From a02687bc62af697cce2d505921608ae3160a2540 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@open-infrastructure.net>
Date: Fri, 27 Oct 2017 13:43:55 +0200
Subject: Supporting using IP address parts of the container name in preseed
 files for container debconf create script.

This is usefull to automatically construct IP gateway addresses or
veth interface names in a diff-friendly way.

Signed-off-by: Daniel Baumann <daniel.baumann@open-infrastructure.net>
---
 share/scripts/debconf                        | 8 ++++++++
 share/scripts/debconf.d/0002-preseed-debconf | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/share/scripts/debconf b/share/scripts/debconf
index 2edd543..619d84c 100755
--- a/share/scripts/debconf
+++ b/share/scripts/debconf
@@ -629,10 +629,18 @@ EOF
 			if [ -n "${DIG}" ]
 			then
 				IPV4_ADDRESS="$(${DIG} +short ${NAME} | tail -n1)"
+				IPV4_ADDRESS_PART1="$(echo ${IPV4_ADDRESS} | cut -d. -f1)"
+				IPV4_ADDRESS_PART2="$(echo ${IPV4_ADDRESS} | cut -d. -f2)"
+				IPV4_ADDRESS_PART3="$(echo ${IPV4_ADDRESS} | cut -d. -f3)"
+				IPV4_ADDRESS_PART4="$(echo ${IPV4_ADDRESS} | cut -d. -f4)"
 			fi
 
 			sed -e "s|@NAME@|${NAME}|g" \
 			    -e "s|@IPV4_ADDRESS@|${IPV4_ADDRESS}|g" \
+			    -e "s|@IPV4_ADDRESS_PART1@|${IPV4_ADDRESS_PART1}|g" \
+			    -e "s|@IPV4_ADDRESS_PART2@|${IPV4_ADDRESS_PART2}|g" \
+			    -e "s|@IPV4_ADDRESS_PART3@|${IPV4_ADDRESS_PART3}|g" \
+			    -e "s|@IPV4_ADDRESS_PART4@|${IPV4_ADDRESS_PART4}|g" \
 			"${FILE}" >> "${DIRECTORY}/preseed.cfg"
 		done
 
diff --git a/share/scripts/debconf.d/0002-preseed-debconf b/share/scripts/debconf.d/0002-preseed-debconf
index 36cf948..93841b6 100755
--- a/share/scripts/debconf.d/0002-preseed-debconf
+++ b/share/scripts/debconf.d/0002-preseed-debconf
@@ -83,10 +83,18 @@ do
 	if [ -n "${DIG}" ]
 	then
 		IPV4_ADDRESS="$(${DIG} +short ${NAME} | tail -n1)"
+		IPV4_ADDRESS_PART1="$(echo ${IPV4_ADDRESS} | cut -d. -f1)"
+		IPV4_ADDRESS_PART2="$(echo ${IPV4_ADDRESS} | cut -d. -f2)"
+		IPV4_ADDRESS_PART3="$(echo ${IPV4_ADDRESS} | cut -d. -f3)"
+		IPV4_ADDRESS_PART4="$(echo ${IPV4_ADDRESS} | cut -d. -f4)"
 	fi
 
 	sed -e "s|@NAME@|${NAME}|g" \
 	    -e "s|@IPV4_ADDRESS@|${IPV4_ADDRESS}|g" \
+	    -e "s|@IPV4_ADDRESS_PART1@|${IPV4_ADDRESS_PART1}|g" \
+	    -e "s|@IPV4_ADDRESS_PART2@|${IPV4_ADDRESS_PART2}|g" \
+	    -e "s|@IPV4_ADDRESS_PART3@|${IPV4_ADDRESS_PART3}|g" \
+	    -e "s|@IPV4_ADDRESS_PART4@|${IPV4_ADDRESS_PART4}|g" \
 	"${DEBCONF_PRESEED_FILE}" > "${DIRECTORY}/preseed.cfg"
 
 	# Apply user specified preseed files
-- 
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