ddns-scripts: Fix for domains with dash

Signed-off-by: Wenli Looi <wlooi@ucalgary.ca>
(cherry picked from commit 9e2aad3fde)

net/ddns-scripts/Makefile

@@ -8,7 +8,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ddns-scripts
 PKG_VERSION:=2.8.2
-PKG_RELEASE:=8
+PKG_RELEASE:=9
 
 PKG_LICENSE:=GPL-2.0
 

net/ddns-scripts/files/usr/lib/ddns/dynamic_dns_functions.sh

@@ -70,11 +70,11 @@ IPV6_REGEX="\(\([0-9A-Fa-f]\{1,4\}:\)\{1,\}\)\(\([0-9A-Fa-f]\{1,4\}\)\{0,1\}\)\(
 # characters that are dangerous to pass to a shell command line
 SHELL_ESCAPE="[\"\'\`\$\!();><{}?|\[\]\*\\\\]"
 
-# dns character set
+# dns character set. "-" must be the last character
 DNS_CHARSET="[@a-zA-Z0-9._-]"
 
-# domains can have * for wildcard
-DNS_CHARSET_DOMAIN="[@a-zA-Z0-9._-*]"
+# domains can have * for wildcard. "-" must be the last character
+DNS_CHARSET_DOMAIN="[@a-zA-Z0-9._*-]"
 
 # detect if called by ddns-lucihelper.sh script, disable retrys (empty variable == false)
 LUCI_HELPER=$(printf %s "$MYPROG" | grep -i "luci")