wpallstars/wp-fix-plugin-does-not-exist-notices
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Refactor: Enqueue assets, add docblocks, bump version to 1.5.0

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This commit is contained in:
Marcus Quinn
2025-04-11 22:48:47 +01:00
parent b883a222c0
commit 613c4f43b6
3 changed files with 439 additions and 302 deletions
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28
assets/css/admin-styles.css Normal file
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@ -0,0 +1,28 @@
.prc-notice {
border-left: 4px solid #ffba00;
background-color: #fff8e5;
padding: 10px 12px;
margin: 5px 0 15px;
font-size: 14px;
position: relative;
}
.prc-notice h3 {
margin-top: 0;
color: #826200;
}
.prc-notice::before {
content: "";
position: absolute;
top: -10px;
left: 20px;
width: 0;
height: 0;
border-left: 10px solid transparent;
border-right: 10px solid transparent;
border-bottom: 10px solid #fff8e5;
}
/* Style for highlighting the missing plugin row */
tr.inactive.prc-highlight-missing {
background-color: #fff8e5 !important; /* Use !important to override default styles */
}

81
assets/js/admin-scripts.js Normal file
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@ -0,0 +1,81 @@
(function() {
// Function to inject our notice
function injectNotice() {
// Find all notification containers first
var noticeContainers = document.querySelectorAll('.notice, .error, .updated');
// Find all error notifications about missing plugins
noticeContainers.forEach(function(notice) {
if (notice.textContent.includes('Plugin file does not exist') ||
notice.textContent.includes('has been deactivated due to an error')) {
// Check if we already added our notice
if (notice.nextElementSibling && notice.nextElementSibling.classList.contains('prc-notice')) {
return;
}
// Create our custom notice
var ourNotice = document.createElement('div');
ourNotice.className = 'prc-notice';
// Add content (using localized strings passed via wp_localize_script if needed, but simple for now)
ourNotice.innerHTML = '<h3 style="margin-top:0;color:#826200;">👉 Fix Plugin Does Not Exist Notices Can Fix This</h3>' +
'<p>To remove the above error notification, scroll down to find the plugin marked with "<strong style="color:red">(File Missing)</strong>" and click its "<strong>Remove Reference</strong>" link.</p>' +
'<p>This will permanently remove the missing plugin reference from your database.</p>' +
'<p><a href="#" id="prc-scroll-to-plugin" style="font-weight:bold;text-decoration:underline;color:#826200;">Click here to scroll to the missing plugin</a></p>';
// Insert our notice right after the error
notice.parentNode.insertBefore(ourNotice, notice.nextSibling);
// Add scroll behavior
var scrollLink = document.getElementById('prc-scroll-to-plugin');
if (scrollLink) {
scrollLink.addEventListener('click', function(e) {
e.preventDefault();
var missingPlugins = document.querySelectorAll('tr.inactive:not(.plugin-update-tr)');
for (var i = 0; i < missingPlugins.length; i++) {
if (missingPlugins[i].textContent.includes('(File Missing)')) {
// Add a class for highlighting instead of direct style manipulation
missingPlugins[i].classList.add('prc-highlight-missing');
missingPlugins[i].scrollIntoView({ behavior: 'smooth', block: 'center' });
// Optional: Remove highlight after a delay
setTimeout(function() {
missingPlugins[i].classList.remove('prc-highlight-missing');
}, 3000); // Remove highlight after 3 seconds
return;
}
}
});
}
}
});
}
// Try to inject notices on multiple events to ensure it works
document.addEventListener('DOMContentLoaded', function() {
injectNotice();
// Also set up a MutationObserver to watch for dynamically added notices
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
if (mutation.addedNodes && mutation.addedNodes.length > 0) {
// Check if added nodes are notices or contain notices
mutation.addedNodes.forEach(function(node) {
if (node.nodeType === 1 && (node.matches('.notice, .error, .updated') || node.querySelector('.notice, .error, .updated'))) {
injectNotice();
}
});
}
});
});
// Start observing the body for changes in children
observer.observe(document.body, { childList: true, subtree: true });
});
// Backup attempt with window.onload (less reliable than DOMContentLoaded but good fallback)
window.addEventListener('load', function() {
setTimeout(injectNotice, 500); // Delay slightly to ensure dynamic content is loaded
});
})();

444
fix-plugin-does-not-exist-notices.php
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@ -10,7 +10,7 @@
* @wordpress-plugin * @wordpress-plugin
* Plugin Name: Fix 'Plugin file does not exist.' Notices * Plugin Name: Fix 'Plugin file does not exist.' Notices
* Description: Adds missing plugins to the plugins list with a "Remove Reference" link so you can permanently clean up invalid plugin entries and remove error notices. * Description: Adds missing plugins to the plugins list with a "Remove Reference" link so you can permanently clean up invalid plugin entries and remove error notices.
