JezK

Edit File: uninstall.php

<?php

defined('WP_UNINSTALL_PLUGIN') || exit;

function glsr_uninstall()
{
    $settings = get_option('site_reviews');
    $uninstall = isset($settings['settings']['general']['delete_data_on_uninstall'])
        ? $settings['settings']['general']['delete_data_on_uninstall']
        : '';
    if ('all' === $uninstall) {
        glsr_uninstall_all();
    }
    if ('minimal' === $uninstall) {
        glsr_uninstall_minimal();
        glsr_uninstall_minimal_drop_foreign_keys();
    }
    delete_option('glsr_activated');
    delete_transient('glsr_cloudflare_ips');
    delete_transient('glsr_remote_post_test');
    delete_transient('glsr_system_info');
    // finally, flush the cache
    if (function_exists('wp_cache_supports') && wp_cache_supports('flush_group')) {
        wp_cache_flush_group('options');
        wp_cache_flush_group('reviews');
    } else {
        wp_cache_flush();
    }
}

function glsr_uninstall_all()
{
    glsr_uninstall_minimal();
    glsr_uninstall_all_delete_reviews();
    glsr_uninstall_all_delete_tables();
    glsr_uninstall_all_delete_uploads();
    glsr_uninstall_all_cleanup();
}

function glsr_uninstall_all_cleanup()
{
    global $wpdb;
    // delete any remaining options
    $wpdb->query("DELETE FROM {$wpdb->options} WHERE option_name LIKE '%glsr_%'");
    $wpdb->query("DELETE FROM {$wpdb->options} WHERE option_name LIKE 'site-review-category%'");
    if (defined('DB_ENGINE') && 'sqlite' === DB_ENGINE) {
        return;
    }
    // optimise affected database tables
    $wpdb->query("OPTIMIZE TABLE {$wpdb->options}");
    $wpdb->query("OPTIMIZE TABLE {$wpdb->postmeta}");
    $wpdb->query("OPTIMIZE TABLE {$wpdb->posts}");
    $wpdb->query("OPTIMIZE TABLE {$wpdb->term_taxonomy}");
    $wpdb->query("OPTIMIZE TABLE {$wpdb->termmeta}");
    $wpdb->query("OPTIMIZE TABLE {$wpdb->terms}");
    $wpdb->query("OPTIMIZE TABLE {$wpdb->usermeta}");
}

function glsr_uninstall_all_delete_reviews()
{
    global $wpdb;
    // delete attached media (e.g. review images) before their parent posts go
    $attachmentIds = $wpdb->get_col("
        SELECT ID FROM {$wpdb->posts}
        WHERE post_type = 'attachment'
        AND post_parent IN (SELECT ID FROM {$wpdb->posts} WHERE post_type = 'site-review')
    ");
    foreach ($attachmentIds as $attachmentId) {
        wp_delete_attachment((int) $attachmentId, true);
    }
    // delete all reviews and revisions
    $wpdb->query("
        DELETE p, pr, tr, pm
        FROM {$wpdb->posts} p
        LEFT JOIN {$wpdb->posts} pr ON (pr.post_parent = p.ID AND pr.post_type = 'revision')
        LEFT JOIN {$wpdb->term_relationships} tr ON (tr.object_id = p.ID)
        LEFT JOIN {$wpdb->postmeta} pm ON (pm.post_id = p.ID)
        WHERE p.post_type = 'site-review'
    ");
    // delete all review categories
    $wpdb->query("
        DELETE tt, t, tm
        FROM {$wpdb->term_taxonomy} tt
        LEFT JOIN {$wpdb->terms} t ON (t.term_id = tt.term_id)
        LEFT JOIN {$wpdb->termmeta} tm ON (tm.term_id = tt.term_id)
        WHERE tt.taxonomy = 'site-review-category'
    ");
    // delete all assigned_posts meta
    $wpdb->query("DELETE FROM {$wpdb->postmeta} WHERE meta_key LIKE '%glsr_%'");
    // delete all Site Reviews user meta
    $wpdb->query("
        DELETE FROM {$wpdb->usermeta}
        WHERE (meta_key LIKE '%glsr_%' OR meta_key LIKE '%_site-review%' OR meta_key LIKE '%-site-review%')
    ");
}

