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 #include <net/if.h>
  28 #include <sys/ioctl.h>
  29
  30 #include "log.h"
  31 #include "util.h"
  32 #include "netdbus.h"
  33 #include "neterror.h"
  34 #include "wifi-wps.h"
  35 #include "wifi-bssid-scan.h"
  36 #include "wifi-power.h"
  37 #include "wifi-state.h"
  38 #include "netsupplicant.h"
  39 #include "network-state.h"
  40 #include "network-dpm.h"
  41 #include "wifi-firmware.h"
  42 #include "wifi-background-scan.h"
  43
  44
  45 #define WLAN_SUPPLICANT_SCRIPT          "/usr/bin/wpa_supp.sh"
  46 #define P2P_SUPPLICANT_SCRIPT           "/usr/bin/p2p_supp.sh"
  47
  48 #define VCONF_WIFI_OFF_STATE_BY_AIRPLANE        "file/private/wifi/wifi_off_by_airplane"
  49 #define VCONF_WIFI_OFF_STATE_BY_RESTRICTED      "file/private/wifi/wifi_off_by_restricted"
  50 #define VCONF_WIFI_OFF_STATE_BY_EMERGENCY       "file/private/wifi/wifi_off_by_emergency"
  51 #if !defined TIZEN_WEARABLE
  52 #define VCONFKEY_SETAPPL_NETWORK_PERMIT_WITH_LCD_OFF_LIMIT      "db/setting/network_with_lcd_off_limit"
  53 #endif
  54
  55 #define WLAN_MAC_ADDRESS_FILEPATH   "/sys/class/net/wlan0/address"
  56 #define WLAN_MAC_ADDR_MAX           20
  57 #define VCONF_WIFI_BSSID_ADDRESS        "db/wifi/bssid_address"
  58
  59 #define ETH_MAC_ADDR_SIZE 6
  60 #define VCONF_ETH_MAC_ADDRESS  "db/dnet/mac_address"
  61 #define NET_EXEC_PATH "/sbin/ifconfig"
  62 #define OS_RANDOM_FILE "/dev/urandom"
  63
  64 #define NETCONFIG_TECH_WAITING_INTERVAL 500
  65 #define NETCONFIG_TECH_WAITING_COUNT 6
  66 #define MAX_DRV_CMD_SIZE 248
  67 #define WLAN_IOCTL_SUSPEND (SIOCDEVPRIVATE + 1)
  68
  69 static gboolean connman_wifi_technology_state = FALSE;
  70 static gboolean wifi_firmware_recovery_mode = FALSE;
  71 static int airplane_mode = 0;
  72
  73 typedef struct {
  74         char *buf;
  75         int used_len;
  76         int total_len;
  77 } netconfig_wifi_priv_cmd;
  78
  79 static gboolean __is_wifi_restricted(void)
  80 {
  81 #if defined TIZEN_WEARABLE
  82         return FALSE;
  83 #endif
  84         int restricted_mode = 0;
  85
  86         netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE, &restricted_mode);
  87         if (restricted_mode != 0) {
  88                 DBG("network restricted mode[%d]", restricted_mode);
  89                 return TRUE;
  90         }
  91
  92         return FALSE;
  93 }
  94
  95 static void __technology_reply(GObject *source_object, GAsyncResult *res, gpointer user_data)
  96 {
  97         GVariant *reply;
  98         GDBusConnection *conn = NULL;
  99         GError *error = NULL;
 100
 101         conn = G_DBUS_CONNECTION(source_object);
 102         reply = g_dbus_connection_call_finish(conn, res, &error);
 103
 104         if (reply == NULL) {
 105                 if (error != NULL) {
 106                         if (g_strstr_len(error->message, strlen(error->message),
 107                                         CONNMAN_ERROR_INTERFACE ".AlreadyEnabled") != NULL) {
 108                                 wifi_state_update_power_state(TRUE);
 109                         } else if (g_strstr_len(error->message, strlen(error->message),
 110                                         CONNMAN_ERROR_INTERFACE ".AlreadyDisabled") != NULL) {
 111                                 wifi_state_update_power_state(FALSE);
 112                         } else {
 113                                 ERR("Fail to request status [%d: %s]", error->code, error->message);
 114                                 wifi_state_update_power_state(FALSE);
 115                         }
 116                         g_error_free(error);
 117                 } else {
 118                         ERR("Fail to request status");
 119                         wifi_state_update_power_state(FALSE);
 120                 }
 121         } else {
 122                 DBG("Successfully requested");
 123                 g_variant_unref(reply);
 124         }
 125
 126         netconfig_gdbus_pending_call_unref();
 127 }
 128
 129 static int __execute_supplicant(gboolean enable)
 130 {
 131         int rv = 0;
 132         const char *path = WLAN_SUPPLICANT_SCRIPT;
 133         char *const args_enable[] = { "/usr/bin/wpa_supp.sh", "start", NULL };
 134         char *const args_disable[] = { "/usr/bin/wpa_supp.sh", "stop", NULL };
 135         char *const envs[] = { NULL };
 136         static gboolean enabled = FALSE;
 137
 138         if (enabled == enable)
 139                 return -EALREADY;
 140
 141         if (enable == TRUE)
