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 "setting.h"
  33 #include "netdbus.h"
  34 #include "neterror.h"
  35 #include "wifi-wps.h"
  36 #include "wifi-scan.h"
  37 #include "wifi-bssid-scan.h"
  38 #include "wifi-power.h"
  39 #include "wifi-state.h"
  40 #include "netsupplicant.h"
  41 #include "network-state.h"
  42 #include "network-dpm.h"
  43 #include "wifi-firmware.h"
  44 #include "wifi-background-scan.h"
  45
  46 #define WLAN_SUPPLICANT_SCRIPT          "/usr/bin/wpa_supp.sh"
  47 #define P2P_SUPPLICANT_SCRIPT           "/usr/bin/p2p_supp.sh"
  48
  49 #if !defined TIZEN_WEARABLE
  50 #define VCONFKEY_SETAPPL_NETWORK_PERMIT_WITH_LCD_OFF_LIMIT      "db/setting/network_with_lcd_off_limit"
  51 #endif
  52
  53 #define WLAN_MAC_ADDR_MAX 20
  54 #define ETH_MAC_ADDR_SIZE 6
  55 #define NET_EXEC_PATH "/sbin/ifconfig"
  56 #define OS_RANDOM_FILE "/dev/urandom"
  57
  58 #define NETCONFIG_TECH_WAITING_INTERVAL 500
  59 #define NETCONFIG_TECH_WAITING_COUNT 6
  60 #define MAX_DRV_CMD_SIZE 248
  61 #define WLAN_IOCTL_SUSPEND (SIOCDEVPRIVATE + 1)
  62
  63 typedef struct {
  64         char *buf;
  65         int used_len;
  66         int total_len;
  67 } netconfig_wifi_priv_cmd;
  68
  69 static gboolean wifi_firmware_recovery_mode = FALSE;
  70 static int airplane_mode = 0;
  71 gboolean is_supplicant_running = FALSE;
  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         char *interface_name = user_data;
  95
  96         conn = G_DBUS_CONNECTION(source_object);
  97         reply = g_dbus_connection_call_finish(conn, res, &error);
  98
  99         if (reply == NULL) {
 100                 if (error != NULL) {
 101                         if (g_strstr_len(error->message, strlen(error->message),
 102                                         CONNMAN_ERROR_INTERFACE ".AlreadyEnabled") != NULL) {
 103                                 wifi_state_update_power_state(interface_name, TRUE);
 104                         } else if (g_strstr_len(error->message, strlen(error->message),
 105                                         CONNMAN_ERROR_INTERFACE ".AlreadyDisabled") != NULL) {
 106                                 wifi_state_update_power_state(interface_name, FALSE);
 107                         } else {
 108                                 ERR("Fail to request status [%d: %s]", error->code, error->message);
 109                                 wifi_state_update_power_state(interface_name, FALSE);
 110                         }
 111                         g_error_free(error);
 112                 } else {
 113                         ERR("Fail to request status");
 114                         wifi_state_update_power_state(interface_name, FALSE);
 115                 }
 116         } else {
 117                 DBG("Successfully requested");
 118                 g_variant_unref(reply);
 119         }
 120
 121         netconfig_gdbus_pending_call_unref();
 122         g_free(interface_name);
 123 }
 124
 125 void __mark_supplicant_stopped(void)
 126 {
 127         is_supplicant_running = FALSE;
 128 }
 129
 130 int __execute_supplicant(gboolean enable)
 131 {
 132         /*
 133          * TODO: [EAP on Ethernet] Temporary blocked wpa_supp.sh stop
 134          * untill ConnMan adds logic to trigger/control wpa_supplicant interface.
