Adding initial support for IPv6 in debconf container create script.

Note that this also removes support for non-CIDR IPv4 subnetmasks,
e.g. '255.255.255.0' now has to be specified as '24'.

Signed-off-by: Daniel Baumann <daniel.baumann@open-infrastructure.net>

1 files changed, 164 insertions, 53 deletions

diff --git a/share/scripts/debconf b/share/scripts/debconf
index fbabab4..46f0381 100755
--- a/share/scripts/debconf
+++ b/share/scripts/debconf
@@ -139,15 +139,6 @@ Chroot ()
 		${@}
 }
 
-CIDR ()
-{
-	x=${1##*255.}
-	set -- 0^^^128^192^224^240^248^252^254^ $(( (${#1} - ${#x})*2 )) ${x%%.*}
-
-	x=${1%%$3*}
-	echo $(( $2 + (${#x}/4) ))
-}
-
 Upgrade_system ()
 {
 	DIRECTORY="${1}"
@@ -474,11 +465,14 @@ EOF
 
 			if [ -n "${DIG}" ]
 			then
-				IPV4_ADDRESS1="$(${DIG} +short ${NAME} | tail -n1)"
+				IPV4_ADDRESS1="$(${DIG} A +short ${NAME} | tail -n1)"
 				IPV4_ADDRESS1_PART1="$(echo ${IPV4_ADDRESS1} | cut -d. -f1)"
 				IPV4_ADDRESS1_PART2="$(echo ${IPV4_ADDRESS1} | cut -d. -f2)"
 				IPV4_ADDRESS1_PART3="$(echo ${IPV4_ADDRESS1} | cut -d. -f3)"
 				IPV4_ADDRESS1_PART4="$(echo ${IPV4_ADDRESS1} | cut -d. -f4)"
+
+				IPV6_ADDRESS1="$(${DIG} AAAA +short ${NAME} | tail -n1)"
+				# TODO: address parts
 			fi
 
 			sed -e "s|@NAME@|${NAME}|g" \
@@ -487,6 +481,7 @@ EOF
 			    -e "s|@IPV4_ADDRESS1_PART2@|${IPV4_ADDRESS1_PART2}|g" \
 			    -e "s|@IPV4_ADDRESS1_PART3@|${IPV4_ADDRESS1_PART3}|g" \
 			    -e "s|@IPV4_ADDRESS1_PART4@|${IPV4_ADDRESS1_PART4}|g" \
+			    -e "s|@IPV6_ADDRESS1@|${IPV6_ADDRESS1}|g" \
 			"${FILE}" >> "${DIRECTORY}/preseed.cfg"
 		done
 
@@ -631,27 +626,50 @@ Configure_network ()
 	fi
 
 	# Create /etc/hosts
-	case "${NETWORK1_IPV4_METHOD}" in
-		none|dhcp)
+	rm -f "${DIRECTORY}/etc/hosts.tmp"
 
-cat > "${DIRECTORY}/etc/hosts.tmp" << EOF
-127.0.0.1	localhost	${NAME}
+	if [ -n "${NETWORK1_IPV4_ADDRESS}" ]
+	then
 
-# The following lines are desirable for IPv6 capable hosts
-::1	ip6-localhost ip6-loopback
-fe00::0	ip6-localnet
-ff00::0	ip6-mcastprefix
-ff02::1	ip6-allnodes
-ff02::2	ip6-allrouters
+cat >> "${DIRECTORY}/etc/hosts.tmp" << EOF
+${NETWORK1_IPV4_ADDRESS}	${NAME}
 EOF
 
-			;;
+	fi
+
+	if [ -n "${NETWORK1_IPV6_ADDRESS}" ]
+	then
+
+cat >> "${DIRECTORY}/etc/hosts.tmp" << EOF
+${NETWORK1_IPV6_ADDRESS}	${NAME}
+EOF
 
