Added IPv6 support and updated base code
In addition, IPv4 and IPv6 regular expressions, code formatting, and descriptive comments have been updated.
This commit is contained in:
Wizman87
GitHub
parent
88c73e30f8
commit
da3a9462f9
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@ -1,123 +1,268 @@
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#!/bin/bash
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## change to "bin/sh" when necessary
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## When the system shell is required, replace the first line of the script with "#!/bin/sh"
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auth_email="" # The email used to login 'https://dash.cloudflare.com'
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auth_method="token" # Set to "global" for Global API Key or "token" for Scoped API Token
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auth_key="" # Your API Token or Global API Key
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zone_identifier="" # Can be found in the "Overview" tab of your domain
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record_name="" # Which record you want to be synced
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ttl="3600" # Set the DNS TTL (seconds)
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proxy="false" # Set the proxy to true or false
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sitename="" # Title of site "Example Site"
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slackchannel="" # Slack Channel #example
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slackuri="" # URI for Slack WebHook "https://hooks.slack.com/services/xxxxx"
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discorduri="" # URI for Discord WebHook "https://discordapp.com/api/webhooks/xxxxx"
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auth_email="" # Your account e-mail address; "Example@domain.com" (https://dash.cloudflare.com)
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auth_method="token" # Your account authentication method; Set to "global" for Global API Key or "token" for Scoped API Token
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auth_key="" # Your Global API Key or Scoped API Token; Located within the "API Tokens" section of your profile
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zone_identifier="" # Your Zone Identifier ID; Located within the "Overview" section of your domain
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record_name_A="" # The name of your A record; "www.example.com"
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record_name_AAAA="" # The name of your AAAA record; "www.example.com"
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ttl="1" # Set the DNS TTL (seconds); "1" for automatic or "3600" for default
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proxy="false" # Set the Proxy Status to "true" or "false"; "true" for Proxied or "false" for DNS Only
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website_name="" # The title of your website; "Example Website"
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slack_channel="" # The name of your Slack channel; "#channel"
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slack_uri="" # The URI of your Slack Webhook; "https://hooks.slack.com/services/xxxxx"
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discord_uri="" # The URI of your Discord Webhook; "https://discordapp.com/api/webhooks/xxxxx"
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###########################################
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## Check if we have a public IP
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###########################################
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ipv4_regex='([01]?[0-9]?[0-9]|2[0-4][0-9]|25[0-5])\.([01]?[0-9]?[0-9]|2[0-4][0-9]|25[0-5])\.([01]?[0-9]?[0-9]|2[0-4][0-9]|25[0-5])\.([01]?[0-9]?[0-9]|2[0-4][0-9]|25[0-5])'
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ip=$(curl -s -4 https://cloudflare.com/cdn-cgi/trace | grep -E '^ip'); ret=$?
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if [[ ! $ret == 0 ]]; then # In the case that cloudflare failed to return an ip.
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# Attempt to get the ip from other websites.
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ip=$(curl -s https://api.ipify.org || curl -s https://ipv4.icanhazip.com)
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#####################################
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## Check for a public IPv4 address ##
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#####################################
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ipv4_regex='((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])'
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ipv4=$(curl -s -4 https://cloudflare.com/cdn-cgi/trace | grep -E '^ip'); ret_ipv4=$?
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if [[ ! $ret_ipv4 == 0 ]]; then # In the case that Cloudflare failed to return a public IPv4 address.
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# Attempt to pull the public IPv4 address from another website.
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ipv4=$(curl -s https://api.ipify.org || curl -s https://ipv4.icanhazip.com)
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else
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# Extract just the ip from the ip line from cloudflare.
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ip=$(echo $ip | sed -E "s/^ip=($ipv4_regex)$/\1/")
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# Use regex to extract the public IPv4 address from the "ip=" line of the JSON data provided by Cloudflare.
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ipv4=$(echo $ipv4 | sed -E "s/^ip=($ipv4_regex)$/\1/")
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ipv4_valid="0"
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fi
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# Use regex to check for proper IPv4 format.
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if [[ ! $ip =~ ^$ipv4_regex$ ]]; then
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logger -s "DDNS Updater: Failed to find a valid IP."
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# Use regex to check whether the returned public IPv4 address is a valid IPv4 address.
