src/iface.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <string.h>
  27
  28 #include <glib.h>
  29 #include <gdbus.h>
  30
  31 #include <hal/libhal.h>
  32
  33 #include "connman.h"
  34
  35 static GSList *drivers = NULL;
  36
  37 int connman_iface_register(struct connman_iface_driver *driver)
  38 {
  39         DBG("driver %p", driver);
  40
  41         drivers = g_slist_append(drivers, driver);
  42
  43         return 0;
  44 }
  45
  46 void connman_iface_unregister(struct connman_iface_driver *driver)
  47 {
  48         DBG("driver %p", driver);
  49
  50         drivers = g_slist_remove(drivers, driver);
  51 }
  52
  53 static GSList *interfaces = NULL;
  54
  55 static void device_free(void *data)
  56 {
  57         struct connman_iface *iface = data;
  58
  59         DBG("iface %p", iface);
  60
  61         if (iface->driver && iface->driver->remove)
  62                 iface->driver->remove(iface);
  63
  64         g_free(iface->path);
  65         g_free(iface->udi);
  66         g_free(iface->sysfs);
  67         g_free(iface);
  68 }
  69
  70 static int probe_device(LibHalContext *ctx,
  71                         struct connman_iface_driver *driver, const char *udi)
  72 {
  73         DBusConnection *conn;
  74         struct connman_iface *iface;
  75         char *temp, *sysfs;
  76         int err;
  77
  78         DBG("ctx %p driver %p udi %s", ctx, driver, udi);
  79
  80         if (!driver->probe)
  81                 return -1;
  82
  83         iface = g_try_new0(struct connman_iface, 1);
  84         if (iface == NULL)
  85                 return -1;
  86
  87         temp = g_path_get_basename(udi);
  88         iface->path = g_strdup_printf("%s/%s", CONNMAN_IFACE_BASEPATH, temp);
  89         g_free(temp);
  90
  91         iface->udi = g_strdup(udi);
  92
  93         DBG("path %s", iface->path);
  94
  95         sysfs = libhal_device_get_property_string(ctx, udi,
  96                                                 "linux.sysfs_path", NULL);
  97         if (sysfs != NULL)
  98                 iface->sysfs = g_strdup(sysfs);
  99
 100         iface->type = CONNMAN_IFACE_TYPE_UNKNOWN;
 101         iface->flags = 0;
 102
 103         DBG("iface %p", iface);
 104
 105         err = driver->probe(iface);
 106         if (err < 0) {
 107                 device_free(iface);
 108                 return -1;
 109         }
 110
 111         iface->driver = driver;
 112
 113         conn = libhal_ctx_get_dbus_connection(ctx);
 114
 115         g_dbus_register_object(conn, iface->path, iface, device_free);
 116
 117         interfaces = g_slist_append(interfaces, iface);
 118
 119         return 0;
 120 }
 121
 122 static void device_added(LibHalContext *ctx, const char *udi)
 123 {
 124         GSList *list;
 125
 126         DBG("ctx %p udi %s", ctx, udi);
 127
 128         for (list = drivers; list; list = list->next) {
 129                 struct connman_iface_driver *driver = list->data;
 130
 131                 if (driver->capability == NULL)
 132                         continue;
 133
 134                 if (libhal_device_query_capability(ctx, udi,
 135                                         driver->capability, NULL) == TRUE) {
 136                         if (probe_device(ctx, driver, udi) == 0)
 137                                 break;
 138                 }
 139         }
 140 }
 141
 142 static void device_removed(LibHalContext *ctx, const char *udi)
 143 {
 144         DBusConnection *conn;
 145         GSList *list;
 146
 147         DBG("ctx %p udi %s", ctx, udi);
 148
 149         conn = libhal_ctx_get_dbus_connection(ctx);
 150
 151         for (list = interfaces; list; list = list->next) {
 152                 struct connman_iface *iface = list->data;
 153
 154                 if (strcmp(udi, iface->udi) == 0) {
 155                         interfaces = g_slist_remove(interfaces, iface);
