81 lines
3.1 KiB
Bash
81 lines
3.1 KiB
Bash
#!/bin/bash
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auth_email="" # The email used to login 'https://dash.cloudflare.com'
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auth_key="" # Top right corner, "My profile" > "Global API Key"
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zone_identifier="" # Can be found in the "Overview" tab of your domain
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record_name="" # Which record you want to be synced
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proxy=true # Set the proxy to true or false
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###########################################
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## Define date time stamp function
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###########################################
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function ds() {
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date +"[%F %T]"
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}
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###########################################
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## Check if we have an public IP
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###########################################
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ip=$(curl -s https://api.ipify.org || curl -s https://ipv4.icanhazip.com/)
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if [ "${ip}" == "" ]; then
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message="$(ds) No public IP found."
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>&2 echo -e "${message}" >> ~/log
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exit 1
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fi
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###########################################
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## Seek for the A record
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###########################################
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echo "$(ds) Check Initiated" >> ~/log
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record=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records?name=$record_name" -H "X-Auth-Email: $auth_email" -H "X-Auth-Key: $auth_key" -H "Content-Type: application/json")
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###########################################
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## Check if the domaine has an A record
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###########################################
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if [[ $record == *"\"count\":0"* ]]; then
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message="$(ds) Record does not exist, perhaps create one first? (${ip} for ${record_name})"
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>&2 echo -e "${message}" >> ~/log
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exit 1
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fi
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###########################################
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## Get the existing IP
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###########################################
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old_ip=$(echo "$record" | grep -Po '(?<="content":")[^"]*' | head -1)
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# Compare if they're the same
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if [[ $ip == $old_ip ]]; then
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message="$(ds) IP ($ip) for ${record_name} has not changed."
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echo "${message}" >> ~/log
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exit 0
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fi
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###########################################
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## Set the record identifier from result
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###########################################
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record_identifier=$(echo "$record" | grep -Po '(?<="id":")[^"]*' | head -1)
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###########################################
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## Change the IP@Cloudflare using the API
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###########################################
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update=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records/$record_identifier" \
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-H "X-Auth-Email: $auth_email" \
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-H "X-Auth-Key: $auth_key" \
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-H "Content-Type: application/json" \
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--data "{\"id\":\"$zone_identifier\",\"type\":\"A\",\"proxied\":${proxy},\"name\":\"$record_name\",\"content\":\"$ip\"}")
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###########################################
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## Report the status
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###########################################
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case "$update" in
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*"\"success\":false"*)
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message="$(ds) $ip $record_name DDNS failed for $record_identifier ($ip). DUMPING RESULTS:\n$update"
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>&2 echo -e "${message}" >> ~/log
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exit 1;;
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*)
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message="$(ds) $ip $record_name DDNS updated."
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echo "${message}" >> ~/log
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exit 0;;
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esac
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