src/wifi-wps.c

   1 /*
   2  * Network Configuration Module
   3  *
   4  * Copyright (c) 2000 - 2012 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 <errno.h>
  21 #include <vconf.h>
  22 #include <glib.h>
  23
  24 #include "log.h"
  25 #include "util.h"
  26 #include "netdbus.h"
  27 #include "neterror.h"
  28 #include "wifi-wps.h"
  29 #include "wifi-power.h"
  30 #include "wifi-state.h"
  31 #include "netsupplicant.h"
  32 #include "wifi-background-scan.h"
  33
  34 #define NETCONFIG_SSID_LEN                                              32
  35 #define NETCONFIG_BSSID_LEN                                             6
  36 #define NETCONFIG_WPS_DBUS_REPLY_TIMEOUT                (10 * 1000)
  37
  38 #define VCONF_WIFI_ALWAYS_ALLOW_SCANNING \
  39         "file/private/wifi/always_allow_scanning"
  40
  41 static gboolean netconfig_is_wps_enabled = FALSE;
  42 static gboolean netconfig_is_device_scanning = FALSE;
  43 static gboolean netconfig_is_wps_scan_aborted = FALSE;
  44 static int wps_bss_list_count = 0;
  45
  46 struct wps_bss_info_t {
  47         unsigned char ssid[NETCONFIG_SSID_LEN + 1];
  48         unsigned char bssid[NETCONFIG_BSSID_LEN + 1];
  49         int ssid_len;
  50         int rssi;
  51         int mode;
  52 };
  53
  54 static GSList *wps_bss_info_list = NULL;
  55
  56 static void __netconfig_wps_set_mode(gboolean enable)
  57 {
  58         if (netconfig_is_wps_enabled == enable)
  59                 return;
  60
  61         netconfig_is_wps_enabled = enable;
  62 }
  63
  64 gboolean netconfig_wifi_is_wps_enabled(void)
  65 {
  66         return netconfig_is_wps_enabled;
  67 }
  68
  69 static void __netconfig_wifi_wps_notify_scan_done(void)//check this
  70 {
  71         GVariantBuilder *builder = NULL;
  72         GVariantBuilder *builder1 = NULL;
  73         GSList* list = NULL;
  74         const char *prop_ssid = "ssid";
  75         const char *prop_bssid = "bssid";
  76         const char *prop_rssi = "rssi";
  77         const char *prop_mode = "mode";
  78
  79         builder = g_variant_builder_new(G_VARIANT_TYPE ("a{sv}"));
  80         for (list = wps_bss_info_list; list != NULL; list = list->next) {
  81                 struct wps_bss_info_t *bss_info = (struct wps_bss_info_t *)list->data;
  82
  83                 if (bss_info) {
  84                         gchar bssid_buff[18] = { 0, };
  85                         gchar *bssid_str = bssid_buff;
  86                         unsigned char *ssid = (unsigned char *)bss_info->ssid;
  87                         int ssid_len = (int)bss_info->ssid_len;
  88                         int rssi = (int)bss_info->rssi;
  89                         int mode = (int)bss_info->mode;
  90                         int i = 0;
  91                         g_snprintf(bssid_buff, 18, "%02x:%02x:%02x:%02x:%02x:%02x",
  92                                         bss_info->bssid[0], bss_info->bssid[1], bss_info->bssid[2],
  93                                         bss_info->bssid[3], bss_info->bssid[4], bss_info->bssid[5]);
  94
  95                         DBG("BSS found; SSID %s, BSSID %s, RSSI %d MODE %d", ssid, bssid_str, rssi, mode);
  96
  97                         builder1 = g_variant_builder_new (G_VARIANT_TYPE ("ay"));
  98                         for (i = 0; i < ssid_len; i++) {
  99                                 g_variant_builder_add (builder1, "y", ssid[i]);
 100                         }
 101                         g_variant_builder_add(builder, "{sv}", prop_ssid, g_variant_builder_end(builder1));
 102                         g_variant_builder_unref(builder1);
 103
 104                         g_variant_builder_add(builder, "{sv}", prop_bssid, g_variant_new_string(bssid_str));
