_device "$(json_dump)"
 206         done
 207 }
 208
 209 gretap_generic_teardown() {
 210         local network
 211         json_get_vars network
 212
 213         json_init
 214         json_add_string name "$1"
 215         json_add_boolean link-ext 0
 216         json_close_object
 217
 218         for i in $network; do
 219                 ubus call network.interface."$i" remove_device "$(json_dump)"
 220         done
 221 }
 222
 223 proto_gre_teardown() {
 224         local cfg="$1"
 225 }
 226
 227 proto_gretap_teardown() {
 228         local cfg="$1"
 229
 230         gretap_generic_teardown "gre4t-$cfg"
 231 }
 232
 233 proto_grev6_teardown() {
 234         local cfg="$1"
 235 }
 236
 237 proto_grev6tap_teardown() {
 238         local cfg="$1"
 239
 240         gretap_generic_teardown "gre6t-$cfg"
 241 }
 242
 243 gre_generic_init_config() {
 244         no_device=1
 245         available=1
 246
 247         proto_config_add_int "mtu"
 248         proto_config_add_int "ttl"
 249         proto_config_add_string "tos"
 250         proto_config_add_string "tunlink"
 251         proto_config_add_string "zone"
 252         proto_config_add_int "ikey"
 253         proto_config_add_int "okey"
 254         proto_config_add_boolean "icsum"
 255         proto_config_add_boolean "ocsum"
 256         proto_config_add_boolean "iseqno"
 257         proto_config_add_boolean "oseqno"
 258         proto_config_add_boolean "multicast"
 259 }
 260
 261 proto_gre_init_config() {
 262         gre_generic_init_config
 263         proto_config_add_string "ipaddr"
 264         proto_config_add_string "peeraddr"
 265         proto_config_add_boolean "df"
 266 }
 267
 268 proto_gretap_init_config() {
 269         proto_gre_init_config
 270         proto_config_add_string "network"
 271 }
 272
 273 proto_grev6_init_config() {
 274         gre_generic_init_config
 275         proto_config_add_string "ip6addr"
 276         proto_config_add_string "peer6addr"
 277         proto_config_add_string "weakif"
 278         proto_config_add_string "encaplimit"
 279 }
 280
 281 proto_grev6tap_init_config() {
 282         proto_grev6_init_config
 283         proto_config_add_string "network"
 284 }
 285
 286 [ -n "$INCLUDE_ONLY" ] || {
 287         [ -f /lib/modules/$(uname -r)/gre.ko ] && add_protocol gre
 288         [ -f /lib/modules/$(uname -r)/gre.ko ] && add_protocol gretap
 289         [ -f /lib/modules/$(uname -r)/ip6_gre.ko ] && add_protocol grev6
 290         [ -f /lib/modules/$(uname -r)/ip6_gre.ko ] && add_protocol grev6tap
 291 }