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_WITH_PRIVATE (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   gobject_class = G_OBJECT_CLASS (klass);
  93   gobject_class->finalize = _g_dbus_auth_mechanism_anon_finalize;
  94
  95   mechanism_class = G_DBUS_AUTH_MECHANISM_CLASS (klass);
  96   mechanism_class->get_priority              = mechanism_get_priority;
  97   mechanism_class->get_name                  = mechanism_get_name;
  98   mechanism_class->is_supported              = mechanism_is_supported;
  99   mechanism_class->encode_data               = mechanism_encode_data;
 100   mechanism_class->decode_data               = mechanism_decode_data;
 101   mechanism_class->server_get_state          = mechanism_server_get_state;
 102   mechanism_class->server_initiate           = mechanism_server_initiate;
 103   mechanism_class->server_data_receive       = mechanism_server_data_receive;
 104   mechanism_class->server_data_send          = mechanism_server_data_send;
 105   mechanism_class->server_get_reject_reason  = mechanism_server_get_reject_reason;
 106   mechanism_class->server_shutdown           = mechanism_server_shutdown;
 107   mechanism_class->client_get_state          = mechanism_client_get_state;
 108   mechanism_class->client_initiate           = mechanism_client_initiate;
 109   mechanism_class->client_data_receive       = mechanism_client_data_receive;
 110   mechanism_class->client_data_send          = mechanism_client_data_send;
 111   mechanism_class->client_shutdown           = mechanism_client_shutdown;
 112 }
 113
 114 static void
 115 _g_dbus_auth_mechanism_anon_init (GDBusAuthMechanismAnon *mechanism)
 116 {
 117   mechanism->priv = _g_dbus_auth_mechanism_anon_get_private (mechanism);
 118 }
 119
 120 /* ---------------------------------------------------------------------------------------------------- */
 121
 122
 123 static gint
 124 mechanism_get_priority (void)
 125 {
 126   /* We prefer ANONYMOUS to most other mechanism (such as DBUS_COOKIE_SHA1) but not to EXTERNAL */
 127   return 50;
 128 }
 129
 130
 131 static const gchar *
 132 mechanism_get_name (void)
 133 {
 134   return "ANONYMOUS";
 135 }
 136
 137 static gboolean
 138 mechanism_is_supported (GDBusAuthMechanism *mechanism)
 139 {
 140   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), FALSE);
 141   return TRUE;
 142 }
 143
 144 static gchar *
 145 mechanism_encode_data (GDBusAuthMechanism   *mechanism,
 146                        const gchar          *data,
 147                        gsize                 data_len,
 148                        gsize                *out_data_len)
 149 {
 150   return NULL;
 151 }
 152
 153
 154 static gchar *
 155 mechanism_decode_data (GDBusAuthMechanism   *mechanism,
 156                        const gchar          *data,
 157                        gsize                 data_len,
 158                        gsize                *out_data_len)
 159 {
 160   return NULL;
 161 }
 162
 163 /* ---------------------------------------------------------------------------------------------------- */
 164
 165 static GDBusAuthMechanismState
 166 mechanism_server_get_state (GDBusAuthMechanism   *mechanism)
 167 {
 168   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 169
 170   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), G_DBUS_AUTH_MECHANISM_STATE_INVALID);
 171   g_return_val_if_fail (m->priv->is_server && !m->priv->is_client, G_DBUS_AUTH_MECHANISM_STATE_INVALID);
 172
 173   return m->priv->state;
 174 }
 175
 176 static void
 177 mechanism_server_initiate (GDBusAuthMechanism   *mechanism,
 178                            const gchar          *initial_response,
 179                            gsize                 initial_response_len)
 180 {
 181   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 182
 183   g_return_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism));
 184   g_return_if_fail (!m->priv->is_server && !m->priv->is_client);
 185
 186   //g_debug ("ANONYMOUS: initial_response was '%s'", initial_response);
 187
 188   m->priv->is_server = TRUE;
 189   m->priv->state = G_DBUS_AUTH_MECHANISM_STATE_ACCEPTED;
 190 }
 191
 192 static void
 193 mechanism_server_data_receive (GDBusAuthMechanism   *mechanism,
 194                                const gchar          *data,
 195                                gsize                 data_len)
 196 {
 197   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 198
 199   g_return_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism));
 200   g_return_if_fail (m->priv->is_server && !m->priv->is_client);
 201   g_return_if_fail (m->priv->state == G_DBUS_AUTH_MECHANISM_STATE_WAITING_FOR_DATA);