* Version: 1.4.2 * Version: 1.5.0
* Author: Marcus Quinn * Author: Marcus Quinn
* Author URI: https://www.wpallstars.com * Author URI: https://www.wpallstars.com
* License: GPL-2.0+ * License: GPL-2.0+
@ -34,51 +34,113 @@
* along with this plugin. If not, see https://www.gnu.org/licenses/gpl-2.0.html. * along with this plugin. If not, see https://www.gnu.org/licenses/gpl-2.0.html.
*/ */
// Exit if accessed directly // Exit if accessed directly.
if (!defined('ABSPATH')) { if ( ! defined( 'ABSPATH' ) ) {
exit; exit;
} }
/**
* Main class for the plugin.
*/
class Fix_Plugin_Does_Not_Exist_Notices { class Fix_Plugin_Does_Not_Exist_Notices {
/**
* Constructor. Hooks into WordPress actions and filters.
*/
public function __construct() { public function __construct() {
// Add our plugin to the plugins list // Add our plugin to the plugins list.
add_filter('all_plugins', array($this, 'add_missing_plugins_references')); add_filter( 'all_plugins', array( $this, 'add_missing_plugins_references' ) );
// Add our action link to the plugins list // Add our action link to the plugins list.
add_filter('plugin_action_links', array($this, 'add_remove_reference_action'), 20, 4); add_filter( 'plugin_action_links', array( $this, 'add_remove_reference_action' ), 20, 4 );
// Handle the remove reference action // Handle the remove reference action.
add_action('admin_init', array($this, 'handle_remove_reference')); add_action( 'admin_init', array( $this, 'handle_remove_reference' ) );
// Add admin notices for operation feedback // Add admin notices for operation feedback.
add_action('admin_notices', array($this, 'admin_notices')); add_action( 'admin_notices', array( $this, 'admin_notices' ) );
// Enqueue admin scripts and styles.
add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_admin_assets' ) );
} }
/** /**
* Find and add invalid plugin references to the plugins list * Enqueue scripts and styles needed for the admin area.
*
* @param string $hook_suffix The current admin page hook.
* @return void
*/ */
public function add_missing_plugins_references($plugins) { public function enqueue_admin_assets( $hook_suffix ) {
// Only run on the plugins page // Only load on the plugins page.
if (!$this->is_plugins_page()) { if ( 'plugins.php' !== $hook_suffix ) {
return;
}
// Get invalid plugins to decide if assets are needed.
$invalid_plugins = $this->get_invalid_plugins();
if ( empty( $invalid_plugins ) ) {
return; // No missing plugins, no need for the special notice JS/CSS.
}
$plugin_url = plugin_dir_url( __FILE__ );
wp_enqueue_style(
'fpden-admin-styles',
$plugin_url . 'assets/css/admin-styles.css',
array(),
filemtime( plugin_dir_path( __FILE__ ) . 'assets/css/admin-styles.css' ) // Versioning based on file modification time.
);
wp_enqueue_script(
'fpden-admin-scripts',
$plugin_url . 'assets/js/admin-scripts.js',
array( 'jquery' ), // Add dependencies if needed, e.g., jQuery.
filemtime( plugin_dir_path( __FILE__ ) . 'assets/js/admin-scripts.js' ), // Versioning.
true // Load in footer.
