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<?php |
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|
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namespace King_Addons\Widgets\Login_Register_Form; |
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|
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if (!defined('ABSPATH')) { |
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exit; // Exit if accessed directly. |
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} |
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|
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/** |
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* Security Manager for Login Register Form widget |
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* Handles rate limiting, file validation, and other security measures |
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*/ |
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class Security_Manager |
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{ |
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/** |
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* Rate limiting settings |
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*/ |
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const MAX_LOGIN_ATTEMPTS = 5; |
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const MAX_REGISTER_ATTEMPTS = 3; |
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const MAX_LOST_PASSWORD_ATTEMPTS = 3; |
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const LOCKOUT_DURATION = 900; // 15 minutes in seconds |
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const ALLOWED_FILE_TYPES = ['image/jpeg', 'image/png', 'image/gif', 'application/pdf', 'text/plain']; |
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const MAX_FILE_SIZE = 5242880; // 5MB in bytes |
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|
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/** |
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* Check if IP is rate limited for specific action |
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*/ |
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public static function is_rate_limited($action, $ip_address = null) |
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{ |
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if (!$ip_address) { |
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$ip_address = self::get_client_ip(); |
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} |
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|
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$transient_key = "king_addons_{$action}_attempts_" . md5($ip_address); |
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$attempts = get_transient($transient_key); |
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|
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$max_attempts = self::get_max_attempts($action); |
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|
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return $attempts !== false && $attempts >= $max_attempts; |
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} |
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|
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/** |
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* Record a failed attempt |
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*/ |
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public static function record_failed_attempt($action, $ip_address = null) |
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{ |
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if (!$ip_address) { |
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$ip_address = self::get_client_ip(); |
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} |
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|
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$transient_key = "king_addons_{$action}_attempts_" . md5($ip_address); |
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$attempts = get_transient($transient_key); |
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|
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if ($attempts === false) { |
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$attempts = 0; |
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} |
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|
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$attempts++; |
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set_transient($transient_key, $attempts, self::LOCKOUT_DURATION); |
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|
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// Log security event |
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error_log("King Addons Security: Failed {$action} attempt #{$attempts} from IP {$ip_address}"); |
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|
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return $attempts; |
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} |
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|
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/** |
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* Clear failed attempts (on successful login/registration) |
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*/ |
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public static function clear_failed_attempts($action, $ip_address = null) |
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{ |
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if (!$ip_address) { |
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$ip_address = self::get_client_ip(); |
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} |
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|
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$transient_key = "king_addons_{$action}_attempts_" . md5($ip_address); |
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delete_transient($transient_key); |
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} |
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|
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/** |
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* Get remaining lockout time |
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*/ |
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public static function get_remaining_lockout_time($action, $ip_address = null) |
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{ |
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if (!$ip_address) { |
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$ip_address = self::get_client_ip(); |
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} |
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|
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$transient_key = "king_addons_{$action}_attempts_" . md5($ip_address); |
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$expiration = get_option('_transient_timeout_' . $transient_key); |
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|
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if ($expiration === false) { |
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return 0; |
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} |
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|
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$remaining = $expiration - time(); |
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return max(0, $remaining); |
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} |
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|
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/** |
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* Validate uploaded file |
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*/ |
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public static function validate_file_upload($file_data) |
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{ |
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// Check if file was uploaded |
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if (empty($file_data['name']) || empty($file_data['tmp_name'])) { |
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return [ |
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'valid' => false, |
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'error' => esc_html__('No file uploaded.', 'king-addons') |
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]; |
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} |
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|
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// Check file size |
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if ($file_data['size'] > self::MAX_FILE_SIZE) { |
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return [ |
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'valid' => false, |
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'error' => sprintf( |
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esc_html__('File size exceeds maximum allowed size of %s.', 'king-addons'), |
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size_format(self::MAX_FILE_SIZE) |
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) |
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]; |
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} |
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|
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// Check MIME type |
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$file_type = wp_check_filetype($file_data['name']); |
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if (!$file_type['type'] || !in_array($file_type['type'], self::ALLOWED_FILE_TYPES)) { |
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return [ |
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'valid' => false, |
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'error' => esc_html__('File type not allowed. Please upload images (JPG, PNG, GIF), PDF, or text files only.', 'king-addons') |