 142                 rv = netconfig_execute_file(path, args_enable, envs);
 143         else
 144                 rv = netconfig_execute_file(path, args_disable, envs);
 145         if (rv < 0)
 146                 return -EIO;
 147
 148         DBG("wpa_supplicant %s", enable == TRUE ? "started" : "stopped");
 149
 150         enabled = enable;
 151
 152         return 0;
 153 }
 154
 155 void netconfig_wifi_recover_firmware(void)
 156 {
 157         wifi_firmware_recovery_mode = TRUE;
 158
 159         netconfig_wifi_bgscan_stop();
 160
 161         wifi_power_off();
 162 }
 163
 164 static int _load_driver_and_supplicant(void)
 165 {
 166         int err = 0;
 167         wifi_tech_state_e tech_state;
 168
 169         tech_state = wifi_state_get_technology_state();
 170         if (tech_state > NETCONFIG_WIFI_TECH_OFF)
 171                 return -EALREADY;
 172
 173         err = __execute_supplicant(TRUE);
 174         if (err < 0 && err != -EALREADY)
 175                 return err;
 176
 177         err = netconfig_wifi_firmware(NETCONFIG_WIFI_STA, TRUE);
 178         if (err < 0 && err != -EALREADY) {
 179                 __execute_supplicant(FALSE);
 180                 return err;
 181         }
 182
 183         wifi_state_set_tech_state(NETCONFIG_WIFI_TECH_WPS_ONLY);
 184
 185         return 0;
 186 }
 187
 188 static int _remove_driver_and_supplicant(void)
 189 {
 190         int err = 0;
 191
 192         DBG("remove driver and supplicant");
 193         if (wifi_firmware_recovery_mode != TRUE &&
 194                                         netconfig_wifi_is_bssid_scan_started() == TRUE) {
 195                 DBG("Wi-Fi WPS mode");
 196                 return 0;
 197         }
 198
 199         err = netconfig_wifi_firmware(NETCONFIG_WIFI_STA, FALSE);
 200         if (err < 0 && err != -EALREADY)
 201                 return err;
 202
 203         err = __execute_supplicant(FALSE);
 204         if (err < 0 && err != -EALREADY)
 205                 return err;
 206
 207         wifi_state_set_tech_state(NETCONFIG_WIFI_TECH_OFF);
 208
 209         // reset service state
 210         wifi_state_set_service_state(NETCONFIG_WIFI_IDLE);
 211
 212         if (wifi_firmware_recovery_mode == TRUE) {
 213                 if (wifi_power_on() < 0)
 214                         ERR("Failed to recover Wi-Fi firmware");
 215
 216                 wifi_firmware_recovery_mode = FALSE;
 217         }
 218
 219         return 0;
 220 }
 221
 222 static gboolean __check_and_set_technology_enable(gpointer data)
 223 {
 224         static int retry_count = NETCONFIG_TECH_WAITING_COUNT;
 225         gboolean value_enable = TRUE;
 226         gboolean reply = FALSE;
 227         GVariant *params = NULL;
 228         char key[] = "Powered";
 229
 230         if (wifi_state_is_technology_available() == FALSE) {
 231                 retry_count--;
 232                 if (retry_count > 0)
 233                         return TRUE;
 234         }
 235
 236         params = g_variant_new("(sv)", key, g_variant_new_boolean(value_enable));
 237
 238         reply = netconfig_invoke_dbus_method_nonblock(CONNMAN_SERVICE,
 239                                         CONNMAN_WIFI_TECHNOLOGY_PREFIX,
 240                                         CONNMAN_TECHNOLOGY_INTERFACE,
 241                                         "SetProperty", params, __technology_reply);
 242
 243         if (reply != TRUE) {
 244                 ERR("Fail to set technology enable");
 245                 wifi_state_update_power_state(FALSE);
 246
 247                 retry_count = NETCONFIG_TECH_WAITING_COUNT;
 248                 return FALSE;
 249         }
 250
 251         retry_count = NETCONFIG_TECH_WAITING_COUNT;
 252         return FALSE;
 253 }
 254
 255 static int _set_connman_technology_power(gboolean enable)
 256 {
 257         gboolean reply = FALSE;
 258         GVariant *params = NULL;
 259         char key[] = "Powered";
 260         gboolean value_enable = TRUE;
 261         gboolean value_disable = FALSE;
 262
 263         if (connman_wifi_technology_state == enable)
 264                 return -EALREADY;
 265
 266         if (enable && wifi_state_is_technology_available() == FALSE) {
 267                 netconfig_start_timer(NETCONFIG_TECH_WAITING_INTERVAL,
 268                                 __check_and_set_technology_enable, NULL, NULL);
 269                 connman_wifi_technology_state = enable;
 270                 return 0;
 271         }
 272
 273         params = g_variant_new("(sv)", key, (enable == TRUE) ?