 156                         g_dbus_unregister_object(conn, iface->path);
 157                         break;
 158                 }
 159         }
 160 }
 161
 162 static void probe_driver(LibHalContext *ctx,
 163                                 struct connman_iface_driver *driver)
 164 {
 165         char **list;
 166         int num;
 167
 168         DBG("ctx %p driver %p", ctx, driver);
 169
 170         list = libhal_find_device_by_capability(ctx,
 171                                         driver->capability, &num, NULL);
 172         if (list) {
 173                 char **tmp = list;
 174
 175                 while (*tmp) {
 176                         probe_device(ctx, driver, *tmp);
 177                         tmp++;
 178                 }
 179
 180                 libhal_free_string_array(list);
 181         }
 182 }
 183
 184 static void find_devices(LibHalContext *ctx)
 185 {
 186         GSList *list;
 187
 188         DBG("ctx %p", ctx);
 189
 190         for (list = drivers; list; list = list->next) {
 191                 struct connman_iface_driver *driver = list->data;
 192
 193                 DBG("driver %p", driver);
 194
 195                 if (driver->capability == NULL)
 196                         continue;
 197
 198                 probe_driver(ctx, driver);
 199         }
 200 }
 201
 202 static LibHalContext *hal_ctx = NULL;
 203
 204 static void hal_init(void *data)
 205 {
 206         DBusConnection *conn = data;
 207
 208         DBG("conn %p", conn);
 209
 210         if (hal_ctx != NULL)
 211                 return;
 212
 213         hal_ctx = libhal_ctx_new();
 214         if (hal_ctx == NULL)
 215                 return;
 216
 217         if (libhal_ctx_set_dbus_connection(hal_ctx, conn) == FALSE) {
 218                 libhal_ctx_free(hal_ctx);
 219                 return;
 220         }
 221
 222         if (libhal_ctx_init(hal_ctx, NULL) == FALSE) {
 223                 libhal_ctx_free(hal_ctx);
 224                 return ;
 225         }
 226
 227         libhal_ctx_set_device_added(hal_ctx, device_added);
 228         libhal_ctx_set_device_removed(hal_ctx, device_removed);
 229
 230         //libhal_ctx_set_device_new_capability(hal_ctx, new_capability);
 231         //libhal_ctx_set_device_lost_capability(hal_ctx, lost_capability);
 232
 233         find_devices(hal_ctx);
 234 }
 235
 236 static void hal_cleanup(void *data)
 237 {
 238         DBusConnection *conn = data;
 239         GSList *list;
 240
 241         DBG("conn %p", conn);
 242
 243         if (hal_ctx == NULL)
 244                 return;
 245
 246         for (list = interfaces; list; list = list->next) {
 247                 struct connman_iface *iface = list->data;
 248
 249                 DBG("path %s", iface->path);
 250
 251                 g_dbus_unregister_object(conn, iface->path);
 252         }
 253
 254         g_slist_free(interfaces);
 255
 256         interfaces = NULL;
 257
 258         libhal_ctx_shutdown(hal_ctx, NULL);
 259
 260         libhal_ctx_free(hal_ctx);
 261
 262         hal_ctx = NULL;
 263 }
 264
 265 static DBusConnection *connection = NULL;
 266 static guint hal_watch = 0;
 267
 268 int __connman_iface_init(DBusConnection *conn)
 269 {
 270         DBG("conn %p", conn);
 271
 272         connection = dbus_connection_ref(conn);
 273         if (connection == NULL)
 274                 return -1;
 275
 276         hal_init(connection);
 277
 278         hal_watch = g_dbus_add_watch(connection, "org.freedesktop.Hal",
 279                                 hal_init, hal_cleanup, connection, NULL);
 280
 281         return 0;
 282 }
 283
 284 void __connman_iface_cleanup(void)
 285 {
 286         DBG("conn %p", connection);
 287
 288         g_dbus_remove_watch(connection, hal_watch);
 289
 290         hal_cleanup(connection);
 291
 292         dbus_connection_unref(connection);
 293 }