src/wifi-tdls.c

   1 /*
   2  * Network Configuration Module
   3  *
   4  * Copyright (c) 2012-2013 Samsung Electronics Co., Ltd. All rights reserved.
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  * http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *
  18  */
  19
  20 #include <stdio.h>
  21 #include <time.h>
  22 #include <stdlib.h>
  23 #include <sys/time.h>
  24 #include <unistd.h>
  25 #include <string.h>
  26 #include "neterror.h"
  27 #include "netdbus.h"
  28 #include "netsupplicant.h"
  29 #include "network-state.h"
  30 #include <vconf.h>
  31 #include <vconf-keys.h>
  32 #include <arpa/inet.h>
  33 #include <log.h>
  34 #include "util.h"
  35 #include "neterror.h"
  36 #include "wifi-tdls.h"
  37 #include <glib.h>
  38
  39 char *peer_mac = NULL;
  40 int is_connected = 0;
  41 static gint tdls_timer_id = 0;
  42 int is_discover_broadcast = 0;
  43 int is_timer_expired = 0;
  44
  45 #define TDLS_DISCOVER_TIMOUT 4 /*TDLS Unicast Discovery Timeout*/
  46 #define TDLS_DISCOVER_BROADCAST_TIMOUT 8 /*TDLS Broadcast Discovery Timeout*/
  47 static void stop_tdls_timer()
  48 {
  49         if (tdls_timer_id > 0) {
  50                 g_source_remove(tdls_timer_id);
  51                 tdls_timer_id = 0;
  52         }
  53 }
  54
  55 void __netconfig_wifi_notify_tdls_event(const char *sig_name, const char *peer_mac)
  56 {
  57         GVariantBuilder *builder;
  58         GVariant *params;
  59         builder = g_variant_builder_new(G_VARIANT_TYPE("a{sv}"));
  60         g_variant_builder_add(builder, "{sv}", "peermac", g_variant_new_string(peer_mac));
  61
  62         params = g_variant_new("(@a{sv})", g_variant_builder_end(builder));
  63         g_variant_builder_unref(builder);
  64
  65         netconfig_dbus_emit_signal(NULL,
  66                                 NETCONFIG_WIFI_PATH,
  67                                 NETCONFIG_WIFI_INTERFACE,
  68                                 sig_name,
  69                                 params);
  70
  71         INFO("Sent signal (%s) Peer Mac (%s)", sig_name, peer_mac);
  72 }
  73
  74 void __netconfig_wifi_notify_tdls_discover_event(const char *peer_mac, int discover_type)
  75 {
  76         GVariantBuilder *builder;
  77         GVariant *params;
  78         builder = g_variant_builder_new(G_VARIANT_TYPE("a{sv}"));
  79
  80         g_variant_builder_add(builder, "{sv}", "peermac", g_variant_new_string(peer_mac));
  81         g_variant_builder_add(builder, "{sv}", "discover_type", g_variant_new_int32(discover_type));
  82
  83         params = g_variant_new("(@a{sv})", g_variant_builder_end(builder));
  84         g_variant_builder_unref(builder);
  85
  86         netconfig_dbus_emit_signal(NULL,
  87                                 NETCONFIG_WIFI_PATH,
  88                                 NETCONFIG_WIFI_INTERFACE,
  89                                 "TDLSPeerFound",
  90                                 params);
  91
  92         INFO("Sent signal (%s) Peer Mac (%s)", "TDLSPeerFound", peer_mac);
  93 }
  94
  95 static gboolean _tdls_timer_discover_event(gpointer user_data)
  96 {
  97
  98         if (tdls_timer_id == 0)
  99                 return FALSE;
 100
 101         INFO("[TDLS Discover Timer Expired");
 102         __netconfig_wifi_notify_tdls_discover_event("00:00:00:00:00:00", is_discover_broadcast);
 103         is_discover_broadcast = 0;
 104         stop_tdls_timer();
 105         is_timer_expired = 1;
 106
 107         return FALSE;
 108 }
 109
 110 static GVariant * __netconfig_wifi_tdls_send_dbus_str(const char* method, const char *str)
 111 {
 112         GVariant *message = NULL;
 113         char *if_path = NULL;
 114         GVariant *params = NULL;
 115
 116         if_path = netconfig_wifi_get_supplicant_interface();
 117         if (if_path == NULL) {
 118                 ERR("Fail to get wpa_supplicant DBus path");
 119                 return NULL;
 120         }
 121