 274                 g_variant_new_boolean(value_enable) : g_variant_new_boolean(value_disable));
 275
 276         reply = netconfig_invoke_dbus_method_nonblock(CONNMAN_SERVICE,
 277                                         CONNMAN_WIFI_TECHNOLOGY_PREFIX, CONNMAN_TECHNOLOGY_INTERFACE,
 278                                         "SetProperty", params, __technology_reply);
 279
 280         if (reply != TRUE) {
 281                 ERR("Fail to set technology %s", enable == TRUE ? "enable" : "disable");
 282                 return -ESRCH;
 283         }
 284
 285         /* If Wi-Fi powered off,
 286          * Do not remove Wi-Fi driver until ConnMan technology state updated
 287          */
 288         if (enable == TRUE)
 289                 connman_wifi_technology_state = enable;
 290
 291         /* To be keep safe, early disable Wi-Fi tech state */
 292         if (enable != TRUE)
 293                 wifi_state_set_tech_state(NETCONFIG_WIFI_TECH_WPS_ONLY);
 294
 295         return 0;
 296 }
 297
 298 static void __netconfig_set_wifi_bssid(void)
 299 {
 300         int rv = 0;
 301         char bssid[WLAN_MAC_ADDR_MAX];
 302
 303         FILE *fp = fopen(WLAN_MAC_ADDRESS_FILEPATH, "r");
 304
 305         if (fp == NULL) {
 306                 ERR("Fail to open %s", WLAN_MAC_ADDRESS_FILEPATH);
 307                 return;
 308         }
 309
 310         rv = fseek(fp, 0L, SEEK_SET);
 311         if (rv != 0) {
 312                 ERR("Fail to seek file");
 313                 fclose(fp);
 314                 return;
 315         }
 316
 317         rv = fscanf(fp, "%17s", bssid);
 318         if (rv < 0) {
 319                 ERR("Fail to read bssid");
 320                 fclose(fp);
 321                 return;
 322         }
 323
 324         netconfig_set_vconf_str(VCONF_WIFI_BSSID_ADDRESS, bssid);
 325
 326         fclose(fp);
 327 }
 328
 329 void netconfig_wifi_disable_technology_state_by_only_connman_signal(void)
 330 {
 331         /* Important: it's only done by ConnMan technology signal update */
 332         connman_wifi_technology_state = FALSE;
 333 }
 334
 335 #if defined TIZEN_WEARABLE
 336 int netconfig_wifi_on_wearable(gboolean device_picker_test)
 337 {
 338         int err = 0;
 339         int ps_mode;
 340
 341         if (netconfig_vconf_get_int(VCONFKEY_SETAPPL_PSMODE, &ps_mode) < 0) {
 342                 ERR("Fail to get VCONFKEY_SETAPPL_PSMODE");
 343                 return -EIO;
 344         }
 345
 346         if (ps_mode > SETTING_PSMODE_NORMAL) {
 347                 WARN("ps mode is on(%d), Not turn on Wi-Fi", ps_mode);
 348                 return -EPERM;
 349         }
 350
 351         err = wifi_power_driver_and_supplicant(TRUE);
 352         if (err < 0 && err != -EALREADY)
 353                 return err;
 354
 355         err = _set_connman_technology_power(TRUE);
 356
 357         if (device_picker_test == TRUE)
 358                 netconfig_wifi_enable_device_picker_test();
 359
 360         return err;
 361 }
 362 #else
 363 static void __netconfig_wifi_restrict_mode(keynode_t *node, void *user_data)
 364 {
 365         int wifi_state = 0, restricted = 0;
 366         int wifi_off_by_restricted = 0;
 367
 368         netconfig_vconf_get_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, &wifi_off_by_restricted);
 369
 370         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 371
 372         if (node != NULL)
 373                 restricted = vconf_keynode_get_bool(node);
 374         else
 375                 netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE, &restricted);
 376
 377         DBG("network restricted mode %s", restricted > 0 ? "ON" : "OFF");
 378         DBG("Wi-Fi state %d, Wi-Fi was off by restricted mode %s", wifi_state,
 379                         wifi_off_by_restricted ? "Yes" : "No");
 380
 381         if (restricted > 0) {
 382                 /* network restricted on */
 383                 if (wifi_state == VCONFKEY_WIFI_OFF)
 384                         return;
 385
 386                 wifi_power_off();
 387
 388                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, 1);
 389         } else {
 390                 /* network restricted off */
 391                 if (!wifi_off_by_restricted)
