| 1 |
<?php |
| 2 |
/** |
| 3 |
* Appointment shortcode configuration normalization and signing. |
| 4 |
* |
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* @package Booking Calendar |
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*/ |
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|
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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|
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/** |
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* Convert a comma-separated value or array to unique positive IDs. |
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* |
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* @param mixed $value Raw ID collection. |
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* |
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* @return int[] Normalized IDs. |
| 18 |
*/ |
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function wpbc_booking_appointment_normalize_ids( $value ) { |
| 20 |
if ( is_string( $value ) ) { |
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$value = preg_split( '/[;,\s]+/', $value, -1, PREG_SPLIT_NO_EMPTY ); |
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} |
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|
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return array_values( array_unique( array_filter( array_map( 'absint', (array) $value ) ) ) ); |
| 25 |
} |
| 26 |
|
| 27 |
/** |
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* Convert a shortcode-style value to a strict Boolean. |
| 29 |
* |
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* @param mixed $raw_value Raw Boolean-like value. |
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* @param bool $default_value Value used when the raw value is null. |
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* |
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* @return bool Normalized Boolean. |
| 34 |
*/ |
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function wpbc_booking_appointment_normalize_boolean( $raw_value, $default_value = false ) { |
| 36 |
if ( null === $raw_value ) { |
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return (bool) $default_value; |
| 38 |
} |
| 39 |
|
| 40 |
if ( is_string( $raw_value ) ) { |
| 41 |
$raw_value = strtolower( trim( $raw_value ) ); |
| 42 |
} |
| 43 |
|
| 44 |
return ! in_array( $raw_value, array( false, 0, '0', 'false', 'off', 'no', '' ), true ); |
| 45 |
} |
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|
| 47 |
/** |
| 48 |
* Normalize a safe public Appointment catalog item width. |
| 49 |
* |
| 50 |
* Bare numbers are treated as pixels. Only simple dimensions are accepted so |
| 51 |
* a shortcode value cannot introduce an arbitrary inline CSS declaration. |
| 52 |
* |
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* @param mixed $raw_width Raw shortcode width. |
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* |
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* @return string Normalized CSS width or an empty string for automatic width. |
| 56 |
*/ |
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function wpbc_booking_appointment_normalize_css_width( $raw_width ) { |
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if ( is_int( $raw_width ) || is_float( $raw_width ) ) { |
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$raw_width = (string) $raw_width . 'px'; |
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} |
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|
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$raw_width = strtolower( trim( (string) $raw_width ) ); |
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if ( '' === $raw_width || 'auto' === $raw_width ) { |
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return ''; |
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} |
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if ( preg_match( '/^\d+(?:\.\d+)?$/', $raw_width ) ) { |
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$raw_width .= 'px'; |
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} |
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if ( ! preg_match( '/^(\d+(?:\.\d+)?)(px|%|rem|em|vw)$/', $raw_width, $matches ) ) { |
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return ''; |
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} |
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|
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$numeric_width = (float) $matches[1]; |
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$width_unit = $matches[2]; |
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$maximum_width = in_array( $width_unit, array( '%', 'vw' ), true ) ? 100 : ( 'px' === $width_unit ? 2000 : 100 ); |
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if ( $numeric_width <= 0 || $numeric_width > $maximum_width ) { |
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return ''; |
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} |
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|
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$normalized_width = rtrim( rtrim( number_format( $numeric_width, 4, '.', '' ), '0' ), '.' ); |
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|