);
// Optional: Pass localized data to script if needed.
// wp_localize_script('fpden-admin-scripts', 'fpdenData', array(
// 'ajax_url' => admin_url('admin-ajax.php'),
// 'nonce' => wp_create_nonce('fpden_ajax_nonce'),
// ));
}
/**
* Find and add invalid plugin references to the plugins list.
*
* Filters the list of plugins displayed on the plugins page to include
* entries for active plugins whose files are missing.
*
* @param array $plugins An array of plugin data.
* @return array The potentially modified array of plugin data.
*/
public function add_missing_plugins_references( $plugins ) {
// Only run on the plugins page.
if ( ! $this->is_plugins_page() ) {
return $plugins; return $plugins;
} }
// Get active plugins that don't exist // Get active plugins that don't exist.
$invalid_plugins = $this->get_invalid_plugins(); $invalid_plugins = $this->get_invalid_plugins();
// Add each invalid plugin to the plugin list // Add each invalid plugin to the plugin list.
foreach ($invalid_plugins as $plugin_path) { foreach ( $invalid_plugins as $plugin_path ) {
if (!isset($plugins[$plugin_path])) { if ( ! isset( $plugins[ $plugin_path ] ) ) {
$plugin_name = basename($plugin_path); $plugin_name = basename( $plugin_path );
$plugins[$plugin_path] = array( $plugins[ $plugin_path ] = array(
'Name' => $plugin_name . ' <span class="error">(File Missing)</span>', 'Name' => $plugin_name . ' <span class="error">(File Missing)</span>',
'Description' => 'This plugin is still marked as "Active" in your database — but its folder and files can\'t be found in /wp-content/plugins/. Click "Remove Reference" to permanently remove it from your active plugins list and eliminate the error notice.', /* translators: %s: Path to wp-content/plugins */
'Version' => 'N/A', 'Description' => sprintf(
__( 'This plugin is still marked as "Active" in your database — but its folder and files can\'t be found in %s. Click "Remove Reference" to permanently remove it from your active plugins list and eliminate the error notice.', 'fix-plugin-does-not-exist-notices' ),
'<code>/wp-content/plugins/</code>'
),
'Version' => __( 'N/A', 'fix-plugin-does-not-exist-notices' ),
'Author' => '', 'Author' => '',
'PluginURI' => '', 'PluginURI' => '',
'AuthorURI' => '', 'AuthorURI' => '',
'Title' => $plugin_name . ' (Missing)', 'Title' => $plugin_name . ' (' . __( 'Missing', 'fix-plugin-does-not-exist-notices' ) . ')',
'AuthorName' => '' 'AuthorName' => '',
); );
} }
} }
@ -87,80 +149,112 @@ class Fix_Plugin_Does_Not_Exist_Notices {
} }
/** /**
* Add the Remove Reference action link to invalid plugins * Add the Remove Reference action link to invalid plugins.
*
* Filters the action links displayed for each plugin on the plugins page.
* Adds a "Remove Reference" link for plugins identified as missing.
*
* @param array $actions An array of plugin action links.
* @param string $plugin_file Path to the plugin file relative to the plugins directory.
* @param array $plugin_data An array of plugin data.
* @param string $context The plugin context (e.g., 'all', 'active', 'inactive').
* @return array The potentially modified array of plugin action links.
*/ */
public function add_remove_reference_action($actions, $plugin_file, $plugin_data, $context) { public function add_remove_reference_action( $actions, $plugin_file, $plugin_data, $context ) {
// Only run on the plugins page // Only run on the plugins page.
if (!$this->is_plugins_page()) { if ( ! $this->is_plugins_page() ) {
return $actions; return $actions;
} }
// Check if this is a missing plugin // Check if this is a missing plugin identified by our previous filter.
if (isset($plugin_data['Name']) && strpos($plugin_data['Name'], '<span class="error">(File Missing)</span>') !== false) { if ( isset( $plugin_data['Name'] ) && strpos( $plugin_data['Name'], '<span class="error">(File Missing)</span>' ) !== false ) {
// Clear existing actions // Clear existing actions like "Activate", "Deactivate", "Edit".