 392                         return;
 393
 394                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, 0);
 395
 396                 if (wifi_state > VCONFKEY_WIFI_OFF)
 397                         return;
 398
 399                 wifi_power_on();
 400         }
 401 }
 402 #endif
 403
 404 static void __netconfig_wifi_airplane_mode(keynode_t *node, void *user_data)
 405 {
 406         int wifi_state = 0, airplane_state = 0;
 407         int wifi_off_by_airplane = 0;
 408
 409         netconfig_vconf_get_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, &wifi_off_by_airplane);
 410         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 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         } else {
 435                 /* airplane mode off */
 436                 if (!wifi_off_by_airplane)
 437                         return;
 438
 439                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0);
 440                 if (wifi_state > VCONFKEY_WIFI_OFF)
 441                         return;
 442
 443                 wifi_power_on();
 444         }
 445 }
 446
 447 static void __emergency_mode_changed_cb(keynode_t *node, void *user_data)
 448 {
 449         int wifi_state = 0, emergency = 0;
 450         int wifi_off_by_emergency = 0;
 451 #if !defined TIZEN_WEARABLE
 452         int emergency_by_fmm = 0;
 453 #endif
 454         netconfig_vconf_get_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, &wifi_off_by_emergency);
 455         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 456
 457 #if !defined TIZEN_WEARABLE
 458         netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_PERMIT_WITH_LCD_OFF_LIMIT, &emergency_by_fmm);
 459         DBG("emergency mode by Find My Mobile (%d)", emergency_by_fmm);
 460         if (emergency_by_fmm == 1)
 461                 return;
 462 #endif
 463
 464         if (node != NULL)
 465                 emergency = vconf_keynode_get_int(node);
 466         else
 467                 netconfig_vconf_get_int(VCONFKEY_SETAPPL_PSMODE, &emergency);
 468
 469         DBG("emergency mode %s", emergency > SETTING_PSMODE_POWERFUL ? "ON" : "OFF");
 470         DBG("Wi-Fi state %d, Wi-Fi was off by emergency mode %s", wifi_state, wifi_off_by_emergency ? "Yes" : "No");
 471
 472 #if defined TIZEN_WEARABLE
 473         if (emergency == SETTING_PSMODE_WEARABLE) {
 474                 /* basic power saving mode on */
 475         } else if (emergency == SETTING_PSMODE_WEARABLE_ENHANCED) {
 476                 /* enhanced power saving mode on */
 477                 if (wifi_state == VCONFKEY_WIFI_OFF)
 478                         return;
 479
 480                 wifi_power_off();
 481                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 1);
 482         } else {
 483                 /* power saving mode off */
 484                 if (!wifi_off_by_emergency)
 485                         return;
 486
 487                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 0);
 488                 if (wifi_state > VCONFKEY_WIFI_OFF)
 489                         return;
 490
 491                 wifi_power_on_wearable(TRUE);
 492         }
 493 #else
 494         if (emergency > SETTING_PSMODE_POWERFUL) {
 495                 /* emergency mode on */
 496                 if (wifi_state == VCONFKEY_WIFI_OFF)
 497                         return;
 498
 499                 wifi_power_off();
 500
 501                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 1);
 502         } else {
 503                 /* emergency mode off */
 504                 if (!wifi_off_by_emergency)
 505                         return;
 506
 507                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 0);
 508
 509                 if (wifi_state > VCONFKEY_WIFI_OFF)
 510                         return;
 511
 512                 wifi_power_on();
 513         }
 514 #endif
 515
 516 }
 517
 518 void wifi_set_early_suspend(gboolean value)
 519 {
 520         static gboolean old_state = FALSE;
 521         struct ifreq ifr;
 522         char buf[MAX_DRV_CMD_SIZE];
 523         netconfig_wifi_priv_cmd priv_cmd;
 524         int ret = 0;
 525         int ioctl_sock = 0;
 526         int pm_state = 0;
 527         wifi_service_state_e wifi_state;
