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Diffstat (limited to 'wp-includes/class-wp.php')
| -rw-r--r-- | wp-includes/class-wp.php | 832 |
1 files changed, 832 insertions, 0 deletions
diff --git a/wp-includes/class-wp.php b/wp-includes/class-wp.php new file mode 100644 index 0000000..ce88c10 --- /dev/null +++ b/wp-includes/class-wp.php @@ -0,0 +1,832 @@ +<?php +/** + * WordPress environment setup class. + * + * @package WordPress + * @since 2.0.0 + */ +#[AllowDynamicProperties] +class WP { + /** + * Public query variables. + * + * Long list of public query variables. + * + * @since 2.0.0 + * @var string[] + */ + public $public_query_vars = array( 'm', 'p', 'posts', 'w', 'cat', 'withcomments', 'withoutcomments', 's', 'search', 'exact', 'sentence', 'calendar', 'page', 'paged', 'more', 'tb', 'pb', 'author', 'order', 'orderby', 'year', 'monthnum', 'day', 'hour', 'minute', 'second', 'name', 'category_name', 'tag', 'feed', 'author_name', 'pagename', 'page_id', 'error', 'attachment', 'attachment_id', 'subpost', 'subpost_id', 'preview', 'robots', 'favicon', 'taxonomy', 'term', 'cpage', 'post_type', 'embed' ); + + /** + * Private query variables. + * + * Long list of private query variables. + * + * @since 2.0.0 + * @var string[] + */ + public $private_query_vars = array( 'offset', 'posts_per_page', 'posts_per_archive_page', 'showposts', 'nopaging', 'post_type', 'post_status', 'category__in', 'category__not_in', 'category__and', 'tag__in', 'tag__not_in', 'tag__and', 'tag_slug__in', 'tag_slug__and', 'tag_id', 'post_mime_type', 'perm', 'comments_per_page', 'post__in', 'post__not_in', 'post_parent', 'post_parent__in', 'post_parent__not_in', 'title', 'fields' ); + + /** + * Extra query variables set by the user. + * + * @since 2.1.0 + * @var array + */ + public $extra_query_vars = array(); + + /** + * Query variables for setting up the WordPress Query Loop. + * + * @since 2.0.0 + * @var array + */ + public $query_vars = array(); + + /** + * String parsed to set the query variables. + * + * @since 2.0.0 + * @var string + */ + public $query_string = ''; + + /** + * The request path, e.g. 2015/05/06. + * + * @since 2.0.0 + * @var string + */ + public $request = ''; + + /** + * Rewrite rule the request matched. + * + * @since 2.0.0 + * @var string + */ + public $matched_rule = ''; + + /** + * Rewrite query the request matched. + * + * @since 2.0.0 + * @var string + */ + public $matched_query = ''; + + /** + * Whether already did the permalink. + * + * @since 2.0.0 + * @var bool + */ + public $did_permalink = false; + + /** + * Adds a query variable to the list of public query variables. + * + * @since 2.1.0 + * + * @param string $qv Query variable name. + */ + public function add_query_var( $qv ) { + if ( ! in_array( $qv, $this->public_query_vars, true ) ) { + $this->public_query_vars[] = $qv; + } + } + + /** + * Removes a query variable from a list of public query variables. + * + * @since 4.5.0 + * + * @param string $name Query variable name. + */ + public function remove_query_var( $name ) { + $this->public_query_vars = array_diff( $this->public_query_vars, array( $name ) ); + } + + /** + * Sets the value of a query variable. + * + * @since 2.3.0 + * + * @param string $key Query variable name. + * @param mixed $value Query variable value. + */ + public function set_query_var( $key, $value ) { + $this->query_vars[ $key ] = $value; + } + + /** + * Parses the request to find the correct WordPress query. + * + * Sets up the query variables based on the request. There are also many + * filters and actions that can be used to further manipulate the result. + * + * @since 2.0.0 + * @since 6.0.0 A return