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<?php |
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/** |
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* Processes form input. |
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* |
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* @package MainWP/Dashboard |
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*/ |
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|
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namespace MainWP\Dashboard\Module\Log; |
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|
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/** |
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* Class - Log_Filter_Input |
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*/ |
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class Log_Filter_Input { |
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/** |
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* Callbacks to be used for input validation/sanitation. |
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* |
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* @var array |
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*/ |
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public static $filter_callbacks = array( |
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FILTER_DEFAULT => null, |
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// Validate. |
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FILTER_VALIDATE_BOOLEAN => 'is_bool', |
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FILTER_VALIDATE_EMAIL => 'is_email', |
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FILTER_VALIDATE_FLOAT => 'is_float', |
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FILTER_VALIDATE_INT => 'is_int', |
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FILTER_VALIDATE_IP => array( __CLASS__, 'is_ip_address' ), |
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FILTER_VALIDATE_REGEXP => array( __CLASS__, 'is_regex' ), |
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FILTER_VALIDATE_URL => 'wp_http_validate_url', |
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// Sanitize. |
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FILTER_SANITIZE_EMAIL => 'sanitize_email', |
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FILTER_SANITIZE_ENCODED => 'esc_url_raw', |
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FILTER_SANITIZE_NUMBER_FLOAT => 'floatval', |
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FILTER_SANITIZE_NUMBER_INT => 'intval', |
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FILTER_SANITIZE_SPECIAL_CHARS => 'htmlspecialchars', |
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FILTER_SANITIZE_STRING_COMPATIBLE => 'sanitize_text_field', // to compatible: FILTER_SANITIZE_STRING. |
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FILTER_SANITIZE_URL => 'esc_url_raw', |
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// Other. |
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FILTER_UNSAFE_RAW => null, |
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); |
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|
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/** |
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* Returns input variable |
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* |
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* @param int $type Input type. |
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* @param string $variable_name Variable key. |
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* @param int $filter Filter callback. |
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* @param array $options Filter callback parameters. |
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* @throws \Exception Invalid input type provided. |
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* @return mixed |
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*/ |
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public static function super( $type, $variable_name, $filter = null, $options = array() ) { |
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$super = null; |
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|
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// @codingStandardsIgnoreStart |
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switch ( $type ) { |
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case INPUT_POST : |
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$super = $_POST; |
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break; |
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case INPUT_GET : |
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$super = $_GET; |
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break; |
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case INPUT_COOKIE : |
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$super = $_COOKIE; |
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break; |
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case INPUT_ENV : |
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$super = $_ENV; |
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break; |
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case INPUT_SERVER : |
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$super = $_SERVER; |
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break; |
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} |
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// @codingStandardsIgnoreEnd |
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|
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if ( is_null( $super ) ) { |
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throw new \Exception( esc_html__( 'Invalid use, type must be one of INPUT_* family.', 'mainwp' ) ); |
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} |
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|
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$var = isset( $super[ $variable_name ] ) ? $super[ $variable_name ] : null; |
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$var = self::filter( $var, $filter, $options ); |
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|
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return $var; |
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} |
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|
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/** |
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* Sanitize or validate input. |
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* |
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* @param mixed $var_value Raw input. |
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* @param int $filter Filter callback. |
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* @param array $options Filter callback parameters. |
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* @throws \Exception Unsupported filter provided. |
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* @return mixed |
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*/ |
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public static function filter( $var_value, $filter = null, $options = array() ) { |
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// Default filter is a sanitizer, not validator. |
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$filter_type = 'sanitizer'; |
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|
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// Only filter value if it is not null. |
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if ( isset( $var_value ) && $filter && FILTER_DEFAULT !== $filter ) { |
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if ( ! isset( self::$filter_callbacks[ $filter ] ) ) { |
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throw new \Exception( esc_html__( 'Filter not supported.', 'mainwp' ) ); |
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} |
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|
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$filter_callback = self::$filter_callbacks[ $filter ]; |
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$result = call_user_func( $filter_callback, $var_value ); |
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|
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/** |
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* "filter_var / filter_input" treats validation/sanitization filters the same |
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* they both return output and change the var value, this shouldn't be the case here. |
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* We'll do a boolean check on validation function, and let sanitizers change the value |
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*/ |
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$filter_type = ( $filter < 500 ) ? 'validator' : 'sanitizer'; |
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if ( 'validator' === $filter_type ) { // Validation functions. |
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if ( ! $result ) { |
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$var_value = false; |
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} |
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} else { // Santization functions. |
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$var_value = $result; |
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} |
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} |
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|
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// Detect FILTER_REQUIRE_ARRAY flag. |
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if ( isset( $var_value ) && is_int( $options ) && FILTER_REQUIRE_ARRAY === $options ) { |
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if ( ! is_array( $var_value ) ) { |
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$var_value = ( 'validator' === $filter_type ) ? false : null; |
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} |
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} |
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|
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// Polyfill the `default` attribute only, for now. |
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if ( is_array( $options ) && ! empty( $options['options']['default'] ) ) { |
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if ( 'validator' === $filter_type && false === $var_value ) { |
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$var_value = $options['options']['default']; |
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} elseif ( 'sanitizer' === $filter_type && null === $var_value ) { |
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$var_value = $options['options']['default']; |
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} |
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} |
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|
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return $var_value; |
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} |
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|
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/** |
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* Returns whether the variable is a Regular Expression or not? |
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* |
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* @param string $var_value Raw input. |
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* @return boolean |
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*/ |
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public static function is_regex( $var_value ) { |
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// @codingStandardsIgnoreStart |
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$test = @preg_match( $var_value, '' ); |
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// @codingStandardsIgnoreEnd |
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|
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return false !== $test; |
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} |
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|
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/** |
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* Returns whether the variable is an IP address or not? |
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* |
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* @param string $var_value Raw input. |
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* @return boolean |
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*/ |
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public static function is_ip_address( $var_value ) { |
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return false !== \WP_Http::is_ip_address( $var_value ); |
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} |
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} |
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