 528         char error_buf[MAX_SIZE_ERROR_BUFFER] = {0, };
 529
 530         if (old_state == value) {
 531                 DBG("Old and new states are same");
 532                 return;
 533         }
 534
 535         if (netconfig_vconf_get_int(VCONFKEY_PM_STATE, &pm_state) < 0)
 536                 ERR("Fail to get VCONFKEY_PM_STATE");
 537
 538         wifi_state = wifi_state_get_service_state();
 539
 540         if (value == TRUE &&
 541                         (pm_state < VCONFKEY_PM_STATE_LCDOFF ||
 542                          wifi_state == NETCONFIG_WIFI_ASSOCIATION ||
 543                          wifi_state == NETCONFIG_WIFI_CONFIGURATION)){
 544                 DBG("");
 545                 return;
 546         }
 547
 548         memset(buf, 0, sizeof(buf));
 549         snprintf(buf, sizeof(buf), "SETSUSPENDMODE %d", value);
 550
 551         memset(&ifr, 0, sizeof(struct ifreq));
 552         g_strlcpy((char *)ifr.ifr_name, WIFI_IFNAME, IFNAMSIZ);
 553
 554         DBG("Early suspend command: [%s]", buf);
 555
 556         memset(&priv_cmd, 0, sizeof(priv_cmd));
 557         priv_cmd.buf = buf;
 558         priv_cmd.used_len = sizeof(buf);
 559         priv_cmd.total_len = sizeof(buf);
 560         ifr.ifr_data = (char *)&priv_cmd;
 561
 562         ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
 563         if (ioctl_sock < 0) {
 564                 DBG("socket(PF_INET,SOCK_DGRAM) failed: %s",
 565                                 strerror_r(errno, error_buf, MAX_SIZE_ERROR_BUFFER));
 566                 return;
 567         }
 568
 569         ret = ioctl(ioctl_sock, WLAN_IOCTL_SUSPEND, &ifr);
 570         if (ret < 0) {
 571                 ERR("Fail to issue private commands: %d. %s", ret,
 572                                 strerror_r(errno, error_buf, MAX_SIZE_ERROR_BUFFER));
 573         } else {
 574                 old_state = value;
 575         }
 576
 577         close(ioctl_sock);
 578 }
 579
 580 static void __pm_state_changed_cb(keynode_t* node, void* user_data)
 581 {
 582         int new_state = -1;
 583         int wifi_state = 0;
 584         static int prev_state = VCONFKEY_PM_STATE_NORMAL;
 585
 586         if (netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state) < 0) {
 587                 ERR("Fail to get VCONFKEY_WIFI_STATE");
 588                 return;
 589         }
 590
 591         /* PM state
 592          *      VCONFKEY_PM_STATE_NORMAL = 1,
 593          *      VCONFKEY_PM_STATE_LCDDIM,
 594          *      VCONFKEY_PM_STATE_LCDOFF,
 595          *      VCONFKEY_PM_STATE_SLEEP
 596          */
 597         if (node != NULL)
 598                 new_state = vconf_keynode_get_int(node);
 599         else
 600                 netconfig_vconf_get_int(VCONFKEY_PM_STATE, &new_state);
 601
 602         DBG("wifi state: %d (0 off / 1 on / 2 connected)", wifi_state);
 603         DBG("Old PM state: %d, current: %d (1 normal / 2 lcddim / 3 lcdoff / 4 sleep)", prev_state, new_state);
 604
 605         if ((new_state == VCONFKEY_PM_STATE_NORMAL) && (prev_state >= VCONFKEY_PM_STATE_LCDOFF)) {
 606                 /* Send early suspend mode based on LCD state and disallow early suspend count */
 607                 if (wifi_state != VCONFKEY_WIFI_OFF) {
 608                         wifi_set_early_suspend(FALSE);
 609                         DBG("Unset early suspend");
 610                 }
 611
 612                 netconfig_wifi_bgscan_stop();
 613                 netconfig_wifi_bgscan_set_interval(SCAN_EXPONENTIAL_MIN);
 614                 netconfig_wifi_bgscan_start(TRUE);
 615         } else if ((new_state == VCONFKEY_PM_STATE_LCDOFF) && (prev_state < VCONFKEY_PM_STATE_LCDOFF) && (wifi_state != VCONFKEY_WIFI_OFF)) {
 616                 wifi_set_early_suspend(TRUE);
 617                 DBG("Set early suspend");
 618         }
 619
 620         prev_state = new_state;
 621 }
 622
 623 static void __netconfig_telephony_ready_changed_cb(keynode_t * node, void *data)
 624 {
 625         int telephony_ready = 0;
 626
 627         if (node != NULL)
 628                 telephony_ready = vconf_keynode_get_bool(node);
 629         else
 630                 netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_READY, &telephony_ready);
 631