 135          */
 136         int rv = 0;
 137         const char *path = WLAN_SUPPLICANT_SCRIPT;
 138         char *const args_enable[] = { "/usr/bin/wpa_supp.sh", "start", NULL };
 139 #if 0
 140         char *const args_disable[] = { "/usr/bin/wpa_supp.sh", "stop", NULL };
 141 #endif
 142         char *const envs[] = { NULL };
 143
 144         if (is_supplicant_running == enable)
 145                 return -EALREADY;
 146
 147         if (enable == TRUE)
 148                 rv = netconfig_execute_file(path, args_enable, envs);
 149 #if 0
 150         else
 151                 rv = netconfig_execute_file(path, args_disable, envs);
 152 #endif
 153         if (rv < 0)
 154                 return -EIO;
 155
 156         DBG("wpa_supplicant %s", enable == TRUE ? "started" : "stopped");
 157
 158         if (enable)
 159                 is_supplicant_running = enable;
 160
 161         return 0;
 162 }
 163
 164 static int _load_driver_and_supplicant(const char *interface_name)
 165 {
 166         int err = 0;
 167         wifi_tech_state_e tech_state;
 168
 169         tech_state = wifi_state_get_technology_state(interface_name);
 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, interface_name, TRUE);
 178         if (err < 0 && err != -EALREADY) {
 179                 __execute_supplicant(FALSE);
 180                 return err;
 181         }
 182
 183         wifi_state_set_technology_state(interface_name, NETCONFIG_WIFI_TECH_WPS_ONLY);
 184
 185         return 0;
 186 }
 187
 188 static int _remove_driver_and_supplicant(const char *interface_name)
 189 {
 190         int err = 0;
 191
 192         DBG("remove driver and supplicant");
 193         if (wifi_firmware_recovery_mode != TRUE &&
 194                 netconfig_wifi_bssidscan_get_mode(interface_name) == TRUE) {
 195                 DBG("Wi-Fi WPS mode");
 196                 return 0;
 197         }
 198
 199         err = netconfig_wifi_firmware(NETCONFIG_WIFI_STA, interface_name, 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_technology_state(interface_name, NETCONFIG_WIFI_TECH_OFF);
 208
 209         // reset service state
 210         wifi_state_set_service_state(interface_name, NULL, NETCONFIG_WIFI_IDLE);
 211
 212         if (wifi_firmware_recovery_mode == TRUE) {
 213                 if (wifi_power_on(interface_name) < 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         wifi_tech_state_e tech_state = NETCONFIG_WIFI_TECH_UNKNOWN;
 226         gboolean value_enable = TRUE;
 227         gboolean reply = FALSE;
 228         GVariant *params = NULL;
 229         char *interface_name = data;
 230
 231         tech_state = wifi_state_get_technology_state(interface_name);
 232         if (tech_state == NETCONFIG_WIFI_TECH_UNKNOWN) {
 233                 retry_count--;
 234                 if (retry_count > 0)
 235                         return TRUE;
 236         }
 237
 238         params = g_variant_new("(sb)", interface_name, value_enable);
 239
 240         reply = netconfig_invoke_dbus_method_nonblock(CONNMAN_SERVICE,
 241                                         CONNMAN_WIFI_TECHNOLOGY_PREFIX,
 242                                         CONNMAN_TECHNOLOGY_INTERFACE,
 243                                         "SetDevicePower", params,
 244                                         __technology_reply,
 245                                         g_strdup(interface_name));
 246
 247         if (reply != TRUE) {
 248                 ERR("Fail to set technology enable");
 249                 wifi_state_update_power_state(interface_name, FALSE);
 250
 251                 retry_count = NETCONFIG_TECH_WAITING_COUNT;
 252                 g_free(interface_name);
 253                 return FALSE;
 254         }
 255
 256         retry_count = NETCONFIG_TECH_WAITING_COUNT;
 257         g_free(interface_name);
 258         return FALSE;
 259 }
 260
 261 static int _set_connman_technology_power(const char *interface_name, gboolean enable)
 262 {
 263         gboolean reply = FALSE;
 264         GVariant *params = NULL;
 265         gboolean value_enable = TRUE;
 266         gboolean value_disable = FALSE;
 267         gboolean powered = FALSE;