 105                         g_variant_builder_add(builder, "{sv}", prop_rssi, g_variant_new_int32(rssi));
 106                         g_variant_builder_add(builder, "{sv}", prop_mode, g_variant_new_int32(mode));
 107                 }
 108         }
 109
 110         wifi_emit_wps_scan_completed((Wifi *)get_wifi_object(), g_variant_builder_end(builder));
 111         g_variant_builder_unref(builder);
 112
 113         if (wps_bss_info_list != NULL) {
 114                 g_slist_free_full(wps_bss_info_list, g_free);
 115         }
 116
 117         wps_bss_info_list = NULL;
 118         wps_bss_list_count = 0;
 119         INFO("WpsScanCompleted");
 120
 121         return;
 122 }
 123
 124 static void __netconfig_wifi_wps_get_bss_info_result(
 125                 GObject *source_object, GAsyncResult *res, gpointer user_data)
 126 {
 127         GVariant *reply = NULL;
 128         GVariant *value;
 129         GVariantIter *iter;
 130         gchar *key;
 131         struct wps_bss_info_t *bss_info;
 132         GDBusConnection *conn = NULL;
 133         GError *error = NULL;
 134
 135         conn = G_DBUS_CONNECTION (source_object);
 136         reply = g_dbus_connection_call_finish(conn, res, &error);
 137
 138         if (error != NULL) {
 139                 ERR("Error code: [%d] Error message: [%s]", error->code, error->message);
 140                 g_error_free(error);
 141                 goto done;
 142         }
 143
 144         bss_info = g_try_new0(struct wps_bss_info_t, 1);
 145         if (bss_info == NULL)
 146                 goto done;
 147
 148         g_variant_get(reply, "(a{sv})", &iter);
 149         while (g_variant_iter_loop(iter, "{sv}", &key, &value)) {
 150                 if (key != NULL) {
 151                         if (g_strcmp0(key, "BSSID") == 0) {
 152                                 const guchar *bssid;
 153                                 gsize bssid_len;
 154
 155                                 bssid = g_variant_get_fixed_array(value, &bssid_len, sizeof(guchar));
 156                                 if (bssid_len == NETCONFIG_BSSID_LEN)
 157                                         memcpy(bss_info->bssid, bssid, bssid_len);
 158                         } else if (g_strcmp0(key, "SSID") == 0) {
 159                                 const guchar *ssid;
 160                                 gsize ssid_len;
 161
 162                                 ssid = g_variant_get_fixed_array(value, &ssid_len, sizeof(guchar));
 163                                 if (ssid != NULL && ssid_len > 0 && ssid_len <= NETCONFIG_SSID_LEN) {
 164                                         memcpy(bss_info->ssid, ssid, ssid_len);
 165                                         bss_info->ssid_len = ssid_len;
 166                                 } else {
 167                                         memset(bss_info->ssid, 0, sizeof(bss_info->ssid));
 168                                         bss_info->ssid_len = 0;
 169                                 }
 170                         } else if (g_strcmp0(key, "Mode") == 0) {
 171                                 gchar *mode = NULL;
 172
 173                                 g_variant_get(value, "s", &mode);
 174                                 if (mode == NULL)
 175                                         bss_info->mode = 0;
 176                                 else {
 177                                         if (g_strcmp0(mode, "infrastructure") == 0)
 178                                                 bss_info->mode = 1;
 179                                         else if (g_strcmp0(mode, "ad-hoc") == 0)
 180                                                 bss_info->mode = 2;
 181                                         else
