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)
  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                         g_variant_builder_add(builder, "{sv}", prop_ssid, g_variant_builder_end(builder1));
 101                         g_variant_builder_unref(builder1);
 102
 103                         g_variant_builder_add(builder, "{sv}", prop_bssid, g_variant_new_string(bssid_str));
 104                         g_variant_builder_add(builder, "{sv}", prop_rssi, g_variant_new_int32(rssi));
 105                         g_variant_builder_add(builder, "{sv}", prop_mode, g_variant_new_int32(mode));
 106                 }
 107         }
 108
 109         wifi_emit_wps_scan_completed((Wifi *)get_wifi_object(), g_variant_builder_end(builder));
 110         g_variant_builder_unref(builder);
 111
 112         if (wps_bss_info_list != NULL)
 113                 g_slist_free_full(wps_bss_info_list, g_free);
 114
 115         wps_bss_info_list = NULL;
 116         wps_bss_list_count = 0;
 117         INFO("WpsScanCompleted");
 118
 119         return;
 120 }
 121
 122 static void __netconfig_wifi_wps_get_bss_info_result(
 123                 GObject *source_object, GAsyncResult *res, gpointer user_data)
 124 {
 125         GVariant *reply = NULL;
 126         GVariant *value;
 127         GVariantIter *iter;
 128         gchar *key;
 129         struct wps_bss_info_t *bss_info;
 130         GDBusConnection *conn = NULL;
 131         GError *error = NULL;
 132
 133         conn = G_DBUS_CONNECTION(source_object);
 134         reply = g_dbus_connection_call_finish(conn, res, &error);
 135
 136         if (error != NULL) {
 137                 ERR("Error code: [%d] Error message: [%s]", error->code, error->message);
 138                 g_error_free(error);
 139                 goto done;
 140         }
 141
 142         bss_info = g_try_new0(struct wps_bss_info_t, 1);
 143         if (bss_info == NULL)
 144                 goto done;
 145
 146         g_variant_get(reply, "(a{sv})", &iter);
 147         while (g_variant_iter_loop(iter, "{sv}", &key, &value)) {
 148                 if (key != NULL) {
 149                         if (g_strcmp0(key, "BSSID") == 0) {
 150                                 const guchar *bssid;
 151                                 gsize bssid_len;
 152
 153                                 bssid = g_variant_get_fixed_array(value, &bssid_len, sizeof(guchar));
 154                                 if (bssid_len == NETCONFIG_BSSID_LEN)
 155                                         memcpy(bss_info->bssid, bssid, bssid_len);
 156                         } else if (g_strcmp0(key, "SSID") == 0) {
 157                                 const guchar *ssid;
 158                                 gsize ssid_len;
 159
 160                                 ssid = g_variant_get_fixed_array(value, &ssid_len, sizeof(guchar));
 161                                 if (ssid != NULL && ssid_len > 0 && ssid_len <= NETCONFIG_SSID_LEN) {
 162                                         memcpy(bss_info->ssid, ssid, ssid_len);
 163                                         bss_info->ssid_len = ssid_len;
 164                                 } else {
 165                                         memset(bss_info->ssid, 0, sizeof(bss_info->ssid));
 166                                         bss_info->ssid_len = 0;
 167                                 }
 168                         } else if (g_strcmp0(key, "Mode") == 0) {
 169                                 gchar *mode = NULL;
 170
 171                                 g_variant_get(value, "s", &mode);
 172                                 if (mode == NULL)
 173                                         bss_info->mode = 0;
 174                                 else {
 175                                         if (g_strcmp0(mode, "infrastructure") == 0)
 176                                                 bss_info->mode = 1;
