merge from trunk: openssl sni support (rev 289831)

ext/openssl/openssl.c

@@ -1041,6 +1041,11 @@ PHP_MINIT_FUNCTION(openssl)
 	REGISTER_LONG_CONSTANT("OPENSSL_KEYTYPE_EC", OPENSSL_KEYTYPE_EC, CONST_CS|CONST_PERSISTENT);
 #endif
 
+#if OPENSSL_VERSION_NUMBER >= 0x0090806fL && !defined(OPENSSL_NO_TLSEXT)
+	/* SNI support included in OpenSSL >= 0.9.8j */
+	REGISTER_LONG_CONSTANT("OPENSSL_TLSEXT_SERVER_NAME", 1, CONST_CS|CONST_PERSISTENT);
+#endif
+
 	/* Determine default SSL configuration file */
 	config_filename = getenv("OPENSSL_CONF");
 	if (config_filename == NULL) {

ext/openssl/tests/sni_001.phpt

@@ -0,0 +1,178 @@
+--TEST--
+SNI 001
+--SKIPIF--
+<?php
+	if (!extension_loaded('openssl')) die("skip openssl extension not available");
+	if (!getenv('SNI_TESTS')) die("skip Set SNI_TESTS to enable this test (uses remote resources)");
+?>
+--FILE--
+<?php
+/* Server Name Indication (SNI) tests
+ * 
+ * This test relies on https://sni.velox.ch/ and thus is disabled by default.
+ *
+ * sni.velox.ch uses 3 certificates :
+ * - CN=alice.sni.velox.ch (sent in response to server_name = alice.sni.velox.ch or not set)
+ * - CN=bob.sni.velox.ch (sent in response to server_name = bob.sni.velox.ch)
+ * - CN=*.sni.velox.ch (sent in response to server_name = mallory.sni.velox.ch or *.sni.velox.ch or sni.velox.ch)
+ *
+ * The test sends requests to the server, sending different names, and checks which certificate
+ * the server returned.
+ */
+
+function context() {
+	return stream_context_create(array(
+		'ssl' => array(
+			'capture_peer_cert' => true,
+		),
+	));
+}
+
+function get_CN($context) {
+
+	$ary = stream_context_get_options($context);
+	assert($ary);
+
+	$cert = $ary['ssl']['peer_certificate'];
+	assert($cert);
+
+	$cert_ary = openssl_x509_parse($cert);
+	return $cert_ary['subject']['CN'];
+}
+
+function do_http_test($url, $context) {
+
+	$fh = fopen($url, 'r', false, $context);
+	assert($fh);
+
+	var_dump(get_CN($context));
+}
+
+function do_ssl_test($url, $context) {
+
+	$fh = stream_socket_client($url, $errno, $errstr, 
+			ini_get("default_socket_timeout"), STREAM_CLIENT_CONNECT, $context);
+	assert($fh);
+
+	var_dump(get_CN($context));
+}
+
+function do_enable_crypto_test($url, $context) {
+
+	$fh = stream_socket_client($url, $errno, $errstr,
+		ini_get("default_socket_timeout"), STREAM_CLIENT_CONNECT, $context);
+	assert($fh);
+
+	$r = stream_socket_enable_crypto($fh, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);
+	assert($r);
+
+	var_dump(get_CN($context));
+}
+
+/* Test https:// streams */
+
+echo "-- auto host name (1) --\n";
+do_http_test('https://alice.sni.velox.ch/', context());
+
+echo "-- auto host name (2) --\n";
+do_http_test('https://bob.sni.velox.ch/', context());
+
+echo "-- auto host name (3) --\n";
+do_http_test('https://bob.sni.velox.ch./', context());
+
+echo "-- user supplied server name --\n";
+
+$context = context();
+stream_context_set_option($context, 'ssl', 'SNI_server_name', 'bob.sni.velox.ch');
+stream_context_set_option($context, 'http', 'header', b'Host: bob.sni.velox.ch');
