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<?php
/**
* Error Protection API: WP_Recovery_Mode_Email_Link class
*
* @package WordPress
* @since 5.2.0
*/
/**
* Core class used to send an email with a link to begin Recovery Mode.
*
* @since 5.2.0
*/
final class WP_Recovery_Mode_Email_Service {
const RATE_LIMIT_OPTION = 'recovery_mode_email_last_sent';
/**
* Service to generate recovery mode URLs.
*
* @since 5.2.0
* @var WP_Recovery_Mode_Link_Service
*/
private $link_service;
/**
* WP_Recovery_Mode_Email_Service constructor.
*
* @since 5.2.0
*
* @param WP_Recovery_Mode_Link_Service $link_service
*/
public function __construct( WP_Recovery_Mode_Link_Service $link_service ) {
$this->link_service = $link_service;
}
/**
* Sends the recovery mode email if the rate limit has not been sent.
*
* @since 5.2.0
*
* @param int $rate_limit Number of seconds before another email can be sent.
* @param array $error Error details from {@see error_get_last()}
* @param array $extension The extension that caused the error. {
* @type string $slug The extension slug. The plugin or theme's directory.
* @type string $type The extension type. Either 'plugin' or 'theme'.
* }
* @return true|WP_Error True if email sent, WP_Error otherwise.
*/
public function maybe_send_recovery_mode_email( $rate_limit, $error, $extension ) {
$last_sent = get_option( self::RATE_LIMIT_OPTION );
if ( ! $last_sent || time() > $last_sent + $rate_limit ) {
if ( ! update_option( self::RATE_LIMIT_OPTION, time() ) ) {
return new WP_Error( 'storage_error', __( 'Could not update the email last sent time.' ) );
}
$sent = $this->send_recovery_mode_email( $rate_limit, $error, $extension );
if ( $sent ) {
return true;
}
return new WP_Error( 'email_failed', __( 'The email could not be sent. Possible reason: your host may have disabled the mail() function.' ) );
}
$err_message = sprintf(
/* translators: 1. Last sent as a human time diff 2. Wait time as a human time diff. */
__( 'A recovery link was already sent %1$s ago. Please wait another %2$s before requesting a new email.' ),
human_time_diff( $last_sent ),
human_time_diff( $last_sent + $rate_limit )
);
return new WP_Error( 'email_sent_already', $err_message );
}
/**
* Clears the rate limit, allowing a new recovery mode email to be sent immediately.
*
* @since 5.2.0
*
* @return bool True on success, false on failure.
*/
public function clear_rate_limit() {
return delete_option( self::RATE_LIMIT_OPTION );
}
/**
* Sends the Recovery Mode email to the site admin email address.
*
* @since 5.2.0
*
* @param int $rate_limit Number of seconds before another email can be sent.
* @param array $error Error details from {@see error_get_last()}
* @param array $extension Extension that caused the error.
*
* @return bool Whether the email was sent successfully.
*/
private function send_recovery_mode_email( $rate_limit, $error, $extension ) {
$url = $this->link_service->generate_url();
$blogname = wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES );
$switched_locale = false;
// The switch_to_locale() function is loaded before it can actually be used.
if ( function_exists( 'switch_to_locale' ) && isset( $GLOBALS['wp_locale_switcher'] ) ) {
$switched_locale = switch_to_locale( get_locale() );
}
if ( $extension ) {
$cause = $this->get_cause( $extension );
$details = wp_strip_all_tags( wp_get_extension_error_description( $error ) );
if ( $details ) {
$header = __( 'Error Details' );
$details = "\n\n" . $header . "\n" . str_pad( '', strlen( $header ), '=' ) . "\n" . $details;
}
} else {
$cause = '';
$details = '';
}
/**
* Filters the support message sent with the the fatal error protection email.
*
* @since 5.2.0
*
* @param $message string The Message to include in the email.
