树莓派RaspberryPi设置DDNS获取解析公网IPv4和IPv6

#!/bin/bash
## This will will check record content and update cloudflare if necessary
## Script will take the following parameters
## -e : Cloudflare login email
## -k : Cloudflare login key
## -z : Cloudflare zone name
## -n : Cloudflare FQDN
## -i : interface to be used (optional on type A/AAAA)
## -c : content to be updated (required except for A/AAAA records)
## -t : DNS record Type

## Default section
auth_email="[email protected]" #你的CloudFlare注册账户邮箱
auth_key="*****************" #你的cloudflare账户Globel ID
zone_name="Your main Domain" #你的域名
record_name="Your Full Domain" #完整域名
rec_type=AAAA
iface=wlan0 #interface to obtain IP address
content=""

while getopts ":e:k:z:n:i:t:c:" opts
do
case "$opts" in
"e")
auth_email="$OPTARG"
;;
"k")
auth_key=$OPTARG
;;
"z")
zone_name="$OPTARG"
;;
"n")
record_name="$OPTARG"
;;
"t")
rec_type=$OPTARG
;;
"i")
iface=$OPTARG
;;
"c")
content="$OPTARG"
;;
"?")
echo "Unknown option $OPTARG"
exit 1
;;
":")
echo "Missing argument for option $OPTARG"
exit 1
;;
esac
done
if [ "$content" == "" ]; then
if [ "$rec_type" == "AAAA" ]; then
content=`/bin/ip -6 addr show $iface|sed -n 's%.*inet6\s\(.*\)/64.*global.*%\1%p'`
elif [ "$rec_type" == "A" ]; then
content=`/bin/ip -4 addr show $iface|sed -n 's/.*inet\s\(.*\)\/24.*/\1/p'`
elif [ "$content" == "" ]; then
echo "Must specify content on record type other than A/AAAA!"
exit 1
fi
fi

echo $(date)
echo "Checking $rec_type for $record_name"
zone_id=`curl -s -X GET "https://api.cloudflare.com/client/v4/zones?name=$zone_name" \
-H "X-Auth-Email: $auth_email" \
-H "X-Auth-Key: $auth_key" \
-H "content-Type: application/json" | \
sed -n 's/.*result":\[{"id":"\([[:alnum:]]*\)".*/\1/p'`

#echo "Zone ID : $zone_id"

record_str=`curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_id/dns_records?type=$rec_type&name=$record_name" \
-H "X-Auth-Email: $auth_email" \
-H "X-Auth-Key: $auth_key" \
-H "content-Type: application/json"`

record_id=`echo $record_str|sed -n 's/.*result":\[{"id":"\([[:alnum:]]*\)".*/\1/p'`
#echo "Record ID: $record_id"

current_content=`echo $record_str| sed -n 's/.*content":"\(.*[^"]\)","proxiable.*/\1/p'`
#echo "Current Content : $current_content"

if [[ $current_content == $content ]]; then
echo "Content not changed. Exiting."
exit 0
else
echo "Content Changed. Update Cloudflare."
echo "Zone ID: $zone_id"
echo "Record ID: $record_id"
echo "Current Content: $current_content"
echo "New Content: $content"
fi

update=`curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$zone_id/dns_records/$record_id" \
-H "X-Auth-Email: $auth_email" \
-H "X-Auth-Key: $auth_key" \
-H "content-Type: application/json" \
-d "{\"id\":\"$zone_id\",\"type\":\"$rec_type\",\"name\":\"$record_name\",\"content\":\"$content\"}"`

if [[ $update == *"\"success\":false"* ]]; then
echo "API UPDATE FAILED. DUMPING RESULTS:\n$update"
exit 1
else
echo "$rec_type changed to: $content"
fi