<?php
/**
* Upgrader API: Automatic_Upgrader_Skin class
*
* @package WordPress
* @subpackage Upgrader
* @since 4.6.0
*/
/**
* Upgrader Skin for Automatic WordPress Upgrades.
*
* This skin is designed to be used when no output is intended, all output
* is captured and stored for the caller to process and log/email/discard.
*
* @since 3.7.0
* @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader-skins.php.
*
* @see Bulk_Upgrader_Skin
*/
class Automatic_Upgrader_Skin extends WP_Upgrader_Skin {
protected $messages = array();
/**
* Determines whether the upgrader needs FTP/SSH details in order to connect
* to the filesystem.
*
* @since 3.7.0
* @since 4.6.0 The `$context` parameter default changed from `false` to an empty string.
*
* @see request_filesystem_credentials()
*
* @param bool|WP_Error $error Optional. Whether the current request has failed to connect,
* or an error object. Default false.
* @param string $context Optional. Full path to the directory that is tested
* for being writable. Default empty.
* @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. Default false.
* @return bool True on success, false on failure.
*/
public function request_filesystem_credentials( $error = false, $context = '', $allow_relaxed_file_ownership = false ) {
if ( $context ) {
$this->options['context'] = $context;
}
/*
* TODO: Fix up request_filesystem_credentials(), or split it, to allow us to request a no-output version.
* This will output a credentials form in event of failure. We don't want that, so just hide with a buffer.
*/
ob_start();
$result = parent::request_filesystem_credentials( $error, $context, $allow_relaxed_file_ownership );
ob_end_clean();
return $result;
}
/**
* Retrieves the upgrade messages.
*
* @since 3.7.0
*
* @return array Messages during an upgrade.
*/
public function get_upgrade_messages() {
return $this->messages;
}
/**
* Stores a message about the upgrade.
*
* @since 3.7.0
*
* @param string|array|WP_Error $data Message data.
* @param mixed ...$args Optional text replacements.
*/
public function feedback( $data, ...$args ) {
if ( is_wp_error( $data ) ) {
$string = $data->get_error_message();
} elseif ( is_array( $data ) ) {
return;
} else {
$string = $data;
}
if ( ! empty( $this->upgrader->strings[ $string ] ) ) {
$string = $this->upgrader->strings[ $string ];
}
if ( strpos( $string, '%' ) !== false ) {
if ( ! empty( $args ) ) {
$string = vsprintf( $string, $args );
}
}
$string = trim( $string );
// Only allow basic HTML in the messages, as it'll be used in emails/logs rather than direct browser output.
$string = wp_kses(
$string,
array(
'a' => array(
'href' => true,
),
'br' => true,
'em' => true,
'strong' => true,
)
);
if ( empty( $string ) ) {
return;
}
$this->messages[] = $string;
}
/**
* Creates a new output buffer.
*
* @since 3.7.0
*/
public function header() {
ob_start();
}
/**
* Retrieves the buffered content, deletes the buffer, and processes the output.
*
* @since 3.7.0
*/
public function footer() {
$output = ob_get_clean();
if ( ! empty( $output ) ) {
$this->feedback( $output );
}
}
}