eck against. Default empty.
* @return bool Whether the query is for an existing category archive page.
*/
function is_category( $category = '' ) {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_category( $category );
}
/**
* Determines whether the query is for an existing tag archive page.
*
* If the $tag parameter is specified, this function will additionally
* check if the query is for one of the tags specified.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 2.3.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @param int|string|int[]|string[] $tag Optional. Tag ID, name, slug, or array of such
* to check against. Default empty.
* @return bool Whether the query is for an existing tag archive page.
*/
function is_tag( $tag = '' ) {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_tag( $tag );
}
/**
* Determines whether the query is for an existing custom taxonomy archive page.
*
* If the $taxonomy parameter is specified, this function will additionally
* check if the query is for that specific $taxonomy.
*
* If the $term parameter is specified in addition to the $taxonomy parameter,
* this function will additionally check if the query is for one of the terms
* specified.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 2.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @param string|string[] $taxonomy Optional. Taxonomy slug or slugs to check against.
* Default empty.
* @param int|string|int[]|string[] $term Optional. Term ID, name, slug, or array of such
* to check against. Default empty.
* @return bool Whether the query is for an existing custom taxonomy archive page.
* True for custom taxonomy archive pages, false for built-in taxonomies
* (category and tag archives).
*/
function is_tax( $taxonomy = '', $term = '' ) {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_tax( $taxonomy, $term );
}
/**
* Determines whether the query is for an existing date archive.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for an existing date archive.
*/
function is_date() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_date();
}
/**
* Determines whether the query is for an existing day archive.
*
* A conditional check to test whether the page is a date-based archive page displaying posts for the current day.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for an existing day archive.
*/
function is_day() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_day();
}
/**
* Determines whether the query is for a feed.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @param string|string[] $feeds Optional. Feed type or array of feed types
* to check against. Default empty.
* @return bool Whether the query is for a feed.
*/
function is_feed( $feeds = '' ) {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_feed( $feeds );
}
/**
* Is the query for a comments feed?
*
* @since 3.0.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for a comments feed.
*/
function is_comment_feed() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_comment_feed();
}
/**
* Determines whether the query is for the front page of the site.
*
* This is for what is displayed at your site's main URL.
*
* Depends on the site's "Front page displays" Reading Settings 'show_on_front' and 'page_on_front'.
*
* If you set a static page for the front page of your site, this function will return
* true when viewing that page.
*
* Otherwise the same as @see is_home()
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 2.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for the front page of the site.
*/
function is_front_page() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_front_page();
}
/**
* Determines whether the query is for the blog homepage.
*
* The blog homepage is the page that shows the time-based blog content of the site.
*
* is_home() is dependent on the site's "Front page displays" Reading Settings 'show_on_front'
* and 'page_for_posts'.
*
* If a static page is set for the front page of the site, this function will return true only
* on the page you set as the "Posts page".
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @see is_front_page()
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for the blog homepage.
*/
function is_home() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_home();
}
/**
* Determines whether the query is for the Privacy Policy page.
*
* The Privacy Policy page is the page that shows the Privacy Policy content of the site.
*
* is_privacy_policy() is dependent on the site's "Change your Privacy Policy page" Privacy Settings 'wp_page_for_privacy_policy'.
*
* This function will return true only on the page you set as the "Privacy Policy page".
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 5.2.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for the Privacy Policy page.
*/
function is_privacy_policy() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_privacy_policy();
}
/**
* Determines whether the query is for an existing month archive.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for an existing month archive.
*/
function is_month() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_month();
}
/**
* Determines whether the query is for an existing single page.
*
* If the $page parameter is specified, this function will additionally
* check if the query is for one of the pages specified.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @see is_single()
* @see is_singular()
* @global WP_Query $wp_query WordPress Query object.
*
* @param int|string|int[]|string[] $page Optional. Page ID, title, slug, or array of such
* to check against. Default empty.
* @return bool Whether the query is for an existing single page.
*/
function is_page( $page = '' ) {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_page( $page );
}
/**
* Determines whether the query is for a paged result and not for the first page.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for a paged result.
*/
function is_paged() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_paged();
}
/**
* Determines whether the query is for a post or page preview.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 2.0.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for a post or page preview.
*/
function is_preview() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_preview();
}
/**
* Is the query for the robots.txt file?
*
* @since 2.1.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for the robots.txt file.
*/
function is_robots() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_robots();
}
/**
* Is the query for the favicon.ico file?
*
* @since 5.4.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for the favicon.ico file.
*/
function is_favicon() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_favicon();
}
/**
* Determines whether the query is for a search.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for a search.
*/
function is_search() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_search();
}
/**
* Determines whether the query is for an existing single post.
*
* Works for any post type, except attachments and pages
*
* If the $post parameter is specified, this function will additionally
* check if the query is for one of the Posts specified.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @see is_page()
* @see is_singular()
* @global WP_Query $wp_query WordPress Query object.
*
* @param int|string|int[]|string[] $post Optional. Post ID, title, slug, or array of such
* to check against. Default empty.
* @return bool Whether the query is for an existing single post.
*/
function is_single( $post = '' ) {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_single( $post );
}
/**
* Determines whether the query is for an existing single post of any post type
* (post, attachment, page, custom post types).
*
* If the $post_types parameter is specified, this function will additionally
* check if the query is for one of the Posts Types specified.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @see is_page()
* @see is_single()
* @global WP_Query $wp_query WordPress Query object.
