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-rwxr-xr-xpackage/6to4/files.old/6to4.sh273
1 files changed, 273 insertions, 0 deletions
diff --git a/package/6to4/files.old/6to4.sh b/package/6to4/files.old/6to4.sh
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+# 6to4.sh - IPv6-in-IPv4 tunnel backend
+# Copyright (c) 2010-2011 OpenWrt.org
+
+find_6to4_wanif() {
+ local if=$(ip -4 r l e 0.0.0.0/0); if="${if#default* dev }"; if="${if%% *}"
+ [ -n "$if" ] && grep -qs "^ *$if:" /proc/net/dev && echo "$if"
+}
+
+find_6to4_wanip() {
+ local ip=$(ip -4 a s dev "$1"); ip="${ip#*inet }"
+ echo "${ip%%[^0-9.]*}"
+}
+
+find_6to4_prefix() {
+ local ip4="$1"
+ local oIFS="$IFS"; IFS="."; set -- $ip4; IFS="$oIFS"
+
+ printf "2002:%02x%02x:%02x%02x\n" $1 $2 $3 $4
+}
+
+test_6to4_rfc1918()
+{
+ local oIFS="$IFS"; IFS="."; set -- $1; IFS="$oIFS"
+ [ $1 -eq 10 ] && return 0
+ [ $1 -eq 192 ] && [ $2 -eq 168 ] && return 0
+ [ $1 -eq 172 ] && [ $2 -ge 16 ] && [ $2 -le 31 ] && return 0
+ return 1
+}
+
+set_6to4_radvd_interface() {
+ local cfgid="$1"
+ local lanif="${2:-lan}"
+ local ifmtu="${3:-1280}"
+ local ifsection=""
+
+ find_ifsection() {
+ local net
+ local cfg="$1"
+ config_get net "$cfg" interface
+
+ [ "$net" = "$lanif" ] && {
+ ifsection="$cfg"
+ return 1
+ }
+ }
+
+ config_foreach find_ifsection interface
+
+ [ -z "$ifsection" ] && {
+ ifsection="iface_$sid"
+ uci_set_state radvd "$ifsection" "" interface
+ uci_set_state radvd "$ifsection" interface "$lanif"
+ }
+
+ uci_set_state radvd "$ifsection" ignore 0
+ uci_set_state radvd "$ifsection" IgnoreIfMissing 1
+ uci_set_state radvd "$ifsection" AdvSendAdvert 1
+ uci_set_state radvd "$ifsection" MaxRtrAdvInterval 30
+ uci_set_state radvd "$ifsection" AdvLinkMTU "$ifmtu"
+}
+
+set_6to4_radvd_prefix() {
+ local cfgid="$1"
+ local lanif="${2:-lan}"
+ local wanif="${3:-wan}"
+ local prefix="${4:-0:0:0:1::/64}"
+ local vlt="${5:-300}"
+ local plt="${6:-120}"
+ local pfxsection=""
+
+ find_pfxsection() {
+ local net base
+ local cfg="$1"
+ config_get net "$cfg" interface
+ config_get base "$cfg" Base6to4Interface
+
+ [ "$net" = "$lanif" ] && [ "$base" = "$wanif" ] && {
+ pfxsection="$cfg"
+ return 1
+ }
+ }
+
+ config_foreach find_pfxsection prefix
+
+ [ -z "$pfxsection" ] && {
+ pfxsection="prefix_${sid}_${lanif}"
+ uci_set_state radvd "$pfxsection" "" prefix
+ uci_set_state radvd "$pfxsection" ignore 0
+ uci_set_state radvd "$pfxsection" interface "$lanif"
+ uci_set_state radvd "$pfxsection" prefix "$prefix"
+ uci_set_state radvd "$pfxsection" AdvOnLink 1
+ uci_set_state radvd "$pfxsection" AdvAutonomous 1
+ uci_set_state radvd "$pfxsection" AdvValidLifetime "$vlt"
+ uci_set_state radvd "$pfxsection" AdvPreferredLifetime "$plt"
+ uci_set_state radvd "$pfxsection" Base6to4Interface "$wanif"
+ }
+}
+
+
+# Hook into scan_interfaces() to synthesize a .device option
+# This is needed for /sbin/ifup to properly dispatch control
+# to setup_interface_6to4() even if no .ifname is set in
+# the configuration.
+scan_6to4() {
+ config_set "$1" device "6to4-$1"
+}
+
+coldplug_interface_6to4() {
+ setup_interface_6to4 "6to4-$1" "$1"
+}
+
+setup_interface_6to4() {
+ local iface="$1"
+ local cfg="$2"
+ local link="6to4-$cfg"
+
+ local local4=$(uci_get network "$cfg" ipaddr)
+
+ local mtu
+ config_get mtu "$cfg" mtu
+
+ local ttl
+ config_get ttl "$cfg" ttl
+
+ local metric
+ config_get metric "$cfg" metric
+
+ local defaultroute
+ config_get_bool defaultroute "$cfg" defaultroute 1
+
+ local wanif=$(find_6to4_wanif)
+ [ -z "$wanif" ] && {
+ logger -t "$link" "Cannot find wan interface - aborting"
+ return
+ }
+
+ local wancfg=$(find_config "$wanif")
+ [ -z "$wancfg" ] && {
+ logger -t "$link" "Cannot find wan network - aborting"
+ return
+ }
+
+ # If local4 is unset, guess local IPv4 address from the
+ # interface used by the default route.
