Merge 8383de8a9d into ac2f74f980
Justin He
1 year ago
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GitHub
commit
3ae9a68a9c
1 changed files with 118 additions and 86 deletions
@ -1,123 +1,155 @@ |
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#!/bin/bash |
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## change to "bin/sh" when necessary |
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|
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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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|
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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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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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############## CLOUDFLARE CREDENTIALS ############## |
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# @auth_email - The email used to login 'https://dash.cloudflare.com' |
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# @auth_method - 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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# -------------------------------------------------- # |
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auth_email="" |
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auth_method="token" |
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auth_key="" |
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zone_identifier="" |
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|
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############# DNS RECORD CONFIGURATION ############# |
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# @record_name - Which record you want to be synced |
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# @ttl - DNS TTL (seconds), can be set between (30 if enterprise) 60 and 86400 seconds, or 1 for Automatic |
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# @proxy - Set the proxy to true or false |
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# -------------------------------------------------- # |
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record_name="" |
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ttl="3600" |
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proxy="false" |
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|
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############### SCRIPT CONFIGURATION ############### |
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# @log_header_name - Header name used for logs |
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# -------------------------------------------------- # |
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log_header_name="DDNS Updater" |
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|
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############# WEBHOOKS CONFIGURATION ############### |
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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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# -------------------------------------------------- # |
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sitename="" |
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slackchannel="" |
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slackuri="" |
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discorduri="" |
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################################################ |
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## Make sure we have a valid IPv4 connection |
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################################################ |
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if ! { curl -4 -s --head --fail https://ipv4.google.com >/dev/null; }; then |
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logger -s "$log_header_name: Unable to establish a valid IPv4 connection to a known host." |
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exit 1 |
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fi |
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|
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# Use regex to check for proper IPv4 format. |
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################################################ |
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## Finding our IPv4 address |
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################################################ |
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ip=$(curl -s -4 https://api.ipify.org || curl -s -4 https://ipv4.icanhazip.com) |
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# Check point: Make sure the collected IPv4 address is valid |
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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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if [[ ! $ip =~ ^$ipv4_regex$ ]]; then |
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logger -s "DDNS Updater: Failed to find a valid IP." |
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exit 2 |
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logger -s "$log_header_name: Failed to find a valid IPv4 address." |
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exit 1 |
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fi |
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########################################### |
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################################################ |
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## Check and set the proper auth header |
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########################################### |
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################################################ |
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if [[ "${auth_method}" == "global" ]]; then |
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auth_header="X-Auth-Key:" |
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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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auth_header="Authorization: Bearer" |
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fi |
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########################################### |
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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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################################################ |
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logger "$log_header_name: Check Initiated" |
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record=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records?type=A&name=$record_name" \ |
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-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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-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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################################################ |
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## Check if the domain has an A record |
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########################################### |
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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 ${record_name})" |
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exit 1 |
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logger -s "$log_header_name: Record does not exist, perhaps create one first? (${ip} for ${record_name})" |
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exit 1 |
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fi |
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########################################### |
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################################################ |
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## Get existing IP |
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########################################### |
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################################################ |
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old_ip=$(echo "$record" | sed -E 's/.*"content":"(([0-9]{1,3}\.){3}[0-9]{1,3})".*/\1/') |
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# Make sure the extracted IPv4 address is valid |
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if [[ ! $old_ip =~ ^$ipv4_regex$ ]]; then |
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logger -s "$log_header_name: Unable to extract existing IPv4 address from DNS record." |
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exit 1 |
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fi |
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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 ${record_name} has not changed." |
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exit 0 |
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logger "$log_header_name: IP ($ip) for ${record_name} has not changed." |
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exit 0 |
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fi |
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########################################### |
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################################################ |
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## Set the record identifier from result |
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########################################### |
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################################################ |
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record_identifier=$(echo "$record" | sed -E 's/.*"id":"([A-Za-z0-9_]+)".*/\1/') |
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########################################### |
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################################################ |
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## Change the IP@Cloudflare using the API |
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########################################### |
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################################################ |
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update=$(curl -s -X PATCH "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records/$record_identifier" \ |
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-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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-H "X-Auth-Email: $auth_email" \ |
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-H "$auth_header $auth_key" \ |
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-H "Content-Type: application/json" \ |
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--data "{\"content\":\"$ip\",\"ttl\":\"$ttl\",\"proxied\":$proxy}") |
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########################################### |
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################################################ |
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## Report the status |
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########################################### |
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################################################ |
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case "$update" 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 $slackuri \ |
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--data-raw '{ |
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"channel": "'$slackchannel'", |
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"text" : "'"$sitename"' DDNS Update Failed: '$record_name': '$record_identifier' ('$ip')." |
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}' |
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fi |
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if [[ $discorduri != "" ]]; then |
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curl -i -H "Accept: application/json" -H "Content-Type:application/json" -X POST \ |
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--data-raw '{ |
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"content" : "'"$sitename"' DDNS Update Failed: '$record_name': '$record_identifier' ('$ip')." |
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}' $discorduri |
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fi |
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exit 1;; |
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echo -e "$log_header_name: $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 $slackuri \ |
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--data-raw "{ |
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\"channel\": \"$slackchannel\", |
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\"text\": \"$sitename DDNS Update Failed: $record_name: $record_identifier ($ip).\" |
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}" |
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fi |
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if [[ $discorduri != "" ]]; then |
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curl -i -H "Accept: application/json" -H "Content-Type:application/json" -X POST \ |
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--data-raw "{ |
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\"content\": \"$sitename DDNS Update Failed: $record_name: $record_identifier ($ip).\" |
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}" $discorduri |
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fi |
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exit 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 $slackuri \ |
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--data-raw '{ |
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"channel": "'$slackchannel'", |
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"text" : "'"$sitename"' Updated: '$record_name''"'"'s'""' new IP Address is '$ip'" |
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}' |
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fi |
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if [[ $discorduri != "" ]]; then |
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curl -i -H "Accept: application/json" -H "Content-Type:application/json" -X POST \ |
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--data-raw '{ |
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"content" : "'"$sitename"' Updated: '$record_name''"'"'s'""' new IP Address is '$ip'" |
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}' $discorduri |
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fi |
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exit 0;; |
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logger "$log_header_name: $ip $record_name DDNS updated." |
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if [[ $slackuri != "" ]]; then |
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curl -L -X POST $slackuri \ |
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--data-raw "{ |
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\"channel\": \"$slackchannel\", |
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\"text\": \"$sitename Updated: $record_name's new IPv4 Address is $ip\" |
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}" |
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fi |
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if [[ $discorduri != "" ]]; then |
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curl -i -H "Accept: application/json" -H "Content-Type:application/json" -X POST \ |
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--data-raw "{ |
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\"content\": \"$sitename Updated: $record_name's new IPv4 Address is $ip\" |
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}" $discorduri |
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fi |
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exit 0 |
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;; |
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esac |
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