src/wifi-power.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 <vconf-keys.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <glib.h>
  26 #include <tzplatform_config.h>
  27
  28 #include "log.h"
  29 #include "util.h"
  30 #include "netdbus.h"
  31 #include "neterror.h"
  32 #include "wifi-wps.h"
  33 #include "wifi-bssid-scan.h"
  34 #include "wifi-power.h"
  35 #include "wifi-state.h"
  36 #include "netsupplicant.h"
  37 #include "network-state.h"
  38 #include "network-dpm.h"
  39 #include "wifi-firmware.h"
  40 #include "wifi-background-scan.h"
  41
  42
  43 #define WLAN_SUPPLICANT_SCRIPT          "/usr/bin/wpa_supp.sh"
  44 #define P2P_SUPPLICANT_SCRIPT           "/usr/bin/p2p_supp.sh"
  45
  46 #define VCONF_WIFI_OFF_STATE_BY_AIRPLANE        "file/private/wifi/wifi_off_by_airplane"
  47 #define VCONF_WIFI_OFF_STATE_BY_RESTRICTED      "file/private/wifi/wifi_off_by_restricted"
  48 #define VCONF_WIFI_OFF_STATE_BY_EMERGENCY       "file/private/wifi/wifi_off_by_emergency"
  49 #if defined TIZEN_WEARABLE
  50 #define VCONF_WIFI_WEARABLE_WIFI_USE                    "db/private/wifi/wearable_wifi_use"
  51 #endif
  52 #if !defined TIZEN_WEARABLE
  53 #define VCONFKEY_SETAPPL_NETWORK_PERMIT_WITH_LCD_OFF_LIMIT      "db/setting/network_with_lcd_off_limit"
  54 #endif
  55
  56 #define WLAN_MAC_ADDRESS_FILEPATH   "/sys/class/net/wlan0/address"
  57 #define WLAN_MAC_ADDR_MAX           20
  58 #define VCONF_WIFI_BSSID_ADDRESS        "db/wifi/bssid_address"
  59
  60 #define ETH_MAC_ADDR_SIZE 6
  61 #define VCONF_ETH_MAC_ADDRESS  "db/dnet/mac_address"
  62 #define NET_EXEC_PATH "/sbin/ifconfig"
  63 #define OS_RANDOM_FILE "/dev/urandom"
  64
  65 static gboolean connman_wifi_technology_state = FALSE;
  66 static gboolean wifi_firmware_recovery_mode = FALSE;
  67 static int airplane_mode = 0;
  68
  69 #if defined TIZEN_WEARABLE
  70 static int psmode_wifi_use = 1;
  71 #endif
  72
  73 static gboolean __is_wifi_restricted(void)
  74 {
  75 #if defined TIZEN_WEARABLE
  76         return FALSE;
  77 #endif
  78         int restricted_mode = 0;
  79
  80         netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE, &restricted_mode);
  81         if (restricted_mode != 0) {
  82                 DBG("network restricted mode[%d]", restricted_mode);
  83                 return TRUE;
  84         }
  85
  86         return FALSE;
  87 }
  88
  89 static void __technology_reply(GObject *source_object, GAsyncResult *res, gpointer user_data)
  90 {
  91         GVariant *reply;
  92         GDBusConnection *conn = NULL;
  93         GError *error = NULL;
  94
  95         conn = G_DBUS_CONNECTION(source_object);
  96         reply = g_dbus_connection_call_finish(conn, res, &error);
  97
  98         if (reply == NULL) {
  99                 if (error != NULL) {
 100                         if (g_strstr_len(error->message, strlen(error->message),
 101                                         CONNMAN_ERROR_INTERFACE ".AlreadyEnabled") != NULL) {
 102                                 wifi_state_update_power_state(TRUE);
 103                         } else if (g_strstr_len(error->message, strlen(error->message),
 104                                         CONNMAN_ERROR_INTERFACE ".AlreadyDisabled") != NULL) {
 105                                 wifi_state_update_power_state(FALSE);
 106                         } else {
 107                                 ERR("Fail to request status [%d: %s]", error->code, error->message);
 108                                 wifi_state_update_power_state(FALSE);
 109                         }
 110                         g_error_free(error);
 111                 } else {
 112                         ERR("Fail to request status");
 113                         wifi_state_update_power_state(FALSE);
 114                 }
 115         } else {
 116                 DBG("Successfully requested");
 117         }
 118
 119         g_variant_unref(reply);
 120         netconfig_gdbus_pending_call_unref();
 121 }
 122
 123 static int __execute_supplicant(gboolean enable)
 124 {
 125         int rv = 0;
 126         const char *path = WLAN_SUPPLICANT_SCRIPT;
 127         char *const args_enable[] = { "/usr/bin/wpa_supp.sh", "start", NULL };
 128         char *const args_disable[] = { "/usr/bin/wpa_supp.sh", "stop", NULL };