 177                                         else if (g_strcmp0(mode, "ad-hoc") == 0)
 178                                                 bss_info->mode = 2;
 179                                         else
 180                                                 bss_info->mode = 0;
 181                                         g_free(mode);
 182                                 }
 183                         } else if (g_strcmp0(key, "Signal") == 0) {
 184                                 gint16 signal;
 185
 186                                 signal = g_variant_get_int16(value);
 187                                 bss_info->rssi = signal;
 188                         }
 189                 }
 190         }
 191
 192         if (bss_info->ssid[0] == '\0')
 193                 g_free(bss_info);
 194         else
 195                 wps_bss_info_list = g_slist_append(wps_bss_info_list, bss_info);
 196
 197         g_variant_iter_free(iter);
 198 done:
 199         if (reply)
 200                 g_variant_unref(reply);
 201
 202         netconfig_gdbus_pending_call_unref();
 203
 204         wps_bss_list_count--;
 205         if (wps_bss_list_count <= 0) {
 206                 __netconfig_wifi_wps_notify_scan_done();
 207
 208                 if (netconfig_is_wps_scan_aborted == FALSE)
 209                         wifi_power_driver_and_supplicant(FALSE);
 210         }
 211 }
 212
 213 static void __netconfig_wifi_wps_get_bss_info(const char *path, int index)
 214 {
 215         gboolean reply = FALSE;
 216         GVariant *param = NULL;
 217
 218         param = g_variant_new("(s)", SUPPLICANT_IFACE_BSS);
 219
 220         reply = netconfig_invoke_dbus_method_nonblock(SUPPLICANT_SERVICE,
 221                         path, DBUS_INTERFACE_PROPERTIES,
 222                         "GetAll", param, __netconfig_wifi_wps_get_bss_info_result);
 223         if (reply != TRUE)
 224                 ERR("Fail to invoke_dbus_method_nonblock GetAll");
 225
 226         return;
 227 }
 228
 229 static void __netconfig_wifi_wps_get_bsss_result(GObject *source_object,
 230                 GAsyncResult *res, gpointer user_data)
 231 {
 232         GVariant *reply = NULL;
 233         GVariant *value = NULL;
 234         GVariantIter *iter = NULL;
 235         GDBusConnection *conn = NULL;
 236         gchar *path = NULL;
 237         gboolean counter_flag = FALSE;
 238         GError *error = NULL;
 239
 240         conn = G_DBUS_CONNECTION(source_object);
 241         reply = g_dbus_connection_call_finish(conn, res, &error);
 242         if (error != NULL) {
 243                 ERR("Error code: [%d] Error message: [%s]", error->code, error->message);
 244                 g_error_free(error);
 245                 goto done;
 246         }
 247
 248         g_variant_get(reply, "(v)", &value);
 249         if (g_variant_is_of_type(value, G_VARIANT_TYPE_OBJECT_PATH_ARRAY)) {
 250                 g_variant_get(value, "ao", &iter);
 251                 while (g_variant_iter_next(iter, "o", &path)) {
 252                         if (path != NULL && g_strcmp0(path, "/") != 0) {
 253                                 __netconfig_wifi_wps_get_bss_info(path, ++wps_bss_list_count);
 254
 255                                 counter_flag = TRUE;
 256                         }
 257
 258                         if (path)
 259                                 g_free(path);
 260                 }
 261         }
 262
 263         if (iter)
 264                 g_variant_iter_free(iter);
 265
 266         if (value)
 267                 g_variant_unref(value);
 268
 269 done:
 270         if (reply)
 271                 g_variant_unref(reply);
 272
 273         netconfig_gdbus_pending_call_unref();
 274
 275         /* Send WpsScanCompleted signal even when the BSS count is 0 */
 276         if (wps_bss_list_count <= 0 && counter_flag == FALSE) {
 277                 __netconfig_wifi_wps_notify_scan_done();
 278
