40 lines
1.2 KiB
Bash
40 lines
1.2 KiB
Bash
#!/bin/bash
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# Cloudflare zone is the domain itself
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CLOUDFLARE_ZONE="your-domain.com"
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# DNS record to update
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DNS_RECORD="subdomain.your-domain.com"
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# Cloudflare API key
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API_KEY="your-cloudflare-api-key"
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# Cloudflare Email
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EMAIL="your-email@your-domain.com"
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# Fetch the current public IP
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CURRENT_IP=$(curl -s http://checkip.amazonaws.com/)
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# Fetch the previous public IP from file
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PREVIOUS_IP=$(cat /path/to/ipfile.txt)
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if [ "$CURRENT_IP" != "$PREVIOUS_IP" ]; then
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echo "IP has changed from $PREVIOUS_IP to $CURRENT_IP"
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# Fetch the DNS record id
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RECORD_ID=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$CLOUDFLARE_ZONE/dns_records?name=$DNS_RECORD&type=A" \
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-H "X-Auth-Email: $EMAIL" \
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-H "X-Auth-Key: $API_KEY" \
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-H "Content-Type: application/json" | jq -r .result[0].id)
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# Update the DNS record
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curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$CLOUDFLARE_ZONE/dns_records/$RECORD_ID" \
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-H "X-Auth-Email: $EMAIL" \
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-H "X-Auth-Key: $API_KEY" \
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-H "Content-Type: application/json" \
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--data '{"type":"A","name":"'"$DNS_RECORD"'","content":"'"$CURRENT_IP"'","ttl":1,"proxied":false}' | jq
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echo $CURRENT_IP > /path/to/ipfile.txt
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else
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echo "IP has not changed"
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fi
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