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         fseek(fp, 0L, SEEK_SET);
 311         rv = fscanf(fp, "%17s", bssid);
 312
 313         if (rv < 0)
 314                 ERR("Fail to read bssid");
 315
 316         netconfig_set_vconf_str(VCONF_WIFI_BSSID_ADDRESS, bssid);
 317
 318         fclose(fp);
 319 }
 320
 321 void netconfig_wifi_disable_technology_state_by_only_connman_signal(void)
 322 {
 323         /* Important: it's only done by ConnMan technology signal update */
 324         connman_wifi_technology_state = FALSE;
 325 }
 326
 327 #if defined TIZEN_WEARABLE
 328 int netconfig_wifi_on_wearable(gboolean device_picker_test)
 329 {
 330         int err = 0;
 331         int ps_mode;
 332
 333         if (netconfig_vconf_get_int(VCONFKEY_SETAPPL_PSMODE, &ps_mode) < 0) {
 334                 ERR("Fail to get VCONFKEY_SETAPPL_PSMODE");
 335                 return -EIO;
 336         }
 337
 338         if (ps_mode > SETTING_PSMODE_NORMAL) {
 339                 WARN("ps mode is on(%d), Not turn on Wi-Fi", ps_mode);
 340                 return -EPERM;
 341         }
 342
 343         err = wifi_power_driver_and_supplicant(TRUE);
 344         if (err < 0 && err != -EALREADY)
 345                 return err;
 346
 347         err = _set_connman_technology_power(TRUE);
 348
 349         if (device_picker_test == TRUE)
 350                 netconfig_wifi_enable_device_picker_test();
 351
 352         return err;
 353 }
 354 #else
 355 static void __netconfig_wifi_restrict_mode(keynode_t *node, void *user_data)
 356 {
 357         int wifi_state = 0, restricted = 0;
 358         int wifi_off_by_restricted = 0;
 359
 360         netconfig_vconf_get_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, &wifi_off_by_restricted);
 361
 362         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 363
 364         if (node != NULL)
 365                 restricted = vconf_keynode_get_bool(node);
 366         else
 367                 netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE, &restricted);
 368
 369         DBG("network restricted mode %s", restricted > 0 ? "ON" : "OFF");
 370         DBG("Wi-Fi state %d, Wi-Fi was off by restricted mode %s", wifi_state,
 371                         wifi_off_by_restricted ? "Yes" : "No");
 372
 373         if (restricted > 0) {
 374                 /* network restricted on */
 375                 if (wifi_state == VCONFKEY_WIFI_OFF)
 376                         return;
 377
 378                 wifi_power_off();
 379
 380                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, 1);
 381         } else {
 382                 /* network restricted off */
 383                 if (!wifi_off_by_restricted)
 384                         return;
 385
 386                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, 0);
 387
 388                 if (wifi_state > VCONFKEY_WIFI_OFF)
 389                         return;
 390
 391                 wifi_power_on();
 392         }
 393 }
 394 #endif
 395
 396 static void __netconfig_wifi_airplane_mode(keynode_t *node, void *user_data)
 397 {
 398         int wifi_state = 0, airplane_state = 0;
 399         int wifi_off_by_airplane = 0;
 400
 401         netconfig_vconf_get_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, &wifi_off_by_airplane);
 402         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 403
 404         if (node != NULL)
 405                 airplane_state = vconf_keynode_get_bool(node);
 406         else
 407                 netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_FLIGHT_MODE, &airplane_state);
 408
 409         DBG("airplane mode %s (prev:%d)", airplane_state > 0 ? "ON" : "OFF", airplane_mode);
 410         DBG("Wi-Fi state(or use) %d, Wi-Fi was off by flight mode %s", wifi_state,
 411                         wifi_off_by_airplane ? "Yes" : "No");
 412
 413         if (airplane_mode == airplane_state)
 414                 return ;
 415
 416         airplane_mode = airplane_state;
 417
 418         if (airplane_state > 0) {
 419                 /* airplane mode on */
 420                 if (wifi_state == VCONFKEY_WIFI_OFF)
 421                         return;
 422
 423                 wifi_power_off();
 424