 632         if (telephony_ready != 0) {
 633                 if (netconfig_tapi_check_sim_state() == FALSE) {
 634                         DBG("Sim is not initialized yet.");
 635
 636                         goto done;
 637                 }
 638         } else
 639                 return;
 640
 641         DBG("Turn Wi-Fi on automatically");
 642
 643 #if defined TIZEN_WEARABLE
 644         wifi_power_on_wearable(TRUE);
 645 #else
 646         wifi_power_on();
 647 #endif
 648
 649 done:
 650         vconf_ignore_key_changed(VCONFKEY_TELEPHONY_READY, __netconfig_telephony_ready_changed_cb);
 651 }
 652
 653 int wifi_power_driver_and_supplicant(gboolean enable)
 654 {
 655         /* There are 3 thumb rules for Wi-Fi power management
 656          *   1. Do not make exposed API to control wpa_supplicant and driver directly.
 657          *      It probably breaks ConnMan technology operation.
 658          *
 659          *   2. Do not remove driver and wpa_supplicant if ConnMan already enabled.
 660          *      It breaks ConnMan technology operation.
 661          *
 662          *   3. Final the best rule: make it as simple as possible.
 663          *      Simple code enables easy maintenance and reduces logical errors.
 664          */
 665         if (enable == TRUE) {
 666                 return _load_driver_and_supplicant();
 667         } else {
 668                 if (connman_wifi_technology_state == TRUE)
 669                         return -ENOSYS;
 670
 671                 return _remove_driver_and_supplicant();
 672         }
 673 }
 674
 675 void wifi_power_disable_technology_state_by_only_connman_signal(void)
 676 {
 677         /* Important: it's only done by ConnMan technology signal update */
 678         connman_wifi_technology_state = FALSE;
 679 }
 680
 681 void wifi_power_recover_firmware(void)
 682 {
 683         wifi_firmware_recovery_mode = TRUE;
 684
 685         netconfig_wifi_bgscan_stop();
 686
 687         wifi_power_off();
 688 }
 689
 690 int wifi_power_on(void)
 691 {
 692         int err = 0;
 693         wifi_tech_state_e tech_state;
 694
 695         tech_state = wifi_state_get_technology_state();
 696         if (tech_state >= NETCONFIG_WIFI_TECH_POWERED) {
 697                 /* There can be a scenario where wifi is automatically *
 698                  * activated by connman if wifi was powered in last boot. *
 699                  * So we should update connman_wifi_technology_state variable *
 700                  * if it is found that wifi_tech_state variable is *
 701                  * NETCONFIG_WIFI_TECH_POWERED and connman_wifi_technology_state *
 702                  * variable is FALSE. Earlier connman_wifi_technology_state *
 703                  * variable was only updated when wifi was Powered on from *
 704                  * net-config resulting in variable not getting updated. *
 705                  * This caused wifi to not get deactivated after reboot if *
 706                  * last power state was activated */
 707                 ERR("Net-Config WiFi connman technology state %d",
 708                                 connman_wifi_technology_state);
 709                 if (connman_wifi_technology_state == FALSE)
 710                         connman_wifi_technology_state = TRUE;
 711                 return -EALREADY;
 712         }
 713
 714         if (__is_wifi_restricted() == TRUE)
 715                 return -EPERM;
 716
 717         if (netconfig_is_wifi_tethering_on() == TRUE) {
 718                 /* TODO: Wi-Fi tethering turns off here */
 719                 /* return TRUE; */
 720                 ERR("Failed to turn tethering off");
 721                 return -EBUSY;
 722         }
 723
 724         err = wifi_power_driver_and_supplicant(TRUE);
 725         if (err < 0 && err != -EALREADY)
 726                 return err;
 727
 728         err = _set_connman_technology_power(TRUE);
 729
 730         return err;
 731 }
 732
 733 int wifi_power_off(void)
 734 {
 735         int err;
 736
 737         err = _set_connman_technology_power(FALSE);
 738         if (err == -EALREADY)
 739                 wifi_state_update_power_state(FALSE);
 740
 741         return 0;
 742 }
 743
 744 #if defined TIZEN_WEARABLE
