gio/gdbusauthmechanismanon.c

   1 /* GDBus - GLib D-Bus Library
   2  *
   3  * Copyright (C) 2008-2010 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 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, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  *
  20  * Author: David Zeuthen <davidz@redhat.com>
  21  */
  22
  23 #include "config.h"
  24
  25 #include "gdbusauthmechanismanon.h"
  26 #include "gdbuserror.h"
  27 #include "gioenumtypes.h"
  28
  29 #include "glibintl.h"
  30
  31 struct _GDBusAuthMechanismAnonPrivate
  32 {
  33   gboolean is_client;
  34   gboolean is_server;
  35   GDBusAuthMechanismState state;
  36 };
  37
  38 static gint                     mechanism_get_priority              (void);
  39 static const gchar             *mechanism_get_name                  (void);
  40
  41 static gboolean                 mechanism_is_supported              (GDBusAuthMechanism   *mechanism);
  42 static gchar                   *mechanism_encode_data               (GDBusAuthMechanism   *mechanism,
  43                                                                      const gchar          *data,
  44                                                                      gsize                 data_len,
  45                                                                      gsize                *out_data_len);
  46 static gchar                   *mechanism_decode_data               (GDBusAuthMechanism   *mechanism,
  47                                                                      const gchar          *data,
  48                                                                      gsize                 data_len,
  49                                                                      gsize                *out_data_len);
  50 static GDBusAuthMechanismState  mechanism_server_get_state          (GDBusAuthMechanism   *mechanism);
  51 static void                     mechanism_server_initiate           (GDBusAuthMechanism   *mechanism,
  52                                                                      const gchar          *initial_response,
  53                                                                      gsize                 initial_response_len);
  54 static void                     mechanism_server_data_receive       (GDBusAuthMechanism   *mechanism,
  55                                                                      const gchar          *data,
  56                                                                      gsize                 data_len);
  57 static gchar                   *mechanism_server_data_send          (GDBusAuthMechanism   *mechanism,
  58                                                                      gsize                *out_data_len);
  59 static gchar                   *mechanism_server_get_reject_reason  (GDBusAuthMechanism   *mechanism);
  60 static void                     mechanism_server_shutdown           (GDBusAuthMechanism   *mechanism);
  61 static GDBusAuthMechanismState  mechanism_client_get_state          (GDBusAuthMechanism   *mechanism);
  62 static gchar                   *mechanism_client_initiate           (GDBusAuthMechanism   *mechanism,
  63                                                                      gsize                *out_initial_response_len);
  64 static void                     mechanism_client_data_receive       (GDBusAuthMechanism   *mechanism,
  65                                                                      const gchar          *data,
  66                                                                      gsize                 data_len);
  67 static gchar                   *mechanism_client_data_send          (GDBusAuthMechanism   *mechanism,
  68                                                                      gsize                *out_data_len);
  69 static void                     mechanism_client_shutdown           (GDBusAuthMechanism   *mechanism);
  70
  71 /* ---------------------------------------------------------------------------------------------------- */
  72
  73 G_DEFINE_TYPE (GDBusAuthMechanismAnon, _g_dbus_auth_mechanism_anon, G_TYPE_DBUS_AUTH_MECHANISM);
  74
  75 /* ---------------------------------------------------------------------------------------------------- */
  76
  77 static void
  78 _g_dbus_auth_mechanism_anon_finalize (GObject *object)
  79 {
  80   //GDBusAuthMechanismAnon *mechanism = G_DBUS_AUTH_MECHANISM_ANON (object);
  81
  82   if (G_OBJECT_CLASS (_g_dbus_auth_mechanism_anon_parent_class)->finalize != NULL)
  83     G_OBJECT_CLASS (_g_dbus_auth_mechanism_anon_parent_class)->finalize (object);
  84 }
  85
  86 static void
  87 _g_dbus_auth_mechanism_anon_class_init (GDBusAuthMechanismAnonClass *klass)
  88 {
