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         json_add_string info "${ikey:-0},${okey:-0},${icsum:-0},${ocsum:-0},${iseqno:-0},${oseqno:-0}"
  35         proto_close_tunnel
  36
  37         proto_add_data
  38         [ -n "$zone" ] && json_add_string zone "$zone"
  39         proto_close_data
  40
  41         proto_send_update "$cfg"
  42 }
  43
  44 gre_setup() {
  45         local cfg="$1"
  46         local mode="$2"
  47         local remoteip
  48
  49         local ipaddr peeraddr
  50         json_get_vars df ipaddr peeraddr tunlink
  51
  52         [ -z "$peeraddr" ] && {
  53                 proto_notify_error "$cfg" "MISSING_PEER_ADDRESS"
  54                 proto_block_restart "$cfg"
  55                 exit
  56         }
  57
  58         remoteip=$(resolveip -t 10 -4 "$peeraddr")
  59
  60         if [ -z "$remoteip" ]; then
  61                 proto_notify_error "$cfg" "PEER_RESOLVE_FAIL"
  62                 exit
  63         fi
  64
  65         for ip in $remoteip; do
  66                 peeraddr=$ip
  67                 break
  68         done
  69
  70         ( proto_add_host_dependency "$cfg" "$peeraddr" "$tunlink" )
  71
  72         [ -z "$ipaddr" ] && {
  73                 local wanif="$tunlink"
  74                 if [ -z $wanif ] && ! network_find_wan wanif; then
  75                         proto_notify_error "$cfg" "NO_WAN_LINK"
  76                         exit
  77                 fi
  78
  79                 if ! network_get_ipaddr ipaddr "$wanif"; then
  80                         proto_notify_error "$cfg" "NO_WAN_LINK"
  81                         exit
  82                 fi
  83         }
  84
  85         [ -z "$df" ] && df="1"
  86
  87         case "$mode" in
  88                 gretapip)
  89                         gre_generic_setup $cfg $mode $ipaddr $peeraddr "gre4t-$cfg"
  90                         ;;
  91                 *)
  92                         gre_generic_setup $cfg $mode $ipaddr $peeraddr "gre4-$cfg"
  93                         ;;
  94         esac
  95 }
  96
  97 proto_gre_setup() {
  98         local cfg="$1"
  99
 100         gre_setup $cfg "greip"
 101 }
 102
 103 proto_gretap_setup() {
 104         local cfg="$1"
 105
 106         local network
 107         json_get_vars network
 108
 109         gre_setup $cfg "gretapip"
 110
 111         json_init
 112         json_add_string name "gre4t-$cfg"
 113         json_add_boolean link-ext 0
 114         json_close_object
 115
 116         for i in $network; do
 117                 ubus call network.interface."$i" add_device "$(json_dump)"
 118         done
 119 }
 120
 121 grev6_setup() {
 122         local cfg="$1"
 123         local mode="$2"
 124         local remoteip6
 125
 126         local ip6addr peer6addr weakif
 127         json_get_vars ip6addr peer6addr tunlink weakif
 128
 129         [ -z "$peer6addr" ] && {
 130                 proto_notify_error "$cfg" "MISSING_PEER_ADDRESS"
 131                 proto_block_restart "$cfg"
 132                 exit
 133         }
 134
 135         remoteip6=$(resolveip -t 10 -6 "$peer6addr")
 136
 137         if [ -z "$remoteip6" ]; then
 138                 proto_notify_error "$cfg" "PEER_RESOLVE_FAIL"
 139                 exit
 140         fi
 141
 142         for ip6 in $remoteip6; do
 143                 peer6addr=$ip6
 144                 break
 145         done
 146
 147         ( proto_add_host_dependency "$cfg" "$peer6addr" "$tunlink" )
 148
 149         [ -z "$ip6addr" ] && {
 150                 local wanif="$tunlink"
 151                 if [ -z $wanif ] && ! network_find_wan6 wanif; then
 152                         proto_notify_error "$cfg" "NO_WAN_LINK"
 153                         exit
 154                 fi
 155