-		static)
+	fi
+
+	if [ -n "${NETWORK1_IPV4_ADDRESS}" ] || [ -n "${NETWORK1_IPV6_ADDRESS}" ]
+	then
+		echo >> "${DIRECTORY}/etc/hosts.tmp"
+	fi
+
+	if [ -z "${NETWORK1_IPV4_ADDRESS}" ] && [ -z "${NETWORK1_IPV6_ADDRESS}" ]
+	then
+		# localhost only
+
+cat > "${DIRECTORY}/etc/hosts.tmp" << EOF
+127.0.0.1	localhost	${NAME}
+::1		localhost	${NAME}
+EOF
+
+	else
 
 cat > "${DIRECTORY}/etc/hosts.tmp" << EOF
 127.0.0.1	localhost
-${NETWORK1_IPV4_ADDRESS}	${NAME}
+::1		localhost
+EOF
+
+	fi
+
+cat >> "${DIRECTORY}/etc/hosts.tmp" << EOF
 
 # The following lines are desirable for IPv6 capable hosts
 ::1	ip6-localhost ip6-loopback
@@ -661,9 +679,6 @@ ff02::1	ip6-allnodes
 ff02::2	ip6-allrouters
 EOF
 
-			;;
-	esac
-
 	mv "${DIRECTORY}/etc/hosts.tmp" "${DIRECTORY}/etc/hosts"
 }
 
@@ -684,54 +699,66 @@ Configure_systemd_networkd ()
 		eval IPV4_POST_UP="$`echo NETWORK${NUMBER}_IPV4_POST_UP`"
 		eval IPV4_POST_DOWN="$`echo NETWORK${NUMBER}_IPV4_POST_DOWN`"
 
-		if [ -z "${IPV4_METHOD}" ]
-		then
-			continue
-		fi
+		eval IPV6_COMMENT="$`echo NETWORK${NUMBER}_IPV6_COMMENT`"
+		eval IPV6_METHOD="$`echo NETWORK${NUMBER}_IPV6_METHOD`"
+		eval IPV6_ADDRESS="$`echo NETWORK${NUMBER}_IPV6_ADDRESS`"
+		eval IPV6_GATEWAY="$`echo NETWORK${NUMBER}_IPV6_GATEWAY`"
+		eval IPV6_NETMASK="$`echo NETWORK${NUMBER}_IPV6_NETMASK`"
+		eval IPV6_POST_UP="$`echo NETWORK${NUMBER}_IPV6_POST_UP`"
+		eval IPV6_POST_DOWN="$`echo NETWORK${NUMBER}_IPV6_POST_DOWN`"
 
-		IPV4_SUFFIX="$(CIDR ${IPV4_NETMASK})"
-		IPV4_CIDR="${IPV4_ADDRESS}/${IPV4_SUFFIX}"
+		if [ "${IPV4_METHOD}" != "none" ] || [ "${IPV6_METHOD}" != "none" ]
+		then
 
 cat > "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
 [Match]
 Name=eno${NUMBER}
+EOF
+
+		fi
+
+		if [ -n "${IPV4_METHOD}" ] && [ "${IPV4_METHOD}" != "none" ]
+		then
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
 
 [Network]
 EOF
 
-		if [ -n "${IPV4_COMMENT}" ]
-		then
-			echo "Description=${IPV4_COMMENT}" >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network"
-		fi
+			if [ -n "${IPV4_COMMENT}" ]
+			then
+				echo "Description=${IPV4_COMMENT}" >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network"
+			fi
 
-		case "${IPV4_METHOD}" in
-			dhcp)
+			case "${IPV4_METHOD}" in
+				dhcp)
 
 cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
 DHCP=ipv4
 EOF
 
-				;;
+					;;
 
-			static)
+				static)
 
 cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
 DHCP=no
-Address=${IPV4_CIDR}
+Address=${IPV4_ADDRESS}/${IPV4_NETMASK}
 EOF
 
-				if [ -n "${IPV4_GATEWAY}" ]
-				then
+					if [ -n "${IPV4_GATEWAY}" ]
+					then
 
 cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
 Gateway=${IPV4_GATEWAY}
 EOF
 