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if [[ ! $ipv4 =~ ^$ipv4_regex$ ]]; then
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logger -s "DDNS Updater: Failed to return a valid public IPv4 address."
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ipv4_valid="1"
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fi
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#####################################
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## Check for a public IPv6 address ##
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#####################################
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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]))'
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ipv6=$(curl -s -6 https://cloudflare.com/cdn-cgi/trace | grep -E '^ip'); ret_ipv6=$?
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if [[ ! $ret_ipv6 == 0 ]]; then # In the case that Cloudflare failed to return a public IPv6 address.
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# Attempt to pull the public IPv6 address from another website.
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ipv6=$(curl -s https://api64.ipify.org || curl -s https://ipv6.icanhazip.com)
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else
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# Use regex to extract the public IPv6 address from the "ip=" line of the JSON provided by Cloudflare.
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ipv6=$(echo $ipv6 | sed -E "s/^ip=($ipv6_regex)$/\1/")
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ipv6_valid="0"
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fi
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# Use regex to check whether the returned public IPv6 address is a valid IPv6 address.
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if [[ ! $ipv6 =~ ^$ipv6_regex$ ]]; then
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logger -s "DDNS Updater: Failed to return a valid public IPv6 address."
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ipv6_valid="1"
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fi
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#############################################################
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## Check the returned public IPv4 address and IPv6 address ##
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#############################################################
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if [[ ! $ipv4_valid == 0 && ! $ipv6_valid == 0 ]]; then # In the case that the returned IPv4 address and IPv6 address are both invalid.
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# Exit the script with exit code 2: Misuse of shell builtins.
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exit 2
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fi
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###########################################
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## Check and set the proper auth header
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###########################################
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###################################
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## Set the authentication header ##
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###################################
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if [[ "${auth_method}" == "global" ]]; then
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auth_header="X-Auth-Key:"
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else
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auth_header="Authorization: Bearer"
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fi
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###########################################
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## Seek for the A record
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###########################################
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logger "DDNS Updater: Check Initiated"
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record=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records?type=A&name=$record_name" \
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######################
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## Get the A record ##
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######################
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logger "DDNS Updater: Check initiated for A record."
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record_A=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records?type=A&name=$record_name_A" \
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-H "X-Auth-Email: $auth_email" \
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-H "$auth_header $auth_key" \
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-H "Content-Type: application/json")
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###########################################
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## Check if the domain has an A record
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###########################################
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if [[ $record == *"\"count\":0"* ]]; then
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logger -s "DDNS Updater: Record does not exist, perhaps create one first? (${ip} for ${record_name})"
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####################################
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## Check for an existing A record ##
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####################################
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if [[ $record_A == *"\"count\":0"* ]]; then
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logger -s "DDNS Updater: A record does not exist. Create one first? (${ipv4} for ${record_name_A})"
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record_A_valid="1"
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else
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record_A_valid="0"
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fi
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#########################
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## Get the AAAA record ##
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#########################
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logger "DDNS Updater: Check initiated for AAAA record."
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record_AAAA=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records?type=AAAA&name=$record_name_AAAA" \
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-H "X-Auth-Email: $auth_email" \
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-H "$auth_header $auth_key" \
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-H "Content-Type: application/json")
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#######################################
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## Check for an existing AAAA record ##
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#######################################
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if [[ $record_AAAA == *"\"count\":0"* ]]; then
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logger -s "DDNS Updater: AAAA record does not exist. Create one first? (${ipv6} for ${record_name_AAAA})"
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record_AAAA_valid="1"
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else
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record_AAAA_valid="0"
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fi
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#################################################
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## Check the returned A record and AAAA record ##
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#################################################
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if [[ ! $record_A_valid == 0 && ! $record_AAAA_valid == 0 ]]; then # In the case both the returned A record and AAAA record do not exist.
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# Exit the script with exit code 1: General errors.
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exit 1
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fi
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###########################################
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## Get existing IP
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###########################################
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old_ip=$(echo "$record" | sed -E 's/.*"content":"(([0-9]{1,3}\.){3}[0-9]{1,3})".*/\1/')
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# Compare if they're the same
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if [[ $ip == $old_ip ]]; then
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logger "DDNS Updater: IP ($ip) for ${record_name} has not changed."
