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         const 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         INFO("TDLS Returned from Blocking method for Send DBUS Command");
 128         return message;
 129 }
 130
 131 static unsigned char _netconfig_freq_to_channel(int freq)
 132 {
 133         if (freq < 2412 || freq > 5825 ||
 134                 (freq > 2484 && freq < 5180)) {
 135                 ERR("Invalid Frequence Range");
 136                 return 0;
 137         }
 138         if (freq >= 5180)
 139                 return 36 + (freq - 5180)/5;
 140         else if (freq <= 2472)
 141                 return 1 + (freq - 2412)/5;
 142         else if (freq == 2484)
 143                 return 14;
 144         else
 145                 return 0;
 146 }
 147
 148 static unsigned char _netconfig_get_operating_class(int freq)
 149 {
 150         unsigned char channel = 0;
 151         unsigned char oper_class = 0;
 152
 153         channel = _netconfig_freq_to_channel(freq);
 154
 155         if (channel) {
 156                 /* Operating class 81 - 2.4 GHz band channels 1..13 */
 157                 if (channel >= 1 && channel <= 13)
 158                         oper_class = 81;
 159                 /* Operating class 115 - 5 GHz, channels 36-48 */
 160                 else if (channel >= 36 && channel <= 48)
 161                         oper_class = 115;
 162                 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
 163                 else
 164                         oper_class = 124;
 165
 166                 INFO("TDLS: Operating Class  is [%d]", oper_class);
 167                 return oper_class;
 168         }
 169         return 0;
 170 }
 171
 172 gboolean handle_tdls_connect(Wifi *wifi, GDBusMethodInvocation *context,
 173                         gchar *peer_mac_Addr)
 174 {
 175         DBG("[TizenMW-->WPAS]: TDLS Setup Request: [%s]", peer_mac_Addr);
 176
 177         if (is_connected) {
 178                 ERR(" Already TDLS Connection !!!");
 179         } else {
 180                 GVariant *message = NULL;
 181                 message = __netconfig_wifi_tdls_send_dbus_str("TDLSSetup", (const char*)peer_mac_Addr);
 182
 183                 if (message == NULL) {
 184                         ERR(" TDLS : failed to connect !!!");
 185                         netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_INTERNAL, "FailTdlsConnect");
 186                         return FALSE;
 187                 }
 188
 189                 DBG("[TizenMW<--WPAS] TDLS DBUS Command sent successfully");
 190                 g_variant_unref(message);
 191                 is_connected = 1;
 192         }
 193
 194         wifi_complete_tdls_connect(wifi, context, 1);
 195         return TRUE;
 196 }
 197
 198 gboolean handle_tdls_discover(Wifi *wifi, GDBusMethodInvocation *context,
 199                         gchar *peer_mac_Addr)
 200 {
 201         DBG("TDLS Discover Request: [%s]", peer_mac_Addr);
 202         int discover_timeout = 0;
 203
 204         GVariant *message = NULL;
 205
 206         if (tdls_timer_id > 0) {
 207                 DBG(" TDLS Discover is already progress !!!");
 208                 wifi_complete_tdls_discover(wifi, context, NETCONFIG_ERROR_TDLS_ALREADY_DONE);
 209                 return TRUE;
 210         }
 211
 212         message = __netconfig_wifi_tdls_send_dbus_str("TDLSDiscover", (const char*)peer_mac_Addr);
 213
 214         if (message == NULL) {
 215                 ERR(" TDLS : failed to discover !!!");
 216                 netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_INTERNAL, "FailTdlsDiscover");
 217                 wifi_complete_tdls_discover(wifi, context, NETCONFIG_ERROR_TDLS_FAIL_DISCOVER);
 218                 return FALSE;
 219         }
 220
 221         DBG(" TDLS DBUS Command sent successfully");
 222         g_variant_unref(message);
 223
 224         if (NULL != strstr(peer_mac_Addr, "ff:ff:ff:ff:ff:ff")) {
 225                 DBG("TDLS: Broadcast Discovery");
 226                 is_discover_broadcast = 1;
 227                 discover_timeout = TDLS_DISCOVER_BROADCAST_TIMOUT;
 228         } else {
 229                 is_discover_broadcast = 0;
 230                 discover_timeout = TDLS_DISCOVER_TIMOUT;
 231         }
 232
 233         is_timer_expired = 0;
