IP_SUPPORTED_PROTOCOLS="${IP_SUPPORTED_PROTOCOLS} ipv6"
-function ipv6_device_autoconf_enable() {
+ipv6_device_autoconf_enable() {
local device="${1}"
assert device_exists "${device}"
sysctl_set "net.ipv6.conf.${device}.accept_ra" 1
sysctl_set "net.ipv6.conf.${device}.autoconf" 1
+
+ log INFO "Enabled IPv6 auto-configuration on '${device}'"
+
+ # Disable IPv6 forwarding which cannot be used when the
+ # device is using IPv6 auto-configuration.
+ ipv6_device_forwarding_disable "${device}"
}
-function ipv6_device_autoconf_disable() {
+ipv6_device_autoconf_disable() {
local device="${1}"
assert device_exists "${device}"
sysctl_set "net.ipv6.conf.${device}.accept_ra" 0
sysctl_set "net.ipv6.conf.${device}.autoconf" 0
+
+ log INFO "Disabled IPv6 auto-configuration on '${device}'"
+
+ # Enable IPv6 forwarding again
+ ipv6_device_forwarding_enable "${device}"
+
+ # Automatically disable privacy extensions
+ ipv6_device_privacy_extensions_disable "${device}"
+}
+
+ipv6_device_forwarding_enable() {
+ local device="${1}"
+ shift
+
+ local accept_ra=0
+
+ local arg
+ while read arg; do
+ case "${arg}" in
+ --accept-ra)
+ accept_ra=2
+ ;;
+ esac
+ done <<< "$(args "$@")"
+
+ sysctl_set "net.ipv6.conf.${device}.forwarding" 1
+
+ log INFO "Enabled IPv6 forwarding on '${device}'"
+
+ # If forwarding is enabled, the kernel won't process
+ # any router advertisements any more, which is not good
+ # when we still want a default route when running in
+ # DHCP client mode on an uplink zone.
+ if [ ${accept_ra} -gt 0 ]; then
+ log INFO " and accepting router advertisements"
+
+ sysctl_set "net.ipv6.conf.${device}.accept_ra" 2
+ fi
+}
+
+ipv6_device_forwarding_disable() {
+ local device="${1}"
+
+ sysctl_set "net.ipv6.conf.${device}.forwarding" 0
+
+ log INFO "Disabled IPv6 forwarding on '${device}'"
}
# Enable IPv6 RFC3041 privacy extensions if desired
-function ipv6_device_privacy_extensions_enable() {
+ipv6_device_privacy_extensions_enable() {
local device="${1}"
assert device_exists "${device}"
sysctl_set "net.ipv6.conf.${device}.use_tempaddr" 2
}
-function ipv6_device_privacy_extensions_disable() {
+ipv6_device_privacy_extensions_disable() {
local device="${1}"
assert device_exists "${device}"
sysctl_set "net.ipv6.conf.${device}.use_tempaddr" 0
}
-function ipv6_is_valid() {
- ipcalc --ipv6 -c $@ >/dev/null 2>&1
-
- case "$?" in
- 0)
- return ${EXIT_OK}
- ;;
- *)
- return ${EXIT_ERROR}
- ;;
- esac
+ipv6_is_valid() {
+ local address=${1}
+
+ local prefix=$(ip_get_prefix ${address})
+ address=$(ip_split_prefix ${address})
+
+ # If prefix is set, we check if it is correct
+ if isset prefix; then
+ # Must be numeric
+ isinteger prefix || return ${EXIT_FALSE}
+
+ # Must be 128 if present
+ [ ${prefix} -eq 128 ] || return ${EXIT_FALSE}
+ fi
+
+ inetcalc -6 -c ${address} && return ${EXIT_TRUE} || return ${EXIT_FALSE}
+}
+
+ipv6_net_is_valid() {
+ local net="${1}"
+
+ local prefix="$(ip_get_prefix "${net}")"
+ local addr="$(ip_split_prefix "${net}")"
+
+ ipv6_prefix_is_valid "${prefix}" && ipv6_is_valid "${addr}"
}
-function ipv6_prefix_is_valid() {
+ipv6_prefix_is_valid() {
local prefix=${1}
- assert isset prefix
+
+ # Check if prefix is a number
+ isinteger prefix || return ${EXIT_FALSE}
[ ${prefix} -le 0 ] && return ${EXIT_FALSE}
[ ${prefix} -gt 128 ] && return ${EXIT_FALSE}
return ${EXIT_TRUE}
}
-function ipv6_get_prefix() {
