From 406bccf01c6dc7aad27bcedf1be54ee4eeb219ec Mon Sep 17 00:00:00 2001
From: Joel Gray <joeltgray@gmail.com>
Date: Sun, 23 Jun 2024 13:03:29 +0100
Subject: [PATCH] Remove support for V6 as I don't use it

---
 cloudflare-dns-updater-v6.sh | 186 -----------------------------------
 1 file changed, 186 deletions(-)
 delete mode 100644 cloudflare-dns-updater-v6.sh

diff --git a/cloudflare-dns-updater-v6.sh b/cloudflare-dns-updater-v6.sh
deleted file mode 100644
index f393031..0000000
--- a/cloudflare-dns-updater-v6.sh
+++ /dev/null
@@ -1,186 +0,0 @@
-#!/bin/bash
-## change to "bin/sh" when necessary
-
-##############  CLOUDFLARE CREDENTIALS  ##############
-# @auth_email           - The email used to login 'https://dash.cloudflare.com'
-# @auth_method          - Set to "global" for Global API Key or "token" for Scoped API Token
-# @auth_key             - Your API Token or Global API Key
-# @zone_identifier      - Can be found in the "Overview" tab of your domain
-# -------------------------------------------------- #
-auth_email=""
-auth_method="token"
-auth_key=""
-zone_identifier=""
-
-#############  DNS RECORD CONFIGURATION  #############
-# @record_name          - Which record you want to be synced
-# @ttl                  - DNS TTL (seconds), can be set between (30 if enterprise) 60 and 86400 seconds, or 1 for Automatic
-# @proxy                - Set the proxy to true or false
-# -------------------------------------------------- #
-record_name=""
-ttl="3600"
-proxy="false"
-
-###############  SCRIPT CONFIGURATION  ###############
-# @static_IPv6_mode     - Useful if you are using EUI-64 IPv6 address with SLAAC IPv6 suffix token. (Privacy Extensions)
-#                       + Or some kind of static IPv6 assignment from DHCP server configuration, etc
-#                       + If set to false, the IPv6 address will be acquired from external services
-# @last_notable_hexes   - Used with `static_IPv6_mode`. Configure this to target what specific IPv6 address to search for
-#                       + E.g. Your global primary IPv6 address is 2404:6800:4001:80e::59ec:ab12:34cd, then
-#                       + You can put values (i.e. static suffixes) such as "34cd", "ab12:34cd" and etc
-# @log_header_name      - Header name used for logs
-# -------------------------------------------------- #
-static_IPv6_mode="false"
-last_notable_hexes="ffff:ffff"
-log_header_name="DDNS Updater_v6"
-
-#############  WEBHOOKS CONFIGURATION  ###############
-# @sitename             - Title of site "Example Site"
-# @slackchannel         - Slack Channel #example
-# @slackuri             - URI for Slack WebHook "https://hooks.slack.com/services/xxxxx"
-# @discorduri           - URI for Discord WebHook "https://discordapp.com/api/webhooks/xxxxx"
-# -------------------------------------------------- #
-sitename=""
-slackchannel=""
-slackuri=""
-discorduri=""
-
-
-
-################################################
-## Make sure we have a valid IPv6 connection
-################################################
-if ! { curl -6 -s --head --fail https://ipv6.google.com >/dev/null; }; then
-    logger -s "$log_header_name: Unable to establish a valid IPv6 connection to a known host."
-    exit 1
-fi
-
-################################################
-## Finding our IPv6 address
-################################################
-# Regex credits to https://stackoverflow.com/a/17871737
-ipv6_regex="(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))"
-
-if $static_IPv6_mode; then
-    # Test whether 'ip' command is available
-    if { command -v "ip" &>/dev/null; }; then
-        ip=$(ip -6 -o addr show scope global primary -deprecated | grep -oE "$ipv6_regex" | grep -oE ".*($last_notable_hexes)$")
-    else
-        # Fall back to 'ifconfig' command
-        ip=$(ifconfig | grep -oE "$ipv6_regex" | grep -oE ".*($last_notable_hexes)$")
-    fi
-else
-    # Use external services to discover our system's preferred IPv6 address
-    ip=$(curl -s -6 https://cloudflare.com/cdn-cgi/trace | grep -E '^ip')
-    ret=$?