 279                 if (netconfig_is_wps_scan_aborted == FALSE)
 280                         wifi_power_driver_and_supplicant(FALSE);
 281         }
 282 }
 283
 284 static int _netconfig_wifi_wps_get_bsss(void)
 285 {
 286         gboolean reply = FALSE;
 287         const char *if_path = NULL;
 288         GVariant *params = NULL;
 289
 290         if_path = netconfig_wifi_get_supplicant_interface();
 291         if (if_path == NULL) {
 292                 DBG("Fail to get wpa_supplicant DBus path");
 293                 return -ESRCH;
 294         }
 295
 296         params = g_variant_new("(ss)", SUPPLICANT_IFACE_INTERFACE, "BSSs");
 297
 298         reply = netconfig_invoke_dbus_method_nonblock(SUPPLICANT_SERVICE,
 299                         if_path, DBUS_INTERFACE_PROPERTIES,
 300                         "Get", params, __netconfig_wifi_wps_get_bsss_result);
 301         if (reply != TRUE) {
 302                 ERR("Fail to method: Get");
 303
 304                 return -ESRCH;
 305         }
 306
 307         return 0;
 308 }
 309
 310 void netconfig_wifi_wps_signal_scandone(void)
 311 {
 312         wps_bss_list_count = 0;
 313         _netconfig_wifi_wps_get_bsss();
 314
 315         netconfig_is_device_scanning = FALSE;
 316
 317         __netconfig_wps_set_mode(FALSE);
 318 }
 319
 320 void netconfig_wifi_wps_signal_scanaborted(void)
 321 {
 322         wps_bss_list_count = 0;
 323         netconfig_is_wps_scan_aborted = TRUE;
 324         _netconfig_wifi_wps_get_bsss();
 325
 326         netconfig_is_device_scanning = FALSE;
 327
 328         __netconfig_wps_set_mode(FALSE);
 329 }
 330
 331 static int __netconfig_wifi_wps_request_scan(const char *if_path)
 332 {
 333         GDBusConnection *connection = NULL;
 334         GVariant *message = NULL;
 335         GVariantBuilder *builder = NULL;
 336         const char *key1 = "Type";
 337         const char *val1 = "passive";
 338
 339         if (if_path == NULL)
 340                 if_path = netconfig_wifi_get_supplicant_interface();
 341
 342         if (if_path == NULL) {
 343                 DBG("Fail to get wpa_supplicant DBus path");
 344                 return -ESRCH;
 345         }
 346
 347         connection = netdbus_get_connection();
 348         if (connection == NULL) {
 349                 ERR("Failed to get GDBusconnection");
 350                 return -EIO;
 351         }
 352
 353         builder = g_variant_builder_new(G_VARIANT_TYPE("a{sv}"));
 354         g_variant_builder_add(builder, "{sv}", key1, g_variant_new_string(val1));
 355         message = g_variant_new("(@a{sv})", g_variant_builder_end(builder));
 356         g_variant_builder_unref(builder);
 357
 358         g_dbus_connection_call(connection,
 359                         SUPPLICANT_SERVICE,
 360                         if_path,
 361                         SUPPLICANT_INTERFACE ".Interface",
 362                         "Scan",
 363                         message,
 364                         NULL,
 365                         G_DBUS_CALL_FLAGS_NONE,
 366                         NETCONFIG_WPS_DBUS_REPLY_TIMEOUT,
 367                         netdbus_get_cancellable(),
 368                         NULL,
 369                         NULL);
 370
 371         netconfig_is_device_scanning = TRUE;
 372
 373         g_variant_unref(message);
 374         /* Clear bss_info_list for the next scan result */
 375         if (wps_bss_info_list) {
 376                 g_slist_free_full(wps_bss_info_list, g_free);
 377                 wps_bss_info_list = NULL;
 378         }
 379
 380         netconfig_is_wps_scan_aborted = FALSE;
 381
 382         return 0;
 383 }
 384
 385 static void __netconfig_wifi_interface_create_result(
 386                 GObject *source_object, GAsyncResult *res, gpointer user_data)
 387 {
 388         GVariant *message;
 389         gchar *path = NULL;
 390         GDBusConnection *conn = NULL;
