gio/gproxyresolverportal.c

   1 /* GIO - GLib Input, Output and Streaming Library
   2  *
   3  * Copyright 2016 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this library; if not, see
  17  * <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "config.h"
  21
  22 #include "xdp-dbus.h"
  23 #include "giomodule-priv.h"
  24 #include "gportalsupport.h"
  25 #include "gproxyresolverportal.h"
  26
  27 struct _GProxyResolverPortal {
  28   GObject parent_instance;
  29
  30   GXdpProxyResolver *resolver;
  31   gboolean network_available;
  32 };
  33
  34 static void g_proxy_resolver_portal_iface_init (GProxyResolverInterface *iface);
  35
  36 G_DEFINE_TYPE_WITH_CODE (GProxyResolverPortal, g_proxy_resolver_portal, G_TYPE_OBJECT,
  37                          G_IMPLEMENT_INTERFACE (G_TYPE_PROXY_RESOLVER,
  38                                                 g_proxy_resolver_portal_iface_init)
  39                          _g_io_modules_ensure_extension_points_registered ();
  40                          g_io_extension_point_implement (G_PROXY_RESOLVER_EXTENSION_POINT_NAME,
  41                                                          g_define_type_id,
  42                                                          "portal",
  43                                                          90))
  44
  45 static void
  46 g_proxy_resolver_portal_init (GProxyResolverPortal *resolver)
  47 {
  48   resolver->resolver = gxdp_proxy_resolver_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
  49                                                                    G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
  50                                                                    "org.freedesktop.portal.Desktop",
  51                                                                    "/org/freedesktop/portal/desktop",
  52                                                                    NULL,
  53                                                                    NULL);
  54
  55   resolver->network_available = glib_network_available_in_sandbox ();
  56 }
  57
  58 static gboolean
  59 g_proxy_resolver_portal_is_supported (GProxyResolver *object)
  60 {
  61   GProxyResolverPortal *resolver = G_PROXY_RESOLVER_PORTAL (object);
  62   char *name_owner;
  63   gboolean has_portal;
  64
  65   if (!glib_should_use_portal () || !resolver->resolver)
  66     return FALSE;
  67
  68   name_owner = g_dbus_proxy_get_name_owner (G_DBUS_PROXY (resolver->resolver));
  69   has_portal = name_owner != NULL;
  70   g_free (name_owner);
  71
  72   return has_portal;
  73 }
  74
  75 static const char *no_proxy[2] = { "direct://", NULL };
  76
  77 static gchar **
  78 g_proxy_resolver_portal_lookup (GProxyResolver *proxy_resolver,
  79                                 const gchar     *uri,
  80                                 GCancellable    *cancellable,
  81                                 GError         **error)
  82 {
  83   GProxyResolverPortal *resolver = G_PROXY_RESOLVER_PORTAL (proxy_resolver);
  84   char **proxy = NULL;
  85
  86   if (!gxdp_proxy_resolver_call_lookup_sync (resolver->resolver,
  87                                              uri,
  88                                              &proxy,
  89                                              cancellable,
  90                                              error))
  91     return NULL;
  92
  93   if (!resolver->network_available)
  94     {
  95       g_strfreev (proxy);
  96       proxy = g_strdupv ((gchar **)no_proxy);
  97     }
  98
  99   return proxy;
 100 }
 101
 102 static void
 103 lookup_done (GObject      *source,
 104              GAsyncResult *result,
 105              gpointer      data)
 106 {
 107   GTask *task = data;
 108   GError *error = NULL;
 109   gchar **proxies = NULL;
 110
 111   if (!gxdp_proxy_resolver_call_lookup_finish (GXDP_PROXY_RESOLVER (source),
 112                                                &proxies,
 113                                                result,
 114                                                &error))
 115     g_task_return_error (task, error);
 116   else
 117     g_task_return_pointer (task, proxies, NULL);
 118
 119   g_object_unref (task);
 120 }
 121
 122 static void
 123 g_proxy_resolver_portal_lookup_async (GProxyResolver      *proxy_resolver,
 124                                       const gchar         *uri,
 125                                       GCancellable        *cancellable,
 126                                       GAsyncReadyCallback  callback,
 127                                       gpointer             user_data)
 128 {
 129   GProxyResolverPortal *resolver = G_PROXY_RESOLVER_PORTAL (proxy_resolver);
 130   GTask *task;
 131
 132   task = g_task_new (proxy_resolver, cancellable, callback, user_data);
 133   gxdp_proxy_resolver_call_lookup (resolver->resolver,
 134                                    uri,
 135                                    cancellable,
 136                                    lookup_done,
 137                                    g_object_ref (task));
 138   g_object_unref (task);
 139 }
 140
 141 static gchar **
 142 g_proxy_resolver_portal_lookup_finish (GProxyResolver  *proxy_resolver,
 143                                        GAsyncResult    *result,
 144                                        GError         **error)
 145 {
 146   GProxyResolverPortal *resolver = G_PROXY_RESOLVER_PORTAL (proxy_resolver);
 147   GTask *task = G_TASK (result);
 148   char **proxies;
 149
 150   proxies = g_task_propagate_pointer (task, error);
 151   if (proxies == NULL)
 152     return NULL;
 153
 154   if (!resolver->network_available)
 155     {
 156       g_strfreev (proxies);
 157       proxies = g_strdupv ((gchar **)no_proxy);
 158     }
 159
 160   return proxies;
 161 }
 162
 163 static void
 164 g_proxy_resolver_portal_finalize (GObject *object)
 165 {
 166   GProxyResolverPortal *resolver = G_PROXY_RESOLVER_PORTAL (object);
 167
 168   g_clear_object (&resolver->resolver);
 169
 170   G_OBJECT_CLASS (g_proxy_resolver_portal_parent_class)->finalize (object);
 171 }
 172
 173 static void
 174 g_proxy_resolver_portal_class_init (GProxyResolverPortalClass *resolver_class)
 175 {
 176   GObjectClass *object_class;
 177
 178   object_class = G_OBJECT_CLASS (resolver_class);
 179   object_class->finalize = g_proxy_resolver_portal_finalize;
 180 }
 181
 182 static void
 183 g_proxy_resolver_portal_iface_init (GProxyResolverInterface *iface)
 184 {
 185   iface->is_supported = g_proxy_resolver_portal_is_supported;
 186   iface->lookup = g_proxy_resolver_portal_lookup;
 187   iface->lookup_async = g_proxy_resolver_portal_lookup_async;
 188   iface->lookup_finish = g_proxy_resolver_portal_lookup_finish;
 189 }