stream_socket_enable_crypto

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

stream_socket_enable_cryptoActiva/desactiva la encriptación en un socket ya conectado

Descripción

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

Habilita o deshabilita la encriptación en un flujo.

Una vez que la configuración de encriptación está habilitada, la criptografía se puede activar o desactivar pasando true o false al parámetro enable.

Parámetros

stream

El recurso de flujo.

enable

Activa/descativa la criptografía en el flujo.

crypto_type

Configura la encriptación en el flujo. Los métodos válidos son

  • STREAM_CRYPTO_METHOD_SSLv2_CLIENT
  • STREAM_CRYPTO_METHOD_SSLv3_CLIENT
  • STREAM_CRYPTO_METHOD_SSLv23_CLIENT
  • STREAM_CRYPTO_METHOD_TLS_CLIENT
  • STREAM_CRYPTO_METHOD_SSLv2_SERVER
  • STREAM_CRYPTO_METHOD_SSLv3_SERVER
  • STREAM_CRYPTO_METHOD_SSLv23_SERVER
  • STREAM_CRYPTO_METHOD_TLS_SERVER

Si se omite, se utilizará en su lugar la opción de contexto crypto_type sobre el contexto SSL del flujo.

session_stream

Establece el flujo con los ajustes de session_stream.

Valores devueltos

Devuelve true si se tuvo éxito, false si la negociación falló o 0 si no hay suficiente información y se debería intertar otra vez (sólo para sockets no bloqueados).

Historial de cambios

Versión Descripción
5.6.0 crypto_type ahora es opcional.

Ejemplos

Ejemplo #1 Ejemplo de stream_socket_enable_crypto()

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

/* Activar la encriptación para la fase de identificación */
stream_socket_enable_crypto($fp, true, STREAM_CRYPTO_METHOD_SSLv23_CLIENT);
fwrite($fp, "USER god\r\n");
fwrite($fp, "PASS secret\r\n");

/* Desactivar la encriptación para el resto */
stream_socket_enable_crypto($fp, false);

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

fclose($fp);
?>

El resultado del ejemplo sería algo similar a:


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User Contributed Notes 5 notes

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21
bobe at webnaute dot net
7 years ago
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);
?>
up
3
tigger (AT) tiggerswelt d0t net
16 years ago
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 ;-)
up
2
mark at kinoko dot fr
16 years ago
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...
up
1
bobe at webnaute dot net
8 years ago
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.
up
0
cgy at anymacro dot com
5 years ago
$context = stream_context_create();
stream_context_set_option($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
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