value was added. + * + * @global WP_Rewrite $wp_rewrite WordPress rewrite component. + * + * @param array|string $extra_query_vars Set the extra query variables. + * @return bool Whether the request was parsed. + */ + public function parse_request( $extra_query_vars = '' ) { + global $wp_rewrite; + + /** + * Filters whether to parse the request. + * + * @since 3.5.0 + * + * @param bool $bool Whether or not to parse the request. Default true. + * @param WP $wp Current WordPress environment instance. + * @param array|string $extra_query_vars Extra passed query variables. + */ + if ( ! apply_filters( 'do_parse_request', true, $this, $extra_query_vars ) ) { + return false; + } + + $this->query_vars = array(); + $post_type_query_vars = array(); + + if ( is_array( $extra_query_vars ) ) { + $this->extra_query_vars = & $extra_query_vars; + } elseif ( ! empty( $extra_query_vars ) ) { + parse_str( $extra_query_vars, $this->extra_query_vars ); + } + // Process PATH_INFO, REQUEST_URI, and 404 for permalinks. + + // Fetch the rewrite rules. + $rewrite = $wp_rewrite->wp_rewrite_rules(); + + if ( ! empty( $rewrite ) ) { + // If we match a rewrite rule, this will be cleared. + $error = '404'; + $this->did_permalink = true; + + $pathinfo = isset( $_SERVER['PATH_INFO'] ) ? $_SERVER['PATH_INFO'] : ''; + list( $pathinfo ) = explode( '?', $pathinfo ); + $pathinfo = str_replace( '%', '%25', $pathinfo ); + + list( $req_uri ) = explode( '?', $_SERVER['REQUEST_URI'] ); + $self = $_SERVER['PHP_SELF']; + + $home_path = parse_url( home_url(), PHP_URL_PATH ); + $home_path_regex = ''; + if ( is_string( $home_path ) && '' !== $home_path ) { + $home_path = trim( $home_path, '/' ); + $home_path_regex = sprintf( '|^%s|i', preg_quote( $home_path, '|' ) ); + } + + /* + * Trim path info from the end and the leading home path from the front. + * For path info requests, this leaves us with the requesting filename, if any. + * For 404 requests, this leaves us with the requested permalink. + */ + $req_uri = str_replace( $pathinfo, '', $req_uri ); + $req_uri = trim( $req_uri, '/' ); + $pathinfo = trim( $pathinfo, '/' ); + $self = trim( $self, '/' ); + + if ( ! empty( $home_path_regex ) ) { + $req_uri = preg_replace( $home_path_regex, '', $req_uri ); + $req_uri = trim( $req_uri, '/' ); + $pathinfo = preg_replace( $home_path_regex, '', $pathinfo ); + $pathinfo = trim( $pathinfo, '/' ); + $self = preg_replace( $home_path_regex, '', $self ); + $self = trim( $self, '/' ); + } + + // The requested permalink is in $pathinfo for path info requests and $req_uri for other requests. + if ( ! empty( $pathinfo ) && ! preg_match( '|^.*' . $wp_rewrite->index . '$|', $pathinfo ) ) { + $requested_path = $pathinfo; + } else { + // If the request uri is the index, blank it out so that we don't try to match it against a rule. + if ( $req_uri === $wp_rewrite->index ) { + $req_uri = ''; + } + + $requested_path = $req_uri; + } + + $requested_file = $req_uri; + + $this->request = $requested_path; + + // Look for matches. + $request_match = $requested_path; + if ( empty( $request_match ) ) { + // An empty request could only match against ^$ regex. + if ( isset( $rewrite['$'] ) ) { + $this->matched_rule = '$'; + $query = $rewrite['$']; + $matches = array( '' ); + } + } else { + foreach ( (array) $rewrite as $match => $query ) { + // If the requested file is the anchor of the match, prepend it to the path info. + if ( ! empty( $requested_file ) + && str_starts_with( $match, $requested_file ) + && $requested_file !