$actions = array(); $actions = array();
// Add our action // Add our custom action.
$nonce = wp_create_nonce('remove_plugin_reference_' . $plugin_file); $nonce = wp_create_nonce( 'remove_plugin_reference_' . $plugin_file );
$remove_url = admin_url('plugins.php?action=remove_reference&plugin=' . urlencode($plugin_file) . '&_wpnonce=' . $nonce); $remove_url = admin_url( 'plugins.php?action=remove_reference&plugin=' . urlencode( $plugin_file ) . '&_wpnonce=' . $nonce );
$actions['remove_reference'] = '<a href="' . esc_url($remove_url) . '" class="delete" aria-label="' . esc_attr__('Remove Reference', 'fix-plugin-does-not-exist-notices') . '">Remove Reference</a>'; /* translators: %s: Plugin file path */
$aria_label = sprintf( __( 'Remove reference to missing plugin %s', 'fix-plugin-does-not-exist-notices' ), esc_attr( $plugin_file ) );
$actions['remove_reference'] = '<a href="' . esc_url( $remove_url ) . '" class="delete" aria-label="' . $aria_label . '">' . esc_html__( 'Remove Reference', 'fix-plugin-does-not-exist-notices' ) . '</a>';
} }
return $actions; return $actions;
} }
/** /**
* Handle the remove reference action * Handle the remove reference action triggered by the link.
*
* Checks for the correct action, verifies nonce and permissions,
* calls the removal function, and redirects back to the plugins page.
*
* @return void
*/ */
public function handle_remove_reference() { public function handle_remove_reference() {
// Check if we're removing a reference // Check if our specific action is being performed.
if (!isset($_GET['action']) || $_GET['action'] !== 'remove_reference' || !isset($_GET['plugin'])) { if ( ! isset( $_GET['action'] ) || 'remove_reference' !== $_GET['action'] || ! isset( $_GET['plugin'] ) ) {
return; return;
} }
// Verify permissions // Verify user permissions.
if (!current_user_can('activate_plugins')) { if ( ! current_user_can( 'activate_plugins' ) ) {
wp_die(__('You do not have sufficient permissions to perform this action.', 'fix-plugin-does-not-exist-notices')); wp_die( esc_html__( 'You do not have sufficient permissions to perform this action.', 'fix-plugin-does-not-exist-notices' ) );
} }
// Get the plugin file // Sanitize and get the plugin file path.
$plugin_file = isset($_GET['plugin']) ? $_GET['plugin'] : ''; $plugin_file = isset( $_GET['plugin'] ) ? sanitize_text_field( wp_unslash( $_GET['plugin'] ) ) : '';
if ( empty( $plugin_file ) ) {
wp_die( esc_html__( 'Invalid plugin specified.', 'fix-plugin-does-not-exist-notices' ) );
}
// Verify nonce // Verify nonce for security.
check_admin_referer('remove_plugin_reference_' . $plugin_file); check_admin_referer( 'remove_plugin_reference_' . $plugin_file );
// Remove the plugin reference // Attempt to remove the plugin reference.
$success = $this->remove_plugin_reference($plugin_file); $success = $this->remove_plugin_reference( $plugin_file );
// Redirect back to plugins page with a message // Prepare redirect URL with feedback query args.
$redirect = admin_url('plugins.php'); $redirect_url = admin_url( 'plugins.php' );
$redirect = add_query_arg($success ? 'reference_removed' : 'reference_removal_failed', '1', $redirect); $redirect_url = add_query_arg( $success ? 'reference_removed' : 'reference_removal_failed', '1', $redirect_url );
wp_redirect($redirect);
// Redirect and exit.
wp_safe_redirect( $redirect_url );
exit; exit;
} }
/** /**
* Remove a plugin reference from the active plugins * Remove a plugin reference from the active plugins list in the database.
