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cloudflare-template.sh

@@ -0,0 +1,71 @@
+#!/bin/bash
+
+auth_email=""                                      # The email used to login 'https://dash.cloudflare.com'
+auth_key=""                                        # Top right corner, "My profile" > "Global API Key"
+zone_identifier=""                                 # Can be found in the "Overview" tab of your domain
+record_name=""                                     # Which record you want to be synced
+proxy=true                                         # Set the proxy to true or false 
+
+###########################################
+## Check if we have an public IP
+###########################################
+ip=$(curl -s https://api.ipify.org || curl -s https://ipv4.icanhazip.com/)
+if [ "${ip}" == "" ]; then 
+  message="No public IP found."
+  >&2 echo -e "${message}" >> ~/log
+  exit 1
+fi
+
+###########################################
+## Seek for the A record
+###########################################
+echo " Check Initiated" >> ~/log
+record=$(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")
+
+###########################################
+## Check if the domaine has an A record
+###########################################
+if [[ $record == *"\"count\":0"* ]]; then
+  message=" Record does not exist, perhaps create one first? (${ip} for ${record_name})"
+  >&2 echo -e "${message}" >> ~/log
+  exit 1
+fi
+
+###########################################
+## Get the existing IP 
+###########################################
+old_ip=$(echo "$record" | grep -Po '(?<="content":")[^"]*' | head -1)
+# Compare if they're the same
+if [[ $ip == $old_ip ]]; then
+  message=" IP ($ip) for ${record_name} has not changed."
+  echo "${message}" >> ~/log
+  exit 0
+fi
+
+###########################################
+## Set the record identifier from result
+###########################################
+record_identifier=$(echo "$record" | grep -Po '(?<="id":")[^"]*' | head -1)
+
+###########################################
+## Change the IP@Cloudflare using the API
+###########################################
+update=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records/$record_identifier" \
+                     -H "X-Auth-Email: $auth_email" \
+                     -H "X-Auth-Key: $auth_key" \
+                     -H "Content-Type: application/json" \
+              --data "{\"id\":\"$zone_identifier\",\"type\":\"A\",\"proxied\":${proxy},\"name\":\"$record_name\",\"content\":\"$ip\"}")
+
+###########################################
+## Report the status
+###########################################
+case "$update" in
+*"\"success\":false"*)
+  message="$ip $record_name DDNS failed for $record_identifier ($ip). DUMPING RESULTS:\n$update"
+  >&2 echo -e "${message}" >> ~/log
+  exit 1;;
+*)
+  message="$ip $record_name DDNS updated."
+  echo "${message}" >> ~/log
+  exit 0;;
+esac