 268         wifi_tech_state_e tech_state = NETCONFIG_WIFI_TECH_UNKNOWN;
 269
 270         DBG("Set %s technology [%s]", interface_name, enable == TRUE ? "enable" : "disable");
 271
 272         powered = wifi_state_get_powered(interface_name);
 273         if (powered == enable) {
 274                 DBG("Already %s", enable ? "enabled" : "disabled");
 275                 return -EALREADY;
 276         }
 277
 278         if (enable == TRUE) {
 279                 tech_state = wifi_state_get_technology_state(interface_name);
 280                 if (tech_state == NETCONFIG_WIFI_TECH_UNKNOWN) {
 281                         netconfig_start_timer(NETCONFIG_TECH_WAITING_INTERVAL,
 282                                 __check_and_set_technology_enable, g_strdup(interface_name), NULL);
 283                         wifi_state_set_powered(interface_name, enable);
 284                         return 0;
 285                 }
 286         }
 287
 288         params = g_variant_new("(sb)", interface_name, (enable == TRUE) ? value_enable : value_disable);
 289
 290         reply = netconfig_invoke_dbus_method_nonblock(CONNMAN_SERVICE,
 291                 CONNMAN_WIFI_TECHNOLOGY_PREFIX, CONNMAN_TECHNOLOGY_INTERFACE,
 292                 "SetDevicePower", params, __technology_reply, g_strdup(interface_name));
 293
 294         if (reply != TRUE) {
 295                 ERR("Fail to set technology %s", enable == TRUE ? "enable" : "disable");
 296                 return -ESRCH;
 297         }
 298
 299         /* To be keep safe, early disable Wi-Fi tech state */
 300         if (enable != TRUE)
 301                 wifi_state_set_technology_state(interface_name, NETCONFIG_WIFI_TECH_WPS_ONLY);
 302
 303         return 0;
 304 }
 305
 306 #if !defined TIZEN_WEARABLE
 307 static void __netconfig_wifi_restrict_mode(keynode_t *node, void *user_data)
 308 {
 309         int wifi_state = 0, restricted = 0;
 310         GSList *list = NULL;
 311
 312         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 313
 314         if (node != NULL)
 315                 restricted = vconf_keynode_get_bool(node);
 316         else
 317                 netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE, &restricted);
 318
 319         DBG("network restricted mode %s", restricted > 0 ? "ON" : "OFF");
 320         DBG("wifi state: %d (0 off / 1 on / 2 connected)", wifi_state);
 321
 322         if (restricted > 0) {
 323                 /* network restricted on */
 324                 GSList *device_list = NULL;
 325
 326                 if (wifi_state == VCONFKEY_WIFI_OFF)
 327                         return;
 328
 329                 device_list = wifi_state_get_device_list();
 330                 for (list = device_list; list; list = list->next) {
 331                         wifi_device_data_s *device_data = list->data;
 332                         wifi_power_off(device_data->interface_name);
 333                         netconfig_setting_update_interface_off_for_restricted(device_data->interface_name, TRUE);
 334                 }
 335
 336                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, 1, TRUE);
 337         } else {
 338                 /* network restricted off */
 339                 GSList *ifname_list = NULL;
 340
 341                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, 0, TRUE);
 342
 343                 ifname_list = netconfig_setting_get_interfaces_off_by_restricted();
 344                 for (list = ifname_list; list; list = list->next) {
 345                         char *interface_name = list->data;
 346
 347                         if (wifi_state_get_technology_state(interface_name) > NETCONFIG_WIFI_TECH_OFF)
 348                                 continue;
 349
 350                         netconfig_setting_update_interface_off_for_restricted(interface_name, FALSE);
 351                         wifi_power_on(interface_name);
 352                 }
 353         }
 354 }
 355 #endif
 356
 357 static void __netconfig_wifi_airplane_mode(keynode_t *node, void *user_data)
 358 {
 359         int wifi_state = 0, airplane_state = 0;
 360         GSList *list = NULL;
 361
 362         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 363