  89   GObjectClass *gobject_class;
  90   GDBusAuthMechanismClass *mechanism_class;
  91
  92   g_type_class_add_private (klass, sizeof (GDBusAuthMechanismAnonPrivate));
  93
  94   gobject_class = G_OBJECT_CLASS (klass);
  95   gobject_class->finalize = _g_dbus_auth_mechanism_anon_finalize;
  96
  97   mechanism_class = G_DBUS_AUTH_MECHANISM_CLASS (klass);
  98   mechanism_class->get_priority              = mechanism_get_priority;
  99   mechanism_class->get_name                  = mechanism_get_name;
 100   mechanism_class->is_supported              = mechanism_is_supported;
 101   mechanism_class->encode_data               = mechanism_encode_data;
 102   mechanism_class->decode_data               = mechanism_decode_data;
 103   mechanism_class->server_get_state          = mechanism_server_get_state;
 104   mechanism_class->server_initiate           = mechanism_server_initiate;
 105   mechanism_class->server_data_receive       = mechanism_server_data_receive;
 106   mechanism_class->server_data_send          = mechanism_server_data_send;
 107   mechanism_class->server_get_reject_reason  = mechanism_server_get_reject_reason;
 108   mechanism_class->server_shutdown           = mechanism_server_shutdown;
 109   mechanism_class->client_get_state          = mechanism_client_get_state;
 110   mechanism_class->client_initiate           = mechanism_client_initiate;
 111   mechanism_class->client_data_receive       = mechanism_client_data_receive;
 112   mechanism_class->client_data_send          = mechanism_client_data_send;
 113   mechanism_class->client_shutdown           = mechanism_client_shutdown;
 114 }
 115
 116 static void
 117 _g_dbus_auth_mechanism_anon_init (GDBusAuthMechanismAnon *mechanism)
 118 {
 119   mechanism->priv = G_TYPE_INSTANCE_GET_PRIVATE (mechanism,
 120                                                  G_TYPE_DBUS_AUTH_MECHANISM_ANON,
 121                                                  GDBusAuthMechanismAnonPrivate);
 122 }
 123
 124 /* ---------------------------------------------------------------------------------------------------- */
 125
 126
 127 static gint
 128 mechanism_get_priority (void)
 129 {
 130   /* We prefer ANONYMOUS to most other mechanism (such as DBUS_COOKIE_SHA1) but not to EXTERNAL */
 131   return 50;
 132 }
 133
 134
 135 static const gchar *
 136 mechanism_get_name (void)
 137 {
 138   return "ANONYMOUS";
 139 }
 140
 141 static gboolean
 142 mechanism_is_supported (GDBusAuthMechanism *mechanism)
 143 {
 144   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), FALSE);
 145   return TRUE;
 146 }
 147
 148 static gchar *
 149 mechanism_encode_data (GDBusAuthMechanism   *mechanism,
 150                        const gchar          *data,
 151                        gsize                 data_len,
 152                        gsize                *out_data_len)
 153 {
 154   return NULL;
 155 }
 156
 157
 158 static gchar *
 159 mechanism_decode_data (GDBusAuthMechanism   *mechanism,
 160                        const gchar          *data,
 161                        gsize                 data_len,
 162                        gsize                *out_data_len)
 163 {
 164   return NULL;
 165 }
 166
 167 /* ---------------------------------------------------------------------------------------------------- */
 168
 169 static GDBusAuthMechanismState
 170 mechanism_server_get_state (GDBusAuthMechanism   *mechanism)
 171 {
 172   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 173
 174   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), G_DBUS_AUTH_MECHANISM_STATE_INVALID);
 175   g_return_val_if_fail (m->priv->is_server && !m->priv->is_client, G_DBUS_AUTH_MECHANISM_STATE_INVALID);
 176
 177   return m->priv->state;
 178 }
 179
 180 static void
 181 mechanism_server_initiate (GDBusAuthMechanism   *mechanism,
 182                            const gchar          *initial_response,
 183                            gsize                 initial_response_len)
 184 {
 185   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 186
 187   g_return_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism));
 188   g_return_if_fail (!m->priv->is_server && !m->priv->is_client);
 189
 190   //g_debug ("ANONYMOUS: initial_response was `%s'", initial_response);
 191
 192   m->priv->is_server = TRUE;
 193   m->priv->state = G_DBUS_AUTH_MECHANISM_STATE_ACCEPTED;
 194 }
 195
 196 static void
 197 mechanism_server_data_receive (GDBusAuthMechanism   *mechanism,
 198                                const gchar          *data,
 199                                gsize                 data_len)
 200 {
 201   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 202
 203   g_return_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism));