 129         char *const envs[] = { NULL };
 130         static gboolean enabled = FALSE;
 131
 132         if (enabled == enable)
 133                 return -EALREADY;
 134
 135         if (enable == TRUE)
 136                 rv = netconfig_execute_file(path, args_enable, envs);
 137         else
 138                 rv = netconfig_execute_file(path, args_disable, envs);
 139         if (rv < 0)
 140                 return -EIO;
 141
 142         DBG("wpa_supplicant %s", enable == TRUE ? "started" : "stopped");
 143
 144         enabled = enable;
 145
 146         return 0;
 147 }
 148
 149 void netconfig_wifi_recover_firmware(void)
 150 {
 151         wifi_firmware_recovery_mode = TRUE;
 152
 153         netconfig_wifi_bgscan_stop();
 154
 155         wifi_power_off();
 156 }
 157
 158 static int _load_driver_and_supplicant(void)
 159 {
 160         int err = 0;
 161         wifi_tech_state_e tech_state;
 162
 163         tech_state = wifi_state_get_technology_state();
 164         if (tech_state > NETCONFIG_WIFI_TECH_OFF)
 165                 return -EALREADY;
 166
 167         err = __execute_supplicant(TRUE);
 168         if (err < 0 && err != -EALREADY)
 169                 return err;
 170
 171         err = netconfig_wifi_firmware(NETCONFIG_WIFI_STA, TRUE);
 172         if (err < 0 && err != -EALREADY) {
 173                 __execute_supplicant(FALSE);
 174                 return err;
 175         }
 176
 177         wifi_state_set_tech_state(NETCONFIG_WIFI_TECH_WPS_ONLY);
 178
 179         return 0;
 180 }
 181
 182 static int _remove_driver_and_supplicant(void)
 183 {
 184         int err = 0;
 185
 186         INFO("remove driver and supplicant");
 187         if (wifi_firmware_recovery_mode != TRUE &&
 188                                         netconfig_wifi_is_bssid_scan_started() == TRUE) {
 189                 DBG("Wi-Fi WPS mode");
 190                 return 0;
 191         }
 192
 193         err = netconfig_wifi_firmware(NETCONFIG_WIFI_STA, FALSE);
 194         if (err < 0 && err != -EALREADY)
 195                 return err;
 196
 197         err = __execute_supplicant(FALSE);
 198         if (err < 0 && err != -EALREADY)
 199                 return err;
 200
 201         wifi_state_set_tech_state(NETCONFIG_WIFI_TECH_OFF);
 202
 203         // reset service state
 204         wifi_state_set_service_state(NETCONFIG_WIFI_IDLE);
 205
 206         if (wifi_firmware_recovery_mode == TRUE) {
 207                 if (wifi_power_on() < 0)
 208                         ERR("Failed to recover Wi-Fi firmware");
 209
 210                 wifi_firmware_recovery_mode = FALSE;
 211         }
 212
 213         return 0;
 214 }
 215
 216 static int _set_connman_technology_power(gboolean enable)
 217 {
 218         gboolean reply = FALSE;
 219         GVariant *param0 = NULL;
 220         GVariant *params = NULL;
 221         char key[] = "Powered";
 222         gboolean value_enable = TRUE;
 223         gboolean value_disable = FALSE;
 224
 225         if (connman_wifi_technology_state == enable)
 226                 return -EALREADY;
 227
 228         if (enable == TRUE)
 229                 param0 = g_variant_new_boolean(value_enable);
 230         else
 231                 param0 = g_variant_new_boolean(value_disable);
 232
 233         params = g_variant_new("(sv)", key, param0);
 234
 235         reply = netconfig_invoke_dbus_method_nonblock(CONNMAN_SERVICE,
 236                                         CONNMAN_WIFI_TECHNOLOGY_PREFIX, CONNMAN_TECHNOLOGY_INTERFACE,
 237                                         "SetProperty", params, __technology_reply);
 238
 239         if (reply != TRUE) {
 240                 ERR("Fail to set technology %s", enable == TRUE ? "enable" : "disable");
 241                 return -ESRCH;
 242         }
 243
 244         /* If Wi-Fi powered off,
 245          * Do not remove Wi-Fi driver until ConnMan technology state updated
 246          */
 247         if (enable == TRUE)
 248                 connman_wifi_technology_state = enable;
 249
 250         /* To be keep safe, early disable Wi-Fi tech state */
 251         if (enable != TRUE)
 252                 wifi_state_set_tech_state(NETCONFIG_WIFI_TECH_WPS_ONLY);
 253