 364         if (node != NULL)
 365                 airplane_state = vconf_keynode_get_bool(node);
 366         else
 367                 netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_FLIGHT_MODE, &airplane_state);
 368
 369         DBG("airplane mode %s (prev:%d)", airplane_state > 0 ? "ON" : "OFF", airplane_mode);
 370         DBG("wifi state: %d (0 off / 1 on / 2 connected)", wifi_state);
 371
 372         if (airplane_mode == airplane_state)
 373                 return;
 374
 375         airplane_mode = airplane_state;
 376
 377         if (airplane_state > 0) {
 378                 /* airplane mode on */
 379                 GSList *device_list = NULL;
 380
 381                 if (wifi_state == VCONFKEY_WIFI_OFF)
 382                         return;
 383
 384                 device_list = wifi_state_get_device_list();
 385                 for (list = device_list; list; list = list->next) {
 386                         wifi_device_data_s *device_data = list->data;
 387                         if (device_data->tech_state > NETCONFIG_WIFI_TECH_OFF) {
 388                                 wifi_power_off(device_data->interface_name);
 389                                 netconfig_setting_update_interface_off_for_airplane(device_data->interface_name, TRUE);
 390                         }
 391                 }
 392
 393                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 1, TRUE);
 394         } else {
 395                 /* airplane mode off */
 396                 GSList *ifname_list = NULL;
 397
 398                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0, TRUE);
 399
 400                 ifname_list = netconfig_setting_get_interfaces_off_by_airplane();
 401                 for (list = ifname_list; list; list = list->next) {
 402                         char *interface_name = list->data;
 403
 404                         if (wifi_state_get_technology_state(interface_name) > NETCONFIG_WIFI_TECH_OFF)
 405                                 continue;
 406
 407                         netconfig_setting_update_interface_off_for_airplane(interface_name, FALSE);
 408                         wifi_power_on(interface_name);
 409                 }
 410         }
 411 }
 412
 413 static void __emergency_mode_changed_cb(keynode_t *node, void *user_data)
 414 {
 415         int wifi_state = 0, emergency = 0;
 416         GSList *list = NULL;
 417 #if !defined TIZEN_WEARABLE
 418         int emergency_by_fmm = 0;
 419 #endif
 420
 421         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 422
 423 #if !defined TIZEN_WEARABLE
 424         netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_PERMIT_WITH_LCD_OFF_LIMIT, &emergency_by_fmm);
 425         DBG("emergency mode by Find My Mobile (%d)", emergency_by_fmm);
 426         if (emergency_by_fmm == 1)
 427                 return;
 428 #endif
 429
 430         if (node != NULL)
 431                 emergency = vconf_keynode_get_int(node);
 432         else
 433                 netconfig_vconf_get_int(VCONFKEY_SETAPPL_PSMODE, &emergency);
 434
 435         DBG("emergency mode %s", emergency > SETTING_PSMODE_POWERFUL ? "ON" : "OFF");
 436         DBG("wifi state: %d (0 off / 1 on / 2 connected)", wifi_state);
 437
 438 #if defined TIZEN_WEARABLE
 439         if (emergency == SETTING_PSMODE_WEARABLE) {
 440                 /* basic power saving mode on */
 441         } else if (emergency == SETTING_PSMODE_WEARABLE_ENHANCED) {
 442                 /* enhanced power saving mode on */
 443                 GSList *device_list = NULL;
 444
 445                 if (wifi_state == VCONFKEY_WIFI_OFF)
 446                         return;
 447
 448                 device_list = wifi_state_get_device_list();
 449                 for (list = device_list; list; list = list->next) {
 450                         wifi_device_data_s *device_data = list->data;
 451                         wifi_power_off(device_data->interface_name);
 452                         netconfig_setting_update_interface_off_for_emergency(device_data->interface_name, TRUE);
 453                 }
 454
 455                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 1, TRUE);
 456         } else {