 122         params = g_variant_new("(s)", str);
 123         INFO("[TizenMW-->WPAS]Sent Dbus Method :[%s],value[%s]", method, str);
 124         message = netconfig_invoke_dbus_method(SUPPLICANT_SERVICE,
 125                         if_path, SUPPLICANT_INTERFACE ".Interface", method, params);
 126
 127         g_free(if_path);
 128         INFO("TDLS Returned from Blocking method for Send DBUS Command");
 129         return message;
 130 }
 131
 132 gboolean handle_tdls_connect(Wifi *wifi, GDBusMethodInvocation *context,
 133                         gchar *peer_mac_Addr)
 134 {
 135         DBG("[TizenMW-->WPAS]: TDLS Setup Request: [%s]", peer_mac_Addr);
 136
 137         if (is_connected) {
 138                 ERR(" Already TDLS Connection !!!");
 139         } else {
 140                 GVariant *message = NULL;
 141                 message = __netconfig_wifi_tdls_send_dbus_str("TDLSSetup", (const char*)peer_mac_Addr);
 142
 143                 if (message == NULL) {
 144                         ERR(" TDLS : failed to connect !!!");
 145                         netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_INTERNAL, "FailTdlsConnect");
 146                         return TRUE;
 147                 }
 148
 149                 DBG("[TizenMW<--WPAS] TDLS DBUS Command sent successfully");
 150                 g_variant_unref(message);
 151                 is_connected = 1;
 152         }
 153
 154         wifi_complete_tdls_connect(wifi, context, 1);
 155         return TRUE;
 156 }
 157
 158 gboolean handle_tdls_discover(Wifi *wifi, GDBusMethodInvocation *context,
 159                         gchar *peer_mac_Addr)
 160 {
 161         DBG("TDLS Discover Request: [%s]", peer_mac_Addr);
 162         int discover_timeout = 0;
 163
 164         GVariant *message = NULL;
 165
 166         if (tdls_timer_id > 0) {
 167                 DBG(" TDLS Discover is already progress !!!");
 168                 wifi_complete_tdls_discover(wifi, context, NETCONFIG_ERROR_TDLS_ALREADY_DONE);
 169                 return TRUE;
 170         }
 171
 172         message = __netconfig_wifi_tdls_send_dbus_str("TDLSDiscover", (const char*)peer_mac_Addr);
 173
 174         if (message == NULL) {
 175                 ERR(" TDLS : failed to discover !!!");
 176                 netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_INTERNAL, "FailTdlsDiscover");
 177                 wifi_complete_tdls_discover(wifi, context, NETCONFIG_ERROR_TDLS_FAIL_DISCOVER);
 178                 return TRUE;
 179         }
 180
 181         DBG(" TDLS DBUS Command sent successfully");
 182         g_variant_unref(message);
 183
 184         if (NULL != strstr(peer_mac_Addr, "ff:ff:ff:ff:ff:ff")) {
 185                 DBG("TDLS: Broadcast Discovery");
 186                 is_discover_broadcast = 1;
 187                 discover_timeout = TDLS_DISCOVER_BROADCAST_TIMOUT;
 188         } else {
 189                 is_discover_broadcast = 0;
 190                 discover_timeout = TDLS_DISCOVER_TIMOUT;
 191         }
 192
 193         is_timer_expired = 0;
 194         tdls_timer_id = g_timeout_add_seconds(discover_timeout,
 195                                         _tdls_timer_discover_event, NULL);
 196
 197         wifi_complete_tdls_discover(wifi, context, NETCONFIG_ERROR_TDLS_NO_ERROR);
 198         return TRUE;
 199 }
 200
 201 gboolean handle_tdls_disconnect(Wifi *wifi, GDBusMethodInvocation *context,
 202                         gchar *peer_mac_Addr)
 203 {
 204         DBG("[TizenMW-->WPAS]: TDLS Teardown Request: [%s]", peer_mac_Addr);
 205
 206         if (!is_connected) {
 207                 ERR(" Already TDLS disconnection !!!");
 208                 wifi_complete_tdls_disconnect(wifi, context, NETCONFIG_ERROR_TDLS_ALREADY_DONE);
 209         } else {
 210                 GVariant *message = NULL;
 211                 message = __netconfig_wifi_tdls_send_dbus_str("TDLSTeardown", (const char*)peer_mac_Addr);
 212
