[gck] In preparation for public release, rename library.

 * Next steps will include cleaning up the API making it ready
   for gobject introspection etc..

1 files changed, 541 insertions, 0 deletions

diff --git a/gck/gck-call.c b/gck/gck-call.c
new file mode 100644
index 0000000..939d81b
--- /dev/null
+++ b/gck/gck-call.c
@@ -0,0 +1,541 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+/* gck-call.c - the GObject PKCS#11 wrapper library
+
+   Copyright (C) 2008, Stefan Walter
+
+   The Gnome Keyring Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The Gnome Keyring 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the Gnome Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+
+   Author: Stef Walter <nielsen@memberwebs.com>
+*/
+
+#include "config.h"
+
+#include "gck-private.h"
+
+#include <string.h>
+
+typedef struct _GckCallSource GckCallSource;
+
+static gpointer _gck_call_parent_class = NULL;
+
+struct _GckCall {
+	GObject parent;
+	GckModule *module;
+
+	/* For making the call */
+	GckPerformFunc perform;
+	GckCompleteFunc complete;
+	GckArguments *args;
+	GCancellable *cancellable;
+	GDestroyNotify destroy;
+	CK_RV rv;
+
+	/* For result callback only */
+	gpointer object;
+	GAsyncReadyCallback callback;
+	gpointer user_data;
+};
+
+struct _GckCallClass {
+	GObjectClass parent;
+	GThreadPool *thread_pool;
+	GAsyncQueue *completed_queue;
+	guint completed_id;
+};
+
+struct _GckCallSource {
+	GSource source;
+	GckCallClass *klass;
+};
+
+/* ----------------------------------------------------------------------------
+ * HELPER FUNCTIONS
+ */
+
+static CK_RV
+perform_call (GckPerformFunc func, GCancellable *cancellable, GckArguments *args)
+{
+	CK_RV rv;
+
+	/* Double check a few things */
+	g_assert (func);
+	g_assert (args);
+
+	if (cancellable) {
+		if (g_cancellable_is_cancelled (cancellable)) {
+			return CKR_FUNCTION_CANCELED;
+		}
+
+		/* Push for the notify callback */
+		g_object_ref (cancellable);
+		g_cancellable_push_current (cancellable);
+	}
+
+	rv = (func) (args);
+
+	if (cancellable) {
+		g_cancellable_pop_current (cancellable);
+		g_object_unref (cancellable);
+	}
+
+	return rv;
+}
+
+static gboolean
+complete_call (GckCompleteFunc func, GckArguments *args, CK_RV result)
+{
+	/* Double check a few things */
+	g_assert (args);
+
+	/* If no complete function, then just ignore */
+	if (!func)
+		return TRUE;
+
+	return (func) (args, result);
+}
+
+
+static void
+process_async_call (gpointer data, GckCallClass *klass)
+{
+	GckCall *call = GCK_CALL (data);
+
+	g_assert (GCK_IS_CALL (call));
+
+	call->rv = perform_call (call->perform, call->cancellable, call->args);
+
+	g_async_queue_push (klass->completed_queue, call);
+
+	/* Wakeup main thread if on a separate thread */
+	g_main_context_wakeup (NULL);
+}
+
+static void
+process_result (GckCall *call, gpointer unused)
+{
+	gboolean stop = FALSE;
+
+	/* Double check a few things */
+	g_assert (GCK_IS_CALL (call));
+
+	if (call->cancellable) {
+		/* Don't call the callback when cancelled */
+		if (g_cancellable_is_cancelled (call->cancellable)) {
+			call->rv = CKR_FUNCTION_CANCELED;
+			stop = TRUE;
+		}
+	}
+
+	/*
+	 * Hmmm, does the function want to actually be done?
+	 * If not, then queue this call again.
