├── license ├── plugin-blacklist.php └── readme.md /license: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /plugin-blacklist.php: -------------------------------------------------------------------------------- 1 | $message, 'type' => $type ]; 96 | add_action( 'admin_notices', function() use ( &$notices ) { 97 | foreach ( $notices as $notice ) { 98 | echo '

' . wp_kses_post( $notice['message'] ) . '

'; 99 | } 100 | $notices = []; 101 | }); 102 | } 103 | 104 | // Force deactivate blacklisted plugins 105 | function pbm_force_deactivate_blacklisted_plugins() { 106 | $blacklist_data = pbm_load_blacklist(); 107 | $blacklisted_plugins = $blacklist_data['blacklist'] ?? []; 108 | 109 | if ( empty( $blacklisted_plugins ) ) { 110 | return; // No blacklisted plugins to deactivate 111 | } 112 | 113 | $active_plugins = get_option( 'active_plugins', [] ); 114 | $deactivated_plugins = []; 115 | 116 | foreach ( $active_plugins as $plugin ) { 117 | $plugin_slug = pbm_get_plugin_slug( $plugin ); 118 | if ( pbm_is_name_blacklisted( $plugin_slug, $blacklisted_plugins ) ) { 119 | deactivate_plugins( $plugin ); // Deactivate the plugin 120 | $deactivated_plugins[] = $plugin_slug; 121 | } 122 | } 123 | 124 | // Display notice if any plugins were deactivated 125 | if ( ! empty( $deactivated_plugins ) ) { 126 | pbm_add_admin_notice( 127 | 'The following blacklisted plugins have been deactivated: ' . implode( ', ', $deactivated_plugins ) . '. Please remove them.', 128 | 'error' 129 | ); 130 | } 131 | } 132 | add_action( 'admin_init', 'pbm_force_deactivate_blacklisted_plugins' ); 133 | 134 | // Prevent activation of blacklisted plugins 135 | function pbm_prevent_plugin_activation( $plugin ) { 136 | $blacklist_data = pbm_load_blacklist(); 137 | $plugin_slug = pbm_get_plugin_slug( $plugin ); 138 | 139 | if ( pbm_is_name_blacklisted( $plugin_slug, $blacklist_data['blacklist'] ?? [] ) ) { 140 | wp_die( 141 | 'The plugin ' . wp_kses_post( $plugin_slug ) . ' is blacklisted and cannot be activated. Please choose another plugin.', 142 | 'Plugin Activation Error', 143 | [ 'back_link' => true ] 144 | ); 145 | } 146 | } 147 | add_action( 'activate_plugin', 'pbm_prevent_plugin_activation' ); 148 | 149 | // Display notices for graylisted and utility plugins 150 | function pbm_display_graylist_and_utility_notices() { 151 | $blacklist_data = pbm_load_blacklist(); 152 | 153 | $graylisted_plugins = $blacklist_data['graylist'] ?? []; 154 | $utility_plugins = $blacklist_data['utility'] ?? []; 155 | $active_plugins = get_option( 'active_plugins', [] ); 156 | 157 | // Notify for graylisted plugins 158 | $active_graylisted_plugins = array_filter( $active_plugins, function( $plugin ) use ( $graylisted_plugins ) { 159 | return pbm_is_name_blacklisted( pbm_get_plugin_slug( $plugin ), $graylisted_plugins ); 160 | } ); 161 | 162 | if ( ! empty( $active_graylisted_plugins ) ) { 163 | pbm_add_admin_notice( 164 | 'The following graylisted plugins are active: ' . implode( ', ', array_map( 'pbm_get_plugin_slug', $active_graylisted_plugins ) ) . '. They may be blacklisted in the future.', 165 | 'warning' 166 | ); 167 | } 168 | 169 | // Notify for utility plugins 170 | $active_utility_plugins = array_filter( $active_plugins, function( $plugin ) use ( $utility_plugins ) { 171 | return pbm_is_name_blacklisted( pbm_get_plugin_slug( $plugin ), $utility_plugins ); 172 | } ); 173 | 174 | if ( ! empty( $active_utility_plugins ) ) { 175 | pbm_add_admin_notice( 176 | 'The following utility plugins are currently active: ' . implode( ', ', array_map( 'pbm_get_plugin_slug', $active_utility_plugins ) ) . '. Deactivate them when not in use for security reasons.', 177 | 'info' 178 | ); 179 | } 180 | } 181 | add_action( 'admin_init', 'pbm_display_graylist_and_utility_notices' ); 182 | 183 | // Modify plugin action links for blacklisted plugins 184 | function pbm_modify_plugin_action_links( $actions, $plugin_file, $plugin_data, $context ) { 185 | $blacklist_data = pbm_load_blacklist(); 186 | $blacklisted_plugins = $blacklist_data['blacklist'] ?? []; 187 | 188 | $plugin_slug = pbm_get_plugin_slug( $plugin_file ); 189 | 190 | if ( pbm_is_name_blacklisted( $plugin_slug, $blacklisted_plugins ) ) { 191 | $new_actions = []; 192 | $new_actions['blacklisted'] = 'Blacklisted'; // Show Blacklisted label 193 | foreach ( $actions as $key => $action ) { 194 | if ( strpos( $key, 'delete' ) !== false ) { 195 | $new_actions[ $key ] = $action; // Keep delete action 196 | } 197 | } 198 | return $new_actions; 199 | } 200 | 201 | return $actions; 202 | } 203 | add_filter( 'plugin_action_links', 'pbm_modify_plugin_action_links', 10, 4 ); 204 | add_filter( 'network_admin_plugin_action_links', 'pbm_modify_plugin_action_links', 10, 4 ); 205 | 206 | // Disable "Install Now" button for blacklisted plugins 207 | function pbm_enqueue_admin_scripts( $hook_suffix ) { 208 | if ( 'plugin-install.php' !== $hook_suffix ) { 209 | return; 210 | } 211 | 212 | $blacklist_data = pbm_load_blacklist(); 213 | $blacklisted_plugins = $blacklist_data['blacklist'] ?? []; 214 | 215 | if ( empty( $blacklisted_plugins ) ) { 216 | return; 217 | } 218 | 219 | // Process blacklisted plugins to identify exact matches and prefix matches 220 | $processed_blacklisted_plugins = array_map( function( $item ) { 221 | $item = strtolower( trim( $item ) ); 222 | if ( preg_match( '/^\/.*\/$/', $item ) ) { 223 | // Exact match (item wrapped in slashes) 224 | $term = trim( $item, '/' ); 225 | return array('term' => $term, 'type' => 'exact'); 226 | } else { 227 | // Prefix match 228 | return array('term' => $item, 'type' => 'prefix'); 229 | } 230 | }, $blacklisted_plugins ); 231 | 232 | // Inline script to disable "Install Now" button for blacklisted plugins 233 | wp_add_inline_script( 'jquery-core', ' 234 | jQuery(document).ready(function($) { 235 | var blacklistedPlugins = ' . wp_json_encode( $processed_blacklisted_plugins ) . '; 236 | 237 | function disableInstallButtons() { 238 | $(".install-now").each(function() { 239 | var pluginSlug = $(this).data("slug"); 240 | 241 | if (pluginSlug) { 242 | pluginSlug = pluginSlug.toLowerCase().trim(); 243 | 244 | var isBlacklisted = blacklistedPlugins.some(function(item) { 245 | if (item.type === "exact") { 246 | // Exact match 247 | return item.term === pluginSlug; 248 | } else if (item.type === "prefix") { 249 | // Prefix match 250 | return pluginSlug.startsWith(item.term); 251 | } 252 | return false; 253 | }); 254 | 255 | if (isBlacklisted) { 256 | $(this).prop("disabled", true) 257 | .css({ "opacity": "0.5", "color": "#777", "border-color": "#ccc", "background-color": "#f7f7f7", "cursor": "default" }) 258 | .text("Blacklisted") 259 | .removeAttr("href") 260 | .off("click") 261 | .click(function(e) { e.preventDefault(); e.stopPropagation(); }); 262 | } 263 | } 264 | }); 265 | } 266 | 267 | // Initial run on page load 268 | disableInstallButtons(); 269 | 270 | // Listen for AJAX completion and re-run the script 271 | $(document).ajaxComplete(function() { 272 | disableInstallButtons(); 273 | }); 274 | }); 275 | '); 276 | } 277 | add_action( 'admin_enqueue_scripts', 'pbm_enqueue_admin_scripts', 5 ); 278 | 279 | // Helper function to check if a plugin is blacklisted 280 | function pbm_is_name_blacklisted( string $plugin_slug, array $list ): bool { 281 | $plugin_slug = strtolower( trim( $plugin_slug ) ); 282 | 283 | foreach ( $list as $item ) { 284 | $item = strtolower( trim( $item ) ); 285 | 286 | // Check for exact match (wrapped in slashes) 287 | if ( preg_match( '/^\/.*\/$/', $item ) && trim( $item, '/' ) === $plugin_slug ) { 288 | return true; 289 | } 290 | // Check for wildcard match (prefix) 291 | elseif ( strpos( $plugin_slug, $item ) === 0 ) { 292 | return true; 293 | } 294 | } 295 | return false; 296 | } 297 | 298 | // Helper function to extract plugin slug from file path 299 | function pbm_get_plugin_slug( string $plugin_file ): string { 300 | return dirname( $plugin_file ); 301 | } 302 | 303 | // Ref: ChatGPT 304 | -------------------------------------------------------------------------------- /readme.md: -------------------------------------------------------------------------------- 1 | # Plugin Blacklist 2 | 3 | Disallows bad WordPress plugins 4 | 5 | ## Changelog 6 | 7 | ### 2.1.5 8 | - added `Requires PHP` plugin header 9 | 10 | ### 2.1.4 11 | - improved disabling "Install Now" button on exact match slugs like `/jetpack/` 12 | 13 | ### 2.1.3 14 | - tweaked disable wordpress.org snippet 15 | - replaced `esc_html()` with `wp_kses_post()` wherever messages are being output in admin notices 16 | 17 | ### 2.1.2 18 | - added `ajaxComplete` handler to ensure "Install Now" button is properly disabled even after AJAX events 19 | - minor code cleanup and security and performance enhancements 20 | 21 | ### 2.1.1 22 | - changed `pbm_enqueue_admin_scripts` action to priority `25` to avoid conflicts with Repo Man 23 | 24 | ### 2.1.0 25 | - minor refactoring to fix support for exact-match `/plugin-slug/` using slashes (without slashes is prefix match only) 26 | - tweaks to formatting, comments, etc. 27 | 28 | ### 2.0.2 29 | - add `gu_override_dot_org` (fixed) snippet 30 | 31 | ### 2.0.1 32 | - new global variable `$pbm_blacklist_data` 33 | - improved `pbm_add_admin_notice()` to prevent duplicates 34 | 35 | ### 2.0.0 36 | - completely refactored plugin to standard WordPress coding using ChatGPT 37 | - no more cron jobs or database usage 38 | - main blacklist now called `blacklist` 39 | - `future` blacklist now called `graylist` 40 | - `pause` blacklist now called `utility` 41 | - renamed other sublists to: `blacklist classes`, `blacklist functions`, `graylist classes`, `graylist functions`, `utility classes`, `utility functions` 42 | - blacklisted plugins force deactivated on each WP Admin page load via `init` if activated (no longer uses cron jobs for this check) 43 | - new feature to gray out blacklisted plugins in the plugin search 44 | - new featured to disable blacklisted plugins action links and replace with the word "Blacklisted" 45 | - trying to circumvent using drop-down menu Activate or direct URL are sent to `wp_die` 46 | - enhanced code for PHP 8.3 47 | - compatible with PHP 7.0, 7.2, 7.4, 8.1 48 | - support for Git Updater (although this is meant to be a MU plugin only) 49 | 50 | ### 1.1.1 51 | - admin notices code play (incomplete) 52 | - abandoned version 53 | 54 | ### 1.1.0 55 | - "pause blacklist" feature added (admin notice for utility plugins that should be deactivated when not in use) 56 | - it uses the same technique of the previous sections, checking all plugins on activation/deactivation processes, and also every hour via WP cron. The future and pause plugins info is saved in autoloaded options to avoid extra database queries. 57 | - for clarity I have changed the admin notice color codes, now it shows red border left (error code) for deactivated plugins (yellow before), yellow left border (warning) for future plugins (blue before), and blue (info) for pause plugins. 58 | - added a new section `Pause Blacklist` in the plugin blacklist.txt template ini file. 59 | 60 | ### 1.0.1 61 | - minor performance improvements during the "by code" plugin detection, avoiding the WP active_plugins options update when no banned plugins detected by functions or classes 62 | 63 | ### 1.0.0 64 | - initial release 65 | - tested with PHP 7.0 66 | - tested with PHP 7.1 67 | - tested with PHP 7.2 68 | - plugin uses PHP namespaces 69 | - object-oriented codebase 70 | - WP Cron fires 1x hour (de-activates blacklisted plugins) 71 | --------------------------------------------------------------------------------