Blame gfbgraph/gfbgraph-goa-authorizer.c

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/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8; tab-width: 8 -*-  */
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/*
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 * libgfbgraph - GObject library for Facebook Graph API
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 * Copyright (C) 2013 Álvaro Peña <alvaropg@gmail.com>
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 *
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 * GFBGraph is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * GFBGraph is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with GFBGraph.  If not, see <http://www.gnu.org/licenses/>.
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 */
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/**
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 * SECTION:gfbgraph-goa-authorizer
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 * @short_description: GFBGraph GOA authorization interface
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 * @stability: Unstable
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 * @include: gfbgraph/gfbgraph.h
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 *
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 * #GFBGraphGoaAuthorizer provides an implementation of the #GFBGraphAuthorizer interface
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 * for authorization using GNOME Online Accounts (GOA).
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 **/
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#include "gfbgraph-authorizer.h"
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#include "gfbgraph-goa-authorizer.h"
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enum {
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        PROP_O,
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        PROP_GOA_OBJECT
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};
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struct _GFBGraphGoaAuthorizerPrivate {
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        GMutex mutex;
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        GoaObject *goa_object;
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        gchar *access_token;
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};
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static void gfbgraph_goa_authorizer_class_init            (GFBGraphGoaAuthorizerClass *klass);
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static void gfbgraph_goa_authorizer_init                  (GFBGraphGoaAuthorizer *object);
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static void gfbgraph_goa_authorizer_finalize              (GObject *object);
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static void gfbgraph_goa_authorizer_dispose               (GObject *object);
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static void gfbgraph_goa_authorizer_set_property          (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void gfbgraph_goa_authorizer_get_property          (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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static void gfbgraph_goa_authorizer_iface_init            (GFBGraphAuthorizerInterface *iface);
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void        gfbgraph_goa_authorizer_process_call          (GFBGraphAuthorizer *iface, RestProxyCall *call);
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void        gfbgraph_goa_authorizer_process_message       (GFBGraphAuthorizer *iface, SoupMessage *message);
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gboolean    gfbgraph_goa_authorizer_refresh_authorization (GFBGraphAuthorizer *iface, GCancellable *cancellable, GError **error);
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static void gfbgraph_goa_authorizer_set_goa_object        (GFBGraphGoaAuthorizer *self, GoaObject *goa_object);
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#define GFBGRAPH_GOA_AUTHORIZER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE((o), GFBGRAPH_TYPE_GOA_AUTHORIZER, GFBGraphGoaAuthorizerPrivate))
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static GObjectClass *parent_class = NULL;
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G_DEFINE_TYPE_WITH_CODE (GFBGraphGoaAuthorizer, gfbgraph_goa_authorizer, G_TYPE_OBJECT,
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                         G_IMPLEMENT_INTERFACE (GFBGRAPH_TYPE_AUTHORIZER, gfbgraph_goa_authorizer_iface_init));
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static void
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gfbgraph_goa_authorizer_class_init (GFBGraphGoaAuthorizerClass *klass)
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{
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        GObjectClass *gobject_class;
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        gobject_class = (GObjectClass*) klass;
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        parent_class            = g_type_class_peek_parent (klass);
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        gobject_class->finalize = gfbgraph_goa_authorizer_finalize;
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        gobject_class->get_property = gfbgraph_goa_authorizer_get_property;
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        gobject_class->set_property = gfbgraph_goa_authorizer_set_property;
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        gobject_class->dispose = gfbgraph_goa_authorizer_dispose;
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        /**
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         * GFBGraphGoaAuthorizer:goa-object:
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         *
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         * The GOA account providing authentication.