*
* @param string|string[] $post_types Optional. Post type or array of post types
* to check against. Default empty.
* @return bool Whether the query is for an existing single post
* or any of the given post types.
*/
function is_singular( $post_types = '' ) {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_singular( $post_types );
}
/**
* Determines whether the query is for a specific time.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for a specific time.
*/
function is_time() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_time();
}
/**
* Determines whether the query is for a trackback endpoint call.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for a trackback endpoint call.
*/
function is_trackback() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_trackback();
}
/**
* Determines whether the query is for an existing year archive.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for an existing year archive.
*/
function is_year() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_year();
}
/**
* Determines whether the query has resulted in a 404 (returns no results).
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is a 404 error.
*/
function is_404() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_404();
}
/**
* Is the query for an embedded post?
*
* @since 4.4.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is for an embedded post.
*/
function is_embed() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_embed();
}
/**
* Determines whether the query is the main query.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 3.3.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool Whether the query is the main query.
*/
function is_main_query() {
global $wp_query;
if ( 'pre_get_posts' === current_filter() ) {
_doing_it_wrong(
__FUNCTION__,
sprintf(
/* translators: 1: pre_get_posts, 2: WP_Query->is_main_query(), 3: is_main_query(), 4: Documentation URL. */
__( 'In %1$s, use the %2$s method, not the %3$s function. See %4$s.' ),
'pre_get_posts
',
'WP_Query->is_main_query()
',
'is_main_query()
',
__( 'https://developer.wordpress.org/reference/functions/is_main_query/' )
),
'3.7.0'
);
}
return $wp_query->is_main_query();
}
/*
* The Loop. Post loop control.
*/
/**
* Determines whether current WordPress query has posts to loop over.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool True if posts are available, false if end of the loop.
*/
function have_posts() {
global $wp_query;
return $wp_query->have_posts();
}
/**
* Determines whether the caller is in the Loop.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 2.0.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool True if caller is within loop, false if loop hasn't started or ended.
*/
function in_the_loop() {
global $wp_query;
return $wp_query->in_the_loop;
}
/**
* Rewind the loop posts.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*/
function rewind_posts() {
global $wp_query;
$wp_query->rewind_posts();
}
/**
* Iterate the post index in the loop.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
*/
function the_post() {
global $wp_query;
$wp_query->the_post();
}
/*
* Comments loop.
*/
/**
* Determines whether current WordPress query has comments to loop over.
*
* @since 2.2.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return bool True if comments are available, false if no more comments.
*/
function have_comments() {
global $wp_query;
return $wp_query->have_comments();
}
/**
* Iterate comment index in the comment loop.
*
* @since 2.2.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @return null
*/
function the_comment() {
global $wp_query;
return $wp_query->the_comment();
}
/**
* Redirect old slugs to the correct permalink.
*
* Attempts to find the current slug from the past slugs.
*
* @since 2.1.0
*/
function wp_old_slug_redirect() {
if ( is_404() && '' !== get_query_var( 'name' ) ) {
// Guess the current post type based on the query vars.
if ( get_query_var( 'post_type' ) ) {
$post_type = get_query_var( 'post_type' );
} elseif ( get_query_var( 'attachment' ) ) {
$post_type = 'attachment';
} elseif ( get_query_var( 'pagename' ) ) {
$post_type = 'page';
} else {
$post_type = 'post';
}
if ( is_array( $post_type ) ) {
if ( count( $post_type ) > 1 ) {
return;
}
$post_type = reset( $post_type );
}
// Do not attempt redirect for hierarchical post types.
if ( is_post_type_hierarchical( $post_type ) ) {
return;
}
$id = _find_post_by_old_slug( $post_type );
if ( ! $id ) {
$id = _find_post_by_old_date( $post_type );
}
/**
* Filters the old slug redirect post ID.
*
* @since 4.9.3
*
* @param int $id The redirect post ID.
*/
$id = apply_filters( 'old_slug_redirect_post_id', $id );
if ( ! $id ) {
return;
}
$link = get_permalink( $id );
if ( get_query_var( 'paged' ) > 1 ) {
$link = user_trailingslashit( trailingslashit( $link ) . 'page/' . get_query_var( 'paged' ) );
} elseif ( is_embed() ) {
$link = user_trailingslashit( trailingslashit( $link ) . 'embed' );
}
/**
* Filters the old slug redirect URL.
*
* @since 4.4.0
*
* @param string $link The redirect URL.
*/
$link = apply_filters( 'old_slug_redirect_url', $link );
if ( ! $link ) {
return;
}
wp_redirect( $link, 301 ); // Permanent redirect.
exit;
}
}
/**
* Find the post ID for redirecting an old slug.
*
* @since 4.9.3
* @access private
*
* @see wp_old_slug_redirect()
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $post_type The current post type based on the query vars.
* @return int The Post ID.
*/
function _find_post_by_old_slug( $post_type ) {
global $wpdb;
$query = $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta, $wpdb->posts WHERE ID = post_id AND post_type = %s AND meta_key = '_wp_old_slug' AND meta_value = %s", $post_type, get_query_var( 'name' ) );
// If year, monthnum, or day have been specified, make our query more precise
// just in case there are multiple identical _wp_old_slug values.
if ( get_query_var( 'year' ) ) {
$query .= $wpdb->prepare( ' AND YEAR(post_date) = %d', get_query_var( 'year' ) );
}
if ( get_query_var( 'monthnum' ) ) {
$query .= $wpdb->prepare( ' AND MONTH(post_date) = %d', get_query_var( 'monthnum' ) );
}
if ( get_query_var( 'day' ) ) {
$query .= $wpdb->prepare( ' AND DAYOFMONTH(post_date) = %d', get_query_var( 'day' ) );
}
$id = (int) $wpdb->get_var( $query );
return $id;
}
/**
* Find the post ID for redirecting an old date.