function glsr_uninstall_all_delete_tables()
{
    global $wpdb;
    // order is intentional
    $wpdb->query("DROP TABLE IF EXISTS {$wpdb->prefix}glsr_assigned_users");
    $wpdb->query("DROP TABLE IF EXISTS {$wpdb->prefix}glsr_assigned_terms");
    $wpdb->query("DROP TABLE IF EXISTS {$wpdb->prefix}glsr_assigned_posts");
    $wpdb->query("DROP TABLE IF EXISTS {$wpdb->prefix}glsr_ratings");
}

function glsr_uninstall_all_delete_uploads()
{
    require_once ABSPATH.'wp-admin/includes/file.php';
    global $wp_filesystem;
    if (!WP_Filesystem()) {
        return;
    }
    // delete the Site Reviews uploads directory (logs, review images)
    $uploads = wp_upload_dir(null, true, true); // do not use the cached path
    $basedir = realpath($uploads['basedir']);
    $dirname = trailingslashit($uploads['basedir']).'site-reviews';
    $realDirname = realpath($dirname);
    if (false === $basedir || false === $realDirname) {
        return;
    }
    // containment: refuse to delete anything at or outside of the uploads
    // directory itself — only a path strictly inside it may go
    if (0 !== strpos($realDirname, $basedir.DIRECTORY_SEPARATOR)) {
        return;
    }
    if (!glsr_uninstall_is_dir_safe_to_delete($dirname)) {
        return;
    }
    $wp_filesystem->rmdir(wp_normalize_path($dirname), true);
}

/**
 * Refuses a directory that is, or contains, a symlink: deleting through one
 * could reach files outside of the uploads directory.
 */
function glsr_uninstall_is_dir_safe_to_delete(string $dir): bool
{
    if (is_link($dir)) {
        return false;
    }
    $entries = @scandir($dir);
    if (false === $entries) {
        return false;
    }
    foreach ($entries as $entry) {
        if ('.' === $entry || '..' === $entry) {
            continue;
        }
        $path = $dir.'/'.$entry;
        if (is_link($path)) {
            return false;
        }
        if (is_dir($path) && !glsr_uninstall_is_dir_safe_to_delete($path)) {
            return false;
        }
    }
    return true;
}

function glsr_uninstall_minimal()
{
    global $wpdb;
    $options = [
        'geminilabs_site_reviews-v2', // v2 settings
        'geminilabs_site_reviews_settings', // v1 settings
        'site_reviews_v3', // v3 settings
        'site_reviews_v4', // v4 settings
        'site_reviews_v5', // v5 settings
        'site_reviews_v6', // v6 settings
        'site_reviews_v7', // v7 settings
        'site_reviews', // v7+ settings
        'theme_mods_site-reviews',
        'widget_glsr_site-reviews',
        'widget_glsr_site-reviews-form',
        'widget_glsr_site-reviews-summary',
    ];
    foreach ($options as $option) {
        delete_option($option);
    }
    delete_transient('glsr_migrations');
    $wpdb->query("DELETE FROM {$wpdb->usermeta} WHERE meta_key = '_glsr_notices'");
}

function glsr_uninstall_minimal_drop_foreign_keys()
{
    global $wpdb;
    if (defined('DB_ENGINE') && 'sqlite' === DB_ENGINE) {
        return;
    }
    $constraints = $wpdb->get_results("
        SELECT CONSTRAINT_NAME, TABLE_NAME
        FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS
        WHERE CONSTRAINT_SCHEMA = '{$wpdb->dbname}'
    ");
    $tables = [ // order is intentional
        $wpdb->prefix.'glsr_assigned_posts',
        $wpdb->prefix.'glsr_assigned_terms',
        $wpdb->prefix.'glsr_assigned_users',
        $wpdb->prefix.'glsr_ratings',
    ];
    foreach ($tables as $tablename) {
        foreach ($constraints as $constraint) {
            if ($tablename !== $constraint->TABLE_NAME) {
                continue;
            }
            $wpdb->query("
                ALTER TABLE {$constraint->TABLE_NAME} DROP FOREIGN KEY {$constraint->CONSTRAINT_NAME};
            "); // true if constraint exists, false if it doesn't exist
        }
    }
    // delete the saved database version
    delete_option('glsr_db_version');
}

if (!is_multisite()) {
    glsr_uninstall();
    return;
}
if (!function_exists('get_sites')) {
    global $wpdb;
    $siteIds = $wpdb->get_col("SELECT blog_id FROM {$wpdb->blogs}");
} else {
    $siteIds = get_sites(['count' => false, 'fields' => 'ids']);
}
foreach ($siteIds as $siteId) {
    switch_to_blog($siteId);
    glsr_uninstall();
    restore_current_blog();
}

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