diff options
Diffstat (limited to 'net/ip6rd.sh')
| -rw-r--r-- | net/ip6rd.sh | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/net/ip6rd.sh b/net/ip6rd.sh deleted file mode 100644 index a35e2b76..00000000 --- a/net/ip6rd.sh +++ /dev/null @@ -1,175 +0,0 @@ -# Copyright (c) 2011 by Gentoo Foundation -# Released under the 2-clause BSD license. - -_config_vars="$_config_vars link prefix suffix ipv4mask relay" - -ip6rd_depend() -{ - program ip - after interface -} - -ip6rd_pre_start() -{ - # ALL interfaces run pre_start blocks, not just those with something - # assigned, so we must check if we need to run on this interface before we - # do so. - local config - eval config=\$config_${IFVAR} - [ "$config" = "ip6rd" ] || return 0 - - case "${MODULES}" in - *" ifconfig "*) - eerror "ifconfig is not supported for 6rd" - eerror "Please emerge sys-apps/iproute2" - return 1 - ;; - esac - - local host= suffix= relay= addr= iface=${IFACE} config_ip6rd= localip= ipv4mask= - eval host=\$link_${IFVAR} - if [ -z "${host}" ]; then - eerror "link_${IFVAR} not set" - return 1 - fi - - eval host=\${link_${IFVAR}} - eval ipv4mask=\${ipv4mask_${IFVAR}:-0} - eval suffix=\${suffix_${IFVAR}:-1} - eval relay=\${relay_${IFVAR}} - eval prefix=\${prefix_${IFVAR}} - - IFACE=${host} - addrs=$(_get_inet_addresses) - IFACE=${iface} - if [ -z "${addrs}" ]; then - eerror "${host} is not configured with an IPv4 address" - return 1 - fi - # TODO: Get this settings from DHCP (Option 212) - if [ -z "${prefix}" ]; then - eerror "prefix_${IFVAR} not set" - return 1 - fi - if [ -z "${relay}" ]; then - eerror "relay_${IFVAR} not set" - return 1 - fi - for addr in ${addrs}; do - # Strip the subnet - local ip="${addr%/*}" subnet="${addr#*/}" - # We don't work on private IPv4 addresses - if _ip6rd_inet_is_private_network "${ip}" - then - continue - fi - - local ip6= ip6_prefix="${prefix%::/*}" ip6_subnet="${prefix#*/}" - ip6_subnet=$((ip6_subnet + (32-ipv4mask))) - eval ip6="$(printf "${ip6_prefix}:%s::%s" \ - $(_ip6rd_prefix_shave_bits ${ip} ${ipv4mask}) ${suffix})" - veinfo "Derived IPv6 address: ${ip6}" - - # Now apply our IPv6 address to our config - config_ip6rd="${config_ip6rd}${config_ip6rd:+ }${ip6}/${ip6_subnet}" - - if [ -n "${localip}" ]; then - localip="any" - else - localip="${ip}" - fi - done - - if [ -z "${config_ip6rd}" ]; then - eerror "No global IPv4 addresses found on interface ${host}" - return 1 - fi - - ebegin "Creating 6rd tunnel ${IFACE}" - if [ "${IFACE}" != "sit0" ]; then - _tunnel add "${IFACE}" mode sit ttl 255 remote any local "${localip}" - fi - _tunnel 6rd dev "${IFACE}" 6rd-prefix "${prefix}" - eend $? || return 1 - _up - - routes_ip6rd="2003::/3 via ::${relay} metric 2147483647" - service_set_value "config_ip6rd_$IFVAR" "$config_ip6rd" - service_set_value "routes_ip6rd_$IFVAR" "$routes_ip6rd" -} - -ip6rd_start() -{ - local config_ip6rd=$(service_get_value "config_ip6rd_$IFVAR") - local routes_ip6rd=$(service_get_value "routes_ip6rd_$IFVAR") - - # Now apply our config - eval config_${config_index}=\'"${config_ip6rd}"\' - : $(( config_index -= 1 )) - - # Add a route for us, ensuring we don't delete anything else - local routes="$(_get_array "routes_${IFVAR}") -$routes_ip6rd" - eval routes_${IFVAR}=\$routes -} - -_ip6rd_inet_atoi() -{ - local IFS="${IFS}." ipi=0 j=3 - for i in $1 ; do - # post-decrement isn't valid - ipi=$(( ipi | (i << (8*j)) )) - j=$(( j - 1 )) - done - echo ${ipi} -} - -_ip6rd_inet_itoa() -{ - local ipi=$1 bitmask v - bitmask=$(( (1 << 24)-1 )) - for i in 0 1 2 3; do - v=$(( (ipi & ~bitmask) >> 24 )) - ipi=$(( (ipi & bitmask) << 8 )) - if [ $i != 3 ] ; then - printf "%d." $v - else - printf "%d\n" $v - fi - done -} - -_ip6rd_inet_get_network() -{ - local a=$(_ip6rd_inet_atoi $1) - local net=$(( a & ( (1<<$2)-1 ) )) - local cidr=$(( 32 - $2 )) - echo $(_ip6rd_inet_itoa $(( (net << cidr ) )) ) -} - -_ip6rd_inet_is_private_network() -{ - if [ "$(_ip6rd_inet_get_network $1 16)" = "192.168.0.0" ]\ - || [ "$(_ip6rd_inet_get_network $1 8)" = "10.0.0.0" ]\ - || [ "$(_ip6rd_inet_get_network $1 12)" = "172.16.0.0" ]\ - || [ "$(_ip6rd_inet_get_network $1 16)" = "169.254.0.0" ] - then - return 0; - fi - return 1; -} - -_ip6rd_prefix_shave_bits() -{ - local ipi= - ipi=$(( ($(_ip6rd_inet_atoi $1) & (1<<(32-$2))-1) << $2)) - if [ $2 -le 16 ] - then - printf "%04x:%0$(( (16-$2>>2)+(($2%4)?1:0) ))x" \ - $((ipi >> 16)) $((ipi & (1<<(16-$2))-1)) - elif [ $2 -lt 32 ] - then - printf "%0$(( (32-$2>>2)+(($2%4)?1:0) ))x" \ - $((ipi >> 16)) - fi -} |