*
* @since 4.9.3
* @access private
*
* @see wp_old_slug_redirect()
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $post_type The current post type based on the query vars.
* @return int The Post ID.
*/
function _find_post_by_old_date( $post_type ) {
global $wpdb;
$date_query = '';
if ( get_query_var( 'year' ) ) {
$date_query .= $wpdb->prepare( ' AND YEAR(pm_date.meta_value) = %d', get_query_var( 'year' ) );
}
if ( get_query_var( 'monthnum' ) ) {
$date_query .= $wpdb->prepare( ' AND MONTH(pm_date.meta_value) = %d', get_query_var( 'monthnum' ) );
}
if ( get_query_var( 'day' ) ) {
$date_query .= $wpdb->prepare( ' AND DAYOFMONTH(pm_date.meta_value) = %d', get_query_var( 'day' ) );
}
$id = 0;
if ( $date_query ) {
$id = (int) $wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta AS pm_date, $wpdb->posts WHERE ID = post_id AND post_type = %s AND meta_key = '_wp_old_date' AND post_name = %s" . $date_query, $post_type, get_query_var( 'name' ) ) );
if ( ! $id ) {
// Check to see if an old slug matches the old date.
$id = (int) $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts, $wpdb->postmeta AS pm_slug, $wpdb->postmeta AS pm_date WHERE ID = pm_slug.post_id AND ID = pm_date.post_id AND post_type = %s AND pm_slug.meta_key = '_wp_old_slug' AND pm_slug.meta_value = %s AND pm_date.meta_key = '_wp_old_date'" . $date_query, $post_type, get_query_var( 'name' ) ) );
}
}
return $id;
}
/**
* Set up global post data.
*
* @since 1.5.0
* @since 4.4.0 Added the ability to pass a post ID to `$post`.
*
* @global WP_Query $wp_query WordPress Query object.
*
* @param WP_Post|object|int $post WP_Post instance or Post ID/object.
* @return bool True when finished.
*/
function setup_postdata( $post ) {
global $wp_query;
if ( ! empty( $wp_query ) && $wp_query instanceof WP_Query ) {
return $wp_query->setup_postdata( $post );
}
return false;
}
/**
* Generates post data.
*
* @since 5.2.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @param WP_Post|object|int $post WP_Post instance or Post ID/object.
* @return array|false Elements of post, or false on failure.
*/
function generate_postdata( $post ) {
global $wp_query;
if ( ! empty( $wp_query ) && $wp_query instanceof WP_Query ) {
return $wp_query->generate_postdata( $post );
}
return false;
}
_redirection_count', 5, $url ),
/**
* Filters the version of the HTTP protocol used in a request.
*
* @since 2.7.0
* @since 5.1.0 The `$url` parameter was added.
*
* @param string $version Version of HTTP used. Accepts '1.0' and '1.1'. Default '1.0'.
* @param string $url The request URL.
*/
'httpversion' => apply_filters( 'http_request_version', '1.0', $url ),
/**
* Filters the user agent value sent with an HTTP request.
*
* @since 2.7.0
* @since 5.1.0 The `$url` parameter was added.
*
* @param string $user_agent WordPress user agent string.
* @param string $url The request URL.
*/
'user-agent' => apply_filters( 'http_headers_useragent', 'WordPress/' . get_bloginfo( 'version' ) . '; ' . get_bloginfo( 'url' ), $url ),
/**
* Filters whether to pass URLs through wp_http_validate_url() in an HTTP request.
*
* @since 3.6.0
* @since 5.1.0 The `$url` parameter was added.
*
* @param bool $pass_url Whether to pass URLs through wp_http_validate_url(). Default false.
* @param string $url The request URL.
*/
'reject_unsafe_urls' => apply_filters( 'http_request_reject_unsafe_urls', false, $url ),
'blocking' => true,
'headers' => array(),
'cookies' => array(),
'body' => null,
'compress' => false,
'decompress' => true,
'sslverify' => true,
'sslcertificates' => ABSPATH . WPINC . '/certificates/ca-bundle.crt',
'stream' => false,
'filename' => null,
'limit_response_size' => null,
);
// Pre-parse for the HEAD checks.
$args = wp_parse_args( $args );
// By default, HEAD requests do not cause redirections.
if ( isset( $args['method'] ) && 'HEAD' === $args['method'] ) {
$defaults['redirection'] = 0;
}
$parsed_args = wp_parse_args( $args, $defaults );
/**
* Filters the arguments used in an HTTP request.
*
* @since 2.7.0
*
* @param array $parsed_args An array of HTTP request arguments.
* @param string $url The request URL.
*/
$parsed_args = apply_filters( 'http_request_args', $parsed_args, $url );
// The transports decrement this, store a copy of the original value for loop purposes.
if ( ! isset( $parsed_args['_redirection'] ) ) {
$parsed_args['_redirection'] = $parsed_args['redirection'];
}
/**
* Filters the preemptive return value of an HTTP request.