== $requested_path + ) { + $request_match = $requested_file . '/' . $requested_path; + } + + if ( preg_match( "#^$match#", $request_match, $matches ) + || preg_match( "#^$match#", urldecode( $request_match ), $matches ) + ) { + + if ( $wp_rewrite->use_verbose_page_rules + && preg_match( '/pagename=\$matches\[([0-9]+)\]/', $query, $varmatch ) + ) { + // This is a verbose page match, let's check to be sure about it. + $page = get_page_by_path( $matches[ $varmatch[1] ] ); + + if ( ! $page ) { + continue; + } + + $post_status_obj = get_post_status_object( $page->post_status ); + + if ( ! $post_status_obj->public && ! $post_status_obj->protected + && ! $post_status_obj->private && $post_status_obj->exclude_from_search + ) { + continue; + } + } + + // Got a match. + $this->matched_rule = $match; + break; + } + } + } + + if ( ! empty( $this->matched_rule ) ) { + // Trim the query of everything up to the '?'. + $query = preg_replace( '!^.+\?!', '', $query ); + + // Substitute the substring matches into the query. + $query = addslashes( WP_MatchesMapRegex::apply( $query, $matches ) ); + + $this->matched_query = $query; + + // Parse the query. + parse_str( $query, $perma_query_vars ); + + // If we're processing a 404 request, clear the error var since we found something. + if ( '404' === $error ) { + unset( $error, $_GET['error'] ); + } + } + + // If req_uri is empty or if it is a request for ourself, unset error. + if ( empty( $requested_path ) || $requested_file === $self + || str_contains( $_SERVER['PHP_SELF'], 'wp-admin/' ) + ) { + unset( $error, $_GET['error'] ); + + if ( isset( $perma_query_vars ) && str_contains( $_SERVER['PHP_SELF'], 'wp-admin/' ) ) { + unset( $perma_query_vars ); + } + + $this->did_permalink = false; + } + } + + /** + * Filters the query variables allowed before processing. + * + * Allows (publicly allowed) query vars to be added, removed, or changed prior + * to executing the query. Needed to allow custom rewrite rules using your own arguments + * to work, or any other custom query variables you want to be publicly available. + * + * @since 1.5.0 + * + * @param string[] $public_query_vars The array of allowed query variable names. + */ + $this->public_query_vars = apply_filters( 'query_vars', $this->public_query_vars ); + + foreach ( get_post_types( array(), 'objects' ) as $post_type => $t ) { + if ( is_post_type_viewable( $t ) && $t->query_var ) { + $post_type_query_vars[ $t->query_var ] = $post_type; + } + } + + foreach ( $this->public_query_vars as $wpvar ) { + if ( isset( $this->extra_query_vars[ $wpvar ] ) ) { + $this->query_vars[ $wpvar ] = $this->extra_query_vars[ $wpvar ]; + } elseif ( isset( $_GET[ $wpvar ] ) && isset( $_POST[ $wpvar ] ) + && $_GET[ $wpvar ] !== $_POST[ $wpvar ] + ) { + wp_die( + __( 'A variable mismatch has been detected.' ), + __( 'Sorry, you are not allowed to view this item.' ), + 400 + ); + } elseif ( isset( $_POST[ $wpvar ] ) ) { + $this->query_vars[ $wpvar ] = $_POST[ $wpvar ]; + } elseif ( isset( $_GET[ $wpvar ] ) ) { + $this->query_vars[ $wpvar ] = $_GET[ $wpvar ]; + } elseif ( isset( $perma_query_vars[ $wpvar ] ) ) { + $this->query_vars[ $wpvar ] = $perma_query_vars[ $wpvar ]; + } + + if ( ! empty( $this->query_vars[ $wpvar ] ) ) { + if ( ! is_array( $this->query_vars[ $wpvar ] ) ) { + $this->query_vars[ $wpvar ] = (string) $this->query_vars[ $wpvar ]; + } else { + foreach ( $this->query_vars[ $wpvar ] as $vkey => $v ) { + if ( is_scalar( $v ) ) { + $this->query_vars[ $wpvar ][ $vkey ] = (string) $v; + } + } + } + + if ( isset( $post_type_query_vars[ $wpvar ] ) ) { + $this->query_vars['post_type'] = $post_type_query_vars[ $wpvar ]; + $this->query_vars['name'] = $this->query_vars[ $wpvar ]; + } + } + } + + // Convert urldecoded spaces back into '+'. + foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy => $t ) { + if ( $t->query_var && isset( $this->query_vars[ $t->query_var ] ) ) { + $this->query_vars[ $t->query_var ] = str_replace( ' ', '+', $this->query_vars[ $t->query_var ] ); + } + } + + // Don't allow non-publicly queryable taxonomies to be queried from the front end. + if ( ! is_admin() ) { + foreach ( get_taxonomies( array( 'publicly_queryable' => false ), 'objects' ) as $taxonomy => $t ) { + /* + * Disallow when set to the 'taxonomy' query var. + * Non-publicly queryable taxonomies cannot register custom query vars. See register_taxonomy(). + */ + if ( isset( $this->query_vars['taxonomy'] ) && $taxonomy === $this->query_vars['taxonomy'] ) { + unset( $this->query_vars['taxonomy'], $this->query_vars['term'] ); + } + } + } + + // Limit publicly queried post_types to those that are 'publicly_queryable'. + if ( isset( $this->query_vars['post_type'] ) ) { + $queryable_post_types = get_post_types( array( 'publicly_queryable' => true ) ); + + if ( ! is_array( $this->query_vars['post_type'] ) ) { + if ( ! in_array( $this->query_vars['post_type'], $queryable_post_types, true ) ) { + unset( $this->query_vars['post_type'] ); + } + } else { + $this->query_vars['post_type'] = array_intersect( $this->query_vars['post_type'], $queryable_post_types ); + } + } + + // Resolve conflicts between posts with numeric slugs and date archive queries. + $this->query_vars = wp_resolve_numeric_slug_conflicts( $this->query_vars ); + + foreach ( (array) $this->private_query_vars as $var ) { + if ( isset( $this->extra_query_vars[ $var ] ) ) { + $this->query_vars[ $var ] = $this->extra_query_vars[ $var ]; + } + } + + if ( isset( $error ) ) { + $this->query_vars['error'] = $error; + } + + /** + * Filters the array of parsed query variables. + * + * @since 2.1.0 + * + * @param array $query_vars The array of requested query variables. + */ + $this->query_vars = apply_filters( 'request', $this->query_vars ); + + /** + * Fires once all query variables for the current request have been parsed. + * + * @since 2.1.0 + * + * @param WP $wp Current WordPress environment instance (passed by reference). + */ + do_action_ref_array( 'parse_request', array( &$this ) ); + + return true; + } + + /** + * Sends additional HTTP headers for caching, content type, etc. + * + * Sets the Content-Type header. Sets the 'error' status (if passed) and optionally exits. + * If showing a feed, it will also send Last-Modified, ETag, and 304 status if needed. + * + * @since 2.0.0 + * @since 4.4.0 `X-Pingback` header is added conditionally for single posts that allow pings. + * @since 6.1.0 Runs after posts have been queried. + * + * @global WP_Query $wp_query WordPress Query object. + */ + public function send_headers() { + global $wp_query; + + $headers = array(); + $status = null; + $exit_required = false; + $date_format = 'D, d M Y H:i:s'; + + if ( is_user_logged_in() ) { + $headers = array_merge( $headers, wp_get_nocache_headers() ); + } elseif ( ! empty( $_GET['unapproved'] ) && ! empty( $_GET['moderation-hash'] ) ) { + // Unmoderated comments are only visible for 10 minutes via the moderation hash. + $expires = 10 * MINUTE_IN_SECONDS; + + $headers['Expires'] = gmdate( $date_format, time() + $expires ); + $headers['Cache-Control'] = sprintf( + 'max-age=%d, must-revalidate', + $expires + ); + } + if ( ! empty( $this->query_vars['error'] ) ) { + $status = (int) $this->query_vars['error']; + + if ( 404 === $status ) { + if ( ! is_user_logged_in() ) { + $headers = array_merge( $headers, wp_get_nocache_headers() ); + } + + $headers['Content-Type'] = get_option( 'html_type' ) . '; charset=' . get_option( 'blog_charset' ); + } elseif ( in_array( $status, array( 403, 500, 502, 503 ), true ) ) { + $exit_required = true; + } + } elseif ( empty( $this->query_vars['feed'] ) ) { + $headers['Content-Type'] = get_option( 'html_type' ) . '; charset=' . get_option( 'blog_charset' ); + } else { + // Set the correct content type for feeds. + $type = $this->query_vars['feed']; + if ( 'feed' === $this->query_vars['feed'] ) { + $type = get_default_feed(); + } + + $headers['Content-Type'] = feed_content_type( $type ) . '; charset=' . get_option( 'blog_charset' ); + + // We're showing a feed, so WP is indeed the only thing that last changed. + if ( ! empty( $this->query_vars['withcomments'] ) + || str_contains( $this->query_vars['feed'], 'comments-' ) + || ( empty( $this->query_vars['withoutcomments'] ) + && ( ! empty( $this->query_vars['p'] ) + || ! empty( $this->query_vars['name'] ) + || ! empty( $this->query_vars['page_id'] ) + || ! empty( $this->query_vars['pagename'] ) + || ! empty( $this->query_vars['attachment'] ) + || ! empty( $this->query_vars['attachment_id'] ) + ) + ) + ) { + $wp_last_modified_post = mysql2date( $date_format, get_lastpostmodified( 'GMT' ), false ); + $wp_last_modified_comment = mysql2date( $date_format, get_lastcommentmodified( 'GMT' ), false ); + + if ( strtotime( $wp_last_modified_post ) > strtotime( $wp_last_modified_comment ) ) { + $wp_last_modified = $wp_last_modified_post; + } else { + $wp_last_modified = $wp_last_modified_comment; + } + } else { + $wp_last_modified = mysql2date( $date_format, get_lastpostmodified( 'GMT' ), false ); + } + + if ( ! $wp_last_modified ) { + $wp_last_modified = gmdate( $date_format ); + } + + $wp_last_modified .= ' GMT'; + $wp_etag = '"' . md5( $wp_last_modified ) . '"'; + + $headers['Last-Modified'] = $wp_last_modified; + $headers['ETag'] = $wp_etag; + + // Support for conditional GET. + if ( isset( $_SERVER['HTTP_IF_NONE_MATCH'] ) ) { + $client_etag = wp_unslash( $_SERVER['HTTP_IF_NONE_MATCH'] ); + } else { + $client_etag = ''; + } + + if ( isset( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) { + $client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ); + } else { + $client_last_modified = ''; + } + + // If string is empty, return 0. If not, attempt to parse into a timestamp. + $client_modified_timestamp = $client_last_modified ? strtotime( $client_last_modified ) : 0; + + // Make a timestamp for our most recent modification. + $wp_modified_timestamp = strtotime( $wp_last_modified ); + + if ( ( $client_last_modified && $client_etag ) + ? ( ( $client_modified_timestamp >= $wp_modified_timestamp ) && ( $client_etag === $wp_etag ) ) + : ( ( $client_modified_timestamp >= $wp_modified_timestamp ) || ( $client_etag === $wp_etag ) ) + ) { + $status = 304; + $exit_required = true; + } + } + + if ( is_singular() ) { + $post = isset( $wp_query->post ) ? $wp_query->post : null; + + // Only set X-Pingback for single posts that allow pings. + if ( $post && pings_open( $post ) ) { + $headers['X-Pingback'] = get_bloginfo( 'pingback_url', 'display' ); + } + } + + /** + * Filters the HTTP headers before they're sent to the browser. + * + * @since 2.8.0 + * + * @param string[] $headers Associative array of headers to be sent. + * @param WP $wp Current WordPress environment instance. + */ + $headers = apply_filters( 'wp_headers', $headers, $this ); + + if ( ! empty( $status ) ) { + status_header( $status ); + } + + // If Last-Modified is set to false, it should not be sent (no-cache situation). + if ( isset( $headers['Last-Modified'] ) && false === $headers['Last-Modified'] ) { + unset( $headers['Last-Modified'] ); + + if ( ! headers_sent() ) { + header_remove( 'Last-Modified' ); + } + } + + if ( ! headers_sent() ) { + foreach ( (array) $headers as $name => $field_value ) { + header( "{$name}: {$field_value}" ); + } + } + + if ( $exit_required ) { + exit; + } + + /** + * Fires once the requested HTTP headers for caching, content type, etc. have been sent. + * + * @since 2.1.0 + * + * @param WP $wp Current WordPress environment instance (passed by reference). + */ + do_action_ref_array( 'send_headers', array( &$this ) ); + } + + /** + * Sets the query string property based off of the query variable property. + * + * The {@see 'query_string'} filter is deprecated, but still works. Plugins should + * use the {@see 'request'} filter instead. + * + * @since 2.0.0 + */ + public function build_query_string() { + $this->query_string = ''; + + foreach ( (array) array_keys( $this->query_vars ) as $wpvar ) { + if ( '' !== $this->query_vars[ $wpvar ] ) { + $this->query_string .= ( strlen( $this->query_string ) < 1 ) ? '' : '&'; + + if ( ! is_scalar( $this->query_vars[ $wpvar ] ) ) { // Discard non-scalars. + continue; + } + + $this->query_string .= $wpvar . '=' . rawurlencode( $this->query_vars[ $wpvar ] ); + } + } + + if ( has_filter( 'query_string' ) ) { // Don't bother filtering and parsing if no plugins are hooked in. + /** + * Filters the query string before parsing. + * + * @since 1.5.0 + * @deprecated 2.1.0 Use {@see 'query_vars'} or {@see 'request'} filters instead. + * + * @param string $query_string The query string to modify. + */ + $this->query_string = apply_filters_deprecated( + 'query_string', + array( $this->query_string ), + '2.1.0', + 'query_vars, request' + ); + + parse_str( $this->query_string, $this->query_vars ); + } + } + + /** + * Set up the WordPress Globals. + * + * The query_vars property will be extracted to the GLOBALS. So care should + * be taken when naming global variables that might interfere with the + * WordPress environment. + * + * @since 2.0.0 + * + * @global WP_Query $wp_query WordPress Query object. + * @global string $query_string Query string for the loop. + * @global array $posts The found posts. + * @global WP_Post|null $post The current post, if available. + * @global string $request The SQL statement for the request. + * @global int $more Only set, if single page or post. + * @global int $single If single page or post. Only set, if single page or post. + * @global WP_User $authordata Only set, if author archive. + */ + public function register_globals() { + global $wp_query; + + // Extract updated query vars back into global namespace. + foreach ( (array) $wp_query->query_vars as $key => $value ) { + $GLOBALS[ $key ] = $value; + } + + $GLOBALS['query_string'] = $this->query_string; + $GLOBALS['posts'] = & $wp_query->posts; + $GLOBALS['post'] = isset( $wp_query->post ) ? $wp_query->post : null; + $GLOBALS['request'] = $wp_query->request; + + if ( $wp_query->is_single() || $wp_query->is_page() ) { + $GLOBALS['more'] = 1; + $GLOBALS['single'] = 1; + } + + if ( $wp_query->is_author() ) { + $GLOBALS['authordata'] = get_userdata( get_queried_object_id() ); + } + } + + /** + * Set up the current user. + * + * @since 2.0.0 + */ + public function init() { + wp_get_current_user(); + } + + /** + * Set up the Loop based on the query variables. + * + * @since 2.0.0 + * + * @global WP_Query $wp_the_query WordPress Query object. + */ + public function query_posts() { + global $wp_the_query; + $this->build_query_string(); + $wp_the_query->query( $this->query_vars ); + } + + /** + * Set the Headers for 404, if nothing is found for requested URL. + * + * Issue a 404 if a request doesn't match any posts and doesn't match any object + * (e.g. an existing-but-empty