+ [ -z "$local4" ] && {
+ [ -n "$wanif" ] && {
+ local4=$(find_6to4_wanip "$wanif")
+ uci_set_state network "$cfg" wan_device "$wanif"
+ }
+ }
+
+ test_6to4_rfc1918 "$local4" && {
+ logger -t "$link" "Local wan ip $local4 is private - aborting"
+ return
+ }
+
+ [ -n "$local4" ] && {
+ logger -t "$link" "Starting ..."
+
+ # creating the tunnel below will trigger a net subsystem event
+ # prevent it from touching or iface by disabling .auto here
+ uci_set_state network "$cfg" ifname $link
+ uci_set_state network "$cfg" auto 0
+
+ # find our local prefix
+ local prefix6=$(find_6to4_prefix "$local4")
+ local local6="$prefix6::1/16"
+
+ logger -t "$link" " * IPv4 address is $local4"
+ logger -t "$link" " * IPv6 address is $local6"
+ ip tunnel add $link mode sit remote any local $local4 ttl ${ttl:-64}
+ ip link set $link up
+ ip link set mtu ${mtu:-1280} dev $link
+ ip addr add $local6 dev $link
+
+ uci_set_state network "$cfg" ipaddr $local4
+ uci_set_state network "$cfg" ip6addr $local6
+
+ [ "$defaultroute" = 1 ] && {
+ logger -t "$link" " * Adding default route"
+ ip -6 route add ::/0 via ::192.88.99.1 metric ${metric:-1} dev $link
+ uci_set_state network "$cfg" defaultroute 1
+ }
+
+ [ -f /etc/config/radvd ] && /etc/init.d/radvd enabled && {
+ local sid="6to4_$cfg"
+
+ uci_revert_state radvd
+ config_load radvd
+
+ # find delegation target
+ local adv_interface
+ config_get adv_interface "$cfg" adv_interface
+
+ local adv_subnet=$(uci_get network "$cfg" adv_subnet)
+ adv_subnet=$((0x${adv_subnet:-1}))
+
+ local adv_subnets=""
+
+ for adv_interface in ${adv_interface:-lan}; do
+ local adv_ifname
+ config_get adv_ifname "${adv_interface:-lan}" ifname
+
+ grep -qs "^ *$adv_ifname:" /proc/net/dev && {
+ local adv_valid_lifetime adv_preferred_lifetime
+ config_get adv_valid_lifetime "$cfg" adv_valid_lifetime
+ config_get adv_preferred_lifetime "$cfg" adv_preferred_lifetime
+
+ local subnet6="$(printf "%s:%x::1/64" "$prefix6" $adv_subnet)"
+
+ logger -t "$link" " * Advertising IPv6 subnet $subnet6 on ${adv_interface:-lan} ($adv_ifname)"
+ ip -6 addr add $subnet6 dev $adv_ifname
+
+ set_6to4_radvd_interface "$sid" "$adv_interface" "$mtu"
+ set_6to4_radvd_prefix "$sid" "$adv_interface" \
+ "$wancfg" "$(printf "0:0:0:%x::/64" $adv_subnet)" \
+ "$adv_valid_lifetime" "$adv_preferred_lifetime"
+
+ adv_subnets="${adv_subnets:+$adv_subnets }$adv_ifname:$subnet6"
+ adv_subnet=$(($adv_subnet + 1))
+ }
+ done
+
+ uci_set_state network "$cfg" adv_subnets "$adv_subnets"
+
+ /etc/init.d/radvd restart
+ }
+
+ logger -t "$link" "... started"
+
+ env -i ACTION="ifup" INTERFACE="$cfg" DEVICE="$link" PROTO=6to4 /sbin/hotplug-call "iface" &
+ } || {
+ echo "Cannot determine local IPv4 address for 6to4 tunnel $cfg - skipping"
+ }
+}
+
+stop_interface_6to4() {
+ local cfg="$1"
+ local link="6to4-$cfg"
+
+ local local6=$(uci_get_state network "$cfg" ip6addr)
+ local defaultroute=$(uci_get_state network "$cfg" defaultroute)
+
+ local adv_subnets=$(uci_get_state network "$cfg" adv_subnets)
+
+ grep -qs "^ *$link:" /proc/net/dev && {
+ logger -t "$link" "Shutting down ..."
+ env -i ACTION="ifdown" INTERFACE="$cfg" DEVICE="$link" PROTO=6to4 /sbin/hotplug-call "iface" &
+
+ [ -n "$adv_subnets" ] && {
+ uci_revert_state radvd
+ /etc/init.d/radvd enabled && /etc/init.d/radvd restart
+
+ local adv_subnet
+ for adv_subnet in $adv_subnets; do
+ local ifname="${adv_subnet%%:*}"
+ local subnet="${adv_subnet#*:}"
+
+ logger -t "$link" " * Removing IPv6 subnet $subnet from interface $ifname"
+ ip -6 addr del $subnet dev $ifname
+ done
+ }
+
+ [ "$defaultroute" = "1" ] && \
+ ip -6 route del ::/0 via ::192.88.99.1 dev $link
+
+ ip addr del $local6 dev $link
+ ip link set $link down
+ ip tunnel del $link
+
+ logger -t "$link" "... stopped"
+ }
+}
generated by cgit v1.1 at 2024-12-27 13:01:23 +0000