 745 int wifi_power_on_wearable(gboolean device_picker_test)
 746 {
 747         int err = 0;
 748         wifi_tech_state_e tech_state;
 749
 750         tech_state = wifi_state_get_technology_state();
 751         if (tech_state >= NETCONFIG_WIFI_TECH_POWERED)
 752                 return -EALREADY;
 753
 754         err = wifi_power_driver_and_supplicant(TRUE);
 755         if (err < 0 && err != -EALREADY)
 756                 return err;
 757
 758         err = _set_connman_technology_power(TRUE);
 759
 760         if (device_picker_test == TRUE)
 761                 netconfig_wifi_enable_device_picker_test();
 762
 763         return err;
 764 }
 765 #endif
 766
 767 void wifi_power_initialize(void)
 768 {
 769         int wifi_last_power_state = 0;
 770
 771         /* Initialize Airplane mode */
 772         netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_FLIGHT_MODE, &airplane_mode);
 773         DBG("Airplane[%s]", airplane_mode > 0 ? "ON" : "OFF");
 774
 775         /* Update the last Wi-Fi power state */
 776         netconfig_vconf_get_int(VCONF_WIFI_LAST_POWER_STATE, &wifi_last_power_state);
 777         if (wifi_last_power_state > VCONFKEY_WIFI_OFF) {
 778                 if (TIZEN_TELEPHONY_ENABLE) {
 779                         int telephony_ready = 0;
 780                         netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_READY, &telephony_ready);
 781                         if (telephony_ready == 0) {
 782                                 DBG("Telephony API is not initialized yet");
 783                                 vconf_notify_key_changed(VCONFKEY_TELEPHONY_READY,
 784                                                 __netconfig_telephony_ready_changed_cb, NULL);
 785                         } else {
 786                                 if (netconfig_tapi_check_sim_state() == FALSE)
 787                                         DBG("SIM is not initialized yet");
 788                         }
 789                 }
 790                 DBG("Turn Wi-Fi on automatically");
 791 #if defined TIZEN_WEARABLE
 792                 wifi_power_on_wearable(TRUE);
 793 #else
 794                 wifi_power_on();
 795 #endif
 796         }
 797
 798 #if defined TIZEN_WEARABLE
 799         vconf_notify_key_changed(VCONFKEY_TELEPHONY_FLIGHT_MODE,
 800                         __netconfig_wifi_airplane_mode, NULL);
 801 #else
 802         vconf_notify_key_changed(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE,
 803                         __netconfig_wifi_restrict_mode, NULL);
 804         vconf_notify_key_changed(VCONFKEY_TELEPHONY_FLIGHT_MODE,
 805                         __netconfig_wifi_airplane_mode, NULL);
 806 #endif
 807
 808         vconf_notify_key_changed(VCONFKEY_SETAPPL_PSMODE, __emergency_mode_changed_cb, NULL);
 809         vconf_notify_key_changed(VCONFKEY_PM_STATE, __pm_state_changed_cb, NULL);
 810 }
 811
 812 void wifi_power_deinitialize(void)
 813 {
 814 }
 815
 816 gboolean handle_load_driver(Wifi *wifi,
 817                 GDBusMethodInvocation *context, gboolean device_picker_test)
 818 {
 819         int err;
 820
 821         DBG("Wi-Fi power on requested");
 822
 823         g_return_val_if_fail(wifi != NULL, TRUE);
 824
 825         if (!netconfig_dpm_update_from_wifi()) {
 826                 DBG("DPM policy restricts Wi-Fi");
 827                 netconfig_error_permission_denied(context);
 828                 return TRUE;
 829         }
 830
 831         if (TIZEN_WLAN_BOARD_SPRD)
 832                 wifi_firmware_download();
 833
 834 #if defined TIZEN_WEARABLE
 835         err = wifi_power_on_wearable(device_picker_test);
 836 #else
 837         err = wifi_power_on();
 838
 839         if (device_picker_test == TRUE)
 840                 netconfig_wifi_enable_device_picker_test();
 841 #endif
 842         if (err < 0) {
 843                 if (err == -EALREADY)
 844                         netconfig_error_already_exists(context);
 845                 else if (err == -EPERM)
 846                         netconfig_error_permission_denied(context);
 847                 else
 848                         netconfig_error_wifi_driver_failed(context);
 849
 850                 return TRUE;
 851         }
 852
 853
 854         netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0);