 425                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 1);
 426         } else {
 427                 /* airplane mode off */
 428                 if (!wifi_off_by_airplane)
 429                         return;
 430
 431                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0);
 432                 if (wifi_state > VCONFKEY_WIFI_OFF)
 433                         return;
 434
 435                 wifi_power_on();
 436         }
 437 }
 438
 439 static void __emergency_mode_changed_cb(keynode_t *node, void *user_data)
 440 {
 441         int wifi_state = 0, emergency = 0;
 442         int wifi_off_by_emergency = 0;
 443 #if !defined TIZEN_WEARABLE
 444         int emergency_by_fmm = 0;
 445 #endif
 446         netconfig_vconf_get_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, &wifi_off_by_emergency);
 447         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 448
 449 #if !defined TIZEN_WEARABLE
 450         netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_PERMIT_WITH_LCD_OFF_LIMIT, &emergency_by_fmm);
 451         DBG("emergency mode by Find My Mobile (%d)", emergency_by_fmm);
 452         if (emergency_by_fmm == 1)
 453                 return;
 454 #endif
 455
 456         if (node != NULL)
 457                 emergency = vconf_keynode_get_int(node);
 458         else
 459                 netconfig_vconf_get_int(VCONFKEY_SETAPPL_PSMODE, &emergency);
 460
 461         DBG("emergency mode %s", emergency > SETTING_PSMODE_POWERFUL ? "ON" : "OFF");
 462         DBG("Wi-Fi state %d, Wi-Fi was off by emergency mode %s", wifi_state, wifi_off_by_emergency ? "Yes" : "No");
 463
 464 #if defined TIZEN_WEARABLE
 465         if (emergency == SETTING_PSMODE_WEARABLE) {
 466                 /* basic power saving mode on */
 467         } else if (emergency == SETTING_PSMODE_WEARABLE_ENHANCED) {
 468                 /* enhanced power saving mode on */
 469                 if (wifi_state == VCONFKEY_WIFI_OFF)
 470                         return;
 471
 472                 wifi_power_off();
 473                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 1);
 474         } else {
 475                 /* power saving mode off */
 476                 if (!wifi_off_by_emergency)
 477                         return;
 478
 479                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 0);
 480                 if (wifi_state > VCONFKEY_WIFI_OFF)
 481                         return;
 482
 483                 wifi_power_on_wearable(TRUE);
 484         }
 485 #else
 486         if (emergency > SETTING_PSMODE_POWERFUL) {
 487                 /* emergency mode on */
 488                 if (wifi_state == VCONFKEY_WIFI_OFF)
 489                         return;
 490
 491                 wifi_power_off();
 492
 493                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 1);
 494         } else {
 495                 /* emergency mode off */
 496                 if (!wifi_off_by_emergency)
 497                         return;
 498
 499                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 0);
 500
 501                 if (wifi_state > VCONFKEY_WIFI_OFF)
 502                         return;
 503
 504                 wifi_power_on();
 505         }
 506 #endif
 507
 508 }
 509
 510 void wifi_set_early_suspend(gboolean value)
 511 {
 512         static gboolean old_state = FALSE;
 513         struct ifreq ifr;
 514         char buf[MAX_DRV_CMD_SIZE];
 515         netconfig_wifi_priv_cmd priv_cmd;
 516         int ret = 0;
 517         int ioctl_sock = 0;
 518         int pm_state = 0;
 519         wifi_service_state_e wifi_state;
 520
 521         if (old_state == value) {
 522                 DBG("Old and new states are same");
 523                 return;
 524         }
 525
 526         if (netconfig_vconf_get_int(VCONFKEY_PM_STATE, &pm_state) < 0)
 527                 ERR("Fail to get VCONFKEY_PM_STATE");
 528
 529         wifi_state = wifi_state_get_service_state();
 530
 531         if (value == TRUE &&
 532                         (pm_state < VCONFKEY_PM_STATE_LCDOFF ||
 533                          wifi_state == NETCONFIG_WIFI_ASSOCIATION ||
 534                          wifi_state == NETCONFIG_WIFI_CONFIGURATION)){