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]; |
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} |
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|
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// Additional security checks |
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$real_mime = mime_content_type($file_data['tmp_name']); |
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if ($real_mime && $real_mime !== $file_type['type']) { |
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return [ |
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'valid' => false, |
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'error' => esc_html__('File type mismatch detected. Upload rejected for security.', 'king-addons') |
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]; |
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} |
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|
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// Check for malicious content in text files (limit file size to prevent DoS) |
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if (in_array($file_type['type'], ['text/plain', 'application/pdf'])) { |
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// Security fix: Check file size before reading to prevent DoS |
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$file_size = filesize($file_data['tmp_name']); |
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if ($file_size > 1024 * 1024) { // 1MB limit for content scanning |
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return [ |
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'valid' => false, |
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'error' => esc_html__('File too large for content scanning.', 'king-addons') |
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]; |
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} |
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|
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$content = file_get_contents($file_data['tmp_name']); |
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if (self::contains_malicious_content($content)) { |
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return [ |
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'valid' => false, |
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'error' => esc_html__('File contains suspicious content and cannot be uploaded.', 'king-addons') |
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]; |
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} |
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} |
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|
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return ['valid' => true]; |
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} |
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|
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/** |
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* Sanitize social login data |
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*/ |
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public static function sanitize_social_data($data, $provider) |
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{ |
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$sanitized = []; |
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|
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// Basic required fields |
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$sanitized['email'] = isset($data['email']) ? sanitize_email($data['email']) : ''; |
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$sanitized['name'] = isset($data['name']) ? sanitize_text_field($data['name']) : ''; |
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$sanitized['provider_id'] = isset($data['id']) ? sanitize_text_field($data['id']) : ''; |
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|
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// Optional fields |
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$sanitized['first_name'] = isset($data['given_name']) ? sanitize_text_field($data['given_name']) : ''; |
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$sanitized['last_name'] = isset($data['family_name']) ? sanitize_text_field($data['family_name']) : ''; |
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|
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// Picture URL with strict validation |
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if (isset($data['picture'])) { |
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$picture_url = esc_url_raw($data['picture']); |
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// Additional validation for picture URL |
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if (filter_var($picture_url, FILTER_VALIDATE_URL) && self::is_safe_image_url($picture_url)) { |
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$sanitized['picture'] = $picture_url; |
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} else { |
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$sanitized['picture'] = ''; |
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} |
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} else { |
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$sanitized['picture'] = ''; |
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} |
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|
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// Validate email domain for additional security |
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if (!empty($sanitized['email']) && !self::is_safe_email_domain($sanitized['email'])) { |
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error_log("King Addons Security: Suspicious email domain from {$provider}: {$sanitized['email']}"); |
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} |
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|
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return $sanitized; |
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} |
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|
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/** |
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* Check for suspicious patterns in registration data |
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*/ |
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public static function detect_suspicious_registration($data) |
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{ |
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$suspicious_patterns = [ |
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// Common spam patterns |
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'/\b(viagra|cialis|casino|poker|lottery|winner|congratulations)\b/i', |
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// Suspicious email patterns |
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'/\b\d{10,}@/', // Long numeric sequences in email |
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// Bot-like usernames |
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'/^(user|test|admin)\d+$/i', |
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]; |
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|
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$text_to_check = implode(' ', [ |
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$data['username'] ?? '', |
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$data['email'] ?? '', |
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$data['first_name'] ?? '', |
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$data['last_name'] ?? '' |
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]); |
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|
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foreach ($suspicious_patterns as $pattern) { |
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if (preg_match($pattern, $text_to_check)) { |
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error_log("King Addons Security: Suspicious registration pattern detected: {$pattern}"); |
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return true; |
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} |
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} |
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|
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return false; |
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} |
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|
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/** |
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* Enhanced password strength validation |
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*/ |
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public static function validate_password_strength($password) |
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{ |
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$strength = [ |
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'score' => 0, |
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'feedback' => [], |
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'valid' => true |
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]; |
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|
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// Basic length check |
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if (strlen($password) < 8) { |
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$strength['valid'] = false; |
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$strength['feedback'][] = esc_html__('Password must be at least 8 characters long.', 'king-addons'); |
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return $strength; |
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} |
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|
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// Check for character variety |
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$patterns = [ |