 182                                                 bss_info->mode = 0;
 183                                         g_free(mode);
 184                                 }
 185                         } else if (g_strcmp0(key, "Signal") == 0) {
 186                                 gint16 signal;
 187
 188                                 signal = g_variant_get_int16(value);
 189                                 bss_info->rssi = signal;
 190                         }
 191                 }
 192         }
 193
 194         if (bss_info->ssid[0] == '\0')
 195                 g_free(bss_info);
 196         else
 197                 wps_bss_info_list = g_slist_append(wps_bss_info_list, bss_info);
 198
 199         g_variant_iter_free(iter);
 200 done:
 201         if (reply)
 202                 g_variant_unref(reply);
 203
 204         netconfig_gdbus_pending_call_unref();
 205
 206         wps_bss_list_count--;
 207         if (wps_bss_list_count <= 0) {
 208                 __netconfig_wifi_wps_notify_scan_done();
 209
 210                 if (netconfig_is_wps_scan_aborted == FALSE)
 211                         wifi_power_driver_and_supplicant(FALSE);
 212         }
 213 }
 214
 215 static void __netconfig_wifi_wps_get_bss_info(const char *path, int index)
 216 {
 217         gboolean reply = FALSE;
 218         GVariant *param = NULL;
 219
 220         param = g_variant_new("(s)", SUPPLICANT_IFACE_BSS);
 221
 222         reply = netconfig_invoke_dbus_method_nonblock(SUPPLICANT_SERVICE,
 223                         path, DBUS_INTERFACE_PROPERTIES,
 224                         "GetAll", param, __netconfig_wifi_wps_get_bss_info_result);
 225         if (reply != TRUE)
 226                 ERR("Fail to invoke_dbus_method_nonblock GetAll");
 227
 228         return;
 229 }
 230
 231 static void __netconfig_wifi_wps_get_bsss_result(GObject *source_object,
 232                 GAsyncResult *res, gpointer user_data)
 233 {
 234         GVariant *reply = NULL;
 235         GVariant *value = NULL;
 236         GVariantIter *iter = NULL;
 237         GDBusConnection *conn = NULL;
 238         gchar *path = NULL;
 239         gboolean counter_flag = FALSE;
 240         GError *error = NULL;
 241
 242         conn = G_DBUS_CONNECTION (source_object);
 243         reply = g_dbus_connection_call_finish(conn, res, &error);
 244         if (error != NULL) {
 245                 ERR("Error code: [%d] Error message: [%s]", error->code, error->message);
 246                 g_error_free(error);
 247                 goto done;
 248         }
 249
 250         g_variant_get(reply, "(v)", &value);
 251         if (g_variant_is_of_type(value, G_VARIANT_TYPE_OBJECT_PATH_ARRAY)) {
 252                 g_variant_get(value, "ao", &iter);
 253                 while (g_variant_iter_next(iter, "o", &path)) {
 254                         if (path != NULL && g_strcmp0(path, "/") != 0) {
 255                                 __netconfig_wifi_wps_get_bss_info(path, ++wps_bss_list_count);
 256
 257                                 counter_flag = TRUE;
 258                         }
 259
 260                         if (path)
 261                                 g_free(path);
 262                 }
 263         }
 264
 265         if (iter)
 266                 g_variant_iter_free(iter);
 267
 268         if (value)
 269                 g_variant_unref(value);
 270
 271 done:
 272         if (reply)
 273                 g_variant_unref(reply);
 274
 275         netconfig_gdbus_pending_call_unref();
 276
 277         /* Send WpsScanCompleted signal even when the BSS count is 0 */
 278         if (wps_bss_list_count <= 0 && counter_flag == FALSE) {
 279                 __netconfig_wifi_wps_notify_scan_done();
 280
 281                 if (netconfig_is_wps_scan_aborted == FALSE)