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return $normalized_width . $width_unit; |
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} |
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|
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/** |
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* Normalize shortcode attributes into the stable AJAX configuration contract. |
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* |
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* @param mixed $attributes Raw shortcode attributes or decoded configuration. |
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* |
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* @return array<string,mixed> Safe Appointment configuration. |
| 91 |
*/ |
| 92 |
function wpbc_booking_appointment_normalize_config( $attributes ) { |
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$attributes = is_array( $attributes ) ? $attributes : array(); |
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$defaults = array( |
| 95 |
'service_id' => 0, |
| 96 |
'provider_id' => 0, |
| 97 |
'service_ids' => array(), |
| 98 |
'provider_ids' => array(), |
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'cal_count' => 1, |
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'start_month_calendar' => false, |
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'calendar_dates_start' => '', |
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'calendar_dates_end' => '', |
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'options' => '', |
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'form_type' => '', |
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'auto_select_provider' => false, |
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'catalog_layout' => 'grid', |
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'show_resource_filters' => false, |
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'show_resource_image' => true, |
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'show_resource_title' => true, |
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'show_resource_description' => true, |
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'catalog_item_width' => '', |
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'catalog_item_max_width' => 0, |
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'catalog_grid_items_per_row' => 0, |
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'catalog_list_items_per_row' => 0, |
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'show_resource_hierarchy' => true, |
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'show_availability' => true, |
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'show_starting_price' => true, |
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'show_progress' => true, |
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'progress_item_1_title' => null, |
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'progress_item_1_number' => null, |
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'progress_item_2_title' => null, |
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'progress_item_2_number' => null, |
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'progress_item_3_title' => null, |
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'progress_item_3_number' => null, |
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'screen_1_title' => null, |
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'screen_1_description' => null, |
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'screen_2_title' => null, |
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'screen_2_description' => null, |
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'allow_past' => false, |
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'return_url' => '', |
| 131 |
); |
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|
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// Decode the public shortcode aliases only before values enter the signed token. |
| 134 |
if ( isset( $attributes['services'] ) && ! isset( $attributes['service_ids'] ) ) { |
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$attributes['service_ids'] = $attributes['services']; |
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} |
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if ( isset( $attributes['providers'] ) && ! isset( $attributes['provider_ids'] ) ) { |
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$attributes['provider_ids'] = $attributes['providers']; |
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} |
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if ( isset( $attributes['nummonths'] ) && ! isset( $attributes['cal_count'] ) ) { |
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$attributes['cal_count'] = $attributes['nummonths']; |
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} |
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if ( isset( $attributes['startmonth'] ) && ! isset( $attributes['start_month_calendar'] ) ) { |
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$attributes['start_month_calendar'] = $attributes['startmonth']; |
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} |
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|