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'lowercase' => '/[a-z]/', |
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'uppercase' => '/[A-Z]/', |
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'numbers' => '/\d/', |
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'special' => '/[!@#$%^&*(),.?":{}|<>]/' |
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]; |
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|
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foreach ($patterns as $type => $pattern) { |
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if (preg_match($pattern, $password)) { |
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$strength['score']++; |
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} |
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} |
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|
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// Check against common passwords |
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if (self::is_common_password($password)) { |
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$strength['valid'] = false; |
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$strength['feedback'][] = esc_html__('This password is too common. Please choose a more unique password.', 'king-addons'); |
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} |
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|
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// Length bonus |
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if (strlen($password) >= 12) { |
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$strength['score']++; |
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} |
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|
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// Determine if password is strong enough |
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if ($strength['score'] < 3) { |
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$strength['valid'] = false; |
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$strength['feedback'][] = esc_html__('Password should contain a mix of uppercase, lowercase, numbers, and special characters.', 'king-addons'); |
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} |
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|
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return $strength; |
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} |
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|
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/** |
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* Private helper methods |
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*/ |
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private static function get_client_ip() |
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{ |
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$ip_keys = ['HTTP_X_FORWARDED_FOR', 'HTTP_X_REAL_IP', 'HTTP_CLIENT_IP', 'REMOTE_ADDR']; |
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|
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foreach ($ip_keys as $key) { |
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if (!empty($_SERVER[$key])) { |
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$ip = trim($_SERVER[$key]); |
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// Handle comma-separated IPs (from load balancers) |
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if (strpos($ip, ',') !== false) { |
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$ip = trim(explode(',', $ip)[0]); |
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} |
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if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) { |
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return $ip; |
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} |
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} |
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} |
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|
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return $_SERVER['REMOTE_ADDR'] ?? '127.0.0.1'; |
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} |
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|
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private static function get_max_attempts($action) |
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{ |
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switch ($action) { |
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case 'login': |
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return self::MAX_LOGIN_ATTEMPTS; |
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case 'register': |
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return self::MAX_REGISTER_ATTEMPTS; |
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case 'lostpassword': |
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return self::MAX_LOST_PASSWORD_ATTEMPTS; |
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default: |
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return 3; |
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} |
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} |
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|
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private static function contains_malicious_content($content) |
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{ |
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$malicious_patterns = [ |
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'/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/mi', |
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'/javascript:/i', |
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'/data:text\/html/i', |
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'/\bon\w+\s*=/i', // Event handlers like onclick |
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'/eval\s*\(/i', |
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'/exec\s*\(/i' |
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]; |
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|
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foreach ($malicious_patterns as $pattern) { |
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if (preg_match($pattern, $content)) { |
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return true; |
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} |
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} |
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|
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return false; |
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} |
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|
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private static function is_safe_image_url($url) |
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{ |
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// Only allow images from trusted domains |
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$trusted_domains = [ |
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'lh3.googleusercontent.com', // Google profile pictures |
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'platform-lookaside.fbsbx.com', // Facebook profile pictures |
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'graph.facebook.com', // Facebook graph API |
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'scontent.xx.fbcdn.net' // Facebook CDN |
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]; |
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|
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$parsed_url = parse_url($url); |
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$domain = $parsed_url['host'] ?? ''; |
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|
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return in_array($domain, $trusted_domains); |
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} |
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|
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private static function is_safe_email_domain($email) |
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{ |
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// Check against known suspicious domains |
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$suspicious_domains = [ |
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'guerrillamail.com', |
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'10minutemail.com', |
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'mailinator.com', |
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'tempmail.org' |
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]; |
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|
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$domain = substr(strrchr($email, "@"), 1); |
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return !in_array(strtolower($domain), $suspicious_domains); |
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} |
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|
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private static function is_common_password($password) |
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{ |
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$common_passwords = [ |
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'password', '123456', '123456789', 'qwerty', 'abc123', |
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'password123', 'admin', 'letmein', 'welcome', 'monkey', |
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'dragon', 'master', 'sunshine', 'princess', 'football' |
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]; |
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|
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return in_array(strtolower($password), $common_passwords); |
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} |
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} |