 254         return 0;
 255 }
 256
 257 static void __netconfig_set_wifi_bssid(void)
 258 {
 259         int rv = 0;
 260         char bssid[WLAN_MAC_ADDR_MAX];
 261
 262         FILE *fp = fopen(WLAN_MAC_ADDRESS_FILEPATH, "r");
 263
 264         if (fp == NULL) {
 265                 ERR("Fail to open %s", WLAN_MAC_ADDRESS_FILEPATH);
 266                 return;
 267         }
 268
 269         fseek(fp, 0L, SEEK_SET);
 270         rv = fscanf(fp, "%17s", bssid);
 271
 272         if (rv < 0)
 273                 ERR("Fail to read bssid");
 274
 275         netconfig_set_vconf_str(VCONF_WIFI_BSSID_ADDRESS, bssid);
 276
 277         fclose(fp);
 278 }
 279
 280 void netconfig_wifi_disable_technology_state_by_only_connman_signal(void)
 281 {
 282         /* Important: it's only done by ConnMan technology signal update */
 283         connman_wifi_technology_state = FALSE;
 284 }
 285
 286 #if defined TIZEN_WEARABLE
 287 int netconfig_wifi_on_wearable(gboolean device_picker_test)
 288 {
 289         int err = 0;
 290         int wifi_use;
 291         int ps_mode;
 292
 293         if (netconfig_vconf_get_int(VCONF_WIFI_WEARABLE_WIFI_USE, &wifi_use) < 0) {
 294                 ERR("Fail to get VCONF_WIFI_WEARABLE_WIFI_USE");
 295                 return -EIO;
 296         }
 297
 298         if (wifi_use > 0) {
 299                 if (netconfig_vconf_get_int(VCONFKEY_SETAPPL_PSMODE, &ps_mode) < 0) {
 300                         ERR("Fail to get VCONFKEY_SETAPPL_PSMODE");
 301                         return -EIO;
 302                 }
 303
 304                 if (ps_mode > SETTING_PSMODE_NORMAL) {
 305                         WARN("ps mode is on(%d), Not turn on Wi-Fi", ps_mode);
 306                         return -EPERM;
 307                 }
 308         } else {
 309                 WARN("Not permitted Wi-Fi on");
 310                 return -EPERM;
 311         }
 312
 313         err = wifi_power_driver_and_supplicant(TRUE);
 314         if (err < 0 && err != -EALREADY)
 315                 return err;
 316
 317         err = _set_connman_technology_power(TRUE);
 318
 319         if (device_picker_test == TRUE)
 320                 netconfig_wifi_enable_device_picker_test();
 321
 322         return err;
 323 }
 324
 325 static void __wearable_wifi_use_changed_cb(keynode_t* node, void* user_data)
 326 {
 327         int wifi_state;
 328         int wifi_use = 1;
 329
 330         if (netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state) < 0) {
 331                 ERR("Fail to get VCONFKEY_WIFI_STATE");
 332                 return;
 333         }
 334
 335         if (node != NULL)
 336                 wifi_use = vconf_keynode_get_int(node);
 337         else
 338                 netconfig_vconf_get_int(VCONF_WIFI_WEARABLE_WIFI_USE, &wifi_use);
 339
 340         if (wifi_use > 0) {
 341                 DBG("wifi use on");
 342                 if (wifi_state > VCONFKEY_WIFI_OFF) {
 343                         WARN("Wi-Fi is already turned on");
 344                         return;
 345                 }
 346                 wifi_power_on_wearable(TRUE);
 347         } else {
 348                 ERR("## wifi use [OFF]");
 349                 if (wifi_state == VCONFKEY_WIFI_OFF) {
 350                         WARN("Wi-Fi is already turned off");
 351                         return;
 352                 }
 353
 354                 wifi_power_off();
 355         }
 356 }
 357 #else
 358 static void __netconfig_wifi_restrict_mode(keynode_t *node, void *user_data)
 359 {
 360         int wifi_state = 0, restricted = 0;
 361         int wifi_off_by_restricted = 0;
 362
 363         netconfig_vconf_get_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, &wifi_off_by_restricted);
 364
 365         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 366
 367         if (node != NULL)
 368                 restricted = vconf_keynode_get_bool(node);
 369         else
 370                 netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE, &restricted);
 371
 372         DBG("network restricted mode %s", restricted > 0 ? "ON" : "OFF");
 373         DBG("Wi-Fi state %d, Wi-Fi was off by restricted mode %s", wifi_state,
 374                         wifi_off_by_restricted ? "Yes" : "No");
 375