 234         tdls_timer_id = g_timeout_add_seconds(discover_timeout,
 235                                         _tdls_timer_discover_event, NULL);
 236
 237         wifi_complete_tdls_discover(wifi, context, NETCONFIG_ERROR_TDLS_NO_ERROR);
 238         return TRUE;
 239 }
 240
 241 gboolean handle_tdls_disconnect(Wifi *wifi, GDBusMethodInvocation *context,
 242                         gchar *peer_mac_Addr)
 243 {
 244         DBG("[TizenMW-->WPAS]: TDLS Teardown Request: [%s]", peer_mac_Addr);
 245
 246         if (!is_connected) {
 247                 ERR(" Already TDLS disconnection !!!");
 248                 wifi_complete_tdls_disconnect(wifi, context, NETCONFIG_ERROR_TDLS_ALREADY_DONE);
 249         } else {
 250                 GVariant *message = NULL;
 251                 message = __netconfig_wifi_tdls_send_dbus_str("TDLSTeardown", (const char*)peer_mac_Addr);
 252
 253                 if (message == NULL) {
 254                         ERR(" TDLS : failed to disconnect !!!");
 255                         netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_INTERNAL, "FailTdlsDisconnect");
 256                         return FALSE;
 257                 }
 258
 259                 DBG("[TizenMW<--WPAS] TDLS DBUS Command sent successfully");
 260                 g_variant_unref(message);
 261                 is_connected = 0;
 262         }
 263
 264         wifi_complete_tdls_disconnect(wifi, context, NETCONFIG_ERROR_TDLS_NO_ERROR);
 265         return TRUE;
 266 }
 267
 268 gboolean handle_tdls_connected_peer(Wifi *wifi, GDBusMethodInvocation *context)
 269 {
 270         DBG("[TizenMW-->WPAS]: TDLS Connected Peer Request: ");
 271
 272         GVariant *message = NULL;
 273         const gchar* reply_str = NULL;
 274
 275         if (peer_mac == NULL) {
 276                 INFO("TDLS: No Active Connection");
 277                 wifi_complete_tdls_connected_peer(wifi, context, "00.00.00.00.00.00");
 278                 return TRUE;
 279         }
 280         message = __netconfig_wifi_tdls_send_dbus_str("TDLSStatus", (const char*)peer_mac);
 281         if (message == NULL) {
 282                 ERR(" TDLS : No active TDLS Link Setup !!!");
 283                 wifi_complete_tdls_connected_peer(wifi, context, "00.00.00.00.00.00");
 284                 return TRUE;
 285         }
 286
 287         g_variant_get(message, "(&s)", &reply_str);
 288         INFO("TDLS reply: [%s]", reply_str);
 289         INFO("TDLS :peer_mac [%s]", peer_mac);
 290
 291         if (g_strcmp0("connected", reply_str) != 0) {
 292                 ERR("[TizenMW<--WPAS] TDLS Connection not available");
 293                 wifi_complete_tdls_connected_peer(wifi, context, "00.00.00.00.00.00");
 294                 g_variant_unref(message);
 295                 return TRUE;
 296         }
 297
 298         INFO("TDLS Connection available, Peer Mac address %s", peer_mac);
 299         wifi_complete_tdls_connected_peer(wifi, context, peer_mac);
 300
 301         g_variant_unref(message);
 302         return TRUE;
 303 }
 304
 305 gboolean handle_tdls_channel_switch(Wifi *wifi, GDBusMethodInvocation *context,
 306                         gchar *peer_mac_Addr, int freq)
 307 {
 308         GVariant *message = NULL;
 309         GVariantBuilder *builder;
 310         GVariant *params;
 311         const char *if_path = NULL;
 312         unsigned char oper_class = 0;
 313
 314         if (peer_mac_Addr == NULL) {
 315                 ERR("TDLS: Invalid Parameter");
 316                 wifi_complete_tdls_channel_switch(wifi, context,
 317                                                         NETCONFIG_ERROR_TDLS_FAIL_CHANNEL_SWITCH);
 318                 return TRUE;
 319         }
 320
 321         oper_class = _netconfig_get_operating_class(freq);
 322
 323         if (!oper_class) {
 324                 ERR("TDLS: Invalid Parameter");
 325                 wifi_complete_tdls_channel_switch(wifi, context,
 326                                                         NETCONFIG_ERROR_TDLS_FAIL_CHANNEL_SWITCH);
 327                 return TRUE;
 328         }
 329
 330         builder = g_variant_builder_new(G_VARIANT_TYPE("a{sv}"));
 331
 332         g_variant_builder_add(builder, "{sv}", "PeerAddress", g_variant_new_string(peer_mac_Addr));
 333         g_variant_builder_add(builder, "{sv}", "Frequency", g_variant_new_uint32(freq));
