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dinamic/gist:335bb0ed0e73e1b6af3b3f59c9fe08d1

Last active March 4, 2021 13:40
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  1. dinamic revised this gist Mar 4, 2021. 1 changed file with 1 addition and 2 deletions.
    3 changes: 1 addition & 2 deletions gistfile1.txt
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    ###
    # Cloudflare API DDNS update script
    # Heavily inspired by https://gist.github.com/lifehome/eb3f7d798f9bc6720cdc7d2be1238d4f
    #
    # Requirements: jq, curl
    #
    # Heavily inspired by https://gist.github.com/lifehome/eb3f7d798f9bc6720cdc7d2be1238d4f
    ###

    auth_token="XXXXXXXXXXXXXXX" # Token generated from "My profile > API Tokens"
  2. dinamic revised this gist Mar 4, 2021. 1 changed file with 2 additions and 0 deletions.
    2 changes: 2 additions & 0 deletions gistfile1.txt
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    @@ -4,6 +4,8 @@
    # Cloudflare API DDNS update script
    #
    # Requirements: jq, curl
    #
    # Heavily inspired by https://gist.github.com/lifehome/eb3f7d798f9bc6720cdc7d2be1238d4f
    ###

    auth_token="XXXXXXXXXXXXXXX" # Token generated from "My profile > API Tokens"
  3. dinamic created this gist Mar 4, 2021.
    51 changes: 51 additions & 0 deletions gistfile1.txt
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    #!/bin/bash

    ###
    # Cloudflare API DDNS update script
    #
    # Requirements: jq, curl
    ###

    auth_token="XXXXXXXXXXXXXXX" # Token generated from "My profile > API Tokens"
    zone_identifier="XXXXXXX" # Can be found in the "Overview" tab of your domain
    record_name="my.hostname.example.com" # Which record you want to be synced

    # DO NOT CHANGE LINES BELOW
    #ip=$(curl -s https://ipv4.icanhazip.com/)
    ip=$(curl -s https://ifconfig.me/ip)

    # SCRIPT START
    echo "[Cloudflare DDNS] Check Initiated"

    # Seek for the record
    record=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records?name=$record_name" -H "Authorization: Bearer $auth_token" -H "Content-Type: application/json")

    # Can't do anything without the record
    if [[ $record == *"\"count\":0"* ]]; then
    >&2 echo -e "[Cloudflare DDNS] Record does not exist, perhaps create one first?"
    exit 1
    fi

    # Set existing IP address from the fetched record
    old_ip=$(echo "$record" | jq -r ".result[0].content")

    # Compare if they're the same
    if [ $ip == $old_ip ]; then
    echo "[Cloudflare DDNS] IP address has not changed."
    exit 0
    fi

    # Set the record identifier from result
    record_identifier=$(echo "$record" | jq -r ".result[0].id")

    # The execution of update
    update=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records/$record_identifier" -H "Authorization: Bearer $auth_token" -H "Content-Type: application/json" --data "{\"id\":\"$zone_identifier\",\"type\":\"A\",\"proxied\":false,\"name\":\"$record_name\",\"content\":\"$ip\"}")

    # The moment of truth
    case "$update" in
    *"\"success\":false"*)
    >&2 echo -e "[Cloudflare DDNS] Update failed for $record_identifier. DUMPING RESULTS:\n$update"
    exit 1;;
    *)
    echo "[Cloudflare DDNS] IPv4 context '$ip' has been synced to Cloudflare.";;
    esac