stream_socket_enable_crypto

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

stream_socket_enable_crypto — Turns encryption on/off on an already connected socket

说明

stream_socket_enable_crypto ( resource $stream , bool $enable , int $crypto_type = ? , resource $session_stream = ? ) : mixed

Enable or disable encryption on the stream.

Once the crypto settings are established, cryptography can be turned on and off dynamically by passing true or false in the enable parameter.

参数

stream

The stream resource.

enable

Enable/disable cryptography on the stream.

crypto_type

Setup encryption on the stream. Valid methods are

  • STREAM_CRYPTO_METHOD_SSLv2_CLIENT
  • STREAM_CRYPTO_METHOD_SSLv3_CLIENT
  • STREAM_CRYPTO_METHOD_SSLv23_CLIENT
  • STREAM_CRYPTO_METHOD_ANY_CLIENT
  • STREAM_CRYPTO_METHOD_TLS_CLIENT
  • STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT
  • STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT
  • STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT
  • STREAM_CRYPTO_METHOD_SSLv2_SERVER
  • STREAM_CRYPTO_METHOD_SSLv3_SERVER
  • STREAM_CRYPTO_METHOD_SSLv23_SERVER
  • STREAM_CRYPTO_METHOD_ANY_SERVER
  • STREAM_CRYPTO_METHOD_TLS_SERVER
  • STREAM_CRYPTO_METHOD_TLSv1_0_SERVER
  • STREAM_CRYPTO_METHOD_TLSv1_1_SERVER
  • STREAM_CRYPTO_METHOD_TLSv1_2_SERVER

If omitted, the crypto_method context option on the stream's SSL context will be used instead.

session_stream

Seed the stream with settings from session_stream.

返回值

Returns true on success, false if negotiation has failed or 0 if there isn't enough data and you should try again (only for non-blocking sockets).

范例

Example #1 stream_socket_enable_crypto() example

<?php
$fp = stream_socket_client("tcp://myproto.example.com:31337", $errno, $errstr, 30);
if (!$fp) {
    die("Unable to connect: $errstr ($errno)");
}

/* Turn on encryption for login phase */
stream_socket_enable_crypto($fp, true, STREAM_CRYPTO_METHOD_SSLv23_CLIENT);
fwrite($fp, "USER god\r\n");
fwrite($fp, "PASS secret\r\n");

/* Turn off encryption for the rest */
stream_socket_enable_crypto($fp, false);

while ($motd = fgets($fp)) {
    echo $motd;
}

fclose($fp);
?>

以上例程的输出类似于：


    

   

  

 


 
 




 

  
User Contributed Notes

 


  
  

   cgy at anymacro dot com
   19-Jul-2018 09:42
   

    


$context = stream_context_create();

stream_context_set_option($context, 'ssl', 'allow_self_signed', false);

stream_context_set_option($context, 'ssl', 'verify_peer', false);

stream_context_set_option($context, 'ssl', 'verify_peer_name', false);

$fp = stream_socket_client("unix:///tmp/ssl.sock", $errno, $errstr, 30,STREAM_CLIENT_ASYNC_CONNECT | STREAM_CLIENT_CONNECT,$context);



stream_socket_enable_crypto($fp, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);



错误提示：

PHP Warning:  stream_socket_enable_crypto(): this stream does not support SSL/crypto

    

   

  

 

  
  

   bobe at webnaute dot net
   05-Apr-2016 06:35
   

    


Constants added in PHP 5.6 :



STREAM_CRYPTO_METHOD_ANY_CLIENT

STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT

STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT

STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT

STREAM_CRYPTO_METHOD_ANY_SERVER

STREAM_CRYPTO_METHOD_TLSv1_0_SERVER

STREAM_CRYPTO_METHOD_TLSv1_1_SERVER

STREAM_CRYPTO_METHOD_TLSv1_2_SERVER



Now, be careful because since PHP 5.6.7, STREAM_CRYPTO_METHOD_TLS_CLIENT (same for _SERVER) no longer means any tls version but tls 1.0 only (for "backward compatibility"...).



Before PHP 5.6.7 :

STREAM_CRYPTO_METHOD_SSLv23_CLIENT = STREAM_CRYPTO_METHOD_SSLv2_CLIENT|STREAM_CRYPTO_METHOD_SSLv3_CLIENT

STREAM_CRYPTO_METHOD_TLS_CLIENT = STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT|STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT|STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT



PHP >= 5.6.7

STREAM_CRYPTO_METHOD_SSLv23_CLIENT = STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT|STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT|STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT

STREAM_CRYPTO_METHOD_TLS_CLIENT = STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT



PHP bug : https://bugs.php.net/bug.php?id=69195

Commit : https://github.com/php/php-src/commit/10bc5fd4c4c8e1dd57bd911b086e9872a56300a0



STREAM_CRYPTO_METHOD_SSLv23_CLIENT is not safe to use because before php 5.6.7, it means sslv2 or sslv3. So, you should do this :

<?php

$crypto_method = STREAM_CRYPTO_METHOD_TLS_CLIENT;



if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {

    $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;

    $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;

}



stream_socket_enable_crypto($socket, true, $crypto_method);

?>


    

   

  

 

  
  

   bobe at webnaute dot net
   20-Mar-2015 04:54
   

    


There is an error in the description of the third argument:

"If omitted, the crypto_type context option on the stream's SSL context will be used instead."



The name of the context option is "crypto_method", NOT "crypto_type" which is just the name of the argument.

    

   

  

 

  
  

   mark at kinoko dot fr
   06-Nov-2007 11:00
   

    


Just to avoid letting you search everywhere why your code doesn't work when using this function to enable crypto as a server, and when using TLS, you have to put the certificate in the "ssl" context, even if you start a TLS, SSLv3, etc.. server.



I had some troubles because of that...

    

   

  

 

  
  

   tigger (AT) tiggerswelt d0t net
   30-May-2007 03:15
   

    


As already mentioned above:



stream_socket_enable_crypto is likely to fail/return zero if the socket is in non-blocking mode.



You may either wait some seconds until all neccessary data has arrived or switch temporary to blocking mode:



<?PHP



  stream_set_blocking ($fd, true);

  stream_socket_enable_crypto ($fd, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);

  stream_set_blocking ($fd, false);



?>



This works very fine for me ;-)

    

   

  

 









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