-				fi
-		esac
+					fi
+					;;
+			esac
 
-		if [ -n "${IPV4_POST_UP}" ]
-		then
+			if [ -n "${IPV4_POST_UP}" ]
+			then
 
 cat > "${DIRECTORY}/etc/systemd/system/cnt-ipv4-post-up-eno${NUMBER}.service" << EOF
 [Unit]
@@ -747,11 +774,11 @@ ExecStart=/bin/sh -c "${IPV4_POST_UP}"
 WantedBy=multi-user.target
 EOF
 
-			chroot "${DIRECTORY}" systemctl enable cnt-ipv4-post-up-eno${NUMBER}.service
-		fi
+				chroot "${DIRECTORY}" systemctl enable cnt-ipv4-post-up-eno${NUMBER}.service
+			fi
 
-		if [ -n "${IPV4_POST_DOWN}" ]
-		then
+			if [ -n "${IPV4_POST_DOWN}" ]
+			then
 
 cat > "${DIRECTORY}/etc/systemd/system/cnt-ipv4-post-down-eno${NUMBER}.service" << EOF
 [Unit]
@@ -767,7 +794,90 @@ ExecStart=/bin/sh -c "${IPV4_POST_DOWN}"
 WantedBy=multi-user.target
 EOF
 
-			chroot "${DIRECTORY}" systemctl enable cnt-ipv4-post-down-eno${NUMBER}.service
+				chroot "${DIRECTORY}" systemctl enable cnt-ipv4-post-down-eno${NUMBER}.service
+			fi
+		fi
+
+		if [ -n "${IPV6_METHOD}" ] && [ "${IPV6_METHOD}" != "none" ]
+		then
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+
+[Network]
+EOF
+
+			if [ -n "${IPV6_COMMENT}" ]
+			then
+				echo "Description=${IPV6_COMMENT}" >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network"
+			fi
+
+			case "${IPV6_METHOD}" in
+				dhcp)
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+DHCP=ipv6
+EOF
+
+					;;
+
+				static)
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+DHCP=no
+Ipv6AcceptRA=no
+Address=${IPV6_ADDRESS}/${IPV6_NETMASK}
+EOF
+
+					if [ -n "${IPV6_GATEWAY}" ]
+					then
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+Gateway=${IPV6_GATEWAY}
+EOF
+
+					fi
+					;;
+			esac
+
+			if [ -n "${IPV6_POST_UP}" ]
+			then
+
+cat > "${DIRECTORY}/etc/systemd/system/cnt-ipv6-post-up-eno${NUMBER}.service" << EOF
+[Unit]
+Description=${SOFTWARE} IPV6_POST_UP
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c "${IPV6_POST_UP}"
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+				chroot "${DIRECTORY}" systemctl enable cnt-ipv6-post-up-eno${NUMBER}.service
+			fi
+
+			if [ -n "${IPV6_POST_DOWN}" ]
+			then
+
+cat > "${DIRECTORY}/etc/systemd/system/cnt-ipv6-post-down-eno${NUMBER}.service" << EOF
+[Unit]
+Description=${SOFTWARE} IPV6_POST_DOWN
+After=network.target
+Wants=network.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c "${IPV6_POST_DOWN}"
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+				chroot "${DIRECTORY}" systemctl enable cnt-ipv6-post-down-eno${NUMBER}.service
+			fi
 		fi
 
 		NUMBER="$((${NUMBER} + 1))"
@@ -796,8 +906,9 @@ Commands ()
 		for NUMBER in $(seq 2 ${NETWORK_NUMBER})
 		do
 			eval IPV4_METHOD="$`echo NETWORK${NUMBER}_IPV4_METHOD`"
+			eval IPV6_METHOD="$`echo NETWORK${NUMBER}_IPV6_METHOD`"
 
-			if [ -z "${IPV4_METHOD}" ]
+			if [ -z "${IPV4_METHOD}" ] && [ -z "${IPV6_METHOD}" ]
 			then
 				continue
 			fi