1 files changed, 93 insertions, 0 deletions
diff --git a/user/plugins/random-shorturls/plugin.php b/user/plugins/random-shorturls/plugin.php
new file mode 100644
index 0000000..4f381af
--- /dev/null
+++ b/user/plugins/random-shorturls/plugin.php
@@ -0,0 +1,93 @@
+<?php
+/*
+Plugin Name: Random ShortURLs
+Plugin URI: https://yourls.org/
+Description: Assign random keywords to shorturls, like bitly (sho.rt/hJudjK)
+Version: 1.2
+Author: Ozh
+Author URI: https://ozh.org/
+*/
+
+/* Release History:
+*
+* 1.0 Initial release
+* 1.1 Added: don't increment sequential keyword counter & save one SQL query
+* Fixed: plugin now complies to character set defined in config.php
+* 1.2 Adopted as YOURLS core plugin under a new name
+* Now configured via YOURLS options instead of editing plugin file
+*/
+
+// No direct call
+if( !defined( 'YOURLS_ABSPATH' ) ) die();
+
+// Only register things if the old third-party plugin is not present
+if( function_exists('ozh_random_keyword') ) {
+    yourls_add_notice( "<b>Random ShortURLs</b> plugin cannot function unless <b>Random Keywords</b> is removed first." );
+} else {
+    // filter registration happens conditionally, to avoid conflicts
+    // settings action is left out here, as it allows checking settings before deleting the old plugin
+    yourls_add_filter( 'random_keyword', 'ozh_random_shorturl' );
+    yourls_add_filter( 'get_next_decimal', 'ozh_random_shorturl_next_decimal' );
+}
+
+// Generate a random keyword
+function ozh_random_shorturl() {
+    $possible = yourls_get_shorturl_charset() ;
+    $str='';
+    while( strlen( $str ) < yourls_get_option( 'random_shorturls_length', 5 ) ) {
+        $str .= substr($possible, rand( 0, strlen( $possible ) - 1 ), 1 );
+    }
+    return $str;
+}
+
+// Don't increment sequential keyword tracker
+function ozh_random_shorturl_next_decimal( $next ) {
+    return ( $next - 1 );
+}
+
+// Plugin settings page etc.
+yourls_add_action( 'plugins_loaded', 'ozh_random_shorturl_add_settings' );
+function ozh_random_shorturl_add_settings() {
+    yourls_register_plugin_page( 'random_shorturl_settings', 'Random ShortURLs Settings', 'ozh_random_shorturl_settings_page' );
+}
+
+function ozh_random_shorturl_settings_page() {
+    // Check if form was submitted
+    if( isset( $_POST['random_length'] ) ) {
+        // If so, verify nonce
+        yourls_verify_nonce( 'random_shorturl_settings' );
+        // and process submission if nonce is valid
+        ozh_random_shorturl_settings_update();
+    }
+
+    $random_length = yourls_get_option('random_shorturls_length');
+    $nonce = yourls_create_nonce( 'random_shorturl_settings' );
+
+    echo <<<HTML
+        <main>
+            <h2>Random ShortURLs Settings</h2>
+            <form method="post">
+            <input type="hidden" name="nonce" value="$nonce" />
+            <p>
+                <label>Random Keyword Length</label>
+                <input type="number" name="random_length" min="1" max="128" value="$random_length" />
+            </p>
+            <p><input type="submit" value="Save" class="button" /></p>
+            </form>
+        </main>
+HTML;
+}
+
+function ozh_random_shorturl_settings_update() {
+    $random_length = $_POST['random_length'];
+
+    if( $random_length ) {
+        if( is_numeric( $random_length ) ) {
+            yourls_update_option( 'random_shorturls_length', intval( $random_length ) );
+        } else {
+            echo "Error: Length given was not a number.";
+        }
+    } else {
+        echo "Error: No length value given.";
+    }
+}