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// Normalize earlier descriptive names before signing one indexed contract. |
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$progress_attribute_aliases = array( |
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'progress_service_title' => 'progress_item_1_title', |
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'progress_service_number' => 'progress_item_1_number', |
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'progress_provider_title' => 'progress_item_2_title', |
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'progress_provider_number' => 'progress_item_2_number', |
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'progress_details_title' => 'progress_item_3_title', |
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'progress_details_number' => 'progress_item_3_number', |
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); |
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foreach ( $progress_attribute_aliases as $legacy_attribute => $normalized_attribute ) { |
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if ( array_key_exists( $legacy_attribute, $attributes ) && ! array_key_exists( $normalized_attribute, $attributes ) ) { |
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$attributes[ $normalized_attribute ] = $attributes[ $legacy_attribute ]; |
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} |
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unset( $attributes[ $legacy_attribute ] ); |
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} |
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|
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$config = wp_parse_args( $attributes, $defaults ); |
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|
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$config['service_id'] = absint( $config['service_id'] ); |
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$config['provider_id'] = absint( $config['provider_id'] ); |
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$config['service_ids'] = wpbc_booking_appointment_normalize_ids( $config['service_ids'] ); |
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$config['provider_ids'] = wpbc_booking_appointment_normalize_ids( $config['provider_ids'] ); |
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$config['cal_count'] = min( 24, max( 1, absint( $config['cal_count'] ) ) ); |
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|
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if ( $config['service_id'] && ! in_array( $config['service_id'], $config['service_ids'], true ) ) { |
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$config['service_ids'][] = $config['service_id']; |
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} |
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if ( $config['provider_id'] && ! in_array( $config['provider_id'], $config['provider_ids'], true ) ) { |
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$config['provider_ids'][] = $config['provider_id']; |
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} |
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|
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$start_month = $config['start_month_calendar']; |
| 179 |
if ( is_array( $start_month ) ) { |
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$year = isset( $start_month[0] ) ? absint( $start_month[0] ) : 0; |
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$month = isset( $start_month[1] ) ? absint( $start_month[1] ) : 0; |
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$start_month = ( $year && $month >= 1 && $month <= 12 ) ? array( $year, $month ) : false; |
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} elseif ( is_string( $start_month ) && preg_match( '/^(\d{4})[-\/]?(\d{1,2})$/', $start_month, $matches ) ) { |
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$month = absint( $matches[2] ); |
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$start_month = ( $month >= 1 && $month <= 12 ) ? array( absint( $matches[1] ), $month ) : false; |
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} else { |
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$start_month = false; |
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} |
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$config['start_month_calendar'] = $start_month; |
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|
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foreach ( array( 'calendar_dates_start', 'calendar_dates_end' ) as $date_key ) { |
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$date_value = sanitize_text_field( (string) $config[ $date_key ] ); |
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$config[ $date_key ] = preg_match( '/^\d{4}-\d{2}-\d{2}$/', $date_value ) ? $date_value : ''; |
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} |
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|
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$config['options'] = sanitize_text_field( (string) $config['options'] ); |
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$config['form_type'] = sanitize_text_field( (string) $config['form_type'] ); |
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$config['return_url'] = esc_url_raw( (string) $config['return_url'] ); |
