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add validity check for ipv4 addresses

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This commit is contained in:
Aaron Riedel 2024-07-24 14:06:03 +02:00
parent 43d20a1108
commit 98080c7d07
Signed by: aaron
GPG key ID: 643004654D40D577
1 changed files with 3 additions and 3 deletions
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4
ddns4.sh
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@ -44,10 +44,10 @@ echo -e "${INFO} started $(date)"
echo -e "${INFO} DNS Record will be $SUBDOMAIN_IPV4.$DNSZONE_IPV4"
echo -e "${PENDING} get IP address"
IPv4="$(curl -s4 https://ip.hetzner.com)"
if [[ -z $IPv4 ]]; then
if [[ -z $IPv4 || ! $IPv4 =~ ^[0-9]{1,3}("."[0-9]{1,3}){3}$ ]]; then
IPv4="$(curl -s4 https://icanhazip.com)"
fi
if [[ -z $IPv4 ]]; then
if [[ -z $IPv4 || ! $IPv4 =~ ^[0-9]{1,3}("."[0-9]{1,3}){3}$ ]]; then
echo -e "${REPLACE}${FAIL} IPv4 not found"
exit 1
else