 535                 DBG("");
 536                 return;
 537         }
 538
 539         memset(buf, 0, sizeof(buf));
 540         snprintf(buf, sizeof(buf), "SETSUSPENDMODE %d", value);
 541
 542         memset(&ifr, 0, sizeof(struct ifreq));
 543         g_strlcpy((char *)ifr.ifr_name, WIFI_IFNAME, IFNAMSIZ);
 544
 545         DBG("Early suspend command: [%s]", buf);
 546
 547         memset(&priv_cmd, 0, sizeof(priv_cmd));
 548         priv_cmd.buf = buf;
 549         priv_cmd.used_len = sizeof(buf);
 550         priv_cmd.total_len = sizeof(buf);
 551         ifr.ifr_data = (char *)&priv_cmd;
 552
 553         ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
 554         if (ioctl_sock < 0) {
 555                 DBG("socket(PF_INET,SOCK_DGRAM) failed");
 556                 return;
 557         }
 558
 559         ret = ioctl(ioctl_sock, WLAN_IOCTL_SUSPEND, &ifr);
 560
 561         if (ret < 0)
 562                 ERR("Fail to issue private commands: %d. %s", ret, strerror(errno));
 563         else {
 564                 old_state = value;
 565         }
 566
 567         close(ioctl_sock);
 568 }
 569
 570 static void __pm_state_changed_cb(keynode_t* node, void* user_data)
 571 {
 572         int new_state = -1;
 573         int wifi_state = 0;
 574         static int prev_state = VCONFKEY_PM_STATE_NORMAL;
 575
 576         if (netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state) < 0) {
 577                 ERR("Fail to get VCONFKEY_WIFI_STATE");
 578                 return;
 579         }
 580
 581         /* PM state
 582          *      VCONFKEY_PM_STATE_NORMAL = 1,
 583          *      VCONFKEY_PM_STATE_LCDDIM,
 584          *      VCONFKEY_PM_STATE_LCDOFF,
 585          *      VCONFKEY_PM_STATE_SLEEP
 586          */
 587         if (node != NULL)
 588                 new_state = vconf_keynode_get_int(node);
 589         else
 590                 netconfig_vconf_get_int(VCONFKEY_PM_STATE, &new_state);
 591
 592         DBG("wifi state: %d (0 off / 1 on / 2 connected)", wifi_state);
 593         DBG("Old PM state: %d, current: %d (1 normal / 2 lcddim / 3 lcdoff / 4 sleep)", prev_state, new_state);
 594
 595         if ((new_state == VCONFKEY_PM_STATE_NORMAL) && (prev_state >= VCONFKEY_PM_STATE_LCDOFF)) {
 596                 /* Send early suspend mode based on LCD state and disallow early suspend count */
 597                 if (wifi_state != VCONFKEY_WIFI_OFF) {
 598                         wifi_set_early_suspend(FALSE);
 599                         DBG("Unset early suspend");
 600                 }
 601
 602                 netconfig_wifi_bgscan_stop();
 603                 netconfig_wifi_bgscan_set_interval(SCAN_EXPONENTIAL_MIN);
 604                 netconfig_wifi_bgscan_start(TRUE);
 605         } else if ((new_state == VCONFKEY_PM_STATE_LCDOFF) && (prev_state < VCONFKEY_PM_STATE_LCDOFF) && (wifi_state != VCONFKEY_WIFI_OFF)) {
 606                 wifi_set_early_suspend(TRUE);
 607                 DBG("Set early suspend");
 608         }
 609
 610         prev_state = new_state;
 611 }
 612
 613 static void __netconfig_telephony_ready_changed_cb(keynode_t * node, void *data)
 614 {
 615         int telephony_ready = 0;
 616
 617         if (node != NULL)
 618                 telephony_ready = vconf_keynode_get_bool(node);
 619         else
 620                 netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_READY, &telephony_ready);
 621
 622         if (telephony_ready != 0) {
 623                 if (netconfig_tapi_check_sim_state() == FALSE) {
 624                         DBG("Sim is not initialized yet.");
 625
 626                         goto done;
 627                 }
 628         } else
 629                 return;
 630
 631         DBG("Turn Wi-Fi on automatically");
 632
 633 #if defined TIZEN_WEARABLE
 634         wifi_power_on_wearable(TRUE);
 635 #else
 636         wifi_power_on();
 637 #endif
 638
 639 done:
 640         vconf_ignore_key_changed(VCONFKEY_TELEPHONY_READY, __netconfig_telephony_ready_changed_cb);
 641 }
 642
 643 int wifi_power_driver_and_supplicant(gboolean enable)
 644 {
 645         /* There are 3 thumb rules for Wi-Fi power management
 646          *   1. Do not make exposed API to control wpa_supplicant and driver directly.