 391         GError *error = NULL;
 392
 393         conn = G_DBUS_CONNECTION(source_object);
 394
 395         message = g_dbus_connection_call_finish(conn, res, &error);
 396         if (error == NULL) {
 397                 g_variant_get(message, "(o)", &path);
 398
 399                 if (path) {
 400                         __netconfig_wifi_wps_request_scan(path);
 401                         g_free(path);
 402                 }
 403         } else if (NULL != strstr(error->message, ".InterfaceExists")) {
 404                 INFO("Error Message %s %s", error->message, path);
 405                 g_variant_get(message, "(o)", &path);
 406                 if (path) {
 407                         __netconfig_wifi_wps_request_scan(path);
 408                         g_free(path);
 409                 } else
 410                         __netconfig_wifi_wps_request_scan(NULL);
 411         } else {
 412                 ERR("Failed to create interface, Error: %d[%s]", error->code, error->message);
 413                 __netconfig_wps_set_mode(FALSE);
 414                 wifi_power_driver_and_supplicant(FALSE);
 415         }
 416
 417         g_variant_unref(message);
 418 }
 419
 420 static int  __netconfig_wifi_wps_create_interface(void)
 421 {
 422         GDBusConnection *connection = NULL;
 423         GVariant *message = NULL;
 424         GVariantBuilder *builder = NULL;
 425         const char *key = "Ifname";
 426         const char *val = WIFI_IFNAME;
 427
 428         connection = netdbus_get_connection();
 429         if (connection == NULL) {
 430                 DBG("Failed to get GDBusconnection");
 431                 return -EIO;
 432         }
 433
 434         builder = g_variant_builder_new(G_VARIANT_TYPE("a{sv}"));
 435         g_variant_builder_add(builder, "{sv}", key, g_variant_new_string(val));
 436         message = g_variant_new("(@a{sv})", g_variant_builder_end(builder));
 437
 438         g_dbus_connection_call(connection,
 439                         SUPPLICANT_SERVICE,
 440                         SUPPLICANT_PATH,
 441                         SUPPLICANT_INTERFACE,
 442                         "CreateInterface",
 443                         message,
 444                         NULL,
 445                         G_DBUS_CALL_FLAGS_NONE,
 446                         NETCONFIG_WPS_DBUS_REPLY_TIMEOUT,
 447                         netdbus_get_cancellable(),
 448                         (GAsyncReadyCallback) __netconfig_wifi_interface_create_result,
 449                         NULL);
 450
 451         g_variant_unref(message);
 452
 453         return 0;
 454 }
 455
 456 static int __netconfig_wifi_wps_scan(void)
 457 {
 458         int err = 0;
 459         wifi_tech_state_e wifi_tech_state;
 460
 461         if (netconfig_is_device_scanning == TRUE)
 462                 return -EINPROGRESS;
 463
 464         wifi_tech_state = wifi_state_get_technology_state();
 465         if (wifi_tech_state <= NETCONFIG_WIFI_TECH_OFF)
 466                 err = wifi_power_driver_and_supplicant(TRUE);
 467
 468         if (err < 0 && err != -EALREADY)
 469                 return err;
 470
 471         netconfig_is_device_scanning = TRUE;
 472
 473         DBG("WPS scan requested");
 474         if (wifi_tech_state >= NETCONFIG_WIFI_TECH_POWERED) {
 475                 if (netconfig_wifi_get_scanning() == TRUE)
 476                         return -EINPROGRESS;
 477
 478                 netconfig_wifi_bgscan_start(TRUE);
 479
 480                 if (wifi_tech_state == NETCONFIG_WIFI_TECH_CONNECTED)
 481                         __netconfig_wifi_wps_request_scan(NULL);
 482         } else {
 483                 err = __netconfig_wifi_wps_create_interface();
 484         }
 485
 486         return err;
 487 }
 488
 489 gboolean handle_request_wps_scan(Wifi *wifi, GDBusMethodInvocation *context)
 490 {
 491         int err, enabled = 0;
 492         wifi_tech_state_e tech_state;