 204   g_return_if_fail (m->priv->is_server && !m->priv->is_client);
 205   g_return_if_fail (m->priv->state == G_DBUS_AUTH_MECHANISM_STATE_WAITING_FOR_DATA);
 206
 207   /* can never end up here because we are never in the WAITING_FOR_DATA state */
 208   g_assert_not_reached ();
 209 }
 210
 211 static gchar *
 212 mechanism_server_data_send (GDBusAuthMechanism   *mechanism,
 213                             gsize                *out_data_len)
 214 {
 215   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 216
 217   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), NULL);
 218   g_return_val_if_fail (m->priv->is_server && !m->priv->is_client, NULL);
 219   g_return_val_if_fail (m->priv->state == G_DBUS_AUTH_MECHANISM_STATE_HAVE_DATA_TO_SEND, NULL);
 220
 221   /* can never end up here because we are never in the HAVE_DATA_TO_SEND state */
 222   g_assert_not_reached ();
 223
 224   return NULL;
 225 }
 226
 227 static gchar *
 228 mechanism_server_get_reject_reason (GDBusAuthMechanism   *mechanism)
 229 {
 230   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 231
 232   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), NULL);
 233   g_return_val_if_fail (m->priv->is_server && !m->priv->is_client, NULL);
 234   g_return_val_if_fail (m->priv->state == G_DBUS_AUTH_MECHANISM_STATE_REJECTED, NULL);
 235
 236   /* can never end up here because we are never in the REJECTED state */
 237   g_assert_not_reached ();
 238
 239   return NULL;
 240 }
 241
 242 static void
 243 mechanism_server_shutdown (GDBusAuthMechanism   *mechanism)
 244 {
 245   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 246
 247   g_return_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism));
 248   g_return_if_fail (m->priv->is_server && !m->priv->is_client);
 249
 250   m->priv->is_server = FALSE;
 251 }
 252
 253 /* ---------------------------------------------------------------------------------------------------- */
 254
 255 static GDBusAuthMechanismState
 256 mechanism_client_get_state (GDBusAuthMechanism   *mechanism)
 257 {
 258   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 259
 260   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), G_DBUS_AUTH_MECHANISM_STATE_INVALID);
 261   g_return_val_if_fail (m->priv->is_client && !m->priv->is_server, G_DBUS_AUTH_MECHANISM_STATE_INVALID);
 262
 263   return m->priv->state;
 264 }
 265
 266 static gchar *
 267 mechanism_client_initiate (GDBusAuthMechanism   *mechanism,
 268                            gsize                *out_initial_response_len)
 269 {
 270   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 271
 272   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), NULL);
 273   g_return_val_if_fail (!m->priv->is_server && !m->priv->is_client, NULL);
 274
 275   m->priv->is_client = TRUE;
 276   m->priv->state = G_DBUS_AUTH_MECHANISM_STATE_ACCEPTED;
 277
 278   *out_initial_response_len = -1;
 279
 280   /* just return our library name and version */
 281   return g_strdup ("GDBus 0.1");
 282 }
 283
 284 static void
 285 mechanism_client_data_receive (GDBusAuthMechanism   *mechanism,
 286                                const gchar          *data,
 287                                gsize                 data_len)
 288 {
 289   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 290
 291   g_return_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism));
 292   g_return_if_fail (m->priv->is_client && !m->priv->is_server);
 293   g_return_if_fail (m->priv->state == G_DBUS_AUTH_MECHANISM_STATE_WAITING_FOR_DATA);
 294
 295   /* can never end up here because we are never in the WAITING_FOR_DATA state */
 296   g_assert_not_reached ();
 297 }
 298
 299 static gchar *
 300 mechanism_client_data_send (GDBusAuthMechanism   *mechanism,
 301                             gsize                *out_data_len)
 302 {
 303   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 304
 305   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), NULL);
 306   g_return_val_if_fail (m->priv->is_client && !m->priv->is_server, NULL);
 307   g_return_val_if_fail (m->priv->state == G_DBUS_AUTH_MECHANISM_STATE_HAVE_DATA_TO_SEND, NULL);
 308
 309   /* can never end up here because we are never in the HAVE_DATA_TO_SEND state */
 310   g_assert_not_reached ();
 311
 312   return NULL;
 313 }
 314
 315 static void
 316 mechanism_client_shutdown (GDBusAuthMechanism   *mechanism)
 317 {
 318   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 319
 320   g_return_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism));
 321   g_return_if_fail (m->priv->is_client && !m->priv->is_server);
 322
 323   m->priv->is_client = FALSE;
 324 }
 325
 326 /* ---------------------------------------------------------------------------------------------------- */