+ipv6_get_prefix() {
ip_get_prefix "$@"
}
-function ipv6_split_prefix() {
+ipv6_split_prefix() {
ip_split_prefix "$@"
}
-function ipv6_implode() {
- local address=${1}
+ipv6_address_add() {
+ local address="${1}"
assert isset address
- local ADDRESS6_IMPL
- eval $(ipcalc -6 -i ${address} 2>/dev/null)
- assert isset ADDRESS6_IMPL
-
- print "${ADDRESS6_IMPL}"
-}
-
-function ipv6_explode() {
- local address=${1}
- assert isset address
+ local device="${2}"
+ assert device_exists "${device}"
+ shift 2
+
+ local scope="global"
+ local preferred_lft valid_lft
+
+ # Enable to wait until DAD has finished and return
+ # an error if it has failed
+ local wait_for_dad="true"
+
+ local arg
+ while read arg; do
+ case "${arg}" in
+ --preferred-lifetime=*)
+ preferred_lft="$(cli_get_val "${arg}")"
+ ;;
+ --valid-lifetime=*)
+ valid_lft="$(cli_get_val "${arg}")"
+ ;;
+ --no-wait-for-dad)
+ wait_for_dad="false"
+ ;;
+ esac
+ done <<< "$(args "$@")"
+
+ local cmd="ip addr add ${address} dev ${device} scope ${scope}"
+
+ # Preferred lifetime
+ if isinteger preferred_lft; then
+ list_append cmd "preferred_lft ${preferred_lft}"
+ fi
- # Nothing to do if the length of the address is 39.
- if [ ${#address} -eq 39 ]; then
- print "${address}"
- return ${EXIT_OK}
+ # Valid lifetime
+ if isinteger valid_lft; then
+ list_append cmd "valid_lft ${valid_lft}"
fi
- local ADDRESS6_EXPL
- eval $(ipcalc -6 -e ${address} 2>/dev/null)
- assert isset ADDRESS6_EXPL
+ cmd_quiet "${cmd}" || return ${EXIT_ERROR}
- print "${ADDRESS6_EXPL}"
-}
+ if enabled wait_for_dad; then
+ log DEBUG "Waiting for DAD to complete..."
-function ipv6_addr_eq() {
- local addr1=${1}
- assert isset addr1
+ ipv6_wait_for_dad "${address}" "${device}"
+ local ret="${?}"
- local addr2=${2}
- assert isset addr2
+ case "${ret}" in
+ # DAD OK
+ ${EXIT_DAD_OK})
+ log DEBUG "DAD successfully completed"
+ return ${EXIT_OK}
+ ;;
- local addr
- for addr in addr1 addr2; do
- printf -v ${addr} "%s" $(ipv6_explode ${!addr})
- done
+ # DAD failed
+ ${EXIT_DAD_FAILED})
+ log ERROR "DAD failed"
- [[ "${addr1}" = "${addr2}" ]] \
- && return ${EXIT_TRUE} || return ${EXIT_FALSE}
-}
+ # Remove the IP address again
+ ipv6_address_del "${address}" "${device}"
-function ipv6_addr_gt() {
- local addr1=${1}
- assert isset addr1
+ return ${EXIT_ERROR}
+ ;;
- local addr2=${2}
- assert isset addr2
+ # Any unknown errors
+ *)
+ log ERROR "DAD failed with unhandled error: ${ret}"
+ return ${EXIT_ERROR}
+ ;;
+ esac
+ fi
- local addr
- for addr in addr1 addr2; do
- printf -v ${addr} "%s" $(ipv6_explode ${!addr})
+ return ${EXIT_OK}
+}
- # Remove all colons
- printf -v ${addr} "${!addr//:/}"
- done
+ipv6_address_del() {
+ local address="${1}"
+ local device="${2}"
- local i addr1_oct addr2_oct
- for i in 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30; do
- addr1_oct="0x${addr1:${i}:2}"
- addr2_oct="0x${addr2:${i}:2}"
+ ip_address_del "${device}" "${address}"
+}
- [[ ${addr1_oct} -gt ${addr2_oct} ]] && return ${EXIT_TRUE}
- done
+ipv6_address_flush() {
+ local device="${1}"
+ assert isset device
- return ${EXIT_FALSE}
-}
+ log DEBUG "Flushing all IPv6 addresses on ${device}"
-function ipv6_hash() {
- local address=${1}
+ # Remove any stale addresses from aborted clients
+ cmd_quiet ip -6 addr flush dev "${device}" scope global permanent
+ cmd_quiet ip -6 addr flush dev "${device}" scope global dynamic