 493
 494         g_return_val_if_fail(wifi != NULL, FALSE);
 495
 496         if (netconfig_is_wifi_tethering_on() == TRUE) {
 497                 ERR("Wi-Fi Tethering is enabled");
 498                 netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_NO_SERVICE, "TetheringEnabled");
 499                 return -EBUSY;
 500         }
 501
 502 #if !defined TIZEN_WEARABLE
 503         if (netconfig_wifi_is_bgscan_paused()) {
 504                 ERR("Scan is paused");
 505                 netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_NO_SERVICE, "ScanPaused");
 506                 return FALSE;
 507         }
 508 #endif
 509
 510         tech_state = wifi_state_get_technology_state();
 511         if (tech_state <= NETCONFIG_WIFI_TECH_OFF) {
 512 #if !defined TIZEN_WEARABLE
 513                 netconfig_vconf_get_int(VCONF_WIFI_ALWAYS_ALLOW_SCANNING, &enabled);
 514 #else
 515                 enabled = 0;
 516 #endif
 517
 518                 if (enabled == 0) {
 519                         netconfig_error_permission_denied(context);
 520                         return FALSE;
 521                 }
 522         }
 523
 524         __netconfig_wps_set_mode(TRUE);
 525
 526         err = __netconfig_wifi_wps_scan();
 527         if (err < 0) {
 528                 if (err == -EINPROGRESS)
 529                         netconfig_error_inprogress(context);
 530                 else
 531                         netconfig_error_wifi_driver_failed(context);
 532
 533                 return FALSE;
 534         }
 535
 536         wifi_complete_request_wps_scan(wifi, context);
 537         return TRUE;
 538 }
 539
 540 static void __interface_wps_cancel_result(GObject *source_object,
 541                         GAsyncResult *res, gpointer user_data)
 542 {
 543         GVariant *reply;
 544         GDBusConnection *conn = NULL;
 545         GError *error = NULL;
 546
 547         conn = G_DBUS_CONNECTION(source_object);
 548         reply = g_dbus_connection_call_finish(conn, res, &error);
 549
 550         if (reply == NULL) {
 551                 if (error != NULL) {
 552                         ERR("Fail to request status [%d: %s]",
 553                                         error->code, error->message);
 554                         g_error_free(error);
 555                 } else {
 556                         ERR("Fail torequest status");
 557                 }
 558         } else {
 559                 DBG("Successfully M/W--->WPAS: Interface.WPS.Cancel Method");
 560         }
 561
 562         g_variant_unref(reply);
 563         netconfig_gdbus_pending_call_unref();
 564 }
 565
 566 static gboolean __netconfig_wifi_invoke_wps_cancel()
 567 {
 568         gboolean reply = FALSE;
 569         const char *if_path = NULL;
 570
 571         if_path = netconfig_wifi_get_supplicant_interface();
 572         if (if_path == NULL) {
 573                 DBG("Fail to get wpa_supplicant DBus path");
 574                 return -ESRCH;
 575         }
 576
 577         DBG("M/W--->WPAS: Interface.WPS.Cancel Method");
 578
 579         reply = netconfig_invoke_dbus_method_nonblock(SUPPLICANT_SERVICE,
 580                         if_path, SUPPLICANT_IFACE_WPS,
 581                         "Cancel", NULL, __interface_wps_cancel_result);
 582
 583         if (reply != TRUE)
 584                 ERR("M/W--->WPAS: Interface.WPS.Cancel Method Failed");
 585
 586         return reply;
 587 }
 588
 589 gboolean netconfig_iface_wifi_request_wps_cancel(Wifi *wifi, GDBusMethodInvocation **context)
 590 {
 591         if (TIZEN_TV) {
 592                 DBG("Received WPS PBC Cancel Request");
 593                 g_return_val_if_fail(wifi != NULL, FALSE);
 594                 return __netconfig_wifi_invoke_wps_cancel();
 595         } else {
 596                 /*Not supported for mobile and Wearable profile*/
 597                 return FALSE;
 598         }
 599 }