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| #!/bin/bash | |
| # Initial data; they need to be filled by the user | |
| ## API token | |
| api_token=<api-token> | |
| email=<your-clodflare-email> | |
| zone_name=<root-domain-name> | |
| dns_record=<submdomain> # requires the full sub+domain ex. subdomain.root.com | |
| # Function to log messages with timestamp | |
| log() { | |
| local type="$1" | |
| local message="$2" | |
| echo "$(date '+%Y-%m-%d %H:%M:%S') [$type] $message" | |
| } | |
| log "INFO" "Script started." | |
| # Get the basic data | |
| log "INFO" "Fetching IPv4 and IPv6 addresses." | |
| ipv4=$(curl -s -X GET -4 https://ifconfig.co) | |
| ipv6=$(curl -s -X GET -6 https://ifconfig.co) | |
| log "INFO" "Verifying API token." | |
| user_id=$(curl -s -X GET "https://api.cloudflare.com/client/v4/user/tokens/verify" \ | |
| -H "Authorization: Bearer $api_token" \ | |
| -H "Content-Type:application/json" \ | |
| | jq -r '{"result"}[] | .id') | |
| if [ -z "$user_id" ]; then | |
| log "ERROR" "Invalid API token or email." | |
| exit 1 | |
| fi | |
| log "INFO" "User ID verified: $user_id" | |
| log "INFO" "Zone name: $zone_name" | |
| log "INFO" "DNS record: $dns_record" | |
| log "INFO" "IPv4: $ipv4" | |
| log "INFO" "IPv6: $ipv6" | |
| # Get the zone ID | |
| log "INFO" "Fetching Zone ID for $zone_name." | |
| zone_id=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones?name=$zone_name&status=active" \ | |
| -H "Content-Type: application/json" \ | |
| -H "X-Auth-Email: $email" \ | |
| -H "Authorization: Bearer $api_token" \ | |
| | jq -r '{"result"}[] | .[0] | .id') | |
| if [ -z "$zone_id" ]; then | |
| log "ERROR" "Unable to fetch Zone ID. Check if the Zone Name is correct." | |
| exit 1 | |
| fi | |
| log "INFO" "Zone ID fetched: $zone_id" | |
| # Update A record (IPv4) | |
| if [ -n "$ipv4" ]; then | |
| log "INFO" "Checking current A record for $dns_record." | |
| dns_record_a_id=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_id/dns_records?type=A&name=$dns_record" \ | |
| -H "Content-Type: application/json" \ | |
| -H "X-Auth-Email: $email" \ | |
| -H "Authorization: Bearer $api_token") | |
| dns_record_a_ip=$(echo $dns_record_a_id | jq -r '{"result"}[] | .[0] | .content') | |
| log "INFO" "Current IPv4 set on Cloudflare (A Record) is: $dns_record_a_ip" | |
| if [ "$dns_record_a_ip" != "$ipv4" ]; then | |
| log "INFO" "Updating A record with new IPv4." | |
| response=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$zone_id/dns_records/$(echo $dns_record_a_id | jq -r '{"result"}[] | .[0] | .id')" \ | |
| -H "Content-Type: application/json" \ | |
| -H "X-Auth-Email: $email" \ | |
| -H "Authorization: Bearer $api_token" \ | |
| --data "{\"type\":\"A\",\"name\":\"$dns_record\",\"content\":\"$ipv4\",\"ttl\":1,\"proxied\":false}" \ | |
| | jq -r '.errors') | |
| if [ -z "$response" ]; then | |
| log "INFO" "A record updated successfully." | |
| else | |
| log "ERROR" "Failed to update A record: $response" | |
| fi | |
| else | |
| log "INFO" "The current IPv4 and DNS record IPv4 are the same. No update needed." | |
| fi | |
| else | |
| log "WARNING" "Could not get your IPv4. Check your internet connection or https://ifconfig.co" | |
| fi | |
| # Update AAAA record (IPv6) | |
| if [ -n "$ipv6" ]; then | |
| log "INFO" "Checking current AAAA record for $dns_record." | |
| dns_record_aaaa_id=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_id/dns_records?type=AAAA&name=$dns_record" \ | |
| -H "Content-Type: application/json" \ | |
| -H "X-Auth-Email: $email" \ | |
| -H "Authorization: Bearer $api_token") | |
| dns_record_aaaa_ip=$(echo $dns_record_aaaa_id | jq -r '{"result"}[] | .[0] | .content') | |
| log "INFO" "Current IPv6 set on Cloudflare (AAAA Record) is: $dns_record_aaaa_ip" | |
| if [ "$dns_record_aaaa_ip" != "$ipv6" ]; then | |
| log "INFO" "Updating AAAA record with new IPv6." | |
| response=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$zone_id/dns_records/$(echo $dns_record_aaaa_id | jq -r '{"result"}[] | .[0] | .id')" \ | |
| -H "Content-Type: application/json" \ | |
| -H "X-Auth-Email: $email" \ | |
| -H "Authorization: Bearer $api_token" \ | |
| --data "{\"type\":\"AAAA\",\"name\":\"$dns_record\",\"content\":\"$ipv6\",\"ttl\":1,\"proxied\":false}" \ | |
| | jq -r '.errors') | |
| if [ -z "$response" ]; then | |
| log "INFO" "AAAA record updated successfully." | |
| else | |
| log "ERROR" "Failed to update AAAA record: $response" | |
| fi | |
| else | |
| log "INFO" "The current IPv6 and DNS record IPv6 are the same. No update needed." | |
| fi | |
| else | |
| log "WARNING" "Could not get your IPv6. Check your internet connection or https://ifconfig.co" | |
| fi | |
| log "INFO" "Script completed." |
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