 647          *      It probably breaks ConnMan technology operation.
 648          *
 649          *   2. Do not remove driver and wpa_supplicant if ConnMan already enabled.
 650          *      It breaks ConnMan technology operation.
 651          *
 652          *   3. Final the best rule: make it as simple as possible.
 653          *      Simple code enables easy maintenance and reduces logical errors.
 654          */
 655         if (enable == TRUE) {
 656                 return _load_driver_and_supplicant();
 657         } else {
 658                 if (connman_wifi_technology_state == TRUE)
 659                         return -ENOSYS;
 660
 661                 return _remove_driver_and_supplicant();
 662         }
 663 }
 664
 665 void wifi_power_disable_technology_state_by_only_connman_signal(void)
 666 {
 667         /* Important: it's only done by ConnMan technology signal update */
 668         connman_wifi_technology_state = FALSE;
 669 }
 670
 671 void wifi_power_recover_firmware(void)
 672 {
 673         wifi_firmware_recovery_mode = TRUE;
 674
 675         netconfig_wifi_bgscan_stop();
 676
 677         wifi_power_off();
 678 }
 679
 680 int wifi_power_on(void)
 681 {
 682         int err = 0;
 683         wifi_tech_state_e tech_state;
 684
 685         tech_state = wifi_state_get_technology_state();
 686         if (tech_state >= NETCONFIG_WIFI_TECH_POWERED) {
 687                 /* There can be a scenario where wifi is automatically *
 688                  * activated by connman if wifi was powered in last boot. *
 689                  * So we should update connman_wifi_technology_state variable *
 690                  * if it is found that wifi_tech_state variable is *
 691                  * NETCONFIG_WIFI_TECH_POWERED and connman_wifi_technology_state *
 692                  * variable is FALSE. Earlier connman_wifi_technology_state *
 693                  * variable was only updated when wifi was Powered on from *
 694                  * net-config resulting in variable not getting updated. *
 695                  * This caused wifi to not get deactivated after reboot if *
 696                  * last power state was activated */
 697                 ERR("Net-Config WiFi connman technology state %d",
 698                                 connman_wifi_technology_state);
 699                 if (connman_wifi_technology_state == FALSE)
 700                         connman_wifi_technology_state = TRUE;
 701                 return -EALREADY;
 702         }
 703
 704         if (__is_wifi_restricted() == TRUE)
 705                 return -EPERM;
 706
 707         if (netconfig_is_wifi_tethering_on() == TRUE) {
 708                 /* TODO: Wi-Fi tethering turns off here */
 709                 /* return TRUE; */
 710                 ERR("Failed to turn tethering off");
 711                 return -EBUSY;
 712         }
 713
 714         err = wifi_power_driver_and_supplicant(TRUE);
 715         if (err < 0 && err != -EALREADY)
 716                 return err;
 717
 718         err = _set_connman_technology_power(TRUE);
 719
 720         return err;
 721 }
 722
 723 int wifi_power_off(void)
 724 {
 725         int err;
 726
 727         err = _set_connman_technology_power(FALSE);
 728         if (err == -EALREADY)
 729                 wifi_state_update_power_state(FALSE);
 730
 731         return 0;
 732 }
 733
 734 #if defined TIZEN_WEARABLE
 735 int wifi_power_on_wearable(gboolean device_picker_test)
 736 {
 737         int err = 0;
 738         wifi_tech_state_e tech_state;
 739
 740         tech_state = wifi_state_get_technology_state();
 741         if (tech_state >= NETCONFIG_WIFI_TECH_POWERED)
 742                 return -EALREADY;
 743
 744         err = wifi_power_driver_and_supplicant(TRUE);
 745         if (err < 0 && err != -EALREADY)
 746                 return err;
 747
 748         err = _set_connman_technology_power(TRUE);