 376         if (restricted > 0) {
 377                 /* network restricted on */
 378                 if (wifi_state == VCONFKEY_WIFI_OFF)
 379                         return;
 380
 381                 wifi_power_off();
 382
 383                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, 1);
 384         } else {
 385                 /* network restricted off */
 386                 if (!wifi_off_by_restricted)
 387                         return;
 388
 389                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, 0);
 390
 391                 if (wifi_state > VCONFKEY_WIFI_OFF)
 392                         return;
 393
 394                 wifi_power_on();
 395         }
 396 }
 397 #endif
 398
 399 static void __netconfig_wifi_airplane_mode(keynode_t *node, void *user_data)
 400 {
 401         int wifi_state = 0, airplane_state = 0;
 402         int wifi_off_by_airplane = 0;
 403
 404         netconfig_vconf_get_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, &wifi_off_by_airplane);
 405
 406 #if defined TIZEN_WEARABLE
 407         netconfig_vconf_get_int(VCONF_WIFI_WEARABLE_WIFI_USE, &wifi_state)
 408 #else
 409         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 410 #endif
 411
 412         if (node != NULL)
 413                 airplane_state = vconf_keynode_get_bool(node);
 414         else
 415                 netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_FLIGHT_MODE, &airplane_state);
 416
 417         DBG("airplane mode %s (prev:%d)", airplane_state > 0 ? "ON" : "OFF", airplane_mode);
 418         DBG("Wi-Fi state(or use) %d, Wi-Fi was off by flight mode %s", wifi_state,
 419                         wifi_off_by_airplane ? "Yes" : "No");
 420
 421         if (airplane_mode == airplane_state)
 422                 return ;
 423
 424         airplane_mode = airplane_state;
 425
 426         if (airplane_state > 0) {
 427                 /* airplane mode on */
 428                 if (wifi_state == VCONFKEY_WIFI_OFF)
 429                         return;
 430
 431                 wifi_power_off();
 432
 433                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 1);
 434 #if defined TIZEN_WEARABLE
 435                 netconfig_set_vconf_int(VCONF_WIFI_WEARABLE_WIFI_USE, 0);
 436 #endif
 437         } else {
 438                 /* airplane mode off */
 439                 if (!wifi_off_by_airplane)
 440                         return;
 441
 442                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0);
 443 #if defined TIZEN_WEARABLE
 444                 netconfig_set_vconf_int(VCONF_WIFI_WEARABLE_WIFI_USE, 1);
 445 #else
 446                 if (wifi_state > VCONFKEY_WIFI_OFF)
 447                         return;
 448
 449                 wifi_power_on();
 450 #endif
 451         }
 452 }
 453
 454 static void __emergency_mode_changed_cb(keynode_t *node, void *user_data)
 455 {
 456         int wifi_state = 0, emergency = 0;
 457         int wifi_off_by_emergency = 0;
 458 #if !defined TIZEN_WEARABLE
 459         int emergency_by_fmm = 0;
 460 #endif
 461 #if defined TIZEN_WEARABLE
 462         int wifi_use = 1;
 463 #endif
 464
 465         netconfig_vconf_get_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, &wifi_off_by_emergency);
 466         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 467
 468 #if !defined TIZEN_WEARABLE
 469         netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_PERMIT_WITH_LCD_OFF_LIMIT, &emergency_by_fmm);
 470         DBG("emergency mode by Find My Mobile (%d)", emergency_by_fmm);
 471         if (emergency_by_fmm == 1)
 472                 return;
 473 #endif
 474
 475         if (node != NULL)
 476                 emergency = vconf_keynode_get_int(node);
 477         else
 478                 netconfig_vconf_get_int(VCONFKEY_SETAPPL_PSMODE, &emergency);
 479
 480         DBG("emergency mode %s", emergency > SETTING_PSMODE_POWERFUL ? "ON" : "OFF");
 481         DBG("Wi-Fi state %d, Wi-Fi was off by emergency mode %s", wifi_state, wifi_off_by_emergency ? "Yes" : "No");
 482
 483 #if defined TIZEN_WEARABLE
 484         if (emergency == SETTING_PSMODE_WEARABLE) {
 485                 /* basic power saving mode on */
 486         } else if (emergency == SETTING_PSMODE_WEARABLE_ENHANCED) {
