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<?php /* Copyright 2015-2024 John Havlik (email : john.havlik@mtekk.us) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ require_once(dirname(__FILE__) . '/includes/block_direct_access.php'); //Do a PHP version check, require 5.3 or newer if(version_compare(phpversion(), '5.3.0', '<')) { //Only purpose of this function is to echo out the PHP version error function bcn_phpold() { printf('<div class="notice notice-error"><p>' . __('Your PHP version is too old, please upgrade to a newer version. Your version is %1$s, Breadcrumb NavXT requires %2$s', 'breadcrumb-navxt') . '</p></div>', phpversion(), '5.3.0'); } //If we are in the admin, let's print a warning then return if(is_admin()) { add_action('admin_notices', 'bcn_phpold'); } return; } class bcn_rest_controller { const version = '1'; protected $unique_prefix = 'bcn'; protected $breadcrumb_trail = null; protected $methods = array('GET', 'OPTIONS'); /** * Default constructor * * @param bcn_breadcrumb_trail $breadcrumb_trail An instance of a bcn_breadcrumb_trail object to use for everything * @param string $unique_prefix The unique prefix to use for the API endpoint */ public function __construct(bcn_breadcrumb_trail $breadcrumb_trail, $unique_prefix) { $this->breadcrumb_trail = $breadcrumb_trail; $this->unique_prefix = $unique_prefix; add_action('rest_api_init', array($this, 'register_routes')); } /** * A quick wrapper for register_rest_route to add our inclusion filter * * @param string $endpoint The endpoint name passed into the bcn_register_rest_endpoint filter * @param string $namespace The first URL segment after core prefix. Should be unique * @param string $route The base URL for route being added * @param array $args Optional. Either an array of options for the endpoint, or an array of arrays for * multiple methods. Default empty array. * @param bool $override Optional. If the route already exists, should we override it? * @return boolean True on success, false on error. */ protected function register_rest_route($endpoint, $namespace, $route, $args = array(), $override = false) { if(apply_filters('bcn_register_rest_endpoint', false, $endpoint, $this::version, $this->methods)) { return register_rest_route($namespace, $route, $args, $override); } return false; } public function register_routes() { $this->register_rest_route('post', $this->unique_prefix . '/v' . $this::version, '/post/(?P<id>[\d]+)', array( 'args' => array( 'id' => array( 'description' => __('The ID of the post (any type) to retrieve the breadcrumb trail for.', 'breadcrumb-navxt'), 'type' => 'integer', 'required' => true, 'validate_callback' => array($this, 'validate_id') ) ), 'methods' => $this->methods, 'callback' => array($this, 'display_rest_post'), 'permission_callback' => array($this, 'display_rest_post_permissions_check') ), false ); $this->register_rest_route('term', $this->unique_prefix . '/v' . $this::version, '/term/(?P<taxonomy>[\w-]+)/(?P<id>[\d]+)', array( 'args' => array( 'id' => array( 'description' => __('The ID of the term to retrieve the breadcrumb trail for.', 'breadcrumb-navxt'), 'type' => 'integer', 'required' => true, 'validate_callback' => array($this, 'validate_id') ), 'taxonomy' => array( 'description' => __('The taxonomy of the term to retrieve the breadcrumb trail for.', 'breadcrumb-navxt'), 'type' => 'string', 'required' => true, 'validate_callback' => array($this, 'validate_taxonomy') ) ), 'methods' => $this->methods, 'callback' => array($this, 'display_rest_term'), 'permission_callback' => '__return_true' ), false ); $this->register_rest_route('author', $this->unique_prefix . '/v' . $this::version, '/author/(?P<id>\d+)', array( 'args' => array( 'id' => array( 'description' => __('The ID of the author to retrieve the breadcrumb trail for.', 'breadcrumb-navxt'), 'type' => 'integer', 'required' => true, 'validate_callback' => array($this, 'validate_id') ) ), 'methods' => $this->methods, 'callback' => array($this, 'display_rest_author'), 'permission_callback' => '__return_true' ), false ); } /** * Checks to see if the request ID looks like it could be an ID (numeric and greater than 0) * * @param mixed $param The parameter to validate * @param WP_REST_Request $request REST API request data * @param string $key The paramter key * @return bool Whether or not the ID is valid (or atleast looks valid) */ public function validate_id($param, $request, $key) { return is_numeric($param) && absint($param) > 0; } /** * Checks to see if the request taxonomy is a valid taxonomy * * @param mixed $param The parameter to validate * @param WP_REST_Request $request REST API request data * @param string $key The paramter key * @return bool Whether or not the ID is valid (or atleast looks valid) */ public function validate_taxonomy($param, $request, $key) { return taxonomy_exists(esc_attr($param)); } /** * Check permissions for the post * * @param WP_REST_Request $request The request to check the permissions on * @return bool | WP_Error Whether or not the user can view the requested post */ public function display_rest_post_permissions_check(WP_REST_Request $request) { $post = get_post(absint($request->get_param('id'))); if($post === null) { return true; } return $this->check_post_read_permission($post); } /** * Check to ensure the current user can read the post (and subsequently view its breadcrumb trail) * * @param WP_Post $post The post to check if the current user can view the breadcrumb trail for * @return bool Whether or not the post should be readable */ public function check_post_read_permission($post) { if(!($post instanceof WP_Post)) { return false; } $post_type = get_post_type_object($post->post_type); if(empty($post_type) || empty($post_type->show_in_rest)) { return false; } if($post->post_status === 'publish' || current_user_can($post_type->cap->read_post, $post->ID)) { return true; } $post_status_obj = get_post_status_object($post->post_status); if($post_status_obj && $post_status_obj->public) { return true; } if($post->post_status === 'inherit' && $post->post_parent > 0) { $parent = get_post($post->post_parent); if($parent) { return $this->check_post_read_permission($parent); } } if($post->post_status === 'inherit') { return true; } return false; } /** * Breadcrumb trail handler for REST requests for post breadcrumb trails * * @param WP_REST_Request $request REST API request data * @return STD_Object Basic object data of the Schema.org Breadcrumb List compatible breadcrumb trail */ public function display_rest_post(WP_REST_Request $request) { $post = get_post(absint($request->get_param('id'))); if($post instanceof WP_Post) { $this->breadcrumb_trail->breadcrumbs = array(); //Generate the breadcrumb trail $this->breadcrumb_trail->fill_REST($post); return $this->breadcrumb_trail->display_json_ld(false); } } /** * Breadcrumb trail handler for REST requests for term breadcrumb trails * * @param WP_REST_Request $request REST API request data * @return STD_Object Basic object data of the Schema.org Breadcrumb List compatible breadcrumb trail */ public function display_rest_term(WP_REST_Request $request) { $term = get_term(absint($request->get_param('id')), esc_attr($request->get_param('taxonomy'))); if($term instanceof WP_Term) { $this->breadcrumb_trail->breadcrumbs = array(); //Generate the breadcrumb trail $this->breadcrumb_trail->fill_REST($term); return $this->breadcrumb_trail->display_json_ld(false); } } /** * Breadcrumb trail handler for REST requests for term breadcrumb trails * * @param WP_REST_Request $request REST API request data * @return STD_Object Basic object data of the Schema.org Breadcrumb List compatible breadcrumb trail */ public function display_rest_author(WP_REST_Request $request) { $user = get_user_by('ID', absint($request->get_param('id')), esc_attr($request->get_param('taxonomy'))); if($user instanceof WP_User) { $this->breadcrumb_trail->breadcrumbs = array(); //Generate the breadcrumb trail $this->breadcrumb_trail->fill_REST($user); return $this->breadcrumb_trail->display_json_ld(false); } } }
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