 282                         wifi_power_driver_and_supplicant(FALSE);
 283         }
 284 }
 285
 286 static int _netconfig_wifi_wps_get_bsss(void)
 287 {
 288         gboolean reply = FALSE;
 289         const char *if_path = NULL;
 290         GVariant *params = NULL;
 291
 292         if_path = netconfig_wifi_get_supplicant_interface();
 293         if (if_path == NULL) {
 294                 DBG("Fail to get wpa_supplicant DBus path");
 295                 return -ESRCH;
 296         }
 297
 298         params = g_variant_new("(ss)", SUPPLICANT_IFACE_INTERFACE, "BSSs");
 299
 300         reply = netconfig_invoke_dbus_method_nonblock(SUPPLICANT_SERVICE,
 301                         if_path, DBUS_INTERFACE_PROPERTIES,
 302                         "Get", params, __netconfig_wifi_wps_get_bsss_result);
 303         if (reply != TRUE) {
 304                 ERR("Fail to method: Get");
 305
 306                 return -ESRCH;
 307         }
 308
 309         return 0;
 310 }
 311
 312 void netconfig_wifi_wps_signal_scandone(void)
 313 {
 314         wps_bss_list_count = 0;
 315         _netconfig_wifi_wps_get_bsss();
 316
 317         netconfig_is_device_scanning = FALSE;
 318
 319         __netconfig_wps_set_mode(FALSE);
 320 }
 321
 322 void netconfig_wifi_wps_signal_scanaborted(void)
 323 {
 324         wps_bss_list_count = 0;
 325         netconfig_is_wps_scan_aborted = TRUE;
 326         _netconfig_wifi_wps_get_bsss();
 327
 328         netconfig_is_device_scanning = FALSE;
 329
 330         __netconfig_wps_set_mode(FALSE);
 331 }
 332
 333 static int __netconfig_wifi_wps_request_scan(const char *if_path)
 334 {
 335         GDBusConnection *connection = NULL;
 336         GVariant *message = NULL;
 337         GVariantBuilder *builder = NULL;
 338         const char *key1 = "Type";
 339         const char *val1 = "passive";
 340
 341         if (if_path == NULL)
 342                 if_path = netconfig_wifi_get_supplicant_interface();
 343
 344         if (if_path == NULL) {
 345                 DBG("Fail to get wpa_supplicant DBus path");
 346                 return -ESRCH;
 347         }
 348
 349         connection = netdbus_get_connection();
 350         if (connection == NULL) {
 351                 ERR("Failed to get GDBusconnection");
 352                 return -EIO;
 353         }
 354
 355         builder = g_variant_builder_new(G_VARIANT_TYPE ("a{sv}"));
 356         g_variant_builder_add(builder, "{sv}", key1, g_variant_new_string(val1));
 357         message = g_variant_new("(@a{sv})", g_variant_builder_end(builder));
 358         g_variant_builder_unref(builder);
 359
 360         g_dbus_connection_call(connection,
 361                         SUPPLICANT_SERVICE,
 362                         if_path,
 363                         SUPPLICANT_INTERFACE ".Interface",
 364                         "Scan",
 365                         message,
 366                         NULL,
 367                         G_DBUS_CALL_FLAGS_NONE,
 368                         NETCONFIG_WPS_DBUS_REPLY_TIMEOUT,
 369                         netdbus_get_cancellable(),
 370                         NULL,
 371                         NULL);
 372
 373         netconfig_is_device_scanning = TRUE;
 374
 375         g_variant_unref(message);
 376         /* Clear bss_info_list for the next scan result */
 377         if (wps_bss_info_list) {
 378                 g_slist_free_full(wps_bss_info_list, g_free);
 379                 wps_bss_info_list = NULL;
 380         }
 381
 382         netconfig_is_wps_scan_aborted = FALSE;
 383
 384         return 0;
 385 }
 386
 387 static void __netconfig_wifi_interface_create_result(
 388                 GObject *source_object, GAsyncResult *res, gpointer user_data)