*
* Handles both single site and multisite network activated plugins.
*
* @param string $plugin_file The plugin file path to remove.
* @return bool True on success, false on failure or if the plugin wasn't found.
*/ */
public function remove_plugin_reference($plugin_file) { public function remove_plugin_reference( $plugin_file ) {
$success = false; $success = false;
// Handle multisite network admin // Ensure plugin file path is provided.
if (is_multisite() && is_network_admin()) { if ( empty( $plugin_file ) ) {
$active_plugins = get_site_option('active_sitewide_plugins', array()); return false;
if (isset($active_plugins[$plugin_file])) {
unset($active_plugins[$plugin_file]);
$success = update_site_option('active_sitewide_plugins', $active_plugins);
} }
// Handle multisite network admin context.
if ( is_multisite() && is_network_admin() ) {
$active_plugins = get_site_option( 'active_sitewide_plugins', array() );
// Network active plugins are stored as key => timestamp.
if ( isset( $active_plugins[ $plugin_file ] ) ) {
unset( $active_plugins[ $plugin_file ] );
$success = update_site_option( 'active_sitewide_plugins', $active_plugins );
} }
// Handle single site or multisite subsite } else { // Handle single site or non-network admin context.
else { $active_plugins = get_option( 'active_plugins', array() );
$active_plugins = get_option('active_plugins', array()); // Single site active plugins are stored as an indexed array.
$key = array_search($plugin_file, $active_plugins); $key = array_search( $plugin_file, $active_plugins, true ); // Use strict comparison.
if ($key !== false) { if ( false !== $key ) {
unset($active_plugins[$key]); unset( $active_plugins[ $key ] );
$active_plugins = array_values($active_plugins); // Re-index array // Re-index the array numerically.
$success = update_option('active_plugins', $active_plugins); $active_plugins = array_values( $active_plugins );
$success = update_option( 'active_plugins', $active_plugins );
} }
} }
@ -168,176 +262,110 @@ class Fix_Plugin_Does_Not_Exist_Notices {
} }
/** /**
* Display admin notices * Display admin notices on the plugins page.
*
* Shows informational notices about missing plugins and feedback
* messages after attempting to remove a reference.
*
* @return void
*/ */
public function admin_notices() { public function admin_notices() {
// Only run on the plugins page // Only run on the plugins page.
if (!$this->is_plugins_page()) { if ( ! $this->is_plugins_page() ) {
return; return;
} }
// Get invalid plugins // Check for feedback messages from the remove action.
if ( isset( $_GET['reference_removed'] ) && '1' === $_GET['reference_removed'] ) {
?>
<div class="notice notice-success is-dismissible">
<p><?php esc_html_e( 'Plugin reference removed successfully.', 'fix-plugin-does-not-exist-notices' ); ?></p>
</div>
<?php
}
if ( isset( $_GET['reference_removal_failed'] ) && '1' === $_GET['reference_removal_failed'] ) {
?>
<div class="notice notice-error is-dismissible">
<p><?php esc_html_e( 'Failed to remove plugin reference. The plugin may already have been removed, or there was a database issue.', 'fix-plugin-does-not-exist-notices' ); ?></p>
</div>
<?php
}
// Get invalid plugins to display the main informational notice.
// Note: We don't need to call get_invalid_plugins() again if enqueue_admin_assets already did,
// but calling it here ensures the notice shows even if assets weren't enqueued (e.g., JS disabled).
// Consider caching the result in a class property if performance is critical.