+	 */
+	if (!stop && !complete_call (call->complete, call->args, call->rv)) {
+		g_object_ref (call);
+		g_thread_pool_push (GCK_CALL_GET_CLASS (call)->thread_pool, call, NULL);
+
+	/* All done, finish processing */
+	} else if (call->callback) {
+		g_assert (G_IS_OBJECT (call->object));
+		(call->callback) (G_OBJECT (call->object), G_ASYNC_RESULT (call),
+				  call->user_data);
+	}
+}
+
+static gboolean
+process_completed (GckCallClass *klass)
+{
+	gpointer call;
+
+	g_assert (klass->completed_queue);
+
+	call = g_async_queue_try_pop (klass->completed_queue);
+	if (call) {
+		process_result (call, NULL);
+		g_object_unref (call);
+		return TRUE;
+	}
+
+	return FALSE;
+}
+
+static gboolean
+completed_prepare(GSource* base, gint *timeout)
+{
+	GckCallSource *source = (GckCallSource*)base;
+	gboolean have;
+
+	g_assert (source->klass->completed_queue);
+	have = g_async_queue_length (source->klass->completed_queue) > 0;
+	*timeout = have ? 0 : -1;
+	return have;
+}
+
+static gboolean
+completed_check(GSource* base)
+{
+	GckCallSource *source = (GckCallSource*)base;
+	g_assert (source->klass->completed_queue);
+	return g_async_queue_length (source->klass->completed_queue) > 0;
+}
+
+static gboolean
+completed_dispatch(GSource* base, GSourceFunc callback, gpointer user_data)
+{
+	GckCallSource *source = (GckCallSource*)base;
+	process_completed (source->klass);
+	return TRUE;
+}
+
+static void
+completed_finalize(GSource* base)
+{
+
+}
+
+static GSourceFuncs completed_functions = {
+	completed_prepare,
+	completed_check,
+	completed_dispatch,
+	completed_finalize
+};
+
+/* ----------------------------------------------------------------------------
+ * OBJECT
+ */
+
+static void
+_gck_call_init (GckCall *call)
+{
+	call->rv = CKR_OK;
+}
+
+static void
+_gck_call_finalize (GObject *obj)
+{
+	GckCall *call = GCK_CALL (obj);
+
+	if (call->module)
+		g_object_unref (call->module);
+	call->module = NULL;
+
+	if (call->object)
+		g_object_unref (call->object);
+	call->object = NULL;
+
+	if (call->cancellable)
+		g_object_unref (call->cancellable);
+	call->cancellable = NULL;
+
+	if (call->destroy)
+		(call->destroy) (call->args);
+	call->destroy = NULL;
+	call->args = NULL;
+
+	G_OBJECT_CLASS (_gck_call_parent_class)->finalize (obj);
+}
+
+static gpointer
+_gck_call_get_user_data (GAsyncResult *async_result)
+{
+	g_return_val_if_fail (GCK_IS_CALL (async_result), NULL);
+	return GCK_CALL (async_result)->user_data;
+}
+
+static GObject*
+_gck_call_get_source_object (GAsyncResult *async_result)
+{
+	g_return_val_if_fail (GCK_IS_CALL (async_result), NULL);
+	return GCK_CALL (async_result)->object;
+}
+
+static void
+_gck_call_implement_async_result (GAsyncResultIface *iface)
+{
+	iface->get_user_data = _gck_call_get_user_data;
+	iface->get_source_object = _gck_call_get_source_object;
+}
+
+static void
+_gck_call_class_init (GckCallClass *klass)
+{
+	GObjectClass *gobject_class = (GObjectClass*)klass;
+
+	_gck_call_parent_class = g_type_class_peek_parent (klass);
+	gobject_class->finalize = _gck_call_finalize;
+}
+
+static void
+_gck_call_base_init (GckCallClass *klass)
+{
+	GckCallSource *source;
+	GMainContext *context;
+	GError *err = NULL;
+
+	klass->thread_pool = g_thread_pool_new ((GFunc)process_async_call, klass, 16, FALSE, &err);