*
* Returning a non-false value from the filter will short-circuit the HTTP request and return
* early with that value. A filter should return one of:
*
* - An array containing 'headers', 'body', 'response', 'cookies', and 'filename' elements
* - A WP_Error instance
* - boolean false to avoid short-circuiting the response
*
* Returning any other value may result in unexpected behaviour.
*
* @since 2.9.0
*
* @param false|array|WP_Error $preempt A preemptive return value of an HTTP request. Default false.
* @param array $parsed_args HTTP request arguments.
* @param string $url The request URL.
*/
$pre = apply_filters( 'pre_http_request', false, $parsed_args, $url );
if ( false !== $pre ) {
return $pre;
}
if ( function_exists( 'wp_kses_bad_protocol' ) ) {
if ( $parsed_args['reject_unsafe_urls'] ) {
$url = wp_http_validate_url( $url );
}
if ( $url ) {
$url = wp_kses_bad_protocol( $url, array( 'http', 'https', 'ssl' ) );
}
}
$arrURL = parse_url( $url );
if ( empty( $url ) || empty( $arrURL['scheme'] ) ) {
$response = new WP_Error( 'http_request_failed', __( 'A valid URL was not provided.' ) );
/** This action is documented in wp-includes/class-http.php */
do_action( 'http_api_debug', $response, 'response', 'Requests', $parsed_args, $url );
return $response;
}
if ( $this->block_request( $url ) ) {
$response = new WP_Error( 'http_request_not_executed', __( 'User has blocked requests through HTTP.' ) );
/** This action is documented in wp-includes/class-http.php */
do_action( 'http_api_debug', $response, 'response', 'Requests', $parsed_args, $url );
return $response;
}
// If we are streaming to a file but no filename was given drop it in the WP temp dir
// and pick its name using the basename of the $url.
if ( $parsed_args['stream'] ) {
if ( empty( $parsed_args['filename'] ) ) {
$parsed_args['filename'] = get_temp_dir() . basename( $url );
}
// Force some settings if we are streaming to a file and check for existence
// and perms of destination directory.
$parsed_args['blocking'] = true;
if ( ! wp_is_writable( dirname( $parsed_args['filename'] ) ) ) {
$response = new WP_Error( 'http_request_failed', __( 'Destination directory for file streaming does not exist or is not writable.' ) );
/** This action is documented in wp-includes/class-http.php */
do_action( 'http_api_debug', $response, 'response', 'Requests', $parsed_args, $url );
return $response;
}
}
if ( is_null( $parsed_args['headers'] ) ) {
$parsed_args['headers'] = array();
}
// WP allows passing in headers as a string, weirdly.
if ( ! is_array( $parsed_args['headers'] ) ) {
$processedHeaders = WP_Http::processHeaders( $parsed_args['headers'] );
$parsed_args['headers'] = $processedHeaders['headers'];
}
// Setup arguments.
$headers = $parsed_args['headers'];
$data = $parsed_args['body'];
$type = $parsed_args['method'];
$options = array(
'timeout' => $parsed_args['timeout'],
'useragent' => $parsed_args['user-agent'],
'blocking' => $parsed_args['blocking'],
'hooks' => new WP_HTTP_Requests_Hooks( $url, $parsed_args ),
);
// Ensure redirects follow browser behaviour.
$options['hooks']->register( 'requests.before_redirect', array( get_class(), 'browser_redirect_compatibility' ) );
// Validate redirected URLs.
if ( function_exists( 'wp_kses_bad_protocol' ) && $parsed_args['reject_unsafe_urls'] ) {
$options['hooks']->register( 'requests.before_redirect', array( get_class(), 'validate_redirects' ) );
}
if ( $parsed_args['stream'] ) {
$options['filename'] = $parsed_args['filename'];
}
if ( empty( $parsed_args['redirection'] ) ) {
$options['follow_redirects'] = false;
} else {
$options['redirects'] = $parsed_args['redirection'];
}
// Use byte limit, if we can.
if ( isset( $parsed_args['limit_response_size'] ) ) {
$options['max_bytes'] = $parsed_args['limit_response_size'];
}
// If we've got cookies, use and convert them to Requests_Cookie.
if ( ! empty( $parsed_args['cookies'] ) ) {
$options['cookies'] = WP_Http::normalize_cookies( $parsed_args['cookies'] );
}
// SSL certificate handling.
if ( ! $parsed_args['sslverify'] ) {
$options['verify'] = false;
$options['verifyname'] = false;
} else {
$options['verify'] = $parsed_args['sslcertificates'];
}
// All non-GET/HEAD requests should put the arguments in the form body.
if ( 'HEAD' !== $type && 'GET' !== $type ) {
$options['data_format'] = 'body';
}
/**
* Filters whether SSL should be verified for non-local requests.
*
* @since 2.8.0
* @since 5.1.0 The `$url` parameter was added.
*
* @param bool $ssl_verify Whether to verify the SSL connection. Default true.
* @param string $url The request URL.
*/
$options['verify'] = apply_filters( 'https_ssl_verify', $options['verify'], $url );
// Check for proxies.
$proxy = new WP_HTTP_Proxy();
if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
$options['proxy'] = new Requests_Proxy_HTTP( $proxy->host() . ':' . $proxy->port() );
if ( $proxy->use_authentication() ) {
$options['proxy']->use_authentication = true;
$options['proxy']->user = $proxy->username();
$options['proxy']->pass = $proxy->password();
}
}
// Avoid issues where mbstring.func_overload is enabled.
mbstring_binary_safe_encoding();
try {
$requests_response = Requests::request( $url, $headers, $data, $type, $options );
// Convert the response into an array.