+do_http_test('https://alice.sni.velox.ch/', $context);
+
+echo "-- sni disabled --\n";
+
+$context = context();
+stream_context_set_option($context, 'ssl', 'SNI_enabled', false);
+do_http_test('https://bob.sni.velox.ch/', $context);
+
+/* Test ssl:// socket streams */
+
+echo "-- raw SSL stream (1) --\n";
+do_ssl_test('ssl://bob.sni.velox.ch:443', context());
+
+echo "-- raw SSL stream (2) --\n";
+do_ssl_test('ssl://mallory.sni.velox.ch:443', context());
+
+echo "-- raw SSL stream with user supplied sni --\n";
+
+$context = context();
+stream_context_set_option($context, 'ssl', 'SNI_server_name', 'bob.sni.velox.ch');
+
+do_ssl_test('ssl://mallory.sni.velox.ch:443', $context);
+
+echo "-- raw SSL stream with sni disabled --\n";
+
+$context = context();
+stream_context_set_option($context, 'ssl', 'SNI_enabled', false);
+
+do_ssl_test('ssl://mallory.sni.velox.ch:443', $context);
+
+/* Test tcp:// socket streams with SSL enabled */
+
+echo "-- stream_socket_enable_crypto (1) --\n";
+
+do_enable_crypto_test('tcp://bob.sni.velox.ch:443', context());
+
+echo "-- stream_socket_enable_crypto (2) --\n";
+
+do_enable_crypto_test('tcp://mallory.sni.velox.ch:443', context());
+
+echo "-- stream_socket_enable_crypto with user supplied sni --\n";
+
+$context = context();
+stream_context_set_option($context, 'ssl', 'SNI_server_name', 'bob.sni.velox.ch');
+
+do_enable_crypto_test('tcp://mallory.sni.velox.ch:443', $context);
+
+echo "-- stream_socket_enable_crypto with sni disabled --\n";
+
+$context = context();
+stream_context_set_option($context, 'ssl', 'SNI_enabled', false);
+
+do_enable_crypto_test('tcp://mallory.sni.velox.ch:443', $context);
+
+echo "-- stream_socket_enable_crypto with long name --\n";
+
+$context = context();
+stream_context_set_option($context, 'ssl', 'SNI_server_name', str_repeat('a.', 500) . '.sni.velox.ch');
+
+do_enable_crypto_test('tcp://mallory.sni.velox.ch:443', $context);
+
+?>
+--EXPECTF--
+-- auto host name (1) --
+%unicode|string%(18) "alice.sni.velox.ch"
+-- auto host name (2) --
+%unicode|string%(16) "bob.sni.velox.ch"
+-- auto host name (3) --
+%unicode|string%(16) "bob.sni.velox.ch"
+-- user supplied server name --
+%unicode|string%(16) "bob.sni.velox.ch"
+-- sni disabled --
+%unicode|string%(18) "alice.sni.velox.ch"
+-- raw SSL stream (1) --
+%unicode|string%(16) "bob.sni.velox.ch"
+-- raw SSL stream (2) --
+%unicode|string%(14) "*.sni.velox.ch"
+-- raw SSL stream with user supplied sni --
+%unicode|string%(16) "bob.sni.velox.ch"
+-- raw SSL stream with sni disabled --
+%unicode|string%(18) "alice.sni.velox.ch"
+-- stream_socket_enable_crypto (1) --
+%unicode|string%(16) "bob.sni.velox.ch"
+-- stream_socket_enable_crypto (2) --
+%unicode|string%(14) "*.sni.velox.ch"
+-- stream_socket_enable_crypto with user supplied sni --
+%unicode|string%(16) "bob.sni.velox.ch"
+-- stream_socket_enable_crypto with sni disabled --
+%unicode|string%(18) "alice.sni.velox.ch"
+-- stream_socket_enable_crypto with long name --
+%unicode|string%(18) "alice.sni.velox.ch"