+	if (!klass->thread_pool) {
+		g_critical ("couldn't create thread pool: %s",
+		            err && err->message ? err->message : "");
+		return;
+	}
+
+	klass->completed_queue = g_async_queue_new_full (g_object_unref);
+	g_assert (klass->completed_queue);
+
+	context = g_main_context_default ();
+	g_assert (context);
+
+	/* Add our idle handler which processes other tasks */
+	source = (GckCallSource*)g_source_new (&completed_functions, sizeof (GckCallSource));
+	source->klass = klass;
+	klass->completed_id = g_source_attach ((GSource*)source, context);
+	g_source_set_callback ((GSource*)source, NULL, NULL, NULL);
+	g_source_unref ((GSource*)source);
+}
+
+static void
+_gck_call_base_finalize (GckCallClass *klass)
+{
+	GMainContext *context;
+	GSource *src;
+
+	if (klass->thread_pool) {
+		g_assert (g_thread_pool_unprocessed (klass->thread_pool) == 0);
+		g_thread_pool_free (klass->thread_pool, FALSE, TRUE);
+		klass->thread_pool = NULL;
+	}
+
+	if (klass->completed_id) {
+		context = g_main_context_default ();
+		g_return_if_fail (context);
+
+		src = g_main_context_find_source_by_id (context, klass->completed_id);
+		g_assert (src);
+		g_source_destroy (src);
+		klass->completed_id = 0;
+	}
+
+	if (klass->completed_queue) {
+		g_assert (g_async_queue_length (klass->completed_queue));
+		g_async_queue_unref (klass->completed_queue);
+		klass->completed_queue = NULL;
+	}
+}
+
+GType
+_gck_call_get_type (void)
+{
+	static volatile gsize type_id__volatile = 0;
+
+	if (g_once_init_enter (&type_id__volatile)) {
+
+		static const GTypeInfo type_info = {
+			sizeof (GckCallClass),
+			(GBaseInitFunc)_gck_call_base_init,
+			(GBaseFinalizeFunc)_gck_call_base_finalize,
+			(GClassInitFunc)_gck_call_class_init,
+			(GClassFinalizeFunc)NULL,
+			NULL,   // class_data
+			sizeof (GckCall),
+			0,      // n_preallocs
+			(GInstanceInitFunc)_gck_call_init,
+		};
+
+		static const GInterfaceInfo interface_info = {
+			(GInterfaceInitFunc)_gck_call_implement_async_result
+		};
+
+		GType type_id = g_type_register_static (G_TYPE_OBJECT, "_GckCall", &type_info, 0);
+		g_type_add_interface_static (type_id, G_TYPE_ASYNC_RESULT, &interface_info);
+
+		g_once_init_leave (&type_id__volatile, type_id);
+	}
+
+	return type_id__volatile;
+}
+
+/* ----------------------------------------------------------------------------
+ * PUBLIC
+ */
+
+void
+_gck_call_uninitialize (void)
+{
+
+}
+
+gboolean
+_gck_call_sync (gpointer object, gpointer perform, gpointer complete,
+                 gpointer data, GCancellable *cancellable, GError **err)
+{
+	GckArguments *args = (GckArguments*)data;
+	GckModule *module = NULL;
+	CK_RV rv;
+
+	g_assert (G_IS_OBJECT (object));
+	g_assert (perform);
+	g_assert (args);
+
+	g_object_get (object, "module", &module, "handle", &args->handle, NULL);
+	g_assert (GCK_IS_MODULE (module));
+
+	/* We now hold a reference to module until below */
+	args->pkcs11 = gck_module_get_functions (module);
+	g_assert (args->pkcs11);
+
+	do {
+		rv = perform_call (perform, cancellable, args);
+		if (rv == CKR_FUNCTION_CANCELED)
+			break;
+
+	} while (!complete_call (complete, args, rv));
+
+	g_object_unref (module);
+
+	if (rv == CKR_OK)
+		return TRUE;
+
+	g_set_error (err, GCK_ERROR, rv, "%s", gck_message_from_rv (rv));
