<?php defined( 'ABSPATH' ) or die();
if ( ! class_exists( 'rsssl_certificate' ) ) {
class rsssl_certificate {
private static $_this;
public function __construct() {
if ( isset( self::$_this ) ) {
wp_die( 'you cannot create a second instance.' );
}
self::$_this = $this;
}
public static function this() {
return self::$_this;
}
/**
*
* @since 3.0
*
* Check if the certificate is valid
*
* @return bool
*
*/
public function is_valid(): bool {
$domain = $this->get_domain();
if ( ! $domain || ! function_exists( 'stream_context_get_params' ) ) {
set_transient( 'rsssl_certinfo', 'no-response', DAY_IN_SECONDS );
} else {
$certinfo = $this->get_certinfo( $domain );
if ( ! $certinfo ) {
return false;
}
$domain_valid = $this->is_domain_valid( $certinfo, $domain );
$date_valid = $this->is_date_valid( $certinfo );
if ( $domain_valid && $date_valid ) {
return true;
}
}
return false;
}
/**
* get domain
* @return string
*/
public function get_domain() {
$domain = site_url();
//Parse to strip off any /subfolder/
$parse = parse_url( $domain );
return isset( $parse['host'] ) ? $parse['host'] : false;
}
/**
*
* Check common name(s) and alternative name(s) on certificate and match them to the site_url ($domain)
*
* @since 3.0
*
* @access public
* @param $certinfo
* @param $domain
* @return bool
*
*/
public function is_domain_valid( $certinfo, $domain ): bool {
//first check standard situation
//Get both the common name(s) and the alternative names from the certificate
$certificate_common_names = isset( $certinfo['subject']['CN'] ) ? $certinfo['subject']['CN'] : '';
$certificate_alternative_names = isset( $certinfo['extensions']['subjectAltName'] ) ? $certinfo['extensions']['subjectAltName'] : '';
//Check if the domain is found in either the certificate common name(s) (CN) or alternative name(s) (AN)
$pos_cn = strpos( $certificate_common_names, $domain );
$pos_an = strpos( $certificate_alternative_names, $domain );
//If the domain is found, return true
if ( false !== $pos_cn || false !== $pos_an ) {
return true;
}
//if nothing found, we check for wildcard
//strip of asterisk, and check if the wildcard domain is part of current domain
$cert_domains = array();
if ( $this->is_wildcard() ) {
$certificate_alternative_names = explode( ', ', $certificate_alternative_names );
$cert_domains[] = trim( str_replace( '*', '', $certificate_common_names ) );
foreach ( $certificate_alternative_names as $subject_alt_name ) {
$cert_domains[] = trim( str_replace( '*', '', $subject_alt_name ) );
}
foreach ( $cert_domains as $cert_domain ) {
//If the wildcard domain is found, return true
if ( ( strpos( $domain, $cert_domain ) !== false ) ) {
return true;
}
}
}
return false;
}
/**
* Check if detection failed
* @return bool
*/
public function detection_failed() {
$certinfo = get_transient( 'rsssl_certinfo' );
if ( $certinfo && 'no-response' === $certinfo ) {
return true;
}
return false;
}
/**
*
* Check if the date is valid by looking at the validFrom and validTo times
*
* @since 3.0
*
* @access public
*
* @return bool
*
*/
public function is_date_valid( $certinfo ) {
//Get the start date and end date from the certificate
$start_date = isset( $certinfo['validFrom_time_t'] ) ? $certinfo['validFrom_time_t'] : false;
$end_date = isset( $certinfo['validTo_time_t'] ) ? $certinfo['validTo_time_t'] : false;
$current_date = time();
//Check if the current date is between the start date and end date. If so, return true
if ( $current_date > $start_date && ( $current_date < $end_date ) ) {
return true;
}
return false;
}
/**
* Check if the certificate is valid, but about to expire.