ext/openssl/xp_ssl.c

@@ -20,6 +20,7 @@
 
 #include "php.h"
 #include "ext/standard/file.h"
+#include "ext/standard/url.h"
 #include "streams/php_streams_int.h"
 #include "ext/standard/php_smart_str.h"
 #include "php_network.h"
@@ -54,6 +55,7 @@ typedef struct _php_openssl_netstream_data_t {
 	int is_client;
 	int ssl_active;
 	php_stream_xport_crypt_method_t method;
+	char *sni;
 	unsigned state_set:1;
 	unsigned _spare:31;
 } php_openssl_netstream_data_t;
@@ -283,6 +285,9 @@ static int php_openssl_sockop_close(php_stream *stream, int close_handle TSRMLS_
 		}
 	}
 
+	if (sslsock->sni) {
+		pefree(sslsock->sni, php_stream_is_persistent(stream));
+	}
 	pefree(sslsock, php_stream_is_persistent(stream));
 
 	return 0;
@@ -393,6 +398,12 @@ static inline int php_openssl_enable_crypto(php_stream *stream,
 		float timeout = sslsock->connect_timeout.tv_sec + sslsock->connect_timeout.tv_usec / 1000000;
 		int blocked = sslsock->s.is_blocked;
 
+#if OPENSSL_VERSION_NUMBER >= 0x0090806fL && !defined(OPENSSL_NO_TLSEXT)
+		if (sslsock->is_client && sslsock->sni) {
+			SSL_set_tlsext_host_name(sslsock->ssl_handle, sslsock->sni);
+		}
+#endif
+
 		if (!sslsock->state_set) {
 			if (sslsock->is_client) {
 				SSL_set_connect_state(sslsock->ssl_handle);
@@ -759,6 +770,52 @@ php_stream_ops php_openssl_socket_ops = {
 	php_openssl_sockop_set_option,
 };
 
+static char * get_sni(php_stream_context *ctx, char *resourcename, long resourcenamelen, int is_persistent TSRMLS_DC) {
+
+	php_url *url;
+
+	if (ctx) {
+		zval **val = NULL;
+
+		if (php_stream_context_get_option(ctx, "ssl", "SNI_enabled", &val) == SUCCESS && !zend_is_true(*val)) {
+			return NULL;
+		}
+		if (php_stream_context_get_option(ctx, "ssl", "SNI_server_name", &val) == SUCCESS) {
+			convert_to_string_ex(val);
+			return pestrdup(Z_STRVAL_PP(val), is_persistent);
+		}
+	}
+
+	if (!resourcename) {
+		return NULL;
+	}
+
+	url = php_url_parse_ex(resourcename, resourcenamelen);
+	if (!url) {
+		return NULL;
+	}
+
+	if (url->host) {
+		const char * host = url->host;
+		char * sni = NULL;
+		size_t len = strlen(host);
+
+		/* skip trailing dots */
+		while (len && host[len-1] == '.') {
+			--len;
+		}
+
+		if (len) {
+			sni = pestrndup(host, len, is_persistent);
+		}
+
+		php_url_free(url);
+		return sni;
+	}
+
+	php_url_free(url);
+	return NULL;
+}
 
 php_stream *php_openssl_ssl_socket_factory(const char *proto, long protolen,
 		char *resourcename, long resourcenamelen,
@@ -795,6 +852,8 @@ php_stream *php_openssl_ssl_socket_factory(const char *proto, long protolen,
 		return NULL;
 	}
 
+	sslsock->sni = get_sni(context, resourcename, resourcenamelen, !!persistent_id TSRMLS_CC);
+
 	if (strncmp(proto, "ssl", protolen) == 0) {
 		sslsock->enable_on_connect = 1;
 		sslsock->method = STREAM_CRYPTO_METHOD_SSLv23_CLIENT;