 487                 /* enhanced power saving mode on */
 488                 netconfig_vconf_get_int(VCONF_WIFI_WEARABLE_WIFI_USE, &wifi_use);
 489                 psmode_wifi_use = wifi_use;
 490                 if (wifi_use != 0)
 491                         netconfig_set_vconf_int(VCONF_WIFI_WEARABLE_WIFI_USE, 0);
 492
 493                 if (wifi_state == VCONFKEY_WIFI_OFF)
 494                         return;
 495
 496                 wifi_power_off();
 497                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 1);
 498         } else {
 499                 /* power saving mode off */
 500                 netconfig_set_vconf_int(VCONF_WIFI_WEARABLE_WIFI_USE, psmode_wifi_use);
 501                 if (!wifi_off_by_emergency)
 502                         return;
 503
 504                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 0);
 505                 if (wifi_state > VCONFKEY_WIFI_OFF)
 506                         return;
 507
 508                 wifi_power_on_wearable(TRUE);
 509         }
 510 #else
 511         if (emergency > SETTING_PSMODE_POWERFUL) {
 512                 /* emergency mode on */
 513                 if (wifi_state == VCONFKEY_WIFI_OFF)
 514                         return;
 515
 516                 wifi_power_off();
 517
 518                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 1);
 519         } else {
 520                 /* emergency mode off */
 521                 if (!wifi_off_by_emergency)
 522                         return;
 523
 524                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 0);
 525
 526                 if (wifi_state > VCONFKEY_WIFI_OFF)
 527                         return;
 528
 529                 wifi_power_on();
 530         }
 531 #endif
 532
 533 }
 534
 535 static void __pm_state_changed_cb(keynode_t* node, void* user_data)
 536 {
 537         int new_state = -1;
 538         int wifi_state = 0;
 539         static int prev_state = VCONFKEY_PM_STATE_NORMAL;
 540
 541         if (netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state) < 0) {
 542                 ERR("Fail to get VCONFKEY_WIFI_STATE");
 543                 return;
 544         }
 545
 546         /* PM state
 547          *      VCONFKEY_PM_STATE_NORMAL = 1,
 548          *      VCONFKEY_PM_STATE_LCDDIM,
 549          *      VCONFKEY_PM_STATE_LCDOFF,
 550          *      VCONFKEY_PM_STATE_SLEEP
 551          */
 552         if (node != NULL)
 553                 new_state = vconf_keynode_get_int(node);
 554         else
 555                 netconfig_vconf_get_int(VCONFKEY_PM_STATE, &new_state);
 556
 557         DBG("wifi state: %d (0 off / 1 on / 2 connected)", wifi_state);
 558         DBG("Old PM state: %d, current: %d", prev_state, new_state);
 559
 560         if ((new_state == VCONFKEY_PM_STATE_NORMAL) && (prev_state >= VCONFKEY_PM_STATE_LCDOFF)) {
 561                 netconfig_wifi_bgscan_stop();
 562                 netconfig_wifi_bgscan_start(TRUE);
 563         }
 564
 565         prev_state = new_state;
 566 }
 567
 568 static void __netconfig_telephony_ready_changed_cb(keynode_t * node, void *data)
 569 {
 570         int telephony_ready = 0;
 571
 572         if (node != NULL)
 573                 telephony_ready = vconf_keynode_get_bool(node);
 574         else
 575                 netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_READY, &telephony_ready);
 576
 577         if (telephony_ready != 0) {
 578                 if (netconfig_tapi_check_sim_state() == FALSE) {
 579                         DBG("Sim is not initialized yet.");
 580
 581                         goto done;
 582                 }
 583         } else
 584                 return;
 585
 586         DBG("Turn Wi-Fi on automatically");
 587
 588 #if defined TIZEN_WEARABLE
 589         wifi_power_on_wearable(TRUE);
 590 #else
 591         wifi_power_on();
 592 #endif
 593
 594 done:
 595         vconf_ignore_key_changed(VCONFKEY_TELEPHONY_READY, __netconfig_telephony_ready_changed_cb);
 596 }
 597
 598 int wifi_power_driver_and_supplicant(gboolean enable)
 599 {
 600         /* There are 3 thumb rules for Wi-Fi power management
 601          *   1. Do not make exposed API to control wpa_supplicant and driver directly.
