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/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* GIO - GLib Input, Output and Streaming Library
*
* Copyright 2010 Red Hat, Inc
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see
* <http://www.gnu.org/licenses/>.
*
* In addition, when the library is used with OpenSSL, a special
* exception applies. Refer to the LICENSE_EXCEPTION file for details.
*/
#include "config.h"
#include "glib.h"
#include <errno.h>
#include <string.h>
#include <gnutls/gnutls.h>
#include "gtlsbackend-gnutls.h"
#include "gtlscertificate-gnutls.h"
#include "gtlsclientconnection-gnutls.h"
#include "gtlsfiledatabase-gnutls.h"
#include "gtlsserverconnection-gnutls.h"
struct _GTlsBackendGnutls
{
GObject parent_instance;
GMutex mutex;
GTlsDatabase *default_database;
};
static void g_tls_backend_gnutls_interface_init (GTlsBackendInterface *iface);
G_DEFINE_DYNAMIC_TYPE_EXTENDED (GTlsBackendGnutls, g_tls_backend_gnutls, G_TYPE_OBJECT, G_TYPE_FLAG_FINAL,
G_IMPLEMENT_INTERFACE_DYNAMIC (G_TYPE_TLS_BACKEND,
g_tls_backend_gnutls_interface_init);)
#ifdef GTLS_GNUTLS_DEBUG
static void
gtls_log_func (int level, const char *msg)
{
g_print ("GTLS: %s", msg);
}
#endif
static gpointer
gtls_gnutls_init (gpointer data)
{
GTypePlugin *plugin;
gnutls_global_init ();
#ifdef GTLS_GNUTLS_DEBUG
gnutls_global_set_log_function (gtls_log_func);
gnutls_global_set_log_level (9);
#endif
/* Leak the module to keep it from being unloaded. */
plugin = g_type_get_plugin (G_TYPE_TLS_BACKEND_GNUTLS);
if (plugin)
g_type_plugin_use (plugin);
return NULL;
}
GNUTLS_SKIP_GLOBAL_INIT
static GOnce gnutls_inited = G_ONCE_INIT;
static void
g_tls_backend_gnutls_init (GTlsBackendGnutls *backend)
{
/* Once we call gtls_gnutls_init(), we can't allow the module to be
* unloaded (since if gnutls gets unloaded but gcrypt doesn't, then
* gcrypt will have dangling pointers to gnutls's mutex functions).
* So we initialize it from here rather than at class init time so
* that it doesn't happen unless the app is actually using TLS (as
* opposed to just calling g_io_modules_scan_all_in_directory()).
*/
g_once (&gnutls_inited, gtls_gnutls_init, NULL);
g_mutex_init (&backend->mutex);
}
static void
g_tls_backend_gnutls_finalize (GObject *object)
{
GTlsBackendGnutls *backend = G_TLS_BACKEND_GNUTLS (object);
g_clear_object (&backend->default_database);
g_mutex_clear (&backend->mutex);
G_OBJECT_CLASS (g_tls_backend_gnutls_parent_class)->finalize (object);
}
static void
g_tls_backend_gnutls_class_init (GTlsBackendGnutlsClass *backend_class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (backend_class);
gobject_class->finalize = g_tls_backend_gnutls_finalize;
}
static void
g_tls_backend_gnutls_class_finalize (GTlsBackendGnutlsClass *backend_class)
{
}
static GTlsDatabase *
g_tls_backend_gnutls_get_default_database (GTlsBackend *backend)
{
GTlsBackendGnutls *self = G_TLS_BACKEND_GNUTLS (backend);
GTlsDatabase *result;
GError *error = NULL;
g_mutex_lock (&self->mutex);
if (self->default_database)
{
result = g_object_ref (self->default_database);
}
else
{
result = G_TLS_DATABASE (g_tls_database_gnutls_new (&error));
if (error)
{
g_warning ("Failed to load TLS database: %s", error->message);
g_clear_error (&error);
}
else
{
g_assert (result);
self->default_database = g_object_ref (result);
}
}
g_mutex_unlock (&self->mutex);
return result;
}
static void
g_tls_backend_gnutls_interface_init (GTlsBackendInterface *iface)
{
iface->get_certificate_type = g_tls_certificate_gnutls_get_type;
iface->get_client_connection_type = g_tls_client_connection_gnutls_get_type;
iface->get_server_connection_type = g_tls_server_connection_gnutls_get_type;
iface->get_file_database_type = g_tls_file_database_gnutls_get_type;
iface->get_default_database = g_tls_backend_gnutls_get_default_database;
iface->get_dtls_client_connection_type = g_tls_client_connection_gnutls_get_type;
iface->get_dtls_server_connection_type = g_tls_server_connection_gnutls_get_type;
}
void
g_tls_backend_gnutls_register (GIOModule *module)
{
g_tls_backend_gnutls_register_type (G_TYPE_MODULE (module));
if (!module)
g_io_extension_point_register (G_TLS_BACKEND_EXTENSION_POINT_NAME);
g_io_extension_point_implement (G_TLS_BACKEND_EXTENSION_POINT_NAME,
g_tls_backend_gnutls_get_type (),
"gnutls",
0);
}
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