git subrepo clone https://github.com/mailcow/mailcow-dockerized.git mailcow/src/mailcow-dockerized
subrepo: subdir: "mailcow/src/mailcow-dockerized"
merged: "a832becb"
upstream: origin: "https://github.com/mailcow/mailcow-dockerized.git"
branch: "master"
commit: "a832becb"
git-subrepo: version: "0.4.3"
origin: "???"
commit: "???"
Change-Id: If5be2d621a211e164c9b6577adaa7884449f16b5
diff --git a/mailcow/src/mailcow-dockerized/data/Dockerfiles/acme/expand6.sh b/mailcow/src/mailcow-dockerized/data/Dockerfiles/acme/expand6.sh
new file mode 100755
index 0000000..a781722
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/Dockerfiles/acme/expand6.sh
@@ -0,0 +1,131 @@
+#!/bin/bash
+
+##################################################################################
+#
+# Copyright (C) 2017 Craig Miller
+#
+# See the file "LICENSE" for information on usage and redistribution
+# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+# Distributed under GPLv2 License
+#
+##################################################################################
+
+
+# IPv6 Address Expansion functions
+#
+# by Craig Miller 19 Feb 2017
+#
+# 16 Nov 2017 v0.93 - added CLI functionality
+
+
+VERSION=0.93
+
+empty_addr="0000:0000:0000:0000:0000:0000:0000:0000"
+empty_addr_len=${#empty_addr}
+
+function usage {
+ echo " $0 - expand compressed IPv6 addresss "
+ echo " e.g. $0 2001:db8:1:12:123::456 "
+ echo " "
+ echo " -t self test"
+ echo " "
+ echo " By Craig Miller - Version: $VERSION"
+ exit 1
+ }
+
+if [ "$1" == "-h" ]; then
+ #call help
+ usage
+fi
+
+#
+# Expands IPv6 quibble to 4 digits with leading zeros e.g. db8 -> 0db8
+#
+# Returns string with expanded quibble
+
+function expand_quibble() {
+ addr=$1
+ # create array of quibbles
+ addr_array=(${addr//:/ })
+ addr_array_len=${#addr_array[@]}
+ # step thru quibbles
+ for ((i=0; i< $addr_array_len ; i++ ))
+ do
+ quibble=${addr_array[$i]}
+ quibble_len=${#quibble}
+ case $quibble_len in
+ 1) quibble="000$quibble";;
+ 2) quibble="00$quibble";;
+ 3) quibble="0$quibble";;
+ esac
+ addr_array[$i]=$quibble
+ done
+ # reconstruct addr from quibbles
+ return_str=${addr_array[*]}
+ return_str="${return_str// /:}"
+ echo $return_str
+}
+
+#
+# Expands IPv6 address :: format to full zeros
+#
+# Returns string with expanded address
+
+function expand() {
+ if [[ $1 == *"::"* ]]; then
+ # check for leading zeros on front_addr
+ if [[ $1 == "::"* ]]; then
+ front_addr=0
+ else
+ front_addr=$(echo $1 | sed -r 's;([^ ]+)::.*;\1;')
+ fi
+ # check for trailing zeros on back_addr
+ if [[ $1 == *"::" ]]; then
+ back_addr=0
+ else
+ back_addr=$(echo $1 | sed -r 's;.*::([^ ]+);\1;')
+ fi
+ front_addr=$(expand_quibble $front_addr)
+ back_addr=$(expand_quibble $back_addr)
+
+ new_addr=$empty_addr
+ front_addr_len=${#front_addr}
+ back_addr_len=${#back_addr}
+ # calculate fill needed
+ num_zeros=$(($empty_addr_len - $front_addr_len - $back_addr_len - 1))
+
+ #fill_str=${empty_addr[0]:0:$num_zeros}
+ new_addr="$front_addr:${empty_addr[0]:0:$num_zeros}$back_addr"
+
+ # return expanded address
+ echo $new_addr
+ else
+ # return input with expandd quibbles
+ expand_quibble $1
+ fi
+}
+
+# self test - call with '-t' parameter
+if [ "$1" == "-t" ]; then
+ # add address examples to test
+ expand fd11::1d70:cf84:18ef:d056
+ expand 2a01::1
+ expand fe80::f203:8cff:fe3f:f041
+ expand 2001:db8:123::5
+ expand 2001:470:ebbd:0:f203:8cff:fe3f:f041
+ # special cases
+ expand ::1
+ expand fd32:197d:3022:1101::
+ exit 1
+fi
+
+# allow script to be sourced (with no arguements)
+if [[ $1 != "" ]]; then
+ # validate input is an IPv6 address
+ if [[ $1 == *":"* ]]; then
+ expand $1
+ else
+ echo "ERROR: unregcognized IPv6 address $1"
+ exit 1
+ fi
+fi