 389 {
 390         GVariant *message;
 391         gchar *path = NULL;
 392         GDBusConnection *conn = NULL;
 393         GError *error = NULL;
 394
 395         conn = G_DBUS_CONNECTION (source_object);
 396
 397         message = g_dbus_connection_call_finish(conn, res, &error);
 398         if (error == NULL) {
 399                 g_variant_get(message, "(o)", &path);
 400
 401                 if (path) {
 402                         __netconfig_wifi_wps_request_scan(path);
 403                         g_free(path);
 404                 }
 405         } else {
 406                 ERR("Failed to create interface, Error: %d[%s]", error->code, error->message);
 407                 __netconfig_wps_set_mode(FALSE);
 408                 wifi_power_driver_and_supplicant(FALSE);
 409         }
 410
 411         g_variant_unref(message);
 412 }
 413
 414 static int  __netconfig_wifi_wps_create_interface(void)
 415 {
 416         GDBusConnection *connection = NULL;
 417         GVariant *message = NULL;
 418         GVariantBuilder *builder = NULL;
 419         const char *key = "Ifname";
 420         const char *val = WIFI_IFNAME;
 421
 422         connection = netdbus_get_connection();
 423         if (connection == NULL) {
 424                 DBG("Failed to get GDBusconnection");
 425                 return -EIO;
 426         }
 427
 428         builder = g_variant_builder_new(G_VARIANT_TYPE ("a{sv}"));
 429         g_variant_builder_add(builder, "{sv}", key, g_variant_new_string(val));
 430         message = g_variant_new("(@a{sv})", g_variant_builder_end(builder));
 431
 432         g_dbus_connection_call(connection,
 433                         SUPPLICANT_SERVICE,
 434                         SUPPLICANT_PATH,
 435                         SUPPLICANT_INTERFACE,
 436                         "CreateInterface",
 437                         message,
 438                         NULL,
 439                         G_DBUS_CALL_FLAGS_NONE,
 440                         NETCONFIG_WPS_DBUS_REPLY_TIMEOUT,
 441                         netdbus_get_cancellable(),
 442                         (GAsyncReadyCallback) __netconfig_wifi_interface_create_result,
 443                         NULL);
 444
 445         g_variant_unref(message);
 446
 447         return 0;
 448 }
 449
 450 static int __netconfig_wifi_wps_scan(void)
 451 {
 452         int err = 0;
 453         wifi_tech_state_e wifi_tech_state;
 454
 455         if (netconfig_is_device_scanning == TRUE)
 456                 return -EINPROGRESS;
 457
 458         wifi_tech_state = wifi_state_get_technology_state();
 459         if (wifi_tech_state <= NETCONFIG_WIFI_TECH_OFF)
 460                 err = wifi_power_driver_and_supplicant(TRUE);
 461
 462         if (err < 0 && err != -EALREADY)
 463                 return err;
 464
 465         netconfig_is_device_scanning = TRUE;
 466
 467         DBG("WPS scan requested");
 468         if (wifi_tech_state >= NETCONFIG_WIFI_TECH_POWERED) {
 469                 if (netconfig_wifi_get_scanning() == TRUE)
 470                         return -EINPROGRESS;
 471
 472                 netconfig_wifi_bgscan_start(TRUE);
 473
 474                 if (wifi_tech_state == NETCONFIG_WIFI_TECH_CONNECTED)
 475                         __netconfig_wifi_wps_request_scan(NULL);
 476         } else {
 477                 err = __netconfig_wifi_wps_create_interface();
 478         }
 479
 480         return err;
 481 }
 482
 483 gboolean handle_request_wps_scan(Wifi *wifi, GDBusMethodInvocation *context)
 484 {
 485         int err, enabled = 0;
 486         wifi_tech_state_e tech_state;
 487
 488         g_return_val_if_fail(wifi != NULL, FALSE);
 489
 490         if (netconfig_is_wifi_tethering_on() == TRUE) {