category, tag, author) and a 404 was not already issued, + * and if the request was not a search or the homepage. + * + * Otherwise, issue a 200. + * + * This sets headers after posts have been queried. handle_404() really means "handle status". + * By inspecting the result of querying posts, seemingly successful requests can be switched to + * a 404 so that canonical redirection logic can kick in. + * + * @since 2.0.0 + * + * @global WP_Query $wp_query WordPress Query object. + */ + public function handle_404() { + global $wp_query; + + /** + * Filters whether to short-circuit default header status handling. + * + * Returning a non-false value from the filter will short-circuit the handling + * and return early. + * + * @since 4.5.0 + * + * @param bool $preempt Whether to short-circuit default header status handling. Default false. + * @param WP_Query $wp_query WordPress Query object. + */ + if ( false !== apply_filters( 'pre_handle_404', false, $wp_query ) ) { + return; + } + + // If we've already issued a 404, bail. + if ( is_404() ) { + return; + } + + $set_404 = true; + + // Never 404 for the admin, robots, or favicon. + if ( is_admin() || is_robots() || is_favicon() ) { + $set_404 = false; + + // If posts were found, check for paged content. + } elseif ( $wp_query->posts ) { + $content_found = true; + + if ( is_singular() ) { + $post = isset( $wp_query->post ) ? $wp_query->post : null; + $next = '<!--nextpage-->'; + + // Check for paged content that exceeds the max number of pages. + if ( $post && ! empty( $this->query_vars['page'] ) ) { + // Check if content is actually intended to be paged. + if ( str_contains( $post->post_content, $next ) ) { + $page = trim( $this->query_vars['page'], '/' ); + $content_found = (int) $page <= ( substr_count( $post->post_content, $next ) + 1 ); + } else { + $content_found = false; + } + } + } + + // The posts page does not support the <!--nextpage--> pagination. + if ( $wp_query->is_posts_page && ! empty( $this->query_vars['page'] ) ) { + $content_found = false; + } + + if ( $content_found ) { + $set_404 = false; + } + + // We will 404 for paged queries, as no posts were found. + } elseif ( ! is_paged() ) { + $author = get_query_var( 'author' ); + + // Don't 404 for authors without posts as long as they matched an author on this site. + if ( is_author() && is_numeric( $author ) && $author > 0 && is_user_member_of_blog( $author ) + // Don't 404 for these queries if they matched an object. + || ( is_tag() || is_category() || is_tax() || is_post_type_archive() ) && get_queried_object() + // Don't 404 for these queries either. + || is_home() || is_search() || is_feed() + ) { + $set_404 = false; + } + } + + if ( $set_404 ) { + // Guess it's time to 404. + $wp_query->set_404(); + status_header( 404 ); + nocache_headers(); + } else { + status_header( 200 ); + } + } + + /** + * Sets up all of the variables required by the WordPress environment. + * + * The action {@see 'wp'} has one parameter that references the WP object. It + * allows for accessing the properties and methods to further manipulate the + * object. + * + * @since 2.0.0 + * + * @param string|array $query_args Passed to parse_request(). + */ + public function main( $query_args = '' ) { + $this->init(); + + $parsed = $this->parse_request( $query_args ); + + if ( $parsed ) { + $this->query_posts(); + $this->handle_404(); + $this->register_globals(); + } + + $this->send_headers(); + + /** + * Fires once the WordPress environment has been set up. + * + * @since 2.1.0 + * + * @param WP $wp Current WordPress environment instance (passed by reference). + */ + do_action_ref_array( 'wp', array( &$this ) ); + } +} |