 334         g_variant_builder_add(builder, "{sv}", "OperClass", g_variant_new_byte(oper_class));
 335         params = g_variant_new("(@a{sv})", g_variant_builder_end(builder));
 336         g_variant_builder_unref(builder);
 337
 338         if_path = netconfig_wifi_get_supplicant_interface();
 339
 340         if (if_path == NULL) {
 341                 ERR("Fail to get wpa_supplicant DBus path");
 342                 wifi_complete_tdls_channel_switch(wifi, context,
 343                                                 NETCONFIG_ERROR_TDLS_FAIL_CHANNEL_SWITCH);
 344                 return TRUE;
 345         }
 346
 347         message = netconfig_invoke_dbus_method(SUPPLICANT_SERVICE,
 348                                 if_path, SUPPLICANT_INTERFACE ".Interface", "TDLSChannelSwitch", params);
 349
 350         if (message == NULL) {
 351                 ERR(" TDLS : Fail to Process TDLS Channel Switch Request !!!");
 352                 wifi_complete_tdls_channel_switch(wifi, context,
 353                                                 NETCONFIG_ERROR_TDLS_FAIL_CHANNEL_SWITCH);
 354                 return TRUE;
 355         }
 356
 357         INFO("TDLS Channel Change Request: Success");
 358         wifi_complete_tdls_channel_switch(wifi, context, NETCONFIG_ERROR_TDLS_NO_ERROR);
 359
 360         g_variant_unref(message);
 361         return TRUE;
 362 }
 363
 364
 365 gboolean handle_tdls_cancel_channel_switch(Wifi *wifi, GDBusMethodInvocation *context,
 366                         gchar *peer_mac_Addr)
 367 {
 368         GVariant *message = NULL;
 369
 370         if (peer_mac_Addr == NULL) {
 371                 INFO("TDLS: Invalid Parameter");
 372                 wifi_complete_tdls_cancel_channel_switch(wifi, context, NETCONFIG_ERROR_TDLS_FAIL_CHANNEL_SWITCH);
 373                 return TRUE;
 374         }
 375         message = __netconfig_wifi_tdls_send_dbus_str("TDLSCancelChannelSwitch", (const char*)peer_mac_Addr);
 376         if (message == NULL) {
 377                 ERR(" TDLS : Fail to TDLS Cancel Channel Swicth Request !!!");
 378                 wifi_complete_tdls_cancel_channel_switch(wifi, context, NETCONFIG_ERROR_TDLS_FAIL_CHANNEL_SWITCH);
 379                 return TRUE;
 380         }
 381
 382         INFO("TDLS Cancel Channel Swicth Request : Success");
 383         wifi_complete_tdls_cancel_channel_switch(wifi, context, NETCONFIG_ERROR_TDLS_NO_ERROR);
 384
 385         g_variant_unref(message);
 386         return TRUE;
 387 }
 388
 389 void netconfig_wifi_tdls_connected_event(GVariant *message)
 390 {
 391
 392         DBG("WiFi TDLS Connected EVENT");
 393         if (is_connected == 1) {
 394                 INFO("TDLS Peer already connected");
 395                 g_free(peer_mac);
 396         }
 397
 398         g_variant_get(message, "(s)", &peer_mac);
 399         INFO("Peer Mac Address: [%s]", peer_mac);
 400
 401         is_connected = 1;
 402         __netconfig_wifi_notify_tdls_event("TDLSConnect", peer_mac);
 403 }
 404
 405 void netconfig_wifi_tdls_disconnected_event(GVariant *message)
 406 {
 407         DBG("WiFi TDLS Disconnected EVENT");
 408         const gchar *peer_mac_addr = NULL;
 409
 410         g_variant_get(message, "(&s)", &peer_mac_addr);
 411         if (g_strcmp0(peer_mac, peer_mac_addr) == 0) {
 412                 INFO("TDLS Peer Disconnected Mac Address: [%s]", peer_mac);
 413                 is_connected = 0;
 414                 __netconfig_wifi_notify_tdls_event("TDLSDisconnect", peer_mac);
 415         } else
 416                 INFO("TDLS Peer Disconnected peer_mac(%s) != peer_mac_address(%s)", peer_mac, peer_mac_addr);
 417 }
 418
 419
 420 void netconfig_wifi_tdls_peer_found_event(GVariant *message)
 421 {
 422         DBG("WiFi TDLS Discovery EVENT Received !!");
 423         const gchar *peer_mac_addr = NULL;
 424
 425         if (!is_timer_expired) {
 426
 427                 g_variant_get(message, "(s)", &peer_mac_addr);
 428                 INFO("Discover Peer Mac Address: [%s]", peer_mac_addr);
 429
 430                 if (is_discover_broadcast == 0)
 431                         stop_tdls_timer();
 432
 433                 __netconfig_wifi_notify_tdls_discover_event(peer_mac_addr, is_discover_broadcast);
 434         } else
 435                 DBG("Timer expired: Do not process the TDLS Discovery Event");
 436 }
 437