 457                 /* power saving mode off */
 458                 GSList *ifname_list = NULL;
 459
 460                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 0, TRUE);
 461                 ifname_list = netconfig_setting_get_interfaces_off_by_emergency();
 462                 for (list = ifname_list; list; list = list->next) {
 463                         char *interface_name = list->data;
 464
 465                         if (wifi_state_get_technology_state(interface_name) > NETCONFIG_WIFI_TECH_OFF)
 466                                 continue;
 467
 468                         netconfig_setting_update_interface_off_for_emergency(interface_name, FALSE);
 469                         wifi_power_on_wearable(interface_name, TRUE);
 470                 }
 471         }
 472 #else
 473         if (emergency > SETTING_PSMODE_POWERFUL) {
 474                 /* emergency mode on */
 475                 GSList *device_list = NULL;
 476
 477                 if (wifi_state == VCONFKEY_WIFI_OFF)
 478                         return;
 479
 480                 device_list = wifi_state_get_device_list();
 481                 for (list = device_list; list; list = list->next) {
 482                         wifi_device_data_s *device_data = list->data;
 483                         wifi_power_off(device_data->interface_name);
 484                         netconfig_setting_update_interface_off_for_emergency(device_data->interface_name, TRUE);
 485                 }
 486
 487                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 1, TRUE);
 488         } else {
 489                 /* emergency mode off */
 490                 GSList *ifname_list = NULL;
 491
 492                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 0, TRUE);
 493
 494                 ifname_list = netconfig_setting_get_interfaces_off_by_emergency();
 495                 for (list = ifname_list; list; list = list->next) {
 496                         char *interface_name = list->data;
 497
 498                         if (wifi_state_get_technology_state(interface_name) > NETCONFIG_WIFI_TECH_OFF)
 499                                 continue;
 500
 501                         netconfig_setting_update_interface_off_for_emergency(interface_name, FALSE);
 502                         wifi_power_on(interface_name);
 503                 }
 504         }
 505 #endif
 506
 507 }
 508
 509 void wifi_set_early_suspend(const char *interface_name, gboolean value)
 510 {
 511         static gboolean old_state = FALSE;
 512         struct ifreq ifr;
 513         char buf[MAX_DRV_CMD_SIZE];
 514         netconfig_wifi_priv_cmd priv_cmd;
 515         int ret = 0;
 516         int ioctl_sock = 0;
 517         int pm_state = 0;
 518         wifi_service_state_e wifi_state;
 519         char error_buf[MAX_SIZE_ERROR_BUFFER] = {0, };
 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(interface_name);
 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, interface_name, 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: %s",
 556                                 strerror_r(errno, error_buf, MAX_SIZE_ERROR_BUFFER));
 557                 return;
 558         }
 559
 560         ret = ioctl(ioctl_sock, WLAN_IOCTL_SUSPEND, &ifr);
 561         if (ret < 0) {
 562                 ERR("Fail to issue private commands: %d. %s", ret,
 563                                 strerror_r(errno, error_buf, MAX_SIZE_ERROR_BUFFER));
 564         } else {
 565                 old_state = value;
 566         }
 567
 568         close(ioctl_sock);
 569 }
 570
 571 static void __pm_state_changed_cb(keynode_t* node, void* user_data)
 572 {
 573         int new_state = -1;
 574         int wifi_state = 0;
 575         static int prev_state = VCONFKEY_PM_STATE_NORMAL;
 576         GSList *list = NULL, *device_list = NULL;
 577
 578         if (netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state) < 0) {
 579                 ERR("Fail to get VCONFKEY_WIFI_STATE");
 580                 return;
 581         }
 582
 583         /* PM state
 584          *      VCONFKEY_PM_STATE_NORMAL = 1,
 585          *      VCONFKEY_PM_STATE_LCDDIM,
 586          *      VCONFKEY_PM_STATE_LCