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WordPress/wp-admin/includes/theme.php
Sergey Biryukov e2a64f0cd2 Themes: Make sure the theme API response is not an error before operating on it in themes_api(). 
This fixes a potential bug and avoids PHP warnings when `themes_api( 'query_themes' )` is called and a successful API response is not received.

Follow-up to [42632].

Props pierlo.
Fixes #53913.
Built from https://develop.svn.wordpress.org/trunk@51601


git-svn-id: http://core.svn.wordpress.org/trunk@51212 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-08-11 13:01:56 +00:00

1178 lines
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PHP
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<?php
/**
* WordPress Theme Administration API
*
* @package WordPress
* @subpackage Administration
*/
/**
* Remove a theme
*
* @since 2.8.0
*
* @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
*
* @param string $stylesheet Stylesheet of the theme to delete.
* @param string $redirect Redirect to page when complete.
* @return bool|null|WP_Error True on success, false if `$stylesheet` is empty, WP_Error on failure.
* Null if filesystem credentials are required to proceed.
*/
function delete_theme( $stylesheet, $redirect = '' ) {
global $wp_filesystem;
if ( empty( $stylesheet ) ) {
return false;
}
if ( empty( $redirect ) ) {
$redirect = wp_nonce_url( 'themes.php?action=delete&stylesheet=' . urlencode( $stylesheet ), 'delete-theme_' . $stylesheet );
}
ob_start();
$credentials = request_filesystem_credentials( $redirect );
$data = ob_get_clean();
if ( false === $credentials ) {
if ( ! empty( $data ) ) {
require_once ABSPATH . 'wp-admin/admin-header.php';
echo $data;
require_once ABSPATH . 'wp-admin/admin-footer.php';
exit;
}
return;
}
if ( ! WP_Filesystem( $credentials ) ) {
ob_start();
// Failed to connect. Error and request again.
request_filesystem_credentials( $redirect, '', true );
$data = ob_get_clean();
if ( ! empty( $data ) ) {
require_once ABSPATH . 'wp-admin/admin-header.php';
echo $data;
require_once ABSPATH . 'wp-admin/admin-footer.php';
exit;
}
return;
}
if ( ! is_object( $wp_filesystem ) ) {
return new WP_Error( 'fs_unavailable', __( 'Could not access filesystem.' ) );
}
if ( is_wp_error( $wp_filesystem->errors ) && $wp_filesystem->errors->has_errors() ) {
return new WP_Error( 'fs_error', __( 'Filesystem error.' ), $wp_filesystem->errors );
}
// Get the base plugin folder.
$themes_dir = $wp_filesystem->wp_themes_dir();
if ( empty( $themes_dir ) ) {
return new WP_Error( 'fs_no_themes_dir', __( 'Unable to locate WordPress theme directory.' ) );
}
/**
* Fires immediately before a theme deletion attempt.
*
* @since 5.8.0
*
* @param string $stylesheet Stylesheet of the theme to delete.
*/
do_action( 'delete_theme', $stylesheet );
$themes_dir = trailingslashit( $themes_dir );
$theme_dir = trailingslashit( $themes_dir . $stylesheet );
$deleted = $wp_filesystem->delete( $theme_dir, true );
/**
* Fires immediately after a theme deletion attempt.
*
* @since 5.8.0
*
* @param string $stylesheet Stylesheet of the theme to delete.
* @param bool $deleted Whether the theme deletion was successful.
*/
do_action( 'deleted_theme', $stylesheet, $deleted );
if ( ! $deleted ) {
return new WP_Error(
'could_not_remove_theme',
/* translators: %s: Theme name. */
sprintf( __( 'Could not fully remove the theme %s.' ), $stylesheet )
);
}
$theme_translations = wp_get_installed_translations( 'themes' );
// Remove language files, silently.
if ( ! empty( $theme_translations[ $stylesheet ] ) ) {
$translations = $theme_translations[ $stylesheet ];
foreach ( $translations as $translation => $data ) {
$wp_filesystem->delete( WP_LANG_DIR . '/themes/' . $stylesheet . '-' . $translation . '.po' );
$wp_filesystem->delete( WP_LANG_DIR . '/themes/' . $stylesheet . '-' . $translation . '.mo' );
$json_translation_files = glob( WP_LANG_DIR . '/themes/' . $stylesheet . '-' . $translation . '-*.json' );
if ( $json_translation_files ) {
array_map( array( $wp_filesystem, 'delete' ), $json_translation_files );
}
}
}
// Remove the theme from allowed themes on the network.
if ( is_multisite() ) {
WP_Theme::network_disable_theme( $stylesheet );
}
// Force refresh of theme update information.
delete_site_transient( 'update_themes' );
return true;
}
/**
* Gets the page templates available in this theme.
*
* @since 1.5.0
* @since 4.7.0 Added the `$post_type` parameter.
*
* @param WP_Post|null $post Optional. The post being edited, provided for context.
* @param string $post_type Optional. Post type to get the templates for. Default 'page'.
* @return string[] Array of template file names keyed by the template header name.
*/
function get_page_templates( $post = null, $post_type = 'page' ) {
return array_flip( wp_get_theme()->get_page_templates( $post, $post_type ) );
}
/**
* Tidies a filename for url display by the theme editor.
*
* @since 2.9.0
* @access private
*
* @param string $fullpath Full path to the theme file
* @param string $containingfolder Path of the theme parent folder
* @return string
*/
function _get_template_edit_filename( $fullpath, $containingfolder ) {
return str_replace( dirname( dirname( $containingfolder ) ), '', $fullpath );
}
/**
* Check if there is an update for a theme available.
*
* Will display link, if there is an update available.
*
* @since 2.7.0
*
* @see get_theme_update_available()
*
* @param WP_Theme $theme Theme data object.
*/
function theme_update_available( $theme ) {
echo get_theme_update_available( $theme );
}
/**
* Retrieve the update link if there is a theme update available.
*
* Will return a link if there is an update available.
*
* @since 3.8.0
*
* @param WP_Theme $theme WP_Theme object.
* @return string|false HTML for the update link, or false if invalid info was passed.
*/
function get_theme_update_available( $theme ) {
static $themes_update = null;
if ( ! current_user_can( 'update_themes' ) ) {
return false;
}
if ( ! isset( $themes_update ) ) {
$themes_update = get_site_transient( 'update_themes' );
}
if ( ! ( $theme instanceof WP_Theme ) ) {
return false;
}
$stylesheet = $theme->get_stylesheet();
$html = '';
if ( isset( $themes_update->response[ $stylesheet ] ) ) {
$update = $themes_update->response[ $stylesheet ];
$theme_name = $theme->display( 'Name' );
$details_url = add_query_arg(
array(
'TB_iframe' => 'true',
'width' => 1024,
'height' => 800,
),
$update['url']
); // Theme browser inside WP? Replace this. Also, theme preview JS will override this on the available list.
$update_url = wp_nonce_url( admin_url( 'update.php?action=upgrade-theme&amp;theme=' . urlencode( $stylesheet ) ), 'upgrade-theme_' . $stylesheet );
if ( ! is_multisite() ) {
if ( ! current_user_can( 'update_themes' ) ) {
$html = sprintf(
/* translators: 1: Theme name, 2: Theme details URL, 3: Additional link attributes, 4: Version number. */
'<p><strong>' . __( 'There is a new version of %1$s available. <a href="%2$s" %3$s>View version %4$s details</a>.' ) . '</strong></p>',
$theme_name,
esc_url( $details_url ),
sprintf(
'class="thickbox open-plugin-details-modal" aria-label="%s"',
/* translators: 1: Theme name, 2: Version number. */
esc_attr( sprintf( __( 'View %1$s version %2$s details' ), $theme_name, $update['new_version'] ) )
),
$update['new_version']
);
} elseif ( empty( $update['package'] ) ) {
$html = sprintf(
/* translators: 1: Theme name, 2: Theme details URL, 3: Additional link attributes, 4: Version number. */
'<p><strong>' . __( 'There is a new version of %1$s available. <a href="%2$s" %3$s>View version %4$s details</a>. <em>Automatic update is unavailable for this theme.</em>' ) . '</strong></p>',
$theme_name,
esc_url( $details_url ),
sprintf(
'class="thickbox open-plugin-details-modal" aria-label="%s"',
/* translators: 1: Theme name, 2: Version number. */
esc_attr( sprintf( __( 'View %1$s version %2$s details' ), $theme_name, $update['new_version'] ) )
),
$update['new_version']
);
} else {
$html = sprintf(
/* translators: 1: Theme name, 2: Theme details URL, 3: Additional link attributes, 4: Version number, 5: Update URL, 6: Additional link attributes. */
'<p><strong>' . __( 'There is a new version of %1$s available. <a href="%2$s" %3$s>View version %4$s details</a> or <a href="%5$s" %6$s>update now</a>.' ) . '</strong></p>',
$theme_name,
esc_url( $details_url ),
sprintf(
'class="thickbox open-plugin-details-modal" aria-label="%s"',
/* translators: 1: Theme name, 2: Version number. */
esc_attr( sprintf( __( 'View %1$s version %2$s details' ), $theme_name, $update['new_version'] ) )
),
$update['new_version'],
$update_url,
sprintf(
'aria-label="%s" id="update-theme" data-slug="%s"',
/* translators: %s: Theme name. */
esc_attr( sprintf( _x( 'Update %s now', 'theme' ), $theme_name ) ),
$stylesheet
)
);
}
}
}
return $html;
}
/**
* Retrieve list of WordPress theme features (aka theme tags).
*
* @since 3.1.0
* @since 3.2.0 Added 'Gray' color and 'Featured Image Header', 'Featured Images',
* 'Full Width Template', and 'Post Formats' features.
* @since 3.5.0 Added 'Flexible Header' feature.
* @since 3.8.0 Renamed 'Width' filter to 'Layout'.
* @since 3.8.0 Renamed 'Fixed Width' and 'Flexible Width' options
* to 'Fixed Layout' and 'Fluid Layout'.
* @since 3.8.0 Added 'Accessibility Ready' feature and 'Responsive Layout' option.
* @since 3.9.0 Combined 'Layout' and 'Columns' filters.
* @since 4.6.0 Removed 'Colors' filter.
* @since 4.6.0 Added 'Grid Layout' option.
* Removed 'Fixed Layout', 'Fluid Layout', and 'Responsive Layout' options.
* @since 4.6.0 Added 'Custom Logo' and 'Footer Widgets' features.
* Removed 'Blavatar' feature.
* @since 4.6.0 Added 'Blog', 'E-Commerce', 'Education', 'Entertainment', 'Food & Drink',
* 'Holiday', 'News', 'Photography', and 'Portfolio' subjects.
* Removed 'Photoblogging' and 'Seasonal' subjects.
* @since 4.9.0 Reordered the filters from 'Layout', 'Features', 'Subject'
* to 'Subject', 'Features', 'Layout'.
* @since 4.9.0 Removed 'BuddyPress', 'Custom Menu', 'Flexible Header',
* 'Front Page Posting', 'Microformats', 'RTL Language Support',
* 'Threaded Comments', and 'Translation Ready' features.
* @since 5.5.0 Added 'Block Editor Patterns', 'Block Editor Styles',
* and 'Full Site Editing' features.
* @since 5.5.0 Added 'Wide Blocks' layout option.
* @since 5.8.1 Added 'Template Editing' feature.
*
* @param bool $api Optional. Whether try to fetch tags from the WordPress.org API. Defaults to true.
* @return array Array of features keyed by category with translations keyed by slug.
*/
function get_theme_feature_list( $api = true ) {
// Hard-coded list is used if API is not accessible.
$features = array(
__( 'Subject' ) => array(
'blog' => __( 'Blog' ),
'e-commerce' => __( 'E-Commerce' ),
'education' => __( 'Education' ),
'entertainment' => __( 'Entertainment' ),
'food-and-drink' => __( 'Food & Drink' ),
'holiday' => __( 'Holiday' ),
'news' => __( 'News' ),
'photography' => __( 'Photography' ),
'portfolio' => __( 'Portfolio' ),
),
__( 'Features' ) => array(
'accessibility-ready' => __( 'Accessibility Ready' ),
'block-patterns' => __( 'Block Editor Patterns' ),
'block-styles' => __( 'Block Editor Styles' ),
'custom-background' => __( 'Custom Background' ),
'custom-colors' => __( 'Custom Colors' ),
'custom-header' => __( 'Custom Header' ),
'custom-logo' => __( 'Custom Logo' ),
'editor-style' => __( 'Editor Style' ),
'featured-image-header' => __( 'Featured Image Header' ),
'featured-images' => __( 'Featured Images' ),
'footer-widgets' => __( 'Footer Widgets' ),
'full-site-editing' => __( 'Full Site Editing' ),
'full-width-template' => __( 'Full Width Template' ),
'post-formats' => __( 'Post Formats' ),
'sticky-post' => __( 'Sticky Post' ),
'template-editing' => __( 'Template Editing' ),
'theme-options' => __( 'Theme Options' ),
),
__( 'Layout' ) => array(
'grid-layout' => __( 'Grid Layout' ),
'one-column' => __( 'One Column' ),
'two-columns' => __( 'Two Columns' ),
'three-columns' => __( 'Three Columns' ),
'four-columns' => __( 'Four Columns' ),
'left-sidebar' => __( 'Left Sidebar' ),
'right-sidebar' => __( 'Right Sidebar' ),
'wide-blocks' => __( 'Wide Blocks' ),
),
);
if ( ! $api || ! current_user_can( 'install_themes' ) ) {
return $features;
}
$feature_list = get_site_transient( 'wporg_theme_feature_list' );
if ( ! $feature_list ) {
set_site_transient( 'wporg_theme_feature_list', array(), 3 * HOUR_IN_SECONDS );
}
if ( ! $feature_list ) {
$feature_list = themes_api( 'feature_list', array() );
if ( is_wp_error( $feature_list ) ) {
return $features;
}
}
if ( ! $feature_list ) {
return $features;
}
set_site_transient( 'wporg_theme_feature_list', $feature_list, 3 * HOUR_IN_SECONDS );
$category_translations = array(
'Layout' => __( 'Layout' ),
'Features' => __( 'Features' ),
'Subject' => __( 'Subject' ),
);
$wporg_features = array();
// Loop over the wp.org canonical list and apply translations.
foreach ( (array) $feature_list as $feature_category => $feature_items ) {
if ( isset( $category_translations[ $feature_category ] ) ) {
$feature_category = $category_translations[ $feature_category ];
}
$wporg_features[ $feature_category ] = array();
foreach ( $feature_items as $feature ) {
if ( isset( $features[ $feature_category ][ $feature ] ) ) {
$wporg_features[ $feature_category ][ $feature ] = $features[ $feature_category ][ $feature ];
} else {
$wporg_features[ $feature_category ][ $feature ] = $feature;
}
}
}
return $wporg_features;
}
/**
* Retrieves theme installer pages from the WordPress.org Themes API.
*
* It is possible for a theme to override the Themes API result with three
* filters. Assume this is for themes, which can extend on the Theme Info to
* offer more choices. This is very powerful and must be used with care, when
* overriding the filters.
*
* The first filter, {@see 'themes_api_args'}, is for the args and gives the action
* as the second parameter. The hook for {@see 'themes_api_args'} must ensure that
* an object is returned.
*
* The second filter, {@see 'themes_api'}, allows a plugin to override the WordPress.org
* Theme API entirely. If `$action` is 'query_themes', 'theme_information', or 'feature_list',
* an object MUST be passed. If `$action` is 'hot_tags', an array should be passed.
*
* Finally, the third filter, {@see 'themes_api_result'}, makes it possible to filter the
* response object or array, depending on the `$action` type.
*
* Supported arguments per action:
*
* | Argument Name | 'query_themes' | 'theme_information' | 'hot_tags' | 'feature_list' |
* | -------------------| :------------: | :-----------------: | :--------: | :--------------: |
* | `$slug` | No | Yes | No | No |
* | `$per_page` | Yes | No | No | No |
* | `$page` | Yes | No | No | No |
* | `$number` | No | No | Yes | No |
* | `$search` | Yes | No | No | No |
* | `$tag` | Yes | No | No | No |
* | `$author` | Yes | No | No | No |
* | `$user` | Yes | No | No | No |
* | `$browse` | Yes | No | No | No |
* | `$locale` | Yes | Yes | No | No |
* | `$fields` | Yes | Yes | No | No |
*
* @since 2.8.0
*
* @param string $action API action to perform: 'query_themes', 'theme_information',
* 'hot_tags' or 'feature_list'.
* @param array|object $args {
* Optional. Array or object of arguments to serialize for the Themes API.
*
* @type string $slug The theme slug. Default empty.
* @type int $per_page Number of themes per page. Default 24.
* @type int $page Number of current page. Default 1.
* @type int $number Number of tags to be queried.
* @type string $search A search term. Default empty.
* @type string $tag Tag to filter themes. Default empty.
* @type string $author Username of an author to filter themes. Default empty.
* @type string $user Username to query for their favorites. Default empty.
* @type string $browse Browse view: 'featured', 'popular', 'updated', 'favorites'.
* @type string $locale Locale to provide context-sensitive results. Default is the value of get_locale().
* @type array $fields {
* Array of fields which should or should not be returned.
*
* @type bool $description Whether to return the theme full description. Default false.
* @type bool $sections Whether to return the theme readme sections: description, installation,
* FAQ, screenshots, other notes, and changelog. Default false.
* @type bool $rating Whether to return the rating in percent and total number of ratings.
* Default false.
* @type bool $ratings Whether to return the number of rating for each star (1-5). Default false.
* @type bool $downloaded Whether to return the download count. Default false.
* @type bool $downloadlink Whether to return the download link for the package. Default false.
* @type bool $last_updated Whether to return the date of the last update. Default false.
* @type bool $tags Whether to return the assigned tags. Default false.
* @type bool $homepage Whether to return the theme homepage link. Default false.
* @type bool $screenshots Whether to return the screenshots. Default false.
* @type int $screenshot_count Number of screenshots to return. Default 1.
* @type bool $screenshot_url Whether to return the URL of the first screenshot. Default false.
* @type bool $photon_screenshots Whether to return the screenshots via Photon. Default false.
* @type bool $template Whether to return the slug of the parent theme. Default false.
* @type bool $parent Whether to return the slug, name and homepage of the parent theme. Default false.
* @type bool $versions Whether to return the list of all available versions. Default false.
* @type bool $theme_url Whether to return theme's URL. Default false.
* @type bool $extended_author Whether to return nicename or nicename and display name. Default false.
* }
* }
* @return object|array|WP_Error Response object or array on success, WP_Error on failure. See the
* {@link https://developer.wordpress.org/reference/functions/themes_api/ function reference article}
* for more information on the make-up of possible return objects depending on the value of `$action`.
*/
function themes_api( $action, $args = array() ) {
// Include an unmodified $wp_version.
require ABSPATH . WPINC . '/version.php';
if ( is_array( $args ) ) {
$args = (object) $args;
}
if ( 'query_themes' === $action ) {
if ( ! isset( $args->per_page ) ) {
$args->per_page = 24;
}
}
if ( ! isset( $args->locale ) ) {
$args->locale = get_user_locale();
}
if ( ! isset( $args->wp_version ) ) {
$args->wp_version = substr( $wp_version, 0, 3 ); // x.y
}
/**
* Filters arguments used to query for installer pages from the WordPress.org Themes API.
*
* Important: An object MUST be returned to this filter.
*
* @since 2.8.0
*
* @param object $args Arguments used to query for installer pages from the WordPress.org Themes API.
* @param string $action Requested action. Likely values are 'theme_information',
* 'feature_list', or 'query_themes'.
*/
$args = apply_filters( 'themes_api_args', $args, $action );
/**
* Filters whether to override the WordPress.org Themes API.
*
* Passing a non-false value will effectively short-circuit the WordPress.org API request.
*
* If `$action` is 'query_themes', 'theme_information', or 'feature_list', an object MUST
* be passed. If `$action` is 'hot_tags', an array should be passed.
*
* @since 2.8.0
*
* @param false|object|array $override Whether to override the WordPress.org Themes API. Default false.
* @param string $action Requested action. Likely values are 'theme_information',
* 'feature_list', or 'query_themes'.
* @param object $args Arguments used to query for installer pages from the Themes API.
*/
$res = apply_filters( 'themes_api', false, $action, $args );
if ( ! $res ) {
$url = 'http://api.wordpress.org/themes/info/1.2/';
$url = add_query_arg(
array(
'action' => $action,
'request' => $args,
),
$url
);
$http_url = $url;
$ssl = wp_http_supports( array( 'ssl' ) );
if ( $ssl ) {
$url = set_url_scheme( $url, 'https' );
}
$http_args = array(
'user-agent' => 'WordPress/' . $wp_version . '; ' . home_url( '/' ),
);
$request = wp_remote_get( $url, $http_args );
if ( $ssl && is_wp_error( $request ) ) {
if ( ! wp_doing_ajax() ) {
trigger_error(
sprintf(
/* translators: %s: Support forums URL. */
__( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server&#8217;s configuration. If you continue to have problems, please try the <a href="%s">support forums</a>.' ),
__( 'https://wordpress.org/support/forums/' )
) . ' ' . __( '(WordPress could not establish a secure connection to WordPress.org. Please contact your server administrator.)' ),
headers_sent() || WP_DEBUG ? E_USER_WARNING : E_USER_NOTICE
);
}
$request = wp_remote_get( $http_url, $http_args );
}
if ( is_wp_error( $request ) ) {
$res = new WP_Error(
'themes_api_failed',
sprintf(
/* translators: %s: Support forums URL. */
__( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server&#8217;s configuration. If you continue to have problems, please try the <a href="%s">support forums</a>.' ),
__( 'https://wordpress.org/support/forums/' )
),
$request->get_error_message()
);
} else {
$res = json_decode( wp_remote_retrieve_body( $request ), true );
if ( is_array( $res ) ) {
// Object casting is required in order to match the info/1.0 format.
$res = (object) $res;
} elseif ( null === $res ) {
$res = new WP_Error(
'themes_api_failed',
sprintf(
/* translators: %s: Support forums URL. */
__( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server&#8217;s configuration. If you continue to have problems, please try the <a href="%s">support forums</a>.' ),
__( 'https://wordpress.org/support/forums/' )
),
wp_remote_retrieve_body( $request )
);
}
if ( isset( $res->error ) ) {
$res = new WP_Error( 'themes_api_failed', $res->error );
}
}
if ( ! is_wp_error( $res ) ) {
// Back-compat for info/1.2 API, upgrade the theme objects in query_themes to objects.
if ( 'query_themes' === $action ) {
foreach ( $res->themes as $i => $theme ) {
$res->themes[ $i ] = (object) $theme;
}
}
// Back-compat for info/1.2 API, downgrade the feature_list result back to an array.
if ( 'feature_list' === $action ) {
$res = (array) $res;
}
}
}
/**
* Filters the returned WordPress.org Themes API response.
*
* @since 2.8.0
*
* @param array|object|WP_Error $res WordPress.org Themes API response.
* @param string $action Requested action. Likely values are 'theme_information',
* 'feature_list', or 'query_themes'.
* @param object $args Arguments used to query for installer pages from the WordPress.org Themes API.
*/
return apply_filters( 'themes_api_result', $res, $action, $args );
}
/**
* Prepare themes for JavaScript.
*
* @since 3.8.0
*
* @param WP_Theme[] $themes Optional. Array of theme objects to prepare.
* Defaults to all allowed themes.
*
* @return array An associative array of theme data, sorted by name.
*/
function wp_prepare_themes_for_js( $themes = null ) {
$current_theme = get_stylesheet();
/**
* Filters theme data before it is prepared for JavaScript.
*
* Passing a non-empty array will result in wp_prepare_themes_for_js() returning
* early with that value instead.
*
* @since 4.2.0
*
* @param array $prepared_themes An associative array of theme data. Default empty array.
* @param WP_Theme[]|null $themes An array of theme objects to prepare, if any.
* @param string $current_theme The current theme slug.
*/
$prepared_themes = (array) apply_filters( 'pre_prepare_themes_for_js', array(), $themes, $current_theme );
if ( ! empty( $prepared_themes ) ) {
return $prepared_themes;
}
// Make sure the current theme is listed first.
$prepared_themes[ $current_theme ] = array();
if ( null === $themes ) {
$themes = wp_get_themes( array( 'allowed' => true ) );
if ( ! isset( $themes[ $current_theme ] ) ) {
$themes[ $current_theme ] = wp_get_theme();
}
}
$updates = array();
$no_updates = array();
if ( ! is_multisite() && current_user_can( 'update_themes' ) ) {
$updates_transient = get_site_transient( 'update_themes' );
if ( isset( $updates_transient->response ) ) {
$updates = $updates_transient->response;
}
if ( isset( $updates_transient->no_update ) ) {
$no_updates = $updates_transient->no_update;
}
}
WP_Theme::sort_by_name( $themes );
$parents = array();
$auto_updates = (array) get_site_option( 'auto_update_themes', array() );
foreach ( $themes as $theme ) {
$slug = $theme->get_stylesheet();
$encoded_slug = urlencode( $slug );
$parent = false;
if ( $theme->parent() ) {
$parent = $theme->parent();
$parents[ $slug ] = $parent->get_stylesheet();
$parent = $parent->display( 'Name' );
}
$customize_action = null;
if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) {
$customize_action = esc_url(
add_query_arg(
array(
'return' => urlencode( esc_url_raw( remove_query_arg( wp_removable_query_args(), wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) ),
),
wp_customize_url( $slug )
)
);
}
$update_requires_wp = isset( $updates[ $slug ]['requires'] ) ? $updates[ $slug ]['requires'] : null;
$update_requires_php = isset( $updates[ $slug ]['requires_php'] ) ? $updates[ $slug ]['requires_php'] : null;
$auto_update = in_array( $slug, $auto_updates, true );
$auto_update_action = $auto_update ? 'disable-auto-update' : 'enable-auto-update';
if ( isset( $updates[ $slug ] ) ) {
$auto_update_supported = true;
$auto_update_filter_payload = (object) $updates[ $slug ];
} elseif ( isset( $no_updates[ $slug ] ) ) {
$auto_update_supported = true;
$auto_update_filter_payload = (object) $no_updates[ $slug ];
} else {
$auto_update_supported = false;
/*
* Create the expected payload for the auto_update_theme filter, this is the same data
* as contained within $updates or $no_updates but used when the Theme is not known.
*/
$auto_update_filter_payload = (object) array(
'theme' => $slug,
'new_version' => $theme->get( 'Version' ),
'url' => '',
'package' => '',
'requires' => $theme->get( 'RequiresWP' ),
'requires_php' => $theme->get( 'RequiresPHP' ),
);
}
$auto_update_forced = wp_is_auto_update_forced_for_item( 'theme', null, $auto_update_filter_payload );
$prepared_themes[ $slug ] = array(
'id' => $slug,
'name' => $theme->display( 'Name' ),
'screenshot' => array( $theme->get_screenshot() ), // @todo Multiple screenshots.
'description' => $theme->display( 'Description' ),
'author' => $theme->display( 'Author', false, true ),
'authorAndUri' => $theme->display( 'Author' ),
'tags' => $theme->display( 'Tags' ),
'version' => $theme->get( 'Version' ),
'compatibleWP' => is_wp_version_compatible( $theme->get( 'RequiresWP' ) ),
'compatiblePHP' => is_php_version_compatible( $theme->get( 'RequiresPHP' ) ),
'updateResponse' => array(
'compatibleWP' => is_wp_version_compatible( $update_requires_wp ),
'compatiblePHP' => is_php_version_compatible( $update_requires_php ),
),
'parent' => $parent,
'active' => $slug === $current_theme,
'hasUpdate' => isset( $updates[ $slug ] ),
'hasPackage' => isset( $updates[ $slug ] ) && ! empty( $updates[ $slug ]['package'] ),
'update' => get_theme_update_available( $theme ),
'autoupdate' => array(
'enabled' => $auto_update || $auto_update_forced,
'supported' => $auto_update_supported,
'forced' => $auto_update_forced,
),
'actions' => array(
'activate' => current_user_can( 'switch_themes' ) ? wp_nonce_url( admin_url( 'themes.php?action=activate&amp;stylesheet=' . $encoded_slug ), 'switch-theme_' . $slug ) : null,
'customize' => $customize_action,
'delete' => ( ! is_multisite() && current_user_can( 'delete_themes' ) ) ? wp_nonce_url( admin_url( 'themes.php?action=delete&amp;stylesheet=' . $encoded_slug ), 'delete-theme_' . $slug ) : null,
'autoupdate' => wp_is_auto_update_enabled_for_type( 'theme' ) && ! is_multisite() && current_user_can( 'update_themes' )
? wp_nonce_url( admin_url( 'themes.php?action=' . $auto_update_action . '&amp;stylesheet=' . $encoded_slug ), 'updates' )
: null,
),
);
}
// Remove 'delete' action if theme has an active child.
if ( ! empty( $parents ) && array_key_exists( $current_theme, $parents ) ) {
unset( $prepared_themes[ $parents[ $current_theme ] ]['actions']['delete'] );
}
/**
* Filters the themes prepared for JavaScript, for themes.php.
*
* Could be useful for changing the order, which is by name by default.
*
* @since 3.8.0
*
* @param array $prepared_themes Array of theme data.
*/
$prepared_themes = apply_filters( 'wp_prepare_themes_for_js', $prepared_themes );
$prepared_themes = array_values( $prepared_themes );
return array_filter( $prepared_themes );
}
/**
* Print JS templates for the theme-browsing UI in the Customizer.
*
* @since 4.2.0
*/
function customize_themes_print_templates() {
?>
<script type="text/html" id="tmpl-customize-themes-details-view">
<div class="theme-backdrop"></div>
<div class="theme-wrap wp-clearfix" role="document">
<div class="theme-header">
<button type="button" class="left dashicons dashicons-no"><span class="screen-reader-text"><?php _e( 'Show previous theme' ); ?></span></button>
<button type="button" class="right dashicons dashicons-no"><span class="screen-reader-text"><?php _e( 'Show next theme' ); ?></span></button>
<button type="button" class="close dashicons dashicons-no"><span class="screen-reader-text"><?php _e( 'Close details dialog' ); ?></span></button>
</div>
<div class="theme-about wp-clearfix">
<div class="theme-screenshots">
<# if ( data.screenshot && data.screenshot[0] ) { #>
<div class="screenshot"><img src="{{ data.screenshot[0] }}" alt="" /></div>
<# } else { #>
<div class="screenshot blank"></div>
<# } #>
</div>
<div class="theme-info">
<# if ( data.active ) { #>
<span class="current-label"><?php _e( 'Current Theme' ); ?></span>
<# } #>
<h2 class="theme-name">{{{ data.name }}}<span class="theme-version">
<?php
/* translators: %s: Theme version. */
printf( __( 'Version: %s' ), '{{ data.version }}' );
?>
</span></h2>
<h3 class="theme-author">
<?php
/* translators: %s: Theme author link. */
printf( __( 'By %s' ), '{{{ data.authorAndUri }}}' );
?>
</h3>
<# if ( data.stars && 0 != data.num_ratings ) { #>
<div class="theme-rating">
{{{ data.stars }}}
<a class="num-ratings" target="_blank" href="{{ data.reviews_url }}">
<?php
printf(
'%1$s <span class="screen-reader-text">%2$s</span>',
/* translators: %s: Number of ratings. */
sprintf( __( '(%s ratings)' ), '{{ data.num_ratings }}' ),
/* translators: Accessibility text. */
__( '(opens in a new tab)' )
);
?>
</a>
</div>
<# } #>
<# if ( data.hasUpdate ) { #>
<# if ( data.updateResponse.compatibleWP && data.updateResponse.compatiblePHP ) { #>
<div class="notice notice-warning notice-alt notice-large" data-slug="{{ data.id }}">
<h3 class="notice-title"><?php _e( 'Update Available' ); ?></h3>
{{{ data.update }}}
</div>
<# } else { #>
<div class="notice notice-error notice-alt notice-large" data-slug="{{ data.id }}">
<h3 class="notice-title"><?php _e( 'Update Incompatible' ); ?></h3>
<p>
<# if ( ! data.updateResponse.compatibleWP && ! data.updateResponse.compatiblePHP ) { #>
<?php
printf(
/* translators: %s: Theme name. */
__( 'There is a new version of %s available, but it doesn&#8217;t work with your versions of WordPress and PHP.' ),
'{{{ data.name }}}'
);
if ( current_user_can( 'update_core' ) && current_user_can( 'update_php' ) ) {
printf(
/* translators: 1: URL to WordPress Updates screen, 2: URL to Update PHP page. */
' ' . __( '<a href="%1$s">Please update WordPress</a>, and then <a href="%2$s">learn more about updating PHP</a>.' ),
self_admin_url( 'update-core.php' ),
esc_url( wp_get_update_php_url() )
);
wp_update_php_annotation( '</p><p><em>', '</em>' );
} elseif ( current_user_can( 'update_core' ) ) {
printf(
/* translators: %s: URL to WordPress Updates screen. */
' ' . __( '<a href="%s">Please update WordPress</a>.' ),
self_admin_url( 'update-core.php' )
);
} elseif ( current_user_can( 'update_php' ) ) {
printf(
/* translators: %s: URL to Update PHP page. */
' ' . __( '<a href="%s">Learn more about updating PHP</a>.' ),
esc_url( wp_get_update_php_url() )
);
wp_update_php_annotation( '</p><p><em>', '</em>' );
}
?>
<# } else if ( ! data.updateResponse.compatibleWP ) { #>
<?php
printf(
/* translators: %s: Theme name. */
__( 'There is a new version of %s available, but it doesn&#8217;t work with your version of WordPress.' ),
'{{{ data.name }}}'
);
if ( current_user_can( 'update_core' ) ) {
printf(
/* translators: %s: URL to WordPress Updates screen. */
' ' . __( '<a href="%s">Please update WordPress</a>.' ),
self_admin_url( 'update-core.php' )
);
}
?>
<# } else if ( ! data.updateResponse.compatiblePHP ) { #>
<?php
printf(
/* translators: %s: Theme name. */
__( 'There is a new version of %s available, but it doesn&#8217;t work with your version of PHP.' ),
'{{{ data.name }}}'
);
if ( current_user_can( 'update_php' ) ) {
printf(
/* translators: %s: URL to Update PHP page. */
' ' . __( '<a href="%s">Learn more about updating PHP</a>.' ),
esc_url( wp_get_update_php_url() )
);
wp_update_php_annotation( '</p><p><em>', '</em>' );
}
?>
<# } #>
</p>
</div>
<# } #>
<# } #>
<# if ( data.parent ) { #>
<p class="parent-theme">
<?php
printf(
/* translators: %s: Theme name. */
__( 'This is a child theme of %s.' ),
'<strong>{{{ data.parent }}}</strong>'
);
?>
</p>
<# } #>
<# if ( ! data.compatibleWP || ! data.compatiblePHP ) { #>
<div class="notice notice-error notice-alt notice-large"><p>
<# if ( ! data.compatibleWP && ! data.compatiblePHP ) { #>
<?php
_e( 'This theme doesn&#8217;t work with your versions of WordPress and PHP.' );
if ( current_user_can( 'update_core' ) && current_user_can( 'update_php' ) ) {
printf(
/* translators: 1: URL to WordPress Updates screen, 2: URL to Update PHP page. */
' ' . __( '<a href="%1$s">Please update WordPress</a>, and then <a href="%2$s">learn more about updating PHP</a>.' ),
self_admin_url( 'update-core.php' ),
esc_url( wp_get_update_php_url() )
);
wp_update_php_annotation( '</p><p><em>', '</em>' );
} elseif ( current_user_can( 'update_core' ) ) {
printf(
/* translators: %s: URL to WordPress Updates screen. */
' ' . __( '<a href="%s">Please update WordPress</a>.' ),
self_admin_url( 'update-core.php' )
);
} elseif ( current_user_can( 'update_php' ) ) {
printf(
/* translators: %s: URL to Update PHP page. */
' ' . __( '<a href="%s">Learn more about updating PHP</a>.' ),
esc_url( wp_get_update_php_url() )
);
wp_update_php_annotation( '</p><p><em>', '</em>' );
}
?>
<# } else if ( ! data.compatibleWP ) { #>
<?php
_e( 'This theme doesn&#8217;t work with your version of WordPress.' );
if ( current_user_can( 'update_core' ) ) {
printf(
/* translators: %s: URL to WordPress Updates screen. */
' ' . __( '<a href="%s">Please update WordPress</a>.' ),
self_admin_url( 'update-core.php' )
);
}
?>
<# } else if ( ! data.compatiblePHP ) { #>
<?php
_e( 'This theme doesn&#8217;t work with your version of PHP.' );
if ( current_user_can( 'update_php' ) ) {
printf(
/* translators: %s: URL to Update PHP page. */
' ' . __( '<a href="%s">Learn more about updating PHP</a>.' ),
esc_url( wp_get_update_php_url() )
);
wp_update_php_annotation( '</p><p><em>', '</em>' );
}
?>
<# } #>
</p></div>
<# } #>
<p class="theme-description">{{{ data.description }}}</p>
<# if ( data.tags ) { #>
<p class="theme-tags"><span><?php _e( 'Tags:' ); ?></span> {{{ data.tags }}}</p>
<# } #>
</div>
</div>
<div class="theme-actions">
<# if ( data.active ) { #>
<button type="button" class="button button-primary customize-theme"><?php _e( 'Customize' ); ?></button>
<# } else if ( 'installed' === data.type ) { #>
<?php if ( current_user_can( 'delete_themes' ) ) { ?>
<# if ( data.actions && data.actions['delete'] ) { #>
<a href="{{{ data.actions['delete'] }}}" data-slug="{{ data.id }}" class="button button-secondary delete-theme"><?php _e( 'Delete' ); ?></a>
<# } #>
<?php } ?>
<# if ( data.compatibleWP && data.compatiblePHP ) { #>
<button type="button" class="button button-primary preview-theme" data-slug="{{ data.id }}"><?php _e( 'Live Preview' ); ?></button>
<# } else { #>
<button class="button button-primary disabled"><?php _e( 'Live Preview' ); ?></button>
<# } #>
<# } else { #>
<# if ( data.compatibleWP && data.compatiblePHP ) { #>
<button type="button" class="button theme-install" data-slug="{{ data.id }}"><?php _e( 'Install' ); ?></button>
<button type="button" class="button button-primary theme-install preview" data-slug="{{ data.id }}"><?php _e( 'Install &amp; Preview' ); ?></button>
<# } else { #>
<button type="button" class="button disabled"><?php _ex( 'Cannot Install', 'theme' ); ?></button>
<button type="button" class="button button-primary disabled"><?php _e( 'Install &amp; Preview' ); ?></button>
<# } #>
<# } #>
</div>
</div>
</script>
<?php
}
/**
* Determines whether a theme is technically active but was paused while
* loading.
*
* 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
*
* @param string $theme Path to the theme directory relative to the themes directory.
* @return bool True, if in the list of paused themes. False, not in the list.
*/
function is_theme_paused( $theme ) {
if ( ! isset( $GLOBALS['_paused_themes'] ) ) {
return false;
}
if ( get_stylesheet() !== $theme && get_template() !== $theme ) {
return false;
}
return array_key_exists( $theme, $GLOBALS['_paused_themes'] );
}
/**
* Gets the error that was recorded for a paused theme.
*
* @since 5.2.0
*
* @param string $theme Path to the theme directory relative to the themes
* directory.
* @return array|false Array of error information as it was returned by
* `error_get_last()`, or false if none was recorded.
*/
function wp_get_theme_error( $theme ) {
if ( ! isset( $GLOBALS['_paused_themes'] ) ) {
return false;
}
if ( ! array_key_exists( $theme, $GLOBALS['_paused_themes'] ) ) {
return false;
}
return $GLOBALS['_paused_themes'][ $theme ];
}
/**
* Tries to resume a single theme.
*
* If a redirect was provided and a functions.php file was found, we first ensure that
* functions.php file does not throw fatal errors anymore.
*
* The way it works is by setting the redirection to the error before trying to
* include the file. If the theme fails, then the redirection will not be overwritten
* with the success message and the theme will not be resumed.
*
* @since 5.2.0
*
* @param string $theme Single theme to resume.
* @param string $redirect Optional. URL to redirect to. Default empty string.
* @return bool|WP_Error True on success, false if `$theme` was not paused,
* `WP_Error` on failure.
*/
function resume_theme( $theme, $redirect = '' ) {
list( $extension ) = explode( '/', $theme );
/*
* We'll override this later if the theme could be resumed without
* creating a fatal error.
*/
if ( ! empty( $redirect ) ) {
$functions_path = '';
if ( strpos( STYLESHEETPATH, $extension ) ) {
$functions_path = STYLESHEETPATH . '/functions.php';
} elseif ( strpos( TEMPLATEPATH, $extension ) ) {
$functions_path = TEMPLATEPATH . '/functions.php';
}
if ( ! empty( $functions_path ) ) {
wp_redirect(
add_query_arg(
'_error_nonce',
wp_create_nonce( 'theme-resume-error_' . $theme ),
$redirect
)
);
// Load the theme's functions.php to test whether it throws a fatal error.
ob_start();
if ( ! defined( 'WP_SANDBOX_SCRAPING' ) ) {
define( 'WP_SANDBOX_SCRAPING', true );
}
include $functions_path;
ob_clean();
}
}
$result = wp_paused_themes()->delete( $extension );
if ( ! $result ) {
return new WP_Error(
'could_not_resume_theme',
__( 'Could not resume the theme.' )
);
}
return true;
}
/**
* Renders an admin notice in case some themes have been paused due to errors.
*
* @since 5.2.0
*
* @global string $pagenow
*/
function paused_themes_notice() {
if ( 'themes.php' === $GLOBALS['pagenow'] ) {
return;
}
if ( ! current_user_can( 'resume_themes' ) ) {
return;
}
if ( ! isset( $GLOBALS['_paused_themes'] ) || empty( $GLOBALS['_paused_themes'] ) ) {
return;
}
printf(
'<div class="notice notice-error"><p><strong>%s</strong><br>%s</p><p><a href="%s">%s</a></p></div>',
__( 'One or more themes failed to load properly.' ),
__( 'You can find more details and make changes on the Themes screen.' ),
esc_url( admin_url( 'themes.php' ) ),
__( 'Go to the Themes screen' )
);
}
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