+	return FALSE;
+}
+
+gpointer
+_gck_call_async_prep (gpointer object, gpointer cb_object, gpointer perform,
+                       gpointer complete, gsize args_size, gpointer destroy)
+{
+	GckArguments *args;
+	GckCall *call;
+
+	g_assert (!object || G_IS_OBJECT (object));
+	g_assert (perform);
+
+	if (!destroy)
+		destroy = g_free;
+
+	if (args_size == 0)
+		args_size = sizeof (GckArguments);
+	g_assert (args_size >= sizeof (GckArguments));
+
+	args = g_malloc0 (args_size);
+	call = g_object_new (GCK_TYPE_CALL, NULL);
+	call->destroy = (GDestroyNotify)destroy;
+	call->perform = (GckPerformFunc)perform;
+	call->complete = (GckCompleteFunc)complete;
+	call->object = cb_object;
+	g_object_ref (cb_object);
+
+	/* Hook the two together */
+	call->args = args;
+	call->args->call = call;
+
+	/* Setup call object if available */
+	if (object != NULL)
+		_gck_call_async_object (call, object);
+
+	return args;
+}
+
+void
+_gck_call_async_object (GckCall *call, gpointer object)
+{
+	g_assert (GCK_IS_CALL (call));
+	g_assert (call->args);
+
+	if (call->module)
+		g_object_unref (call->module);
+	call->module = NULL;
+
+	g_object_get (object, "module", &call->module, "handle", &call->args->handle, NULL);
+	g_assert (GCK_IS_MODULE (call->module));
+	call->args->pkcs11 = gck_module_get_functions (call->module);
+
+	/* We now hold a reference on module until finalize */
+}
+
+GckCall*
+_gck_call_async_ready (gpointer data, GCancellable *cancellable,
+                        GAsyncReadyCallback callback, gpointer user_data)
+{
+	GckArguments *args = (GckArguments*)data;
+	g_assert (GCK_IS_CALL (args->call));
+
+	args->call->cancellable = cancellable;
+	if (cancellable) {
+		g_assert (G_IS_CANCELLABLE (cancellable));
+		g_object_ref (cancellable);
+	}
+
+	args->call->callback = callback;
+	args->call->user_data = user_data;
+
+	return args->call;
+}
+
+void
+_gck_call_async_go (GckCall *call)
+{
+	g_assert (GCK_IS_CALL (call));
+	g_assert (call->args->pkcs11);
+
+	/* To keep things balanced, process at one completed event */
+	process_completed(GCK_CALL_GET_CLASS (call));
+
+	g_assert (GCK_CALL_GET_CLASS (call)->thread_pool);
+	g_thread_pool_push (GCK_CALL_GET_CLASS (call)->thread_pool, call, NULL);
+}
+
+void
+_gck_call_async_ready_go (gpointer data, GCancellable *cancellable,
+                           GAsyncReadyCallback callback, gpointer user_data)
+{
+	GckCall *call = _gck_call_async_ready (data, cancellable, callback, user_data);
+	_gck_call_async_go (call);
+}
+
+gboolean
+_gck_call_basic_finish (GAsyncResult *result, GError **err)
+{
+	CK_RV rv;
+
+	g_return_val_if_fail (GCK_IS_CALL (result), FALSE);
+
+	rv = GCK_CALL (result)->rv;
+	if (rv == CKR_OK)
+		return TRUE;
+
+	g_set_error (err, GCK_ERROR, rv, "%s", gck_message_from_rv (rv));
+	return FALSE;
+}
+
+void
+_gck_call_async_short (GckCall *call, CK_RV rv)
+{
+	g_assert (GCK_IS_CALL (call));
+
+	call->rv = rv;
+
+	/* Already complete, so just push it for processing in main loop */
+	g_assert (GCK_CALL_GET_CLASS (call)->completed_queue);
+	g_async_queue_push (GCK_CALL_GET_CLASS (call)->completed_queue, call);
+	g_main_context_wakeup (NULL);
+}
+
+gpointer
+_gck_call_get_arguments (GckCall *call)
+{
+	g_assert (GCK_IS_CALL (call));
+	return call->args;
+}