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         *
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         **/
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        g_object_class_install_property (gobject_class,
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                                         PROP_GOA_OBJECT,
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                                         g_param_spec_object ("goa-object",
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                                                              "GoaObject",
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                                                              "The GOA account to authenticate.",
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                                                              GOA_TYPE_OBJECT,
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                                                              G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE));
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        g_type_class_add_private (gobject_class, sizeof(GFBGraphGoaAuthorizerPrivate));
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}
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static void
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gfbgraph_goa_authorizer_init (GFBGraphGoaAuthorizer *object)
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{
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        object->priv = GFBGRAPH_GOA_AUTHORIZER_GET_PRIVATE(object);
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        g_mutex_init (&object->priv->mutex);
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}
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static void
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gfbgraph_goa_authorizer_finalize (GObject *object)
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{
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        G_OBJECT_CLASS(parent_class)->finalize (object);
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}
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static void
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gfbgraph_goa_authorizer_dispose (GObject *object)
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{
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        GFBGraphGoaAuthorizerPrivate *priv;
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        priv = GFBGRAPH_GOA_AUTHORIZER_GET_PRIVATE (object);
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        g_clear_object (&priv->goa_object);
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        G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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static void
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gfbgraph_goa_authorizer_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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        switch (prop_id) {
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                case PROP_GOA_OBJECT:
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                        gfbgraph_goa_authorizer_set_goa_object (GFBGRAPH_GOA_AUTHORIZER (object), GOA_OBJECT (g_value_get_object (value)));
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                        break;
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                default:
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                        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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                        break;
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        }
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}
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static void
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gfbgraph_goa_authorizer_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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        GFBGraphGoaAuthorizerPrivate *priv;
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        priv = GFBGRAPH_GOA_AUTHORIZER_GET_PRIVATE (object);
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        switch (prop_id) {
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                case PROP_GOA_OBJECT:
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                        g_value_set_object (value, priv->goa_object);
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                        break;
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                default:
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                        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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                        break;
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        }
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}
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static void
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gfbgraph_goa_authorizer_iface_init (GFBGraphAuthorizerInterface *iface)
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{
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        iface->process_call = gfbgraph_goa_authorizer_process_call;
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        iface->process_message = gfbgraph_goa_authorizer_process_message;
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        iface->refresh_authorization = gfbgraph_goa_authorizer_refresh_authorization;
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}
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void
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gfbgraph_goa_authorizer_process_call (GFBGraphAuthorizer *iface, RestProxyCall *call)
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{
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        GFBGraphGoaAuthorizerPrivate *priv = GFBGRAPH_GOA_AUTHORIZER_GET_PRIVATE (GFBGRAPH_GOA_AUTHORIZER (iface));
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        g_mutex_lock (&priv->mutex);
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        if (priv->access_token != NULL)
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                rest_proxy_call_add_param (call, "access_token", priv->access_token);
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        g_mutex_unlock (&priv->mutex);
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}
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void
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gfbgraph_goa_authorizer_process_message (GFBGraphAuthorizer *iface, SoupMessage *message)
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{
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        gchar *auth_value;
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        SoupURI *uri;
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        GFBGraphGoaAuthorizerPrivate *priv;
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        priv = GFBGRAPH_GOA_AUTHORIZER_GET_PRIVATE (GFBGRAPH_GOA_AUTHORIZER (iface));
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        g_mutex_lock (&priv->mutex);
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        uri = soup_message_get_uri (message);
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        auth_value = g_strconcat ("access_token=", priv->access_token, NULL);
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        soup_uri_set_query (uri, auth_value);
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        g_free (auth_value);
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        g_mutex_unlock (&priv->mutex);
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}
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gboolean
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gfbgraph_goa_authorizer_refresh_authorization (GFBGraphAuthorizer *iface, GCancellable *cancellable, GError **error)
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{
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        GFBGraphGoaAuthorizerPrivate *priv;
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        GoaAccount *account;
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        GoaOAuth2Based *oauth2_based;
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        gboolean ret_val;
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        priv = GFBGRAPH_GOA_AUTHORIZER_GET_PRIVATE (GFBGRAPH_GOA_AUTHORIZER (iface));
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        ret_val = FALSE;
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        g_mutex_lock (&priv->mutex);
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        g_free (priv->access_token);
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        priv->access_token = NULL;
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        account = goa_object_peek_account (priv->goa_object);
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        oauth2_based = goa_object_peek_oauth2_based (priv->goa_object);
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        if (goa_account_call_ensure_credentials_sync (account, NULL, cancellable, error))
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                if (goa_oauth2_based_call_get_access_token_sync (oauth2_based, &priv->access_token, NULL, cancellable, error))
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                        ret_val = TRUE;
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        g_mutex_unlock (&priv->mutex);
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        return ret_val;
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}
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static void
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gfbgraph_goa_authorizer_set_goa_object (GFBGraphGoaAuthorizer *self, GoaObject *goa_object)
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{
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        GoaAccount *account;
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        GoaOAuth2Based *oauth2_based;
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        GFBGraphGoaAuthorizerPrivate *priv;
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        g_return_if_fail (GOA_IS_OBJECT (goa_object));
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        priv = GFBGRAPH_GOA_AUTHORIZER_GET_PRIVATE (self);
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        oauth2_based = goa_object_peek_oauth2_based (goa_object);
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        g_return_if_fail (oauth2_based != NULL && GOA_IS_OAUTH2_BASED (oauth2_based));
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        account = goa_object_peek_account (goa_object);
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        g_return_if_fail (account != NULL && GOA_IS_ACCOUNT (account));
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        g_object_ref (goa_object);
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        priv->goa_object = goa_object;
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}
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/**
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 * gfbgraph_goa_authorizer_new:
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 * @goa_object: A #GoaObject representing a Facebook account.
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 *
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 * Creates a new #GFBGraphGoaAuthorizer using @goa_object as account.
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 *
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 * Returns: (transfer full): A new #GFBGraphGoaAuthorizer. Use g_object_unref() to free it.
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 */
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GFBGraphGoaAuthorizer*
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gfbgraph_goa_authorizer_new (GoaObject *goa_object)
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{
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        return GFBGRAPH_GOA_AUTHORIZER (g_object_new (GFBGRAPH_TYPE_GOA_AUTHORIZER, "goa-object", goa_object, NULL));
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}