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Refactor nslookup for IPv4 and ddns_ip extraction #110

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Refactor nslookup for IPv4 and ddns_ip extraction #110

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11 changes: 9 additions & 2 deletions build/dnf_data/home/template/init/monitor_ip/monitor_ip.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -73,8 +73,15 @@ wait_time=${DDNS_INTERVAL:-10}
while [ -z "$MONITOR_PUBLIC_IP" ] && [ "$DDNS_ENABLE" = true ] && [ -n "$DDNS_DOMAIN" ];
do
old_ip=$(cat /data/monitor_ip/MONITOR_PUBLIC_IP 2>/dev/null || true)
nslookup_output=$(nslookup -debug $DDNS_DOMAIN 2>/dev/null || true)
ddns_ip=$(echo "$nslookup_output" | awk '/^Address: / { print $2 }')
# nslookup_output=$(nslookup -debug $DDNS_DOMAIN 2>/dev/null || true)
# 只获取IPV4地址
nslookup_output=$(nslookup -type=A $DDNS_DOMAIN 2>/dev/null || true)

# ddns_ip=$(echo "$nslookup_output" | awk '/^Address: / { print $2 }')
# nslookup 可能会得到 100.100.100.100 因此必须要和Name一组的IP才是真正的DDNS IP
ddns_ip=$(echo "$nslookup_output" | awk '/^Name:/{found=1} found && /^Address:/{print $2; exit}' | sed 's/#.*//')


# 判断ddns_ip是否为空
if [ -z "$ddns_ip" ]; then
echo "ddns ip is empty, wait $wait_time second"
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