Add create_sid to session_set_save_handler and SessionHandler

A lot of code already existed to allow a custom create_sid handler, but
lacked a specific implementation.

Therefore I have added a 7th (optional) argument
session_set_save_handler, to allow a user function to be supplied for
session id generation.

If a create_sid function is not supplied, the default function is
called in its absence to preserve backwards compatibility.

Likewise create_sid only added to SessionHandler class, and not the
interface to maintain backwards compatibility. If the result is not
overridden, the default is called.

1 files changed, 16 insertions, 0 deletions

diff --git a/ext/session/mod_user_class.c b/ext/session/mod_user_class.c
index 1ed1e7bbd5..340c2ca97a 100644
--- a/ext/session/mod_user_class.c
+++ b/ext/session/mod_user_class.c
@@ -141,3 +141,19 @@ PHP_METHOD(SessionHandler, gc)
 	RETVAL_BOOL(SUCCESS == PS(default_mod)->s_gc(&PS(mod_data), maxlifetime, &nrdels TSRMLS_CC));
 }
 /* }}} */
+
+/* {{{ proto char SessionHandler::create_sid()
+   Wraps the old create_sid handler */
+PHP_METHOD(SessionHandler, create_sid)
+{
+	char *id;
+
+	zend_parse_parameters_none();
+
+	id = PS(default_mod)->s_create_sid(&PS(mod_data), NULL TSRMLS_CC);
+
+	RETVAL_STRING(id, 1);
+	efree(id);
+	return;
+}
+/* }}} */