$invalid_plugins = $this->get_invalid_plugins(); $invalid_plugins = $this->get_invalid_plugins();
// Create a highlighted notice immediately after WordPress error messages // Display the main informational notice if there are missing plugins.
if (!empty($invalid_plugins)) { if ( ! empty( $invalid_plugins ) ) {
// Add a notice specifically targeting the WordPress error notification
// Use admin_head to ensure it runs early in the page load process
add_action('admin_head', function() use ($invalid_plugins) {
?> ?>
<style type="text/css"> <div class="notice notice-info is-dismissible">
.prc-notice { <h3><?php esc_html_e( 'Fix Plugin Does Not Exist Notices', 'fix-plugin-does-not-exist-notices' ); ?></h3>
border-left: 4px solid #ffba00; <p>
background-color: #fff8e5; <strong><?php esc_html_e( 'Missing plugin files detected:', 'fix-plugin-does-not-exist-notices' ); ?></strong>
padding: 10px 12px; <?php esc_html_e( 'The plugins listed below with a', 'fix-plugin-does-not-exist-notices' ); ?>
margin: 5px 0 15px; <span style="color:red;">(<?php esc_html_e( 'File Missing', 'fix-plugin-does-not-exist-notices' ); ?>)</span>
font-size: 14px; <?php esc_html_e( 'tag no longer exist but are still referenced in your database.', 'fix-plugin-does-not-exist-notices' ); ?>
position: relative; </p>
} <p>
.prc-notice h3 { <strong><?php esc_html_e( 'How to fix:', 'fix-plugin-does-not-exist-notices' ); ?></strong>
margin-top: 0; <?php esc_html_e( 'Click the "Remove Reference" link next to each missing plugin to safely remove it from your active plugins list.', 'fix-plugin-does-not-exist-notices' ); ?>
color: #826200; </p>
} <p><?php esc_html_e( 'This will clean up your database and remove the error notifications.', 'fix-plugin-does-not-exist-notices' ); ?></p>
.prc-notice::before { </div>
content: "";
position: absolute;
top: -10px;
left: 20px;
width: 0;
height: 0;
border-left: 10px solid transparent;
border-right: 10px solid transparent;
border-bottom: 10px solid #fff8e5;
}
</style>
<script type="text/javascript">
// Function to inject our notice
function injectNotice() {
// Find all notification containers first
var noticeContainers = document.querySelectorAll('.notice, .error, .updated');
// Find all error notifications about missing plugins
noticeContainers.forEach(function(notice) {
if (notice.textContent.includes('Plugin file does not exist') ||
notice.textContent.includes('has been deactivated due to an error')) {
// Check if we already added our notice
if (notice.nextElementSibling && notice.nextElementSibling.classList.contains('prc-notice')) {
return;
}
// Create our custom notice
var ourNotice = document.createElement('div');
ourNotice.className = 'prc-notice';
// Add content
ourNotice.innerHTML = '<h3 style="margin-top:0;color:#826200;">👉 Fix Plugin Does Not Exist Notices Can Fix This</h3>' +
'<p>To remove the above error notification, scroll down to find the plugin marked with "<strong style="color:red">(File Missing)</strong>" and click its "<strong>Remove Reference</strong>" link.</p>' +
'<p>This will permanently remove the missing plugin reference from your database.</p>' +
'<p><a href="#" id="prc-scroll-to-plugin" style="font-weight:bold;text-decoration:underline;color:#826200;">Click here to scroll to the missing plugin</a></p>';
// Insert our notice right after the error
notice.parentNode.insertBefore(ourNotice, notice.nextSibling);
// Add scroll behavior
var scrollLink = document.getElementById('prc-scroll-to-plugin');
if (scrollLink) {
scrollLink.addEventListener('click', function(e) {
e.preventDefault();
var missingPlugins = document.querySelectorAll('tr.inactive:not(.plugin-update-tr)');
for (var i = 0; i < missingPlugins.length; i++) {
if (missingPlugins[i].textContent.includes('(File Missing)')) {
missingPlugins[i].style.backgroundColor = '#fff8e5';
missingPlugins[i].scrollIntoView({behavior: 'smooth', block: 'center'});
return;
}
}
});
}
}
});
}
// Try to inject notices on multiple events to ensure it works
document.addEventListener('DOMContentLoaded', function() {
injectNotice();
// Also set up a MutationObserver to watch for dynamically added notices
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
if (mutation.addedNodes && mutation.addedNodes.length > 0) {
injectNotice();
}
});
});
// Start observing the body for changes
observer.observe(document.body, { childList: true, subtree: true });
});
// Backup attempt with window.onload
window.onload = function() {
setTimeout(injectNotice, 500);
};
// Final backup in case other methods fail
setTimeout(injectNotice, 1000);
</script>
<?php <?php
}); // The JavaScript enqueued by enqueue_admin_assets() will handle adding the contextual notice
// near the actual WordPress error message.
// Also display our standard info notice with more details
echo '<div class="notice notice-info is-dismissible">';
echo '<h3>Fix Plugin Does Not Exist Notices</h3>';
echo '<p><strong>Missing plugin files detected:</strong> The plugins listed below with <span style="color:red;">(File Missing)</span> tag no longer exist but are still referenced in your database.</p>';
echo '<p><strong>How to fix:</strong> Click the "Remove Reference" link next to each missing plugin to safely remove it from your active plugins list.</p>';
echo '<p>This will clean up your database and remove the error notifications.</p>';
echo '</div>';
}
// Show success message
if (isset($_GET['reference_removed']) && $_GET['reference_removed'] === '1') {
echo '<div class="notice notice-success is-dismissible"><p>Plugin reference removed successfully.</p></div>';
}
// Show error message
if (isset($_GET['reference_removal_failed']) && $_GET['reference_removal_failed'] === '1') {
echo '<div class="notice notice-error is-dismissible"><p>Failed to remove plugin reference. The plugin may already have been removed.</p></div>';
} }
} }
/** /**
* Check if we're on the plugins page * Check if the current admin page is the plugins page.
*
* @global string $pagenow WordPress global variable for the current admin page filename.
* @return bool True if the current page is plugins.php, false otherwise.
*/ */
private function is_plugins_page() { private function is_plugins_page() {
global $pagenow; global $pagenow;
return is_admin() && $pagenow === 'plugins.php'; // Check if it's an admin page and the filename is plugins.php.
return is_admin() && isset( $pagenow ) && 'plugins.php' === $pagenow;
} }
/** /**
* Get a list of invalid plugin references * Get a list of active plugin file paths that do not exist on the filesystem.
*
* Checks both single site and network active plugins based on the context.
*
* @return array An array of plugin file paths (relative to WP_PLUGIN_DIR) that are missing.
*/ */
private function get_invalid_plugins() { private function get_invalid_plugins() {
$invalid_plugins = array(); $invalid_plugins = array();
$active_plugins = array();
// Get all active plugins // Determine which option to check based on context (Network Admin or single site).
if (is_multisite() && is_network_admin()) { if ( is_multisite() && is_network_admin() ) {
$active_plugins = array_keys(get_site_option('active_sitewide_plugins', array())); // Network active plugins are stored as keys in an associative array.
$active_plugins = array_keys( get_site_option( 'active_sitewide_plugins', array() ) );
} else { } else {
$active_plugins = get_option('active_plugins', array()); // Single site active plugins are stored in a numerically indexed array.
$active_plugins = get_option( 'active_plugins', array() );
} }
// Check if each plugin exists // Check if the file exists for each active plugin.
foreach ($active_plugins as $plugin) { foreach ( $active_plugins as $plugin_file ) {
$plugin_path = WP_PLUGIN_DIR . '/' . $plugin; // Construct the full path to the main plugin file.
if (!file_exists($plugin_path)) { $plugin_path = WP_PLUGIN_DIR . '/' . $plugin_file;
$invalid_plugins[] = $plugin; // Use validate_file to prevent directory traversal issues, although less likely here.
if ( validate_file( $plugin_file ) === 0 && ! file_exists( $plugin_path ) ) {
$invalid_plugins[] = $plugin_file;
} }
} }
return $invalid_plugins; return $invalid_plugins;
} }
} } // End class Fix_Plugin_Does_Not_Exist_Notices
// Initialize the plugin // Initialize the plugin class.
new Fix_Plugin_Does_Not_Exist_Notices(); new Fix_Plugin_Does_Not_Exist_Notices();