 602          *      It probably breaks ConnMan technology operation.
 603          *
 604          *   2. Do not remove driver and wpa_supplicant if ConnMan already enabled.
 605          *      It breaks ConnMan technology operation.
 606          *
 607          *   3. Final the best rule: make it as simple as possible.
 608          *      Simple code enables easy maintenance and reduces logical errors.
 609          */
 610         if (enable == TRUE) {
 611                 return _load_driver_and_supplicant();
 612         } else {
 613                 if (connman_wifi_technology_state == TRUE)
 614                         return -ENOSYS;
 615
 616                 return _remove_driver_and_supplicant();
 617         }
 618 }
 619
 620 void wifi_power_disable_technology_state_by_only_connman_signal(void)
 621 {
 622         /* Important: it's only done by ConnMan technology signal update */
 623         connman_wifi_technology_state = FALSE;
 624 }
 625
 626 void wifi_power_recover_firmware(void)
 627 {
 628         wifi_firmware_recovery_mode = TRUE;
 629
 630         netconfig_wifi_bgscan_stop();
 631
 632         wifi_power_off();
 633 }
 634
 635 int wifi_power_on(void)
 636 {
 637         int err = 0;
 638         wifi_tech_state_e tech_state;
 639
 640         tech_state = wifi_state_get_technology_state();
 641         if (tech_state >= NETCONFIG_WIFI_TECH_POWERED) {
 642                 /* There can be a scenario where wifi is automatically *
 643                  * activated by connman if wifi was powered in last boot. *
 644                  * So we should update connman_wifi_technology_state variable *
 645                  * if it is found that wifi_tech_state variable is *
 646                  * NETCONFIG_WIFI_TECH_POWERED and connman_wifi_technology_state *
 647                  * variable is FALSE. Earlier connman_wifi_technology_state *
 648                  * variable was only updated when wifi was Powered on from *
 649                  * net-config resulting in variable not getting updated. *
 650                  * This caused wifi to not get deactivated after reboot if *
 651                  * last power state was activated */
 652                 ERR("Net-Config WiFi connman technology state %d",
 653                                 connman_wifi_technology_state);
 654                 if (connman_wifi_technology_state == FALSE)
 655                         connman_wifi_technology_state = TRUE;
 656                 return -EALREADY;
 657         }
 658
 659         if (__is_wifi_restricted() == TRUE)
 660                 return -EPERM;
 661
 662         if (netconfig_is_wifi_tethering_on() == TRUE) {
 663                 /* TODO: Wi-Fi tethering turns off here */
 664                 /* return TRUE; */
 665                 ERR("Failed to turn tethering off");
 666                 return -EBUSY;
 667         }
 668
 669         err = wifi_power_driver_and_supplicant(TRUE);
 670         if (err < 0 && err != -EALREADY)
 671                 return err;
 672
 673         err = _set_connman_technology_power(TRUE);
 674
 675         return err;
 676 }
 677
 678 int wifi_power_off(void)
 679 {
 680         int err;
 681
 682         err = _set_connman_technology_power(FALSE);
 683         if (err == -EALREADY)
 684                 wifi_state_update_power_state(FALSE);
 685
 686         return 0;
 687 }
 688
 689 #if defined TIZEN_WEARABLE
 690 int wifi_power_on_wearable(gboolean device_picker_test)
 691 {
 692         int err = 0;
 693         int wifi_use = 1;
 694         wifi_tech_state_e tech_state;
 695
 696         tech_state = wifi_state_get_technology_state();
 697         if (tech_state >= NETCONFIG_WIFI_TECH_POWERED)
 698                 return -EALREADY;
 699
 700         if (netconfig_vconf_get_int(VCONF_WIFI_WEARABLE_WIFI_USE, &wifi_use) < 0) {
 701                 ERR("Fail to get VCONF_WIFI_WEARABLE_WIFI_USE");
 702                 return -EIO;
 703         }
 704
 705         if (wifi_use == 0) {
 706                 WARN("VCONF_WIFI_WEARABLE_WIFI_USE is OFF");
 707                 return -EPERM;
 708         }
 709
 710         err = wifi_power_driver_and_supplicant(TRUE);
 711         if (err < 0 && err != -EALREADY)