+}
+ipv6_address_change_lifetime() {
+ local address="${1}"
assert isset address
- # Explode address
- address=$(ipv6_explode ${address})
+ local device="${2}"
+ assert device_exists "${device}"
+ shift 2
+
+ local preferred_lft
+ local valid_lft
+
+ local arg
+ while read arg; do
+ case "${arg}" in
+ --preferred-lifetime=*)
+ preferred_lft="$(cli_get_val "${arg}")"
+ ;;
+ --valid-lifetime=*)
+ valid_lft="$(cli_get_val "${arg}")"
+ ;;
+ esac
+ done <<< "$(args "$@")"
+
+ local cmd="ip -6 addr change ${address} dev ${device} scope global"
+
+ if isinteger preferred_lft; then
+ list_append cmd "preferred_lft" "${preferred_lft}"
+ fi
- echo "${address//:/}"
-}
+ if isinteger valid_lft; then
+ list_append cmd "valid_lft" "${valid_lft}"
+ fi
-function ipv6_get_network() {
- local addr=${1}
- assert isset addr
+ if ! cmd_quiet "${cmd}"; then
+ log ERROR "Could not change lifetimes of ${address} (${device})"
+ return ${EXIT_ERROR}
+ fi
- # Check if a prefix (e.g. /64) is provided.
- local prefix=$(ip_get_prefix ${addr})
- assert ipv6_prefix_is_valid ${prefix}
+ log DEBUG "Changed lifetimes of ${address} (${device}) to:"
+ if isset preferred_lft; then
+ log DEBUG " preferred: ${preferred_lft}"
+ fi
- local PREFIX6
- eval $(ipcalc --ipv6 -p ${addr})
- assert isset PREFIX6
+ if isset valid_lft; then
+ log DEBUG " valid: ${valid_lft}"
+ fi
- print "${PREFIX6}/${prefix}"
+ return ${EXIT_OK}
}
-function ipv6_6rd_format_address() {
- local isp_prefix="${1}"
- assert ipv6_is_valid "${isp_prefix}"
+ipv6_get_dad_status() {
+ local address="${1}"
+ assert isset address
- local client_address="${2}"
- assert ipv4_is_valid "${client_address}"
+ local device="${2}"
+ assert isset device
- local prefix="$(ipv6_get_prefix "${isp_prefix}")"
- isp_prefix="$(ipv6_split_prefix "${isp_prefix}")"
+ # Strip prefix from address
+ address="$(ipv6_split_prefix "${address}")"
- # This only works for prefix lengths up to 32 bit.
- assert [ "${prefix}" -le 32 ]
- assert [ "${prefix}" -gt 0 ]
+ local output="$(ip -o addr show dev "${device}" to "${address}")"
+ if ! isset output; then
+ return ${EXIT_ERROR}
+ fi
- # Explode the address and throw away the second 32 bit.
- local address="$(ipv6_explode "${isp_prefix}")"
+ # Abort if DAD failed
+ if [[ ${output} =~ "dadfailed" ]]; then
+ return ${EXIT_DAD_FAILED}
+ fi
- client_address="$(ipv6_6rd_format_client_address ${client_address})"
- assert isset client_address
+ # Wait a little more if DAD is still in progress
+ if [[ ${output} =~ "tentative" ]]; then
+ return ${EXIT_DAD_TENTATIVE}
+ fi
- local block1="0x${address:0:4}"
- local block2="0x${address:5:4}"
- local block3="0x${address:10:4}"
- local block4="0x${address:15:4}"
+ # DAD has successfully completed
+ return ${EXIT_DAD_OK}
+}
- address="$(( (${block1} << 48) + (${block2} << 32) + (${block3} << 16) + ${block4} ))"
- assert [ "${address}" -gt 0 ]
+ipv6_wait_for_dad() {
+ local address="${1}"
+ assert isset address
- block1="0x${client_address:0:4}"
- block2="0x${client_address:5:4}"
+ local device="${2}"
+ assert isset device
+
+ # Strip prefix from address
+ address="$(ipv6_split_prefix "${address}")"
+
+ local i
+ for i in {0..10}; do
+ # Check DAD status
+ ipv6_get_dad_status "${address}" "${interface}"
+ local ret="${?}"
+
+ case "${ret}" in
+ # DAD is still in progress. Give it a moment to settle...