 213                 if (message == NULL) {
 214                         ERR(" TDLS : failed to disconnect !!!");
 215                         netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_INTERNAL, "FailTdlsDisconnect");
 216                         return TRUE;
 217                 }
 218
 219                 DBG("[TizenMW<--WPAS] TDLS DBUS Command sent successfully");
 220                 g_variant_unref(message);
 221                 is_connected = 0;
 222         }
 223
 224         wifi_complete_tdls_disconnect(wifi, context, NETCONFIG_ERROR_TDLS_NO_ERROR);
 225         return TRUE;
 226 }
 227
 228 gboolean handle_tdls_connected_peer(Wifi *wifi, GDBusMethodInvocation *context)
 229 {
 230         DBG("[TizenMW-->WPAS]: TDLS Connected Peer Request: ");
 231
 232         GVariant *message = NULL;
 233         const gchar* reply_str = NULL;
 234
 235         if (peer_mac == NULL) {
 236                 INFO("TDLS: No Active Connection");
 237                 wifi_complete_tdls_connected_peer(wifi, context, "00.00.00.00.00.00");
 238                 return TRUE;
 239         }
 240         message = __netconfig_wifi_tdls_send_dbus_str("TDLSStatus", (const char*)peer_mac);
 241         if (message == NULL) {
 242                 ERR(" TDLS : No active TDLS Link Setup !!!");
 243                 wifi_complete_tdls_connected_peer(wifi, context, "00.00.00.00.00.00");
 244                 return TRUE;
 245         }
 246
 247         g_variant_get(message, "(&s)", &reply_str);
 248         INFO("TDLS reply: [%s]", reply_str);
 249         INFO("TDLS :peer_mac [%s]", peer_mac);
 250
 251         if (g_strcmp0("connected", reply_str) != 0) {
 252                 ERR("[TizenMW<--WPAS] TDLS Connection not available");
 253                 wifi_complete_tdls_connected_peer(wifi, context, "00.00.00.00.00.00");
 254                 g_variant_unref(message);
 255                 return TRUE;
 256         }
 257
 258         INFO("TDLS Connection available, Peer Mac address %s", peer_mac);
 259         wifi_complete_tdls_connected_peer(wifi, context, peer_mac);
 260
 261         g_variant_unref(message);
 262         return TRUE;
 263 }
 264
 265 gboolean handle_tdls_channel_switch(Wifi *wifi, GDBusMethodInvocation *context,
 266                         gchar *peer_mac_Addr, int freq)
 267 {
 268         GVariant *message = NULL;
 269         GVariantBuilder *builder;
 270         GVariant *params;
 271         char *if_path = NULL;
 272         unsigned char oper_class = 0;
 273
 274         if (peer_mac_Addr == NULL) {
 275                 ERR("TDLS: Invalid Parameter");
 276                 wifi_complete_tdls_channel_switch(wifi, context,
 277                                                         NETCONFIG_ERROR_TDLS_FAIL_CHANNEL_SWITCH);
 278                 return TRUE;
 279         }
 280
 281         oper_class = (unsigned char)netconfig_get_operating_class(freq);
 282
 283         if (!oper_class) {
 284                 ERR("TDLS: Invalid Parameter");
 285                 wifi_complete_tdls_channel_switch(wifi, context,
 286                                                         NETCONFIG_ERROR_TDLS_FAIL_CHANNEL_SWITCH);
 287                 return TRUE;
 288         }
 289
 290         builder = g_variant_builder_new(G_VARIANT_TYPE("a{sv}"));
 291
 292         g_variant_builder_add(builder, "{sv}", "PeerAddress", g_variant_new_string(peer_mac_Addr));
 293         g_variant_builder_add(builder, "{sv}", "Frequency", g_variant_new_uint32(freq));
 294         g_variant_builder_add(builder, "{sv}", "OperClass", g_variant_new_byte(oper_class));
 295         params = g_variant_new("(@a{sv})", g_variant_builder_end(builder));
 296         g_variant_builder_unref(builder);
 297
 298         if_path = netconfig_wifi_get_supplicant_interface();
 299
 300         if (if_path == NULL) {
 301                 ERR("Fail to get wpa_supplicant DBus path");
 302                 wifi_complete_tdls_channel_switch(wifi, context,