 202
 203   /* can never end up here because we are never in the WAITING_FOR_DATA state */
 204   g_assert_not_reached ();
 205 }
 206
 207 static gchar *
 208 mechanism_server_data_send (GDBusAuthMechanism   *mechanism,
 209                             gsize                *out_data_len)
 210 {
 211   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 212
 213   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), NULL);
 214   g_return_val_if_fail (m->priv->is_server && !m->priv->is_client, NULL);
 215   g_return_val_if_fail (m->priv->state == G_DBUS_AUTH_MECHANISM_STATE_HAVE_DATA_TO_SEND, NULL);
 216
 217   /* can never end up here because we are never in the HAVE_DATA_TO_SEND state */
 218   g_assert_not_reached ();
 219
 220   return NULL;
 221 }
 222
 223 static gchar *
 224 mechanism_server_get_reject_reason (GDBusAuthMechanism   *mechanism)
 225 {
 226   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 227
 228   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), NULL);
 229   g_return_val_if_fail (m->priv->is_server && !m->priv->is_client, NULL);
 230   g_return_val_if_fail (m->priv->state == G_DBUS_AUTH_MECHANISM_STATE_REJECTED, NULL);
 231
 232   /* can never end up here because we are never in the REJECTED state */
 233   g_assert_not_reached ();
 234
 235   return NULL;
 236 }
 237
 238 static void
 239 mechanism_server_shutdown (GDBusAuthMechanism   *mechanism)
 240 {
 241   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 242
 243   g_return_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism));
 244   g_return_if_fail (m->priv->is_server && !m->priv->is_client);
 245
 246   m->priv->is_server = FALSE;
 247 }
 248
 249 /* ---------------------------------------------------------------------------------------------------- */
 250
 251 static GDBusAuthMechanismState
 252 mechanism_client_get_state (GDBusAuthMechanism   *mechanism)
 253 {
 254   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 255
 256   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), G_DBUS_AUTH_MECHANISM_STATE_INVALID);
 257   g_return_val_if_fail (m->priv->is_client && !m->priv->is_server, G_DBUS_AUTH_MECHANISM_STATE_INVALID);
 258
 259   return m->priv->state;
 260 }
 261
 262 static gchar *
 263 mechanism_client_initiate (GDBusAuthMechanism   *mechanism,
 264                            gsize                *out_initial_response_len)
 265 {
 266   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 267
 268   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), NULL);
 269   g_return_val_if_fail (!m->priv->is_server && !m->priv->is_client, NULL);
 270
 271   m->priv->is_client = TRUE;
 272   m->priv->state = G_DBUS_AUTH_MECHANISM_STATE_ACCEPTED;
 273
 274   *out_initial_response_len = -1;
 275
 276   /* just return our library name and version */
 277   return g_strdup ("GDBus 0.1");
 278 }
 279
 280 static void
 281 mechanism_client_data_receive (GDBusAuthMechanism   *mechanism,
 282                                const gchar          *data,
 283                                gsize                 data_len)
 284 {
 285   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 286
 287   g_return_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism));
 288   g_return_if_fail (m->priv->is_client && !m->priv->is_server);
 289   g_return_if_fail (m->priv->state == G_DBUS_AUTH_MECHANISM_STATE_WAITING_FOR_DATA);
 290
 291   /* can never end up here because we are never in the WAITING_FOR_DATA state */
 292   g_assert_not_reached ();
 293 }
 294
 295 static gchar *
 296 mechanism_client_data_send (GDBusAuthMechanism   *mechanism,
 297                             gsize                *out_data_len)
 298 {
 299   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 300
 301   g_return_val_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism), NULL);
 302   g_return_val_if_fail (m->priv->is_client && !m->priv->is_server, NULL);
 303   g_return_val_if_fail (m->priv->state == G_DBUS_AUTH_MECHANISM_STATE_HAVE_DATA_TO_SEND, NULL);
 304
 305   /* can never end up here because we are never in the HAVE_DATA_TO_SEND state */
 306   g_assert_not_reached ();
 307
 308   return NULL;
 309 }
 310
 311 static void
 312 mechanism_client_shutdown (GDBusAuthMechanism   *mechanism)
 313 {
 314   GDBusAuthMechanismAnon *m = G_DBUS_AUTH_MECHANISM_ANON (mechanism);
 315
 316   g_return_if_fail (G_IS_DBUS_AUTH_MECHANISM_ANON (mechanism));
 317   g_return_if_fail (m->priv->is_client && !m->priv->is_server);
 318
 319   m->priv->is_client = FALSE;
 320 }
 321
 322 /* ---------------------------------------------------------------------------------------------------- */