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#####################################################################
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## Check the returned A record for an existing public IPv4 address ##
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#####################################################################
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old_ipv4=$(echo "$record_A" | sed -E 's/.*"content":"('$ipv4_regex')".*/\1/')
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if [[ $ipv4 == $old_ipv4 ]]; then # Use regex to compare whether the returned public IPv4 address and existing public IPv4 address are the same.
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logger "DDNS Updater: The IPv4 address ($ipv4) for ${record_name_A} has not changed."
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old_ipv4_valid="1"
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else
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old_ipv4_valid="0"
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fi
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########################################################################
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## Check the returned AAAA record for an existing public IPv6 address ##
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########################################################################
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old_ipv6=$(echo "$record_AAAA" | sed -E 's/.*"content":"('$ipv6_regex')".*/\1/')
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if [[ $ipv6 == $old_ipv6 ]]; then # Use regex to compare whether the returned public IPv6 address and existing public IPv6 address are the same.
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logger "DDNS Updater: The IPv6 address ($ipv6) for ${record_name_AAAA} has not changed."
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old_ipv6_valid="1"
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else
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old_ipv6_valid="0"
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fi
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####################################################################
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## Check the existing public IPv4 address and public IPv6 address ##
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####################################################################
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if [[ ! $record_ipv4_valid == 0 && ! $old_ipv6_valid == 0 ]]; then # In the case both the existing public IPv4 address and public IPv6 address have not changed.
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# Exit the script with exit code 0: Success.
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exit 0
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fi
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###########################################
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## Set the record identifier from result
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###########################################
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record_identifier=$(echo "$record" | sed -E 's/.*"id":"(\w+)".*/\1/')
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##################################################
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## Set the A record and AAAA record identifiers ##
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##################################################
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record_identifier_A=$(echo "$record_A" | sed -E 's/.*"id":"(\w+)".*/\1/')
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record_identifier_AAAA=$(echo "$record_AAAA" | sed -E 's/.*"id":"(\w+)".*/\1/')
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###########################################
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## Change the IP@Cloudflare using the API
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###########################################
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update=$(curl -s -X PATCH "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records/$record_identifier" \
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####################################
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## Update the public IPv4 address ##
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####################################
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update_ipv4=$(curl -s -X PATCH "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records/$record_identifier_A" \
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-H "X-Auth-Email: $auth_email" \
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-H "$auth_header $auth_key" \
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-H "Content-Type: application/json" \
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--data "{\"type\":\"A\",\"name\":\"$record_name\",\"content\":\"$ip\",\"ttl\":\"$ttl\",\"proxied\":${proxy}}")
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--data "{\"type\":\"A\",\"name\":\"$record_name_A\",\"content\":\"$ipv4\",\"ttl\":\"$ttl\",\"proxied\":${proxy}}")
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###########################################
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## Report the status
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###########################################
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case "$update" in
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####################################
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## Update the public IPv6 address ##
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####################################
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update_v6=$(curl -s -X PATCH "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records/$record_identifier_AAAA" \
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-H "X-Auth-Email: $auth_email" \
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-H "$auth_header $auth_key" \
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-H "Content-Type: application/json" \
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--data "{\"type\":\"AAAA\",\"name\":\"$record_name_AAAA\",\"content\":\"$ipv6\",\"ttl\":\"$ttl\",\"proxied\":${proxy}}")
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#########################################################
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## Report the update status of the public IPv4 address ##
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#########################################################
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case "$update_ipv4" in
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*"\"success\":false"*)
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echo -e "DDNS Updater: $ip $record_name DDNS failed for $record_identifier ($ip). DUMPING RESULTS:\n$update" | logger -s
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if [[ $slackuri != "" ]]; then
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curl -L -X POST $slackuri \
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echo -e "DDNS Updater: $ipv4 $record_name_A DDNS failed for $record_identifier_A ($ipv4). Dumping results:\n$update_ipv4" | logger -s
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if [[ $slack_uri != "" ]]; then
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curl -L -X POST $slack_uri \
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--data-raw '{
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"channel": "'$slackchannel'",
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"text" : "'"$sitename"' DDNS Update Failed: '$record_name': '$record_identifier' ('$ip')."
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"channel": "'$slack_channel'",
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"text" : "'"$website_name"' DDNS Updater: Failed for '$record_name_A': '$record_identifier_A' ('$ipv4')."