 303                                                 NETCONFIG_ERROR_TDLS_FAIL_CHANNEL_SWITCH);
 304                 return TRUE;
 305         }
 306
 307         message = netconfig_invoke_dbus_method(SUPPLICANT_SERVICE,
 308                                 if_path, SUPPLICANT_INTERFACE ".Interface", "TDLSChannelSwitch", params);
 309
 310         g_free(if_path);
 311         if (message == NULL) {
 312                 ERR(" TDLS : Fail to Process TDLS Channel Switch Request !!!");
 313                 wifi_complete_tdls_channel_switch(wifi, context,
 314                                                 NETCONFIG_ERROR_TDLS_FAIL_CHANNEL_SWITCH);
 315                 return TRUE;
 316         }
 317
 318         INFO("TDLS Channel Change Request: Success");
 319         wifi_complete_tdls_channel_switch(wifi, context, NETCONFIG_ERROR_TDLS_NO_ERROR);
 320
 321         g_variant_unref(message);
 322         return TRUE;
 323 }
 324
 325
 326 gboolean handle_tdls_cancel_channel_switch(Wifi *wifi, GDBusMethodInvocation *context,
 327                         gchar *peer_mac_Addr)
 328 {
 329         GVariant *message = NULL;
 330
 331         if (peer_mac_Addr == NULL) {
 332                 INFO("TDLS: Invalid Parameter");
 333                 wifi_complete_tdls_cancel_channel_switch(wifi, context, NETCONFIG_ERROR_TDLS_FAIL_CHANNEL_SWITCH);
 334                 return TRUE;
 335         }
 336         message = __netconfig_wifi_tdls_send_dbus_str("TDLSCancelChannelSwitch", (const char*)peer_mac_Addr);
 337         if (message == NULL) {
 338                 ERR(" TDLS : Fail to TDLS Cancel Channel Swicth Request !!!");
 339                 wifi_complete_tdls_cancel_channel_switch(wifi, context, NETCONFIG_ERROR_TDLS_FAIL_CHANNEL_SWITCH);
 340                 return TRUE;
 341         }
 342
 343         INFO("TDLS Cancel Channel Swicth Request : Success");
 344         wifi_complete_tdls_cancel_channel_switch(wifi, context, NETCONFIG_ERROR_TDLS_NO_ERROR);
 345
 346         g_variant_unref(message);
 347         return TRUE;
 348 }
 349
 350 void netconfig_wifi_tdls_connected_event(GVariant *message)
 351 {
 352
 353         DBG("WiFi TDLS Connected EVENT");
 354         if (is_connected == 1) {
 355                 INFO("TDLS Peer already connected");
 356                 g_free(peer_mac);
 357         }
 358
 359         g_variant_get(message, "(s)", &peer_mac);
 360         INFO("Peer Mac Address: [%s]", peer_mac);
 361
 362         is_connected = 1;
 363         __netconfig_wifi_notify_tdls_event("TDLSConnect", peer_mac);
 364 }
 365
 366 void netconfig_wifi_tdls_disconnected_event(GVariant *message)
 367 {
 368         DBG("WiFi TDLS Disconnected EVENT");
 369         const gchar *peer_mac_addr = NULL;
 370
 371         g_variant_get(message, "(&s)", &peer_mac_addr);
 372         if (g_strcmp0(peer_mac, peer_mac_addr) == 0) {
 373                 INFO("TDLS Peer Disconnected Mac Address: [%s]", peer_mac);
 374                 is_connected = 0;
 375                 __netconfig_wifi_notify_tdls_event("TDLSDisconnect", peer_mac);
 376         } else
 377                 INFO("TDLS Peer Disconnected peer_mac(%s) != peer_mac_address(%s)", peer_mac, peer_mac_addr);
 378 }
 379
 380
 381 void netconfig_wifi_tdls_peer_found_event(GVariant *message)
 382 {
 383         DBG("WiFi TDLS Discovery EVENT Received !!");
 384         const gchar *peer_mac_addr = NULL;
 385
 386         if (!is_timer_expired) {
 387
 388                 g_variant_get(message, "(s)", &peer_mac_addr);
 389                 INFO("Discover Peer Mac Address: [%s]", peer_mac_addr);
 390
 391                 if (is_discover_broadcast == 0)
 392                         stop_tdls_timer();
 393
 394                 __netconfig_wifi_notify_tdls_discover_event(peer_mac_addr, is_discover_broadcast);
 395         } else
 396                 DBG("Timer expired: Do not process the TDLS Discovery Event");
 397 }
 398