$http_response = new WP_HTTP_Requests_Response( $requests_response, $parsed_args['filename'] );
$response = $http_response->to_array();
// Add the original object to the array.
$response['http_response'] = $http_response;
} catch ( Requests_Exception $e ) {
$response = new WP_Error( 'http_request_failed', $e->getMessage() );
}
reset_mbstring_encoding();
/**
* Fires after an HTTP API response is received and before the response is returned.
*
* @since 2.8.0
*
* @param array|WP_Error $response HTTP response or WP_Error object.
* @param string $context Context under which the hook is fired.
* @param string $class HTTP transport used.
* @param array $parsed_args HTTP request arguments.
* @param string $url The request URL.
*/
do_action( 'http_api_debug', $response, 'response', 'Requests', $parsed_args, $url );
if ( is_wp_error( $response ) ) {
return $response;
}
if ( ! $parsed_args['blocking'] ) {
return array(
'headers' => array(),
'body' => '',
'response' => array(
'code' => false,
'message' => false,
),
'cookies' => array(),
'http_response' => null,
);
}
/**
* Filters the HTTP API response immediately before the response is returned.
*
* @since 2.9.0
*
* @param array $response HTTP response.
* @param array $parsed_args HTTP request arguments.
* @param string $url The request URL.
*/
return apply_filters( 'http_response', $response, $parsed_args, $url );
}
/**
* Normalizes cookies for using in Requests.
*
* @since 4.6.0
*
* @param array $cookies Array of cookies to send with the request.
* @return Requests_Cookie_Jar Cookie holder object.
*/
public static function normalize_cookies( $cookies ) {
$cookie_jar = new Requests_Cookie_Jar();
foreach ( $cookies as $name => $value ) {
if ( $value instanceof WP_Http_Cookie ) {
$cookie_jar[ $value->name ] = new Requests_Cookie( $value->name, $value->value, $value->get_attributes(), array( 'host-only' => $value->host_only ) );
} elseif ( is_scalar( $value ) ) {
$cookie_jar[ $name ] = new Requests_Cookie( $name, $value );
}
}
return $cookie_jar;
}
/**
* Match redirect behaviour to browser handling.
*
* Changes 302 redirects from POST to GET to match browser handling. Per
* RFC 7231, user agents can deviate from the strict reading of the
* specification for compatibility purposes.
*
* @since 4.6.0
*
* @param string $location URL to redirect to.
* @param array $headers Headers for the redirect.
* @param string|array $data Body to send with the request.
* @param array $options Redirect request options.
* @param Requests_Response $original Response object.
*/
public static function browser_redirect_compatibility( $location, $headers, $data, &$options, $original ) {
// Browser compatibility.
if ( 302 === $original->status_code ) {
$options['type'] = Requests::GET;
}
}
/**
* Validate redirected URLs.
*
* @since 4.7.5
*
* @throws Requests_Exception On unsuccessful URL validation.
* @param string $location URL to redirect to.
*/
public static function validate_redirects( $location ) {
if ( ! wp_http_validate_url( $location ) ) {
throw new Requests_Exception( __( 'A valid URL was not provided.' ), 'wp_http.redirect_failed_validation' );
}
}
/**
* Tests which transports are capable of supporting the request.
*
* @since 3.2.0
*
* @param array $args Request arguments.
* @param string $url URL to request.
* @return string|false Class name for the first transport that claims to support the request.
* False if no transport claims to support the request.
*/
public function _get_first_available_transport( $args, $url = null ) {
$transports = array( 'curl', 'streams' );
/**
* Filters which HTTP transports are available and in what order.
*
* @since 3.7.0
*
* @param string[] $transports Array of HTTP transports to check. Default array contains
* 'curl' and 'streams', in that order.
* @param array $args HTTP request arguments.
* @param string $url The URL to request.
*/
$request_order = apply_filters( 'http_api_transports', $transports, $args, $url );
// Loop over each transport on each HTTP request looking for one which will serve this request's needs.
foreach ( $request_order as $transport ) {
if ( in_array( $transport, $transports, true ) ) {
$transport = ucfirst( $transport );
}
$class = 'WP_Http_' . $transport;
// Check to see if this transport is a possibility, calls the transport statically.
if ( ! call_user_func( array( $class, 'test' ), $args, $url ) ) {
continue;
}
return $class;
}
return false;
}
/**
* Dispatches a HTTP request to a supporting transport.
*
* Tests each transport in order to find a transport which matches the request arguments.
* Also caches the transport instance to be used later.
*
* The order for requests is cURL, and then PHP Streams.
*
* @since 3.2.0
* @deprecated 5.1.0 Use WP_Http::request()
* @see WP_Http::request()
*
* @param string $url URL to request.
* @param array $args Request arguments.
* @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'.
* A WP_Error instance upon error.
*/
private function _dispatch_request( $url, $args ) {
static $transports = array();
$class = $this->_get_first_available_transport( $args, $url );
if ( ! $class ) {
return new WP_Error( 'http_failure', __( 'There are no HTTP transports available which can complete the requested request.' ) );
}
// Transport claims to support request, instantiate it and give it a whirl.
if ( empty( $transports[ $class ] ) ) {
$transports[ $class ] = new $class;
}
$response = $transports[ $class ]->request( $url, $args );
/** This action is documented in wp-includes/class-http.php */
do_action( 'http_api_debug', $response, 'response', $class, $args, $url );
if ( is_wp_error( $response ) ) {
return $response;
}
/** This filter is documented in wp-includes/class-http.php */
return apply_filters( 'http_response', $response, $args, $url );
}
/**
* Uses the POST HTTP method.
*
* Used for sending data that is expected to be in the body.
*
* @since 2.7.0
*
* @param string $url The request URL.
* @param string|array $args Optional. Override the defaults.
* @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'.
* A WP_Error instance upon error.
*/
public function post( $url, $args = array() ) {
$defaults = array( 'method' => 'POST' );
$parsed_args = wp_parse_args( $args, $defaults );
return $this->request( $url, $parsed_args );
}
/**
* Uses the GET HTTP method.
*
* Used for sending data that is expected to be in the body.
*
* @since 2.7.0
*
* @param string $url The request URL.
* @param string|array $args Optional. Override the defaults.
* @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'.
* A WP_Error instance upon error.
*/
public function get( $url, $args = array() ) {
$defaults = array( 'method' => 'GET' );
$parsed_args = wp_parse_args( $args, $defaults );
return $this->request( $url, $parsed_args );
}
/**
* Uses the HEAD HTTP method.
*
* Used for sending data that is expected to be in the body.
*
* @since 2.7.0
*
* @param string $url The request URL.
* @param string|array $args Optional. Override the defaults.
* @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'.
* A WP_Error instance upon error.
*/
public function head( $url, $args = array() ) {
$defaults = array( 'method' => 'HEAD' );
$parsed_args = wp_parse_args( $args, $defaults );
return $this->request( $url, $parsed_args );
}
/**
* Parses the responses and splits the parts into headers and body.
*
* @since 2.7.0
*
* @param string $strResponse The full response string.
* @return array {
* Array with response headers and body.
*
* @type string $headers HTTP response headers.
* @type string $body HTTP response body.
* }
*/
public static function processResponse( $strResponse ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid
$res = explode( "\r\n\r\n", $strResponse, 2 );
return array(
'headers' => $res[0],
'body' => isset( $res[1] ) ? $res[1] : '',
);
}
/**
* Transforms header string into an array.
*
* @since 2.7.0
*
* @param string|array $headers The original headers. If a string is passed, it will be converted
* to an array. If an array is passed, then it is assumed to be
* raw header data with numeric keys with the headers as the values.
* No headers must be passed that were already processed.
* @param string $url Optional. The URL that was requested. Default empty.
* @return array {
* Processed string headers. If duplicate headers are encountered,
* then a numbered array is returned as the value of that header-key.
*
* @type array $response {
* @type int $code The response status code. Default 0.
* @type string $message The response message. Default empty.
* }
* @type array $newheaders The processed header data as a multidimensional array.
* @type WP_Http_Cookie[] $cookies If the original headers contain the 'Set-Cookie' key,
* an array containing `WP_Http_Cookie` objects is returned.
* }
*/
public static function processHeaders( $headers, $url = '' ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid
// Split headers, one per array element.
if ( is_string( $headers ) ) {
// Tolerate line terminator: CRLF = LF (RFC 2616 19.3).
$headers = str_replace( "\r\n", "\n", $headers );
/*
* Unfold folded header fields. LWS = [CRLF] 1*( SP | HT ) ,
* (RFC 2616 2.2).
*/
$headers = preg_replace( '/\n[ \t]/', ' ', $headers );
// Create the headers array.
$headers = explode( "\n", $headers );
}
$response = array(
'code' => 0,
'message' => '',
);
/*
* If a redirection has taken place, The headers for each page request may have been passed.
* In this case, determine the final HTTP header and parse from there.
*/
for ( $i = count( $headers ) - 1; $i >= 0; $i-- ) {
if ( ! empty( $headers[ $i ] ) && false === strpos( $headers[ $i ], ':' ) ) {
$headers = array_splice( $headers, $i );
break;
}
}
$cookies = array();
$newheaders = array();
foreach ( (array) $headers as $tempheader ) {
if ( empty( $tempheader ) ) {
continue;
}
if ( false === strpos( $tempheader, ':' ) ) {
$stack = explode( ' ', $tempheader, 3 );
$stack[] = '';
list( , $response['code'], $response['message']) = $stack;
continue;
}
list($key, $value) = explode( ':', $tempheader, 2 );
$key = strtolower( $key );
$value = trim( $value );
if ( isset( $newheaders[ $key ] ) ) {
if ( ! is_array( $newheaders[ $key ] ) ) {
$newheaders[ $key ] = array( $newheaders[ $key ] );
}
$newheaders[ $key ][] = $value;
} else {
$newheaders[ $key ] = $value;
}
if ( 'set-cookie' === $key ) {
$cookies[] = new WP_Http_Cookie( $value, $url );
}
}
// Cast the Response Code to an int.
$response['code'] = (int) $response['code'];
return array(
'response' => $response,
'headers' => $newheaders,
'cookies' => $cookies,
);
}
/**
* Takes the arguments for a ::request() and checks for the cookie array.
*
* If it's found, then it upgrades any basic name => value pairs to WP_Http_Cookie instances,
* which are each parsed into strings and added to the Cookie: header (within the arguments array).
* Edits the array by reference.
*
* @since 2.8.0
*
* @param array $r Full array of args passed into ::request()
*/
public static function buildCookieHeader( &$r ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid
if ( ! empty( $r['cookies'] ) ) {
// Upgrade any name => value cookie pairs to WP_HTTP_Cookie instances.
foreach ( $r['cookies'] as $name => $value ) {
if ( ! is_object( $value ) ) {
$r['cookies'][ $name ] = new WP_Http_Cookie(
array(
'name' => $name,
'value' => $value,
)
);
}
}
$cookies_header = '';
foreach ( (array) $r['cookies'] as $cookie ) {
$cookies_header .= $cookie->getHeaderValue() . '; ';
}
$cookies_header = substr( $cookies_header, 0, -2 );
$r['headers']['cookie'] = $cookies_header;
}
}
/**
* Decodes chunk transfer-encoding, based off the HTTP 1.1 specification.
*
* Based off the HTTP http_encoding_dechunk function.
*
* @link https://tools.ietf.org/html/rfc2616#section-19.4.6 Process for chunked decoding.
*
* @since 2.7.0
*
* @param string $body Body content.
* @return string Chunked decoded body on success or raw body on failure.
*/
public static function chunkTransferDecode( $body ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid
// The body is not chunked encoded or is malformed.
if ( ! preg_match( '/^([0-9a-f]+)[^\r\n]*\r\n/i', trim( $body ) ) ) {
return $body;
}
$parsed_body = '';
// We'll be altering $body, so need a backup in case of error.
$body_original = $body;
while ( true ) {
$has_chunk = (bool) preg_match( '/^([0-9a-f]+)[^\r\n]*\r\n/i', $body, $match );
if ( ! $has_chunk || empty( $match[1] ) ) {
return $body_original;
}
$length = hexdec( $match[1] );
$chunk_length = strlen( $match[0] );
// Parse out the chunk of data.
$parsed_body .= substr( $body, $chunk_length, $length );
// Remove the chunk from the raw data.
$body = substr( $body, $length + $chunk_length );
// End of the document.
if ( '0' === trim( $body ) ) {
return $parsed_body;
}
}
}
/**
* Determines whether an HTTP API request to the given URL should be blocked.
*
* Those who are behind a proxy and want to prevent access to certain hosts may do so. This will
* prevent plugins from working and core functionality, if you don't include `api.wordpress.org`.
*
* You block external URL requests by defining `WP_HTTP_BLOCK_EXTERNAL` as true in your `wp-config.php`
* file and this will only allow localhost and your site to make requests. The constant
* `WP_ACCESSIBLE_HOSTS` will allow additional hosts to go through for requests. The format of the
* `WP_ACCESSIBLE_HOSTS` constant is a comma separated list of hostnames to allow, wildcard domains
* are supported, eg `*.wordpress.org` will allow for all subdomains of `wordpress.org` to be contacted.
*
* @since 2.8.0
*
* @link https://core.trac.wordpress.org/ticket/8927 Allow preventing external requests.
* @link https://core.trac.wordpress.org/ticket/14636 Allow wildcard domains in WP_ACCESSIBLE_HOSTS
*
* @param string $uri URI of url.
* @return bool True to block, false to allow.
*/
public function block_request( $uri ) {
// We don't need to block requests, because nothing is blocked.
if ( ! defined( 'WP_HTTP_BLOCK_EXTERNAL' ) || ! WP_HTTP_BLOCK_EXTERNAL ) {
return false;
}
$check = parse_url( $uri );
if ( ! $check ) {
return true;
}
$home = parse_url( get_option( 'siteurl' ) );
// Don't block requests back to ourselves by default.
if ( 'localhost' === $check['host'] || ( isset( $home['host'] ) && $home['host'] == $check['host'] ) ) {
/**
* Filters whether to block local HTTP API requests.
*
* A local request is one to `localhost` or to the same host as the site itself.
*
* @since 2.8.0
*
* @param bool $block Whether to block local requests. Default false.
*/
return apply_filters( 'block_local_requests', false );
}
if ( ! defined( 'WP_ACCESSIBLE_HOSTS' ) ) {
return true;
}
static $accessible_hosts = null;
static $wildcard_regex = array();
if ( null === $accessible_hosts ) {
$accessible_hosts = preg_split( '|,\s*|', WP_ACCESSIBLE_HOSTS );
if ( false !== strpos( WP_ACCESSIBLE_HOSTS, '*' ) ) {
$wildcard_regex = array();
foreach ( $accessible_hosts as $host ) {
$wildcard_regex[] = str_replace( '\*', '.+', preg_quote( $host, '/' ) );
}
$wildcard_regex = '/^(' . implode( '|', $wildcard_regex ) . ')$/i';
}
}
if ( ! empty( $wildcard_regex ) ) {
return ! preg_match( $wildcard_regex, $check['host'] );
} else {
return ! in_array( $check['host'], $accessible_hosts, true ); // Inverse logic, if it's in the array, then don't block it.
}
}
/**
* Used as a wrapper for PHP's parse_url() function that handles edgecases in < PHP 5.4.7.
*
* @deprecated 4.4.0 Use wp_parse_url()
* @see wp_parse_url()
*
* @param string $url The URL to parse.
* @return bool|array False on failure; Array of URL components on success;
* See parse_url()'s return values.
*/
protected static function parse_url( $url ) {
_deprecated_function( __METHOD__, '4.4.0', 'wp_parse_url()' );
return wp_parse_url( $url );
}
/**
* Converts a relative URL to an absolute URL relative to a given URL.
*
* If an Absolute URL is provided, no processing of that URL is done.
*
* @since 3.4.0
*
* @param string $maybe_relative_path The URL which might be relative.
* @param string $url The URL which $maybe_relative_path is relative to.
* @return string An Absolute URL, in a failure condition where the URL cannot be parsed, the relative URL will be returned.
*/
public static function make_absolute_url( $maybe_relative_path, $url ) {
if ( empty( $url ) ) {
return $maybe_relative_path;
}
$url_parts = wp_parse_url( $url );
if ( ! $url_parts ) {
return $maybe_relative_path;
}
$relative_url_parts = wp_parse_url( $maybe_relative_path );
if ( ! $relative_url_parts ) {
return $maybe_relative_path;
}
// Check for a scheme on the 'relative' URL.
if ( ! empty( $relative_url_parts['scheme'] ) ) {
return $maybe_relative_path;
}
$absolute_path = $url_parts['scheme'] . '://';
// Schemeless URLs will make it this far, so we check for a host in the relative URL
// and convert it to a protocol-URL.
if ( isset( $relative_url_parts['host'] ) ) {
$absolute_path .= $relative_url_parts['host'];
if ( isset( $relative_url_parts['port'] ) ) {
$absolute_path .= ':' . $relative_url_parts['port'];
}
} else {
$absolute_path .= $url_parts['host'];
if ( isset( $url_parts['port'] ) ) {
$absolute_path .= ':' . $url_parts['port'];
}
}
// Start off with the absolute URL path.
$path = ! empty( $url_parts['path'] ) ? $url_parts['path'] : '/';
// If it's a root-relative path, then great.
if ( ! empty( $relative_url_parts['path'] ) && '/' === $relative_url_parts['path'][0] ) {
$path = $relative_url_parts['path'];
// Else it's a relative path.
} elseif ( ! empty( $relative_url_parts['path'] ) ) {
// Strip off any file components from the absolute path.
$path = substr( $path, 0, strrpos( $path, '/' ) + 1 );
// Build the new path.
$path .= $relative_url_parts['path'];
// Strip all /path/../ out of the path.
while ( strpos( $path, '../' ) > 1 ) {
$path = preg_replace( '![^/]+/\.\./!', '', $path );
}
// Strip any final leading ../ from the path.
$path = preg_replace( '!^/(\.\./)+!', '', $path );
}
// Add the query string.
if ( ! empty( $relative_url_parts['query'] ) ) {
$path .= '?' . $relative_url_parts['query'];
}
return $absolute_path . '/' . ltrim( $path, '/' );
}
/**
* Handles an HTTP redirect and follows it if appropriate.
*
* @since 3.7.0
*
* @param string $url The URL which was requested.
* @param array $args The arguments which were used to make the request.
* @param array $response The response of the HTTP request.
* @return array|false|WP_Error An HTTP API response array if the redirect is successfully followed,
* false if no redirect is present, or a WP_Error object if there's an error.
*/
public static function handle_redirects( $url, $args, $response ) {
// If no redirects are present, or, redirects were not requested, perform no action.
if ( ! isset( $response['headers']['location'] ) || 0 === $args['_redirection'] ) {
return false;
}
// Only perform redirections on redirection http codes.
if ( $response['response']['code'] > 399 || $response['response']['code'] < 300 ) {
return false;
}
// Don't redirect if we've run out of redirects.
if ( $args['redirection']-- <= 0 ) {
return new WP_Error( 'http_request_failed', __( 'Too many redirects.' ) );
}
$redirect_location = $response['headers']['location'];
// If there were multiple Location headers, use the last header specified.
if ( is_array( $redirect_location ) ) {
$redirect_location = array_pop( $redirect_location );
}
$redirect_location = WP_Http::make_absolute_url( $redirect_location, $url );
// POST requests should not POST to a redirected location.
if ( 'POST' === $args['method'] ) {
if ( in_array( $response['response']['code'], array( 302, 303 ), true ) ) {
$args['method'] = 'GET';
}
}
// Include valid cookies in the redirect process.
if ( ! empty( $response['cookies'] ) ) {
foreach ( $response['cookies'] as $cookie ) {
if ( $cookie->test( $redirect_location ) ) {
$args['cookies'][] = $cookie;
}
}
}
return wp_remote_request( $redirect_location, $args );
}
/**
* Determines if a specified string represents an IP address or not.
*
* This function also detects the type of the IP address, returning either
* '4' or '6' to represent a IPv4 and IPv6 address respectively.
* This does not verify if the IP is a valid IP, only that it appears to be
* an IP address.
*
* @link http://home.deds.nl/~aeron/regex/ for IPv6 regex.
*
* @since 3.7.0
*
* @param string $maybe_ip A suspected IP address.
* @return int|false Upon success, '4' or '6' to represent a IPv4 or IPv6 address, false upon failure
*/
public static function is_ip_address( $maybe_ip ) {
if ( preg_match( '/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/', $maybe_ip ) ) {
return 4;
}
if ( false !== strpos( $maybe_ip, ':' ) && preg_match( '/^(((?=.*(::))(?!.*\3.+\3))\3?|([\dA-F]{1,4}(\3|:\b|$)|\2))(?4){5}((?4){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$/i', trim( $maybe_ip, ' []' ) ) ) {
return 6;
}
return false;
}
}