 491                 ERR("Wi-Fi Tethering is enabled");
 492                 netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_NO_SERVICE, "TetheringEnabled");
 493                 return -EBUSY;
 494         }
 495
 496 #if !defined TIZEN_WEARABLE
 497         if (netconfig_wifi_is_bgscan_paused()) {
 498                 ERR("Scan is paused");
 499                 netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_NO_SERVICE, "ScanPaused");
 500                 return FALSE;
 501         }
 502 #endif
 503
 504         tech_state = wifi_state_get_technology_state();
 505         if (tech_state <= NETCONFIG_WIFI_TECH_OFF) {
 506 #if !defined TIZEN_WEARABLE
 507                 vconf_get_int(VCONF_WIFI_ALWAYS_ALLOW_SCANNING, &enabled);
 508 #else
 509                 enabled = 0;
 510 #endif
 511
 512                 if (enabled == 0) {
 513                         netconfig_error_permission_denied(context);
 514                         return FALSE;
 515                 }
 516         }
 517
 518         __netconfig_wps_set_mode(TRUE);
 519
 520         err = __netconfig_wifi_wps_scan();
 521         if (err < 0) {
 522                 if (err == -EINPROGRESS)
 523                         netconfig_error_inprogress(context);
 524                 else
 525                         netconfig_error_wifi_driver_failed(context);
 526
 527                 return FALSE;
 528         }
 529
 530         wifi_complete_request_wps_scan(wifi, context);
 531         return TRUE;
 532 }
 533
 534 #if defined TIZEN_TV
 535 static void __interface_wps_cancel_result(GObject *source_object,
 536                         GAsyncResult *res, gpointer user_data)
 537 {
 538         GVariant *reply;
 539         GDBusConnection *conn = NULL;
 540         GError *error = NULL;
 541
 542         conn = G_DBUS_CONNECTION (source_object);
 543         reply = g_dbus_connection_call_finish(conn, res, &error);
 544
 545         if (reply == NULL) {
 546                 if (error != NULL) {
 547                         ERR("Fail to request status [%d: %s]",
 548                                         error->code, error->message);
 549                         g_error_free(error);
 550                 } else {
 551                         ERR("Fail torequest status");
 552                 }
 553         } else {
 554                 DBG("Successfully M/W--->WPAS: Interface.WPS.Cancel Method");
 555         }
 556
 557         g_variant_unref(reply);
 558         netconfig_gdbus_pending_call_unref();
 559 }
 560
 561 static gboolean __netconfig_wifi_invoke_wps_cancel()
 562 {
 563         gboolean reply = FALSE;
 564         const char *if_path = NULL;
 565
 566         if_path = netconfig_wifi_get_supplicant_interface();
 567         if (if_path == NULL) {
 568                 DBG("Fail to get wpa_supplicant DBus path");
 569                 return -ESRCH;
 570         }
 571
 572         DBG("M/W--->WPAS: Interface.WPS.Cancel Method");
 573
 574         reply = netconfig_invoke_dbus_method_nonblock(SUPPLICANT_SERVICE,
 575                         if_path, SUPPLICANT_IFACE_WPS,
 576                         "Cancel", NULL, __interface_wps_cancel_result);
 577
 578         if (reply != TRUE)
 579                 ERR("M/W--->WPAS: Interface.WPS.Cancel Method Failed");
 580
 581         return reply;
 582 }
 583 #endif
 584
 585 gboolean netconfig_iface_wifi_request_wps_cancel(Wifi *wifi, GDBusMethodInvocation **context)
 586 {
 587 #if defined TIZEN_TV
 588         DBG("Received WPS PBC Cancel Request");
 589         g_return_val_if_fail(wifi != NULL, FALSE);
 590         return __netconfig_wifi_invoke_wps_cancel();
 591 #else
 592         /*Not supported for mobile and Wearable profile*/
 593         return FALSE;
 594 #endif
 595 }