 749
 750         if (device_picker_test == TRUE)
 751                 netconfig_wifi_enable_device_picker_test();
 752
 753         return err;
 754 }
 755 #endif
 756
 757 void wifi_power_initialize(void)
 758 {
 759         int wifi_last_power_state = 0;
 760
 761         /* Initialize Airplane mode */
 762         netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_FLIGHT_MODE, &airplane_mode);
 763         DBG("Airplane[%s]", airplane_mode > 0 ? "ON" : "OFF");
 764
 765         /* Update the last Wi-Fi power state */
 766         netconfig_vconf_get_int(VCONF_WIFI_LAST_POWER_STATE, &wifi_last_power_state);
 767         if (wifi_last_power_state > VCONFKEY_WIFI_OFF) {
 768                 if (TIZEN_TELEPHONY_ENABLE) {
 769                         int telephony_ready = 0;
 770                         netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_READY, &telephony_ready);
 771                         if (telephony_ready == 0) {
 772                                 DBG("Telephony API is not initialized yet");
 773                                 vconf_notify_key_changed(VCONFKEY_TELEPHONY_READY,
 774                                                 __netconfig_telephony_ready_changed_cb, NULL);
 775                         } else {
 776                                 if (netconfig_tapi_check_sim_state() == FALSE)
 777                                         DBG("SIM is not initialized yet");
 778                         }
 779                 }
 780                 DBG("Turn Wi-Fi on automatically");
 781 #if defined TIZEN_WEARABLE
 782                 wifi_power_on_wearable(TRUE);
 783 #else
 784                 wifi_power_on();
 785 #endif
 786         }
 787
 788 #if defined TIZEN_WEARABLE
 789         vconf_notify_key_changed(VCONFKEY_TELEPHONY_FLIGHT_MODE,
 790                         __netconfig_wifi_airplane_mode, NULL);
 791 #else
 792         vconf_notify_key_changed(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE,
 793                         __netconfig_wifi_restrict_mode, NULL);
 794         vconf_notify_key_changed(VCONFKEY_TELEPHONY_FLIGHT_MODE,
 795                         __netconfig_wifi_airplane_mode, NULL);
 796 #endif
 797
 798         vconf_notify_key_changed(VCONFKEY_SETAPPL_PSMODE, __emergency_mode_changed_cb, NULL);
 799         vconf_notify_key_changed(VCONFKEY_PM_STATE, __pm_state_changed_cb, NULL);
 800 }
 801
 802 void wifi_power_deinitialize(void)
 803 {
 804 }
 805
 806 gboolean handle_load_driver(Wifi *wifi,
 807                 GDBusMethodInvocation *context, gboolean device_picker_test)
 808 {
 809         int err;
 810
 811         DBG("Wi-Fi power on requested");
 812
 813         g_return_val_if_fail(wifi != NULL, TRUE);
 814
 815         if (!netconfig_dpm_update_from_wifi()) {
 816                 DBG("DPM policy restricts Wi-Fi");
 817                 netconfig_error_permission_denied(context);
 818                 return TRUE;
 819         }
 820
 821         if (TIZEN_WLAN_BOARD_SPRD)
 822                 wifi_firmware_download();
 823
 824 #if defined TIZEN_WEARABLE
 825         err = wifi_power_on_wearable(device_picker_test);
 826 #else
 827         err = wifi_power_on();
 828
 829         if (device_picker_test == TRUE)
 830                 netconfig_wifi_enable_device_picker_test();
 831 #endif
 832         if (err < 0) {
 833                 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
 840                 return TRUE;
 841         }
 842
 843
 844         netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0);
 845         __netconfig_set_wifi_bssid();
 846
 847         wifi_complete_load_driver(wifi, context);
 848         return TRUE;
 849 }
 850
 851 gboolean handle_remove_driver(Wifi *wifi, GDBusMethodInvocation *context)
 852 {
 853         int err;
 854
 855         DBG("Wi-Fi power off requested");
 856
 857         g_return_val_if_fail(wifi != NULL, TRUE);
