Update Readme

README.md

@@ -6,9 +6,9 @@ Plugin for Yourls that disallows blacklisted domains. Further, if YourlsBlacklis
 
 This plugin is intended to be used with YOURLS (cf. <https://yourls.org>)
 
-It has been tested on YOURLS v1.5.1 and YourlsBlacklistIPs v1.3
+It has been tested on YOURLS v1.9.2 and YourlsBlacklistIPs v1.3
 
-Current version is 0.04
+Current version is 0.07
 
 **INSTALL :**
 
@@ -41,6 +41,7 @@ Also thanks to [LudoBoggio](https://github.com/LudoBoggio) for the [YourlsBlackl
 
 ---------
 
+v0.07  Maingron added regex support
 v0.06  Alphabetize the blacklist
 v0.05  Fix all links being blocked
 v0.04  Fix https and not both https and http blocking  

plugin.php

@@ -45,13 +45,20 @@ function better_blacklist_domain_check( $shunt, $url ) {
             $blacklisted_domains = unserialize( $blacklisted_domains );
 
             foreach ( $blacklisted_domains as $blacklisted_domain ) {
-            // Use a regex to match the domain or subdomain
+                // Check if the entry starts with '/', then consider regex handling
+                if (strpos($blacklisted_domain, '/') === 0) {
+                    if (@preg_match($blacklisted_domain, $domain)) {
+                        return blacklist_fail_response();
+                    }
+                } else {
+                    // Otherwise treat as plain domain (old behavior)
                     $pattern = '/(?:^|\.)' . preg_quote( $blacklisted_domain, '/' ) . '$/i';
                     if ( preg_match( $pattern, $domain ) ) {
                         return blacklist_fail_response();
                     }
                 }
             }
+        }
 
         // No match, allow the URL
         return $shunt;
@@ -96,7 +103,29 @@ function better_blacklist_display_form() {
             <input type="hidden" name="action" value="blacklist_domain" />
             <input type="hidden" name="nonce" value="$nonce" />
             <p>Enter domains to blacklist (one per line):</p>
-        <textarea class="blacklist-domains" cols="60" rows="15" name="blacklist_form">$blacklist_domains</textarea>
+
+            <details>
+                <summary>Advanced Usage (Regex)</summary>
+                <div>
+                    <p>
+                        You can use regular expressions (Regex) to define more complex patterns for blacklisting domains.<br> 
+                        To use Regex, enter your pattern between slashes (/).<br>
+                        
+                        For example, to block all subdomains of example.com, you could enter <code>/\.example\.com$/i</code>.<br>
+                        The <kbd>i</kbd> flag at the end makes the match case-insensitive. Usually you want to use this flag.
+                    </p>
+
+                    <p>
+                        <b>Further examples:</b><br>
+                        <code>/.*\.xxx$/i</code> - Blocks all domains ending with .xxx<br>
+                        <br>
+
+                        Be cautious when using Regex, as incorrect patterns can lead to unintended blocking of domains.<br>
+                        Always test your Regex patterns to ensure they work as expected.
+                    </p>
+                </div>
+            </details><br>
+            <textarea class="blacklist-domains" cols="60" rows="15" name="blacklist_form" placeholder="Example: block.example.com">$blacklist_domains</textarea>
             <p><input type="submit" value="Save" /></p>
         </form>
     HTML;