*/
$support = apply_filters( 'recovery_email_support_info', __( 'Please contact your host for assistance with investigating this issue further.' ) );
/* translators: Do not translate LINK, EXPIRES, CAUSE, DETAILS, SITEURL, PAGEURL, SUPPORT: those are placeholders. */
$message = __(
'Howdy!
Since WordPress 5.2 there is a built-in feature that detects when a plugin or theme causes a fatal error on your site, and notifies you with this automated email.
###CAUSE###
First, visit your website (###SITEURL###) and check for any visible issues. Next, visit the page where the error was caught (###PAGEURL###) and check for any visible issues.
###SUPPORT###
If your site appears broken and you can\'t access your dashboard normally, WordPress now has a special "recovery mode". This lets you safely login to your dashboard and investigate further.
###LINK###
To keep your site safe, this link will expire in ###EXPIRES###. Don\'t worry about that, though: a new link will be emailed to you if the error occurs again after it expires.
###DETAILS###'
);
$message = str_replace(
array(
'###LINK###',
'###EXPIRES###',
'###CAUSE###',
'###DETAILS###',
'###SITEURL###',
'###PAGEURL###',
'###SUPPORT###',
),
array(
$url,
human_time_diff( time() + $rate_limit ),
$cause ? "\n{$cause}\n" : "\n",
$details,
home_url( '/' ),
home_url( $_SERVER['REQUEST_URI'] ),
$support,
),
$message
);
$email = array(
'to' => $this->get_recovery_mode_email_address(),
/* translators: %s: site name */
'subject' => __( '[%s] Your Site is Experiencing a Technical Issue' ),
'message' => $message,
'headers' => '',
);
/**
* Filter the contents of the Recovery Mode email.
*
* @since 5.2.0
*
* @param array $email Used to build wp_mail().
* @param string $url URL to enter recovery mode.
*/
$email = apply_filters( 'recovery_mode_email', $email, $url );
$sent = wp_mail(
$email['to'],
wp_specialchars_decode( sprintf( $email['subject'], $blogname ) ),
$email['message'],
$email['headers']
);
if ( $switched_locale ) {
restore_previous_locale();
}
return $sent;
}
/**
* Gets the email address to send the recovery mode link to.
*
* @since 5.2.0
*
* @return string Email address to send recovery mode link to.
*/
private function get_recovery_mode_email_address() {
if ( defined( 'RECOVERY_MODE_EMAIL' ) && is_email( RECOVERY_MODE_EMAIL ) ) {
return RECOVERY_MODE_EMAIL;
}
return get_option( 'admin_email' );
}
/**
* Gets the description indicating the possible cause for the error.
*
* @since 5.2.0
*
* @param array $extension The extension that caused the error.
* @return string Message about which extension caused the error.
*/
private function get_cause( $extension ) {
if ( 'plugin' === $extension['type'] ) {
if ( ! function_exists( 'get_plugins' ) ) {
require_once ABSPATH . 'wp-admin/includes/plugin.php';
}
$plugins = get_plugins();
$name = '';
// Assume plugin main file name first since it is a common convention.
if ( isset( $plugins[ "{$extension['slug']}/{$extension['slug']}.php" ] ) ) {
$name = $plugins[ "{$extension['slug']}/{$extension['slug']}.php" ]['Name'];
} else {
foreach ( $plugins as $file => $plugin_data ) {
if ( 0 === strpos( $file, "{$extension['slug']}/" ) || $file === $extension['slug'] ) {
$name = $plugin_data['Name'];
break;
}
}
}
if ( empty( $name ) ) {
$name = $extension['slug'];
}
/* translators: %s: plugin name */
$cause = sprintf( __( 'In this case, WordPress caught an error with one of your plugins, %s.' ), $name );
} else {
$theme = wp_get_theme( $extension['slug'] );
$name = $theme->exists() ? $theme->display( 'Name' ) : $extension['slug'];
/* translators: %s: theme name */
$cause = sprintf( __( 'In this case, WordPress caught an error with your theme, %s.' ), $name );
}
return $cause;
}
}
|