-    if [[ ! $ret == 0 ]]; then # In the case that cloudflare failed to return an ip.
-        # Attempt to get the ip from other websites.
-        ip=$(curl -s -6 https://api64.ipify.org || curl -s -6 https://ipv6.icanhazip.com)
-    else
-        # Extract just the ip from the ip line from cloudflare.
-        ip=$(echo $ip | sed -E "s/^ip=($ipv6_regex)$/\1/")
-    fi
-fi
-
-# Check point: Make sure the collected IPv6 address is valid
-if [[ ! $ip =~ ^$ipv6_regex$ ]]; then
-    logger -s "$log_header_name: Failed to find a valid IPv6 address."
-    exit 1
-fi
-
-################################################
-## Check and set the proper auth header
-################################################
-if [[ "${auth_method}" == "global" ]]; then
-    auth_header="X-Auth-Key:"
-else
-    auth_header="Authorization: Bearer"
-fi
-
-################################################
-## Seek for the AAAA record
-################################################
-logger "$log_header_name: Check Initiated"
-record=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records?type=AAAA&name=$record_name" \
-    -H "X-Auth-Email: $auth_email" \
-    -H "$auth_header $auth_key" \
-    -H "Content-Type: application/json")
-
-################################################
-## Check if the domain has an AAAA record
-################################################
-if [[ $record == *"\"count\":0"* ]]; then
-    logger -s "$log_header_name: Record does not exist, perhaps create one first? (${ip} for ${record_name})"
-    exit 1
-fi
-
-################################################
-## Get existing IP
-################################################
-old_ip=$(echo "$record" | sed -E 's/.*"content":"'${ipv6_regex}'".*/\1/')
-
-# Make sure the extracted IPv6 address is valid
-if [[ ! $old_ip =~ ^$ipv6_regex$ ]]; then
-    logger -s "$log_header_name: Unable to extract existing IPv6 address from DNS record."
-    exit 1
-fi
-
-# Compare if they're the same
-if [[ $ip == $old_ip ]]; then
-    logger "$log_header_name: IP ($ip) for ${record_name} has not changed."
-    exit 0
-fi
-
-################################################
-## Set the record identifier from result
-################################################
-record_identifier=$(echo "$record" | sed -E 's/.*"id":"([A-Za-z0-9_]+)".*/\1/')
-
-################################################
-## Change the IP@Cloudflare using the API
-################################################
-update=$(curl -s -X PATCH "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records/$record_identifier" \
-    -H "X-Auth-Email: $auth_email" \
-    -H "$auth_header $auth_key" \
-    -H "Content-Type: application/json" \
-    --data "{\"content\":\"$ip\",\"ttl\":\"$ttl\",\"proxied\":$proxy}")
-
-################################################
-## Report the status
-################################################
-case "$update" in
-*"\"success\":false"*)
-    echo -e "$log_header_name: $ip $record_name DDNS failed for $record_identifier ($ip). DUMPING RESULTS:\n$update" | logger -s
-    if [[ $slackuri != "" ]]; then
-        curl -L -X POST $slackuri \
-            --data-raw "{
-                \"channel\": \"$slackchannel\",
-                \"text\": \"$sitename DDNS Update Failed: $record_name: $record_identifier ($ip).\"
-            }"
-    fi
-    if [[ $discorduri != "" ]]; then
-        curl -i -H "Accept: application/json" -H "Content-Type:application/json" -X POST \
-            --data-raw "{
-                \"content\": \"$sitename DDNS Update Failed: $record_name: $record_identifier ($ip).\"
-            }" $discorduri
-    fi
-    exit 1
-    ;;
-*)
-    logger "$log_header_name: $ip $record_name DDNS updated."
-    if [[ $slackuri != "" ]]; then
-        curl -L -X POST $slackuri \
-            --data-raw "{
-                \"channel\": \"$slackchannel\",
-                \"text\": \"$sitename Updated: $record_name's new IPv6 Address is $ip\"
-            }"
-    fi
-    if [[ $discorduri != "" ]]; then
-        curl -i -H "Accept: application/json" -H "Content-Type:application/json" -X POST \
-            --data-raw "{
-                \"content\": \"$sitename Updated: $record_name's new IPv6 Address is $ip\"
-            }" $discorduri
-    fi
-    exit 0
-    ;;
-esac