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/*
* gnome-keyring
*
* Copyright (C) 2011 Collabora Ltd.
*
* This program 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 program 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 program; if not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Stef Walter <stefw@collabora.co.uk>
*/
#include "config.h"
#include "gkd-secret-exchange.h"
#include "gkd-secret-secret.h"
#include "gkd-secret-service.h"
#include "gkd-secret-session.h"
#include <gcr/gcr-base.h>
#include <glib/gi18n.h>
#include <string.h>
enum {
PROP_0,
PROP_CALLER,
PROP_SERVICE,
};
struct _GkdSecretExchange {
GcrSecretExchange parent;
gchar *caller;
GkdSecretService *service;
GkdSecretSession *session;
GkdSecretSecret *last_secret;
};
struct _GkdSecretExchangeClass {
GcrSecretExchangeClass parent_class;
};
G_DEFINE_TYPE (GkdSecretExchange, gkd_secret_exchange, GCR_TYPE_SECRET_EXCHANGE);
static void
gkd_secret_exchange_init (GkdSecretExchange *self)
{
}
static void
gkd_secret_exchange_set_property (GObject *obj,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GkdSecretExchange *self = GKD_SECRET_EXCHANGE (obj);
switch (prop_id) {
case PROP_CALLER:
g_return_if_fail (!self->caller);
self->caller = g_value_dup_string (value);
break;
case PROP_SERVICE:
g_return_if_fail (!self->service);
self->service = g_value_get_object (value);
g_return_if_fail (self->service);
g_object_add_weak_pointer (G_OBJECT (self->service),
(gpointer*)&(self->service));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, prop_id, pspec);
break;
}
}
static void
gkd_secret_exchange_get_property (GObject *obj,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GkdSecretExchange *self = GKD_SECRET_EXCHANGE (obj);
switch (prop_id) {
case PROP_CALLER:
g_value_set_string (value, self->caller);
break;
case PROP_SERVICE:
g_value_set_object (value, self->service);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, prop_id, pspec);
break;
}
}
static void
gkd_secret_exchange_finalize (GObject *obj)
{
GkdSecretExchange *self = GKD_SECRET_EXCHANGE (obj);
if (self->service) {
g_object_remove_weak_pointer (G_OBJECT (self->service),
(gpointer*)&(self->service));
self->service = NULL;
}
g_clear_object (&self->session);
gkd_secret_secret_free (self->last_secret);
g_free (self->caller);
G_OBJECT_CLASS (gkd_secret_exchange_parent_class)->finalize (obj);
}
static gboolean
gkd_secret_exchange_generate_exchange_key (GcrSecretExchange *exchange,
const gchar *scheme,
guchar **public_key,
gsize *n_public_key)
{
GkdSecretExchange *self = GKD_SECRET_EXCHANGE (exchange);
g_return_val_if_fail (self->service != NULL, FALSE);
g_clear_object (&self->session);
self->session = gkd_secret_session_new (self->service, self->caller);
*public_key = gkd_secret_session_begin (self->session,
"ietf-ike-grp-modp-1536",
n_public_key);
return (*public_key != NULL) ? TRUE : FALSE;
}
static gboolean
gkd_secret_exchange_derive_transport_key (GcrSecretExchange *exchange,
const guchar *peer,
gsize n_peer)
{
GkdSecretExchange *self = GKD_SECRET_EXCHANGE (exchange);
return gkd_secret_session_complete (self->session, peer, n_peer);
}
static gboolean
gkd_secret_exchange_encrypt_transport_data (GcrSecretExchange *exchange,
GckAllocator allocator,
const guchar *plain_text,
gsize n_plain_text,
guchar **parameter,
gsize *n_parameter,
guchar **cipher_text,
gsize *n_cipher_text)
{
g_warning ("Not implemented: a GkdSecretExchange was used to encrypt a secret");
return FALSE;
}
static gboolean
gkd_secret_exchange_decrypt_transport_data (GcrSecretExchange *exchange,
GckAllocator allocator,
const guchar *cipher_text,
gsize n_cipher_text,
const guchar *parameter,
gsize n_parameter,
guchar **plain_text,
gsize *n_plain_text)
{
GkdSecretExchange *self = GKD_SECRET_EXCHANGE (exchange);
gkd_secret_secret_free (self->last_secret);
self->last_secret = gkd_secret_secret_new (self->session,
parameter, n_parameter,
cipher_text, n_cipher_text);
*plain_text = NULL;
*n_plain_text = 0;
return TRUE;
}
static void
gkd_secret_exchange_class_init (GkdSecretExchangeClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GcrSecretExchangeClass *exchange_class = GCR_SECRET_EXCHANGE_CLASS (klass);
gobject_class->finalize = gkd_secret_exchange_finalize;
gobject_class->get_property = gkd_secret_exchange_get_property;
gobject_class->set_property = gkd_secret_exchange_set_property;
exchange_class->generate_exchange_key = gkd_secret_exchange_generate_exchange_key;
exchange_class->derive_transport_key = gkd_secret_exchange_derive_transport_key;
exchange_class->encrypt_transport_data = gkd_secret_exchange_encrypt_transport_data;
exchange_class->decrypt_transport_data = gkd_secret_exchange_decrypt_transport_data;
g_object_class_install_property (gobject_class, PROP_CALLER,
g_param_spec_string ("caller", "Caller", "DBus caller name",
NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY ));
g_object_class_install_property (gobject_class, PROP_SERVICE,
g_param_spec_object ("service", "Service", "Service which owns this session",
GKD_SECRET_TYPE_SERVICE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
}
GkdSecretExchange *
gkd_secret_exchange_new (GkdSecretService *service,
const gchar *caller)
{
return g_object_new (GKD_TYPE_SECRET_EXCHANGE,
"service", service,
"caller", caller,
NULL);
}
GkdSecretSecret *
gkd_secret_exchange_take_last_secret (GkdSecretExchange *self)
{
GkdSecretSecret *secret;
g_return_val_if_fail (GKD_IS_SECRET_EXCHANGE (self), NULL);
secret = self->last_secret;
self->last_secret = NULL;
return secret;
}
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