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$config['auto_select_provider'] = wpbc_booking_appointment_normalize_boolean( $config['auto_select_provider'] ); |
| 200 |
$config['catalog_layout'] = 'list' === sanitize_key( (string) $config['catalog_layout'] ) ? 'list' : 'grid'; |
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$config['show_resource_filters'] = wpbc_booking_appointment_normalize_boolean( $config['show_resource_filters'] ); |
| 202 |
$config['show_resource_image'] = wpbc_booking_appointment_normalize_boolean( $config['show_resource_image'], true ); |
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$config['show_resource_title'] = wpbc_booking_appointment_normalize_boolean( $config['show_resource_title'], true ); |
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$config['show_resource_description'] = wpbc_booking_appointment_normalize_boolean( $config['show_resource_description'], true ); |
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$config['catalog_item_width'] = wpbc_booking_appointment_normalize_css_width( $config['catalog_item_width'] ); |
| 206 |
$config['catalog_item_max_width'] = absint( $config['catalog_item_max_width'] ); |
| 207 |
if ( $config['catalog_item_max_width'] > 0 ) { |
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$config['catalog_item_max_width'] = min( 1200, max( 280, $config['catalog_item_max_width'] ) ); |
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} |
| 210 |
$config['catalog_grid_items_per_row'] = min( 12, absint( $config['catalog_grid_items_per_row'] ) ); |
| 211 |
$config['catalog_list_items_per_row'] = min( 12, absint( $config['catalog_list_items_per_row'] ) ); |
| 212 |
$config['show_resource_hierarchy'] = wpbc_booking_appointment_normalize_boolean( $config['show_resource_hierarchy'], true ); |
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$config['show_availability'] = wpbc_booking_appointment_normalize_boolean( $config['show_availability'], true ); |
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$config['show_starting_price'] = wpbc_booking_appointment_normalize_boolean( $config['show_starting_price'], true ); |
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$config['show_progress'] = wpbc_booking_appointment_normalize_boolean( $config['show_progress'], true ); |
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$display_text_keys = array( |
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'progress_item_1_title', |
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'progress_item_1_number', |
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'progress_item_2_title', |
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'progress_item_2_number', |
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'progress_item_3_title', |
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'progress_item_3_number', |
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'screen_1_title', |
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'screen_1_description', |
| 225 |
'screen_2_title', |
| 226 |
'screen_2_description', |
| 227 |
); |
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foreach ( $display_text_keys as $display_text_key ) { |
| 229 |
if ( null !== $config[ $display_text_key ] ) { |
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$config[ $display_text_key ] = sanitize_text_field( (string) $config[ $display_text_key ] ); |
| 231 |
} |
| 232 |
} |
| 233 |
$config['allow_past'] = wpbc_booking_appointment_normalize_boolean( $config['allow_past'] ); |
| 234 |
|
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return (array) apply_filters( 'wpbc_booking_appointment_normalized_config', $config, $attributes ); |
| 236 |
} |
| 237 |
|
| 238 |
/** |
| 239 |
* Check whether signed Appointment configuration enables past bookings. |
| 240 |
* |
| 241 |
* The site author explicitly opts in through the shortcode. The normalized |
| 242 |
* value is included in the signed Appointment context and verified again by |
| 243 |
* the save handler, so a visitor cannot enable it by modifying AJAX data. |
| 244 |
* |
| 245 |
* @param array<string,mixed> $config Normalized or decoded Appointment configuration. |
| 246 |
* |
| 247 |
* @return bool True when the signed configuration explicitly enables past bookings. |
| 248 |
*/ |
| 249 |
function wpbc_booking_appointment_is_past_booking_enabled( $config ) { |
| 250 |
return ! empty( $config['allow_past'] ); |
| 251 |
} |
| 252 |
|
| 253 |
/** |
| 254 |
* Base64-url encode a binary or text value without padding. |
| 255 |
* |
| 256 |
* @param string $value Value to encode. |
| 257 |
* |
| 258 |
* @return string URL-safe encoded value. |
| 259 |
*/ |
| 260 |
function wpbc_booking_appointment_base64url_encode( $value ) { |
| 261 |
return rtrim( strtr( base64_encode( (string) $value ), '+/', '-_' ), '=' ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode |
| 262 |
} |
| 263 |
|
| 264 |
/** |
| 265 |
* Decode a base64-url value with strict validation. |
| 266 |
* |
| 267 |
* @param string $value Encoded value. |
| 268 |
* |
| 269 |
* @return string|false Decoded value or false. |
| 270 |
*/ |
| 271 |
function wpbc_booking_appointment_base64url_decode( $value ) { |
| 272 |
$value = strtr( (string) $value, '-_', '+/' ); |
| 273 |
$padding = strlen( $value ) % 4; |