 858
 859         err = wifi_power_off();
 860         if (err < 0) {
 861                 if (err == -EINPROGRESS)
 862                         netconfig_error_inprogress(context);
 863                 else if (err == -EALREADY)
 864                         netconfig_error_already_exists(context);
 865                 else if (err == -EPERM)
 866                         netconfig_error_permission_denied(context);
 867                 else
 868                         netconfig_error_wifi_driver_failed(context);
 869                 return TRUE;
 870         }
 871
 872         netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0);
 873
 874         wifi_complete_remove_driver(wifi, context);
 875         return TRUE;
 876 }
 877
 878 gboolean handle_load_p2p_driver(Wifi *wifi, GDBusMethodInvocation *context)
 879 {
 880         ERR("Deprecated");
 881
 882         wifi_complete_load_p2p_driver(wifi, context);
 883         return TRUE;
 884 }
 885
 886 gboolean handle_remove_p2p_driver(Wifi *wifi, GDBusMethodInvocation *context)
 887 {
 888         ERR("Deprecated");
 889
 890         wifi_complete_remove_p2p_driver(wifi, context);
 891         return TRUE;
 892 }
 893
 894 static int __netconfig_get_random_mac(unsigned char *mac_buf, int mac_len)
 895 {
 896         DBG("Generate Random Mac address of ethernet");
 897         FILE *fp;
 898         int rc;
 899
 900         fp = fopen(OS_RANDOM_FILE, "rb");
 901
 902         if (fp == NULL) {
 903                 ERR("Could not open /dev/urandom");
 904                 return -1;
 905         }
 906         rc = fread(mac_buf, 1, mac_len, fp);
 907         if (fp)
 908                 fclose(fp);
 909
 910         return rc != mac_len ? -1 : 0;
 911 }
 912
 913 void __netconfig_set_ether_macaddr()
 914 {
 915         DBG("Set wired Mac address ");
 916         char *mac_addr = NULL;
 917         char rand_addr[WLAN_MAC_ADDR_MAX];
 918         int rv = -1;
 919
 920         mac_addr = vconf_get_str(VCONF_ETH_MAC_ADDRESS);
 921         if (mac_addr == NULL) {
 922                 DBG("vconf_get_str Failed\n");
 923                 return;
 924         }
 925         /* Checking Invalid MAC Address */
 926         if ((strlen(mac_addr) == 0)) {
 927                 ERR("Failed to get valid MAC Address from vconf");
 928                 /*Generate the Random Mac address*/
 929                 unsigned char rand_mac_add[ETH_MAC_ADDR_SIZE+1];
 930
 931                 if (__netconfig_get_random_mac(rand_mac_add, ETH_MAC_ADDR_SIZE) == -1) {
 932
 933                         ERR("Could not generate the Random Mac address");
 934                         free(mac_addr);
 935                         return;
 936                 }
 937
 938                 rand_mac_add[0] &= 0xFE; /*Clear multicase bit*/
 939                 rand_mac_add[0] |= 0x02; /*set local assignment bit*/
 940
 941                 /*Set the Mac address in Vconf*/
 942                 snprintf(rand_addr, WLAN_MAC_ADDR_MAX, "%x:%x:%x:%x:%x:%x",
 943                                 rand_mac_add[0], rand_mac_add[1],
 944                                 rand_mac_add[2], rand_mac_add[3],
 945                                 rand_mac_add[4], rand_mac_add[5]);
 946
 947                 netconfig_set_vconf_str(VCONF_ETH_MAC_ADDRESS, rand_addr);
 948         } else { /* Valid MAC address */
 949                 g_strlcpy(rand_addr, mac_addr, WLAN_MAC_ADDR_MAX);
 950         }
 951
 952         DBG("MAC Address of eth0 [%s]", rand_addr);
 953         const char *path = NET_EXEC_PATH;
 954         char *const args[] = { "/sbin/ifconfig", "eth0", "hw",
 955                 "ether", rand_addr, "up", NULL};
 956         char *const envs[] = { NULL };
 957         rv = netconfig_execute_file(path, args, envs);
 958
 959         if (rv < 0)
 960                 ERR("Unable to execute system command");
 961         free(mac_addr);
 962
 963 }