 712                 return err;
 713
 714         err = _set_connman_technology_power(TRUE);
 715
 716         if (device_picker_test == TRUE)
 717                 netconfig_wifi_enable_device_picker_test();
 718
 719         return err;
 720 }
 721 #endif
 722
 723 void wifi_power_initialize(void)
 724 {
 725         int wifi_last_power_state = 0;
 726
 727         /* Initialize Airplane mode */
 728         netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_FLIGHT_MODE, &airplane_mode);
 729         DBG("Airplane[%s]", airplane_mode > 0 ? "ON" : "OFF");
 730
 731         /* Update the last Wi-Fi power state */
 732         netconfig_vconf_get_int(VCONF_WIFI_LAST_POWER_STATE, &wifi_last_power_state);
 733         if (wifi_last_power_state > VCONFKEY_WIFI_OFF) {
 734                 if (TIZEN_TELEPHONY_ENABLE) {
 735                         int telephony_ready = 0;
 736                         netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_READY, &telephony_ready);
 737                         if (telephony_ready == 0) {
 738                                 DBG("Telephony API is not initialized yet");
 739                                 vconf_notify_key_changed(VCONFKEY_TELEPHONY_READY,
 740                                                 __netconfig_telephony_ready_changed_cb, NULL);
 741                         } else {
 742                                 if (netconfig_tapi_check_sim_state() == FALSE)
 743                                         DBG("SIM is not initialized yet");
 744                         }
 745                 }
 746                 DBG("Turn Wi-Fi on automatically");
 747 #if defined TIZEN_WEARABLE
 748                 wifi_power_on_wearable(TRUE);
 749 #else
 750                 wifi_power_on();
 751 #endif
 752         }
 753
 754 #if defined TIZEN_WEARABLE
 755         vconf_notify_key_changed(VCONF_WIFI_WEARABLE_WIFI_USE, __wearable_wifi_use_changed_cb, NULL);
 756
 757         vconf_notify_key_changed(VCONFKEY_TELEPHONY_FLIGHT_MODE,
 758                         __netconfig_wifi_airplane_mode, NULL);
 759 #else
 760         vconf_notify_key_changed(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE,
 761                         __netconfig_wifi_restrict_mode, NULL);
 762         vconf_notify_key_changed(VCONFKEY_TELEPHONY_FLIGHT_MODE,
 763                         __netconfig_wifi_airplane_mode, NULL);
 764 #endif
 765
 766         vconf_notify_key_changed(VCONFKEY_SETAPPL_PSMODE, __emergency_mode_changed_cb, NULL);
 767         vconf_notify_key_changed(VCONFKEY_PM_STATE, __pm_state_changed_cb, NULL);
 768 }
 769
 770 void wifi_power_deinitialize(void)
 771 {
 772 }
 773
 774 gboolean handle_load_driver(Wifi *wifi,
 775                 GDBusMethodInvocation *context, gboolean device_picker_test)
 776 {
 777         int err;
 778
 779         DBG("Wi-Fi power on requested");
 780
 781         g_return_val_if_fail(wifi != NULL, FALSE);
 782
 783         if (!netconfig_dpm_update_from_wifi()) {
 784                 DBG("DPM policy restricts Wi-Fi");
 785                 netconfig_error_permission_denied(context);
 786                 return TRUE;
 787         }
 788
 789         if (TIZEN_WLAN_BOARD_SPRD)
 790                 wifi_firmware_download();
 791
 792 #if defined TIZEN_WEARABLE
 793         err = wifi_power_on_wearable(device_picker_test);
 794 #else
 795         err = wifi_power_on();
 796
 797         if (device_picker_test == TRUE)
 798                 netconfig_wifi_enable_device_picker_test();
 799 #endif
 800         if (err < 0) {
 801                 if (err == -EINPROGRESS)
 802                         netconfig_error_inprogress(context);
 803                 else if (err == -EALREADY)
 804                         netconfig_error_already_exists(context);
 805                 else if (err == -EPERM)
 806                         netconfig_error_permission_denied(context);
 807                 else
 808                         netconfig_error_wifi_driver_failed(context);
 809
 810                 return TRUE;
 811         }
 812
 813
 814         netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0);
 815         __netconfig_set_wifi_bssid();
 816
 817         wifi_complete_load_driver(wifi, context);
 818         return TRUE;
 819 }
 820
 821 gboolean handle_remove_driver(Wifi *wifi, GDBusMethodInvocation *context)
 822 {
 823         int err;
 824
 825         DBG("Wi-Fi power off requested");
 826
 827         g_return_val_if_fail(wifi != NULL, FALSE);
 828
 829         err = wifi_power_off();
 830         if (err < 0) {
 831                 if (err == -EINPROGRESS)
 832                         netconfig_error_inprogress(context);
 833                 else if (err == -EALREADY)
 834                         netconfig_error_already_exists(context);
 835                 else if (err == -EPERM)
 836                         netconfig_error_permission_denied(context);
 837                 else
 838                         netconfig_error_wifi_driver_failed(context);
 839                 return TRUE;
 840         }
 841
 842         netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0);
 843
 844         wifi_complete_remove_driver(wifi, context);
 845         return TRUE;
 846 }
 847
 848 gboolean handle_load_p2p_driver(Wifi *wifi, GDBusMethodInvocation *context)
 849 {
 850         ERR("Deprecated");
 851
 852         wifi_complete_load_p2p_driver(wifi, context);
 853         return TRUE;
 854 }
 855
 856 gboolean handle_remove_p2p_driver(Wifi *wifi, GDBusMethodInvocation *context)
 857 {
 858         ERR("Deprecated");
 859
 860         wifi_complete_remove_p2p_driver(wifi, context);
 861         return TRUE;
 862 }
 863
 864 static int __netconfig_get_random_mac(unsigned char *mac_buf, int mac_len)
 865 {
 866         DBG("Generate Random Mac address of ethernet");
 867         FILE *fp;
 868         int rc;
 869
 870         fp = fopen(OS_RANDOM_FILE, "rb");
 871
 872         if (fp == NULL) {
 873                 ERR("Could not open /dev/urandom");
 874                 return -1;
 875         }
 876         rc = fread(mac_buf, 1, mac_len, fp);
 877         if (fp)
 878                 fclose(fp);
 879
 880         return rc != mac_len ? -1 : 0;
 881 }
 882
 883 void __netconfig_set_ether_macaddr()
 884 {
 885         DBG("Set wired Mac address ");
 886         char *mac_addr = NULL;
 887         char rand_addr[WLAN_MAC_ADDR_MAX];
 888         int rv = -1;
 889
 890         mac_addr = vconf_get_str(VCONF_ETH_MAC_ADDRESS);
 891         if (mac_addr == NULL) {
 892                 DBG("vconf_get_str Failed\n");
 893                 return;
 894         }
 895         /* Checking Invalid MAC Address */
 896         if ((strlen(mac_addr) == 0)) {
 897                 ERR("Failed to get valid MAC Address from vconf");
 898                 /*Generate the Random Mac address*/
 899                 unsigned char rand_mac_add[ETH_MAC_ADDR_SIZE+1];
 900
 901                 if (__netconfig_get_random_mac(rand_mac_add, ETH_MAC_ADDR_SIZE) == -1) {
 902
 903                         ERR("Could not generate the Random Mac address");
 904                         free(mac_addr);
 905                         return;
 906                 }
 907
 908                 rand_mac_add[0] &= 0xFE; /*Clear multicase bit*/
 909                 rand_mac_add[0] |= 0x02; /*set local assignment bit*/
 910
 911                 /*Set the Mac address in Vconf*/
 912                 snprintf(rand_addr, WLAN_MAC_ADDR_MAX, "%x:%x:%x:%x:%x:%x",
 913                                 rand_mac_add[0], rand_mac_add[1],
 914                                 rand_mac_add[2], rand_mac_add[3],
 915                                 rand_mac_add[4], rand_mac_add[5]);
 916
 917                 netconfig_set_vconf_str(VCONF_ETH_MAC_ADDRESS, rand_addr);
 918         } else { /* Valid MAC address */
 919                 g_strlcpy(rand_addr, mac_addr, WLAN_MAC_ADDR_MAX);
 920         }
 921
 922         DBG("MAC Address of eth0 [%s]", rand_addr);
 923         const char *path = NET_EXEC_PATH;
 924         char *const args[] = { "/sbin/ifconfig", "eth0", "hw",
 925                 "ether", rand_addr, "up", NULL};
 926         char *const envs[] = { NULL };
 927         rv = netconfig_execute_file(path, args, envs);
 928
 929         if (rv < 0)
 930                 ERR("Unable to execute system command");
 931         free(mac_addr);
 932
 933 }