* @return bool
*/
public function about_to_expire() {
//if not valid, it's already expired
if ( ! $this->is_valid() ) {
return true;
}
//we have now renewed the cert info transient
$certinfo = get_transient( 'rsssl_certinfo' );
$end_date = isset( $certinfo['validTo_time_t'] ) ? $certinfo['validTo_time_t'] : false;
$expiry_days_time = strtotime( '+' . rsssl_le_manual_generation_renewal_check . ' days' );
if ( $expiry_days_time < $end_date ) {
return false;
} else {
return true;
}
}
/**
*
* Check if the certificate is a wildcard certificate
* Function is used in class-multisite.php to determine whether to show a notice for multisite subfolder installations without a wildcard certificate
*
* @since 3.0
*
* @access public
*
* @return bool
*
*/
public function is_wildcard() {
$domain = network_site_url();
$certinfo = $this->get_certinfo( $domain );
//Get the certificate common name
$certificate_common_name = isset( $certinfo['subject']['CN'] ) ? $certinfo['subject']['CN'] : false;
$subject_alt_names = isset( $certinfo['extensions']['subjectAltName'] ) ? explode( ', ', $certinfo['extensions']['subjectAltName'] ) : false;
//Check if the common name(s) contain an *
if ( strpos( $certificate_common_name, '*' ) ) {
return true;
}
if ( is_array( $subject_alt_names ) ) {
foreach ( $subject_alt_names as $subject_alt_name ) {
if ( strpos( $subject_alt_name, '*' ) !== false ) {
return true;
}
}
}
return false;
}
/**
*
* Get the certificate info
*
* @since 3.0
* @param string $url
* @return string|bool
* @access public
*
*/
public function get_certinfo( $url ) {
$certinfo = get_transient( 'rsssl_certinfo' );
//if the last check resulted in a "no response", we skip this check for a day.
if ( 'no-response' === $certinfo ) {
return false;
}
if ( ! $certinfo || RSSSL()->admin->is_settings_page() ) {
$url = 'https://' . str_replace( array( 'https://', 'http://' ), '', $url );
$original_parse = parse_url( $url, PHP_URL_HOST );
if ( $original_parse ) {
$get = stream_context_create( array( 'ssl' => array( 'capture_peer_cert' => true ) ) );
if ( $get ) {
set_error_handler( array( $this, 'custom_error_handling' ) );
$read = stream_socket_client( 'ssl://' . $original_parse . ':443', $errno, $errstr, 5, STREAM_CLIENT_CONNECT, $get );
restore_error_handler();
if ( ! $read ) {
$certinfo = 'no-response';
}
if ( 0 === $errno && $read ) {
$cert = stream_context_get_params( $read );
if ( isset( $cert['options']['ssl']['peer_certificate'] ) ) {
$certinfo = openssl_x509_parse( $cert['options']['ssl']['peer_certificate'] );
} else {
$certinfo = 'no-response';
}
}
}
}
set_transient( 'rsssl_certinfo', $certinfo, DAY_IN_SECONDS );
}
if ( 'not-valid' === $certinfo ) {
return false;
}
if ( ! empty( $certinfo ) ) {
return $certinfo;
}
return false;
}
/**
* Catch errors
*
* @since 3.0
*
* @access public
* @param $errno
* @param $errstr
* @param $errfile
* @param $errline
* @param array $errcontext
*
* @return bool
*/
public function custom_error_handling( $errno, $errstr, $errfile, $errline, $errcontext = array() ) {
return true;
}
//class closure
}
}
ما بقاش الذكاء الاصطناعي مجرد خيال علمي أو تطور مستنيينه في المستقبل… لأ، ده بقى واقع عايشينه كل يوم، وبيأثر بشكل مباشر على شغلنا، ومهاراتنا، وحتى على الوظايف نفسها. في الفيديو ده، هنتكلم عن إزاي الذكاء الاصطناعي قلب موازين سوق العمل، إيه المهن اللي بدأت تختفي، وإيه اللي طلع جديد، وإزاي نجهز نفسنا للمستقبل اللي بدأ خلاص.