| 274 |
if ( $padding ) { |
| 275 |
$value .= str_repeat( '=', 4 - $padding ); |
| 276 |
} |
| 277 |
|
| 278 |
return base64_decode( $value, true ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode |
| 279 |
} |
| 280 |
|
| 281 |
/** |
| 282 |
* Sign normalized shortcode configuration for public AJAX round trips. |
| 283 |
* |
| 284 |
* @param array<string,mixed> $config Normalized configuration. |
| 285 |
* |
| 286 |
* @return string Signed opaque configuration token. |
| 287 |
*/ |
| 288 |
function wpbc_booking_appointment_encode_config( $config ) { |
| 289 |
$payload = wpbc_booking_appointment_base64url_encode( wp_json_encode( wpbc_booking_appointment_normalize_config( $config ) ) ); |
| 290 |
$signature = hash_hmac( 'sha256', $payload, wp_salt( 'auth' ), true ); |
| 291 |
|
| 292 |
return $payload . '.' . wpbc_booking_appointment_base64url_encode( $signature ); |
| 293 |
} |
| 294 |
|
| 295 |
/** |
| 296 |
* Verify and decode a public AJAX configuration token. |
| 297 |
* |
| 298 |
* @param string $token Signed token. |
| 299 |
* |
| 300 |
* @return array<string,mixed>|WP_Error Normalized configuration or validation error. |
| 301 |
*/ |
| 302 |
function wpbc_booking_appointment_decode_config( $token ) { |
| 303 |
$parts = explode( '.', (string) $token, 2 ); |
| 304 |
if ( 2 !== count( $parts ) ) { |
| 305 |
return new WP_Error( 'appointment_config_invalid', __( 'The Appointment configuration is invalid. Reload the page and try again.', 'booking' ) ); |
| 306 |
} |
| 307 |
|
| 308 |
$expected_signature = hash_hmac( 'sha256', $parts[0], wp_salt( 'auth' ), true ); |
| 309 |
$actual_signature = wpbc_booking_appointment_base64url_decode( $parts[1] ); |
| 310 |
if ( false === $actual_signature || ! hash_equals( $expected_signature, $actual_signature ) ) { |
| 311 |
return new WP_Error( 'appointment_config_invalid', __( 'The Appointment configuration is invalid. Reload the page and try again.', 'booking' ) ); |
| 312 |
} |
| 313 |
|
| 314 |
$json = wpbc_booking_appointment_base64url_decode( $parts[0] ); |
| 315 |
$data = false !== $json ? json_decode( $json, true ) : null; |
| 316 |
if ( ! is_array( $data ) ) { |
| 317 |
return new WP_Error( 'appointment_config_invalid', __( 'The Appointment configuration is invalid. Reload the page and try again.', 'booking' ) ); |
| 318 |
} |
| 319 |
|
| 320 |
return wpbc_booking_appointment_normalize_config( $data ); |
| 321 |
} |
| 322 |
|
| 323 |
/** |
| 324 |
* Sign one server-validated Service/Provider selection for booking submission. |
| 325 |
* |
| 326 |
* The selection is narrowed to exactly one Service and Provider. The token is |
| 327 |
* attached to the rendered native form and verified again by the core booking |
| 328 |
* save path, preventing another Appointment block from supplying its context. |
| 329 |
* |
| 330 |
* @param array<string,mixed> $config Original normalized shortcode configuration. |
| 331 |
* @param int $service_id Selected Service ID. |
| 332 |
* @param int $provider_id Selected Provider resource ID. |
| 333 |
* |
| 334 |
* @return string Signed selection token, or an empty string for invalid IDs. |
| 335 |
*/ |
| 336 |
function wpbc_booking_appointment_encode_submission_context( $config, $service_id, $provider_id ) { |
| 337 |
$service_id = absint( $service_id ); |
| 338 |
$provider_id = absint( $provider_id ); |
| 339 |
if ( ! $service_id || ! $provider_id ) { |
| 340 |
return ''; |
| 341 |
} |
| 342 |
|
| 343 |
$context = wpbc_booking_appointment_normalize_config( $config ); |
| 344 |
$context['service_id'] = $service_id; |
| 345 |
$context['provider_id'] = $provider_id; |
| 346 |
$context['service_ids'] = array( $service_id ); |
| 347 |
$context['provider_ids'] = array( $provider_id ); |
| 348 |
|
| 349 |
return wpbc_booking_appointment_encode_config( $context ); |
| 350 |
} |
| 351 |
|
| 352 |
/** |
| 353 |
* Verify that a signed submission context matches the submitted booking pair. |
| 354 |
* |
| 355 |
* @param string $token Signed Appointment selection token. |
| 356 |
* @param int $service_id Submitted Service ID. |
| 357 |
* @param int $provider_id Submitted Provider resource ID. |
| 358 |
* |
| 359 |
* @return array<string,mixed>|WP_Error Verified context or controlled error. |
| 360 |
*/ |
| 361 |
function wpbc_booking_appointment_validate_submission_context( $token, $service_id, $provider_id ) { |
| 362 |
$service_id = absint( $service_id ); |
| 363 |
$provider_id = absint( $provider_id ); |
| 364 |
if ( '' === trim( (string) $token ) ) { |
| 365 |
return new WP_Error( 'appointment_context_required', __( 'The Appointment selection has expired. Please start over and try again.', 'booking' ) ); |
| 366 |
} |
| 367 |
|
| 368 |
$context = wpbc_booking_appointment_decode_config( $token ); |
| 369 |
if ( is_wp_error( $context ) ) { |
| 370 |
return new WP_Error( 'appointment_context_invalid', __( 'The Appointment selection is invalid. Please start over and try again.', 'booking' ) ); |
| 371 |
} |
| 372 |
if ( $service_id !== absint( $context['service_id'] ) || $provider_id !== absint( $context['provider_id'] ) ) { |
| 373 |
return new WP_Error( 'appointment_context_mismatch', __( 'The selected Service and Provider do not match this Appointment form. Please start over and try again.', 'booking' ) ); |
| 374 |
} |
| 375 |
|
| 376 |
return $context; |
| 377 |
} |
| 378 |
|
