client/manager.c

   1 /*
   2  *
   3  *  OBEX Client
   4  *
   5  *  Copyright (C) 2007-2010  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21  *
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <signal.h>
  32 #include <syslog.h>
  33
  34 #include <glib.h>
  35 #include <gdbus.h>
  36
  37 #include "log.h"
  38 #include "transfer.h"
  39 #include "session.h"
  40 #include "manager.h"
  41 #include "bluetooth.h"
  42 #include "opp.h"
  43 #include "ftp.h"
  44 #include "pbap.h"
  45 #include "sync.h"
  46 #include "map.h"
  47
  48 #define CLIENT_SERVICE          "org.bluez.obex.client"
  49
  50 #define CLIENT_INTERFACE        "org.bluez.obex.Client"
  51 #define ERROR_INTERFACE         "org.bluez.obex.Error"
  52 #define CLIENT_PATH             "/"
  53
  54 struct send_data {
  55         DBusConnection *connection;
  56         DBusMessage *message;
  57 };
  58
  59 static GSList *sessions = NULL;
  60
  61 static void shutdown_session(struct obc_session *session)
  62 {
  63         sessions = g_slist_remove(sessions, session);
  64         obc_session_shutdown(session);
  65         obc_session_unref(session);
  66 }
  67
  68 static void unregister_session(void *data)
  69 {
  70         struct obc_session *session = data;
  71
  72         if (g_slist_find(sessions, session) == NULL)
  73                 return;
  74
  75         sessions = g_slist_remove(sessions, session);
  76         obc_session_unref(session);
  77 }
  78
  79 static void create_callback(struct obc_session *session,
  80                                                 struct obc_transfer *transfer,
  81                                                 GError *err, void *user_data)
  82 {
  83         struct send_data *data = user_data;
  84         const char *path;
  85
  86         if (err != NULL) {
  87                 DBusMessage *error = g_dbus_create_error(data->message,
  88                                         ERROR_INTERFACE ".Failed",
  89                                         "%s", err->message);
  90                 g_dbus_send_message(data->connection, error);
  91                 shutdown_session(session);
  92                 goto done;
  93         }
  94
  95
  96         path = obc_session_register(session, unregister_session);
  97
  98         g_dbus_send_reply(data->connection, data->message,
  99                                 DBUS_TYPE_OBJECT_PATH, &path,
 100                                 DBUS_TYPE_INVALID);
 101
 102 done:
 103         dbus_message_unref(data->message);
 104         dbus_connection_unref(data->connection);
 105         g_free(data);
 106 }
 107
 108 static int parse_device_dict(DBusMessageIter *iter,
 109                 const char **source, const char **target, uint8_t *channel)
 110 {
 111         while (dbus_message_iter_get_arg_type(iter) == DBUS_TYPE_DICT_ENTRY) {
 112                 DBusMessageIter entry, value;
 113                 const char *key;
 114
 115                 dbus_message_iter_recurse(iter, &entry);
 116                 dbus_message_iter_get_basic(&entry, &key);
 117
 118                 dbus_message_iter_next(&entry);
 119                 dbus_message_iter_recurse(&entry, &value);
 120
 121                 switch (dbus_message_iter_get_arg_type(&value)) {
 122                 case DBUS_TYPE_STRING:
 123                         if (g_str_equal(key, "Source") == TRUE)
 124                                 dbus_message_iter_get_basic(&value, source);
 125                         else if (g_str_equal(key, "Target") == TRUE)
 126                                 dbus_message_iter_get_basic(&value, target);
 127                         break;
 128                 case DBUS_TYPE_BYTE:
 129                         if (g_str_equal(key, "Channel") == TRUE)
 130                                 dbus_message_iter_get_basic(&value, channel);
 131                         break;
 132                 }
 133
 134                 dbus_message_iter_next(iter);
 135         }
 136
 137         return 0;
 138 }
 139
 140 static struct obc_session *find_session(const char *path)
 141 {
 142         GSList *l;
 143
 144         for (l = sessions; l; l = l->next) {
 145                 struct obc_session *session = l->data;
 146
 147                 if (g_str_equal(obc_session_get_path(session), path) == TRUE)
 148                         return session;
 149         }
 150
 151         return NULL;
 152 }
 153
 154 static DBusMessage *create_session(DBusConnection *connection,
 155                                         DBusMessage *message, void *user_data)
 156 {
 157         DBusMessageIter iter, dict;
 158         struct obc_session *session;
 159         struct send_data *data;
 160         const char *source = NULL, *dest = NULL, *target = NULL;
 161         uint8_t channel = 0;
 162
 163         dbus_message_iter_init(message, &iter);
 164         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
 165                 return g_dbus_create_error(message,
 166                                 ERROR_INTERFACE ".InvalidArguments", NULL);
 167
 168         dbus_message_iter_get_basic(&iter, &dest);
 169         dbus_message_iter_next(&iter);
 170