 156                 if ! network_get_ipaddr6 ip6addr "$wanif"; then
 157                         [ -z "$weakif" ] && weakif="lan"
 158                         if ! network_get_ipaddr6 ip6addr "$weakif"; then
 159                                 proto_notify_error "$cfg" "NO_WAN_LINK"
 160                                 exit
 161                         fi
 162                 fi
 163         }
 164
 165         case "$mode" in
 166                 gretapip6)
 167                         gre_generic_setup $cfg $mode $ip6addr $peer6addr "gre6t-$cfg"
 168                         ;;
 169                 *)
 170                         gre_generic_setup $cfg $mode $ip6addr $peer6addr "gre6-$cfg"
 171                         ;;
 172         esac
 173 }
 174
 175 proto_grev6_setup() {
 176         local cfg="$1"
 177
 178         grev6_setup $cfg "greip6"
 179 }
 180
 181 proto_grev6tap_setup() {
 182         local cfg="$1"
 183
 184         local network
 185         json_get_vars network
 186
 187         grev6_setup $cfg "gretapip6"
 188
 189         json_init
 190         json_add_string name "gre6t-$cfg"
 191         json_add_boolean link-ext 0
 192         json_close_object
 193
 194         for i in $network; do
 195                 ubus call network.interface."$i" add_device "$(json_dump)"
 196         done
 197 }
 198
 199 gretap_generic_teardown() {
 200         local network
 201         json_get_vars network
 202
 203         json_init
 204         json_add_string name "$1"
 205         json_add_boolean link-ext 0
 206         json_close_object
 207
 208         for i in $network; do
 209                 ubus call network.interface."$i" remove_device "$(json_dump)"
 210         done
 211 }
 212
 213 proto_gre_teardown() {
 214         local cfg="$1"
 215 }
 216
 217 proto_gretap_teardown() {
 218         local cfg="$1"
 219
 220         gretap_generic_teardown "gre4t-$cfg"
 221 }
 222
 223 proto_grev6_teardown() {
 224         local cfg="$1"
 225 }
 226
 227 proto_grev6tap_teardown() {
 228         local cfg="$1"
 229
 230         gretap_generic_teardown "gre6t-$cfg"
 231 }
 232
 233 gre_generic_init_config() {
 234         no_device=1
 235         available=1
 236
 237         proto_config_add_int "mtu"
 238         proto_config_add_int "ttl"
 239         proto_config_add_string "tos"
 240         proto_config_add_string "tunlink"
 241         proto_config_add_string "zone"
 242         proto_config_add_int "ikey"
 243         proto_config_add_int "okey"
 244         proto_config_add_boolean "icsum"
 245         proto_config_add_boolean "ocsum"
 246         proto_config_add_boolean "iseqno"
 247         proto_config_add_boolean "oseqno"
 248         proto_config_add_boolean "multicast"
 249 }
 250
 251 proto_gre_init_config() {
 252         gre_generic_init_config
 253         proto_config_add_string "ipaddr"
 254         proto_config_add_string "peeraddr"
 255         proto_config_add_boolean "df"
 256 }
 257
 258 proto_gretap_init_config() {
 259         proto_gre_init_config
 260         proto_config_add_string "network"
 261 }
 262
 263 proto_grev6_init_config() {
 264         gre_generic_init_config
 265         proto_config_add_string "ip6addr"
 266         proto_config_add_string "peer6addr"
 267         proto_config_add_string "weakif"
 268 }
 269
 270 proto_grev6tap_init_config() {
 271         proto_grev6_init_config
 272         proto_config_add_string "network"
 273 }
 274
 275 [ -n "$INCLUDE_ONLY" ] || {
 276         [ -f /lib/modules/$(uname -r)/gre.ko ] && add_protocol gre
 277         [ -f /lib/modules/$(uname -r)/gre.ko ] && add_protocol gretap
 278         [ -f /lib/modules/$(uname -r)/ip6_gre.ko ] && add_protocol grev6
 279         [ -f /lib/modules/$(uname -r)/ip6_gre.ko ] && add_protocol grev6tap
 280 }