+ ${EXIT_DAD_TENTATIVE})
+ sleep 0.5
+ continue
+ ;;
+
+ # Raise all other error codes
+ ${EXIT_DAD_OK}|${EXIT_DAD_FAILED}|*)
+ return ${ret}
+ ;;
+ esac
+ done
- client_address="$(( (${block1} << 48) + (${block2} << 32) ))"
+ return ${EXIT_ERROR}
+}
- # Fix for numbers that are interpreted by bash as negative
- # numbers and therefore filled up with ones when shifted to
- # the right. Weird.
- if [ "${client_address}" -gt 0 ]; then
- client_address="$(( ${client_address} >> ${prefix} ))"
- else
- local bitmask="$(( 1 << 63 ))"
- client_address="$(( ${client_address} >> 1 ))"
- client_address="$(( ${client_address} ^ ${bitmask} ))"
- client_address="$(( ${client_address} >> $(( ${prefix} - 1 )) ))"
+ipv6_device_get_addresses() {
+ local device="${1}"
+ assert isset device
+ shift
+
+ local scope
+
+ local arg
+ while read arg; do
+ case "${arg}" in
+ --scope=*)
+ scope="$(cli_get_val "${arg}")"
+ ;;
+ esac
+ done <<< "$(args "$@")"
+
+ local cmd="ip -o addr show dev ${device}"
+ if isset scope; then
+ assert isoneof scope global dynamic link
+ list_append cmd "scope ${scope}"
fi
- assert [ "${client_address}" -gt 0 ]
- # XOR everything together
- address="$(( ${address} ^ ${client_address} ))"
- prefix="$(( ${prefix} + 32 ))"
+ local addresses
+ local line args
+ while read line; do
+ args=( ${line} )
+
+ local i
+ for (( i=0; i < ${#args[@]} - 1; i++ )); do
+ if [ "${args[${i}]}" = "inet6" ]; then
+ list_append_one addresses "${args[$(( ${i} + 1 ))]}"
+ break
+ fi
+ done
+ done <<< "$(${cmd})"
+
+ list_sort ${addresses}
+}
- local block formatted_address=":"
- while [ ${address} -gt 0 ]; do
- printf -v block "%x" "$(( ${address} & 0xffff ))"
- formatted_address="${block}:${formatted_address}"
+ipv6_format() {
+ inetcalc -6 -f "$@"
+}
- address="$(( ${address} >> 16 ))"
- done
+ipv6_addr_eq() {
+ assert [ $# -eq 2 ]
+
+ local addr1="${1}"
+ local addr2="${2}"
- assert ipv6_is_valid "${formatted_address}"
+ inetcalc -6 -e "${addr1}" "${addr2}" \
+ && return ${EXIT_TRUE} || return ${EXIT_FALSE}
+}
+
+ipv6_addr_gt() {
+ assert [ $# -eq 2 ]
- # Implode the output IP address.
- formatted_address="$(ipv6_implode "${formatted_address}")"
+ local addr1="${1}"
+ local addr2="${2}"
- print "${formatted_address}/${prefix}"
+ inetcalc -6 -g "${addr1}" "${addr2}" \
+ && return ${EXIT_TRUE} || return ${EXIT_FALSE}
}
-function ipv6_6rd_format_client_address() {
- local address="${1}"
- assert isset address
+ipv6_addr_ge() {
+ ipv6_addr_eq "$@" || ipv6_addr_gt "$@"
+}
+
+ipv6_addr_lt() {
+ ! ipv6_addr_eq "$@" && ! ipv6_addr_gt "$@"
+}
+
+ipv6_addr_le() {
+ ipv6_addr_eq "$@" || ! ipv6_addr_gt "$@"
+}
- print "%02x%02x:%02x%02x" ${address//\./ }
+ipv6_get_network() {
+ ip_get_network "$@"
}