 171         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY)
 172                 return g_dbus_create_error(message,
 173                                 ERROR_INTERFACE ".InvalidArguments", NULL);
 174
 175         dbus_message_iter_recurse(&iter, &dict);
 176
 177         parse_device_dict(&dict, &source, &target, &channel);
 178         if (dest == NULL || target == NULL)
 179                 return g_dbus_create_error(message,
 180                                 ERROR_INTERFACE ".InvalidArguments", NULL);
 181
 182         data = g_try_malloc0(sizeof(*data));
 183         if (data == NULL)
 184                 return g_dbus_create_error(message,
 185                                 ERROR_INTERFACE ".Error.NoMemory", NULL);
 186
 187         data->connection = dbus_connection_ref(connection);
 188         data->message = dbus_message_ref(message);
 189
 190         session = obc_session_create(source, dest, target, channel,
 191                                         dbus_message_get_sender(message),
 192                                         create_callback, data);
 193         if (session != NULL) {
 194                 sessions = g_slist_append(sessions, session);
 195                 return NULL;
 196         }
 197
 198         dbus_message_unref(data->message);
 199         dbus_connection_unref(data->connection);
 200         g_free(data);
 201
 202         return g_dbus_create_error(message, ERROR_INTERFACE ".Failed", NULL);
 203 }
 204
 205 static DBusMessage *remove_session(DBusConnection *connection,
 206                                 DBusMessage *message, void *user_data)
 207 {
 208         struct obc_session *session;
 209         const gchar *sender, *path;
 210
 211         if (dbus_message_get_args(message, NULL,
 212                         DBUS_TYPE_OBJECT_PATH, &path,
 213                         DBUS_TYPE_INVALID) == FALSE)
 214                 return g_dbus_create_error(message,
 215                                 ERROR_INTERFACE ".InvalidArguments", NULL);
 216
 217         session = find_session(path);
 218         if (session == NULL)
 219                 return g_dbus_create_error(message,
 220                                 ERROR_INTERFACE ".InvalidArguments", NULL);
 221
 222         sender = dbus_message_get_sender(message);
 223         if (g_str_equal(sender, obc_session_get_owner(session)) == FALSE)
 224                 return g_dbus_create_error(message,
 225                                 ERROR_INTERFACE ".NotAuthorized",
 226                                 "Not Authorized");
 227
 228         shutdown_session(session);
 229
 230         return dbus_message_new_method_return(message);
 231 }
 232
 233 static const GDBusMethodTable client_methods[] = {
 234         { GDBUS_ASYNC_METHOD("CreateSession",
 235                         GDBUS_ARGS({ "destination", "s" }, { "args", "a{sv}" }),
 236                         GDBUS_ARGS({ "session", "o" }), create_session) },
 237         { GDBUS_ASYNC_METHOD("RemoveSession",
 238                         GDBUS_ARGS({ "session", "o" }), NULL, remove_session) },
 239         { }
 240 };
 241
 242 static DBusConnection *conn = NULL;
 243
 244 static struct obc_module {
 245         const char *name;
 246         int (*init) (void);
 247         void (*exit) (void);
 248 } modules[] = {
 249         { "bluetooth", bluetooth_init, bluetooth_exit },
 250         { "opp", opp_init, opp_exit },
 251         { "ftp", ftp_init, ftp_exit },
 252         { "pbap", pbap_init, pbap_exit },
 253         { "sync", sync_init, sync_exit },
 254         { "map", map_init, map_exit },
 255         { }
 256 };
 257
 258 int manager_init(void)
 259 {
 260         DBusError derr;
 261         struct obc_module *module;
 262
 263         dbus_error_init(&derr);
 264
 265         conn = g_dbus_setup_bus(DBUS_BUS_SESSION, CLIENT_SERVICE, &derr);
 266         if (dbus_error_is_set(&derr) == TRUE) {
 267                 error("%s: %s", derr.name, derr.message);
 268                 dbus_error_free(&derr);
 269                 return -1;
 270         }
 271
 272         if (g_dbus_register_interface(conn, CLIENT_PATH, CLIENT_INTERFACE,
 273                                                 client_methods, NULL, NULL,
 274                                                         NULL, NULL) == FALSE) {
 275                 error("Can't register client interface");
 276                 dbus_connection_unref(conn);
 277                 conn = NULL;
 278                 return -1;
 279         }
 280
 281         for (module = modules; module && module->init; module++) {
 282                 if (module->init() < 0)
 283                         continue;
 284
 285                 DBG("Module %s loaded", module->name);
 286         }
 287
 288         return 0;
 289 }
 290
 291 void manager_exit(void)
 292 {
 293         struct obc_module *module;
 294
 295         if (conn == NULL)
 296                 return;
 297
 298         for (module = modules; module && module->exit; module++)
 299                 module->exit();
 300
 301         g_dbus_unregister_interface(conn, CLIENT_PATH, CLIENT_INTERFACE);
 302         dbus_connection_unref(conn);
 303 }