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}'
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fi
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if [[ $discorduri != "" ]]; then
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if [[ $discord_uri != "" ]]; then
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curl -i -H "Accept: application/json" -H "Content-Type:application/json" -X POST \
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--data-raw '{
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"content" : "'"$sitename"' DDNS Update Failed: '$record_name': '$record_identifier' ('$ip')."
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}' $discorduri
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"content" : "'"$website_name"' DDNS Updater: Failed for '$record_name_A': '$record_identifier_A' ('$ipv4')."
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}' $discord_uri
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fi
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exit 1;;
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update_ipv4_valid="1"
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;;
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*)
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logger "DDNS Updater: $ip $record_name DDNS updated."
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if [[ $slackuri != "" ]]; then
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curl -L -X POST $slackuri \
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if [[ $slack_uri != "" ]]; then
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curl -L -X POST $slack_uri \
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--data-raw '{
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"channel": "'$slackchannel'",
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"text" : "'"$sitename"' Updated: '$record_name''"'"'s'""' new IP Address is '$ip'"
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"channel": "'$slack_channel'",
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"text" : "'"$website_name"' Updated: '$record_name_A''"'"'s'""' new IP Address is '$ipv4'"
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}'
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fi
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if [[ $discorduri != "" ]]; then
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if [[ $discord_uri != "" ]]; then
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curl -i -H "Accept: application/json" -H "Content-Type:application/json" -X POST \
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--data-raw '{
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"content" : "'"$sitename"' Updated: '$record_name''"'"'s'""' new IP Address is '$ip'"
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}' $discorduri
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"content" : "'"$website_name"' Updated: '$record_name_A''"'"'s'""' new IP Address is '$ipv4'"
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}' $discord_uri
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fi
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exit 0;;
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logger "DDNS Updater: $ipv4 $record_name_A DDNS updated successfully."
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update_ipv4_valid="0"
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;;
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esac
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#########################################################
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## Report the update status of the public IPv6 address ##
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#########################################################
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case "$update_ipv6" in
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*"\"success\":false"*)
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echo -e "DDNS Updater: $ipv6 $record_name_AAAA DDNS failed for $record_identifier_AAAA ($ipv6). Dumping results:\n$update_ipv6" | logger -s
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if [[ $slack_uri != "" ]]; then
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curl -L -X POST $slack_uri \
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--data-raw '{
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"channel": "'$slack_channel'",
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"text" : "'"$website_name"' DDNS Updater: Failed for '$record_name_AAAA': '$record_identifier_AAAA' ('$ipv6')."
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}'
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fi
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if [[ $discord_uri != "" ]]; then
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curl -i -H "Accept: application/json" -H "Content-Type:application/json" -X POST \
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--data-raw '{
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"content" : "'"$website_name"' DDNS Updater: Failed for '$record_name_AAAA': '$record_identifier_AAAA' ('$ipv6')."
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}' $discord_uri
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fi
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update_ipv6_valid="1"
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;;
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*)
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if [[ $slack_uri != "" ]]; then
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curl -L -X POST $slack_uri \
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--data-raw '{
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"channel": "'$slack_channel'",
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"text" : "'"$website_name"' Updated: '$record_name_AAAA''"'"'s'""' new IPv6 Address is '$ipv6'"
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}'
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fi
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if [[ $discord_uri != "" ]]; then
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curl -i -H "Accept: application/json" -H "Content-Type:application/json" -X POST \
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--data-raw '{
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"content" : "'"$website_name"' Updated: '$record_name_AAAA''"'"'s'""' new IPv6 Address is '$ipv6'"
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}' $discord_uri
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fi
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logger "DDNS Updater: $ipv6 $record_name_AAAA DDNS updated successfully."
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update_ipv6_valid="0"
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;;
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esac
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################################################################################
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## Check the update status of the public IPv4 address and public IPv6 address ##
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################################################################################
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if [[ ! $update_ipv4_valid == 0 || ! $update_ipv6_valid == 0 ]]; then # In the case the update status of either the public IPv4 address or public IPv6 address are invalid.
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# Exit the script with exit code 1: General errors.
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exit 1
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else
|
||||
# Exit the script with exit code 0: Success.
|
||||
exit 0
|
||||
fi
|
||||
|
||||
# End of the script
|
||||
# Exit the script with exit code 0: Success.
|
||||
exit 0
|
||||
|
|
|
|||
Loading…
Reference in New Issue