 855         __netconfig_set_wifi_bssid();
 856
 857         wifi_complete_load_driver(wifi, context);
 858         return TRUE;
 859 }
 860
 861 gboolean handle_remove_driver(Wifi *wifi, GDBusMethodInvocation *context)
 862 {
 863         int err;
 864
 865         DBG("Wi-Fi power off requested");
 866
 867         g_return_val_if_fail(wifi != NULL, TRUE);
 868
 869         err = wifi_power_off();
 870         if (err < 0) {
 871                 if (err == -EINPROGRESS)
 872                         netconfig_error_inprogress(context);
 873                 else if (err == -EALREADY)
 874                         netconfig_error_already_exists(context);
 875                 else if (err == -EPERM)
 876                         netconfig_error_permission_denied(context);
 877                 else
 878                         netconfig_error_wifi_driver_failed(context);
 879                 return TRUE;
 880         }
 881
 882         netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0);
 883
 884         wifi_complete_remove_driver(wifi, context);
 885         return TRUE;
 886 }
 887
 888 gboolean handle_load_p2p_driver(Wifi *wifi, GDBusMethodInvocation *context)
 889 {
 890         ERR("Deprecated");
 891
 892         wifi_complete_load_p2p_driver(wifi, context);
 893         return TRUE;
 894 }
 895
 896 gboolean handle_remove_p2p_driver(Wifi *wifi, GDBusMethodInvocation *context)
 897 {
 898         ERR("Deprecated");
 899
 900         wifi_complete_remove_p2p_driver(wifi, context);
 901         return TRUE;
 902 }
 903
 904 static int __netconfig_get_random_mac(unsigned char *mac_buf, int mac_len)
 905 {
 906         DBG("Generate Random Mac address of ethernet");
 907         FILE *fp;
 908         int rc;
 909
 910         fp = fopen(OS_RANDOM_FILE, "rb");
 911
 912         if (fp == NULL) {
 913                 ERR("Could not open /dev/urandom");
 914                 return -1;
 915         }
 916         rc = fread(mac_buf, 1, mac_len, fp);
 917         if (fp)
 918                 fclose(fp);
 919
 920         return rc != mac_len ? -1 : 0;
 921 }
 922
 923 void __netconfig_set_ether_macaddr()
 924 {
 925         DBG("Set wired Mac address ");
 926         char *mac_addr = NULL;
 927         char rand_addr[WLAN_MAC_ADDR_MAX];
 928         int rv = -1;
 929
 930         mac_addr = vconf_get_str(VCONF_ETH_MAC_ADDRESS);
 931         if (mac_addr == NULL) {
 932                 DBG("vconf_get_str Failed\n");
 933                 return;
 934         }
 935         /* Checking Invalid MAC Address */
 936         if ((strlen(mac_addr) == 0)) {
 937                 ERR("Failed to get valid MAC Address from vconf");
 938                 /*Generate the Random Mac address*/
 939                 unsigned char rand_mac_add[ETH_MAC_ADDR_SIZE+1];
 940
 941                 if (__netconfig_get_random_mac(rand_mac_add, ETH_MAC_ADDR_SIZE) == -1) {
 942
 943                         ERR("Could not generate the Random Mac address");
 944                         free(mac_addr);
 945                         return;
 946                 }
 947
 948                 rand_mac_add[0] &= 0xFE; /*Clear multicase bit*/
 949                 rand_mac_add[0] |= 0x02; /*set local assignment bit*/
 950
 951                 /*Set the Mac address in Vconf*/
 952                 snprintf(rand_addr, WLAN_MAC_ADDR_MAX, "%x:%x:%x:%x:%x:%x",
 953                                 rand_mac_add[0], rand_mac_add[1],
 954                                 rand_mac_add[2], rand_mac_add[3],
 955                                 rand_mac_add[4], rand_mac_add[5]);
 956
 957                 netconfig_set_vconf_str(VCONF_ETH_MAC_ADDRESS, rand_addr);
 958         } else { /* Valid MAC address */
 959                 g_strlcpy(rand_addr, mac_addr, WLAN_MAC_ADDR_MAX);
 960         }
 961
 962         DBG("MAC Address of eth0 [%s]", rand_addr);
 963         const char *path = NET_EXEC_PATH;
 964         char *const args[] = { "/sbin/ifconfig", "eth0", "hw",
 965                 "ether", rand_addr, "up", NULL};
 966         char *const envs[] = { NULL };
 967         rv = netconfig_execute_file(path, args, envs);
 968
 969         if (rv < 0)
 970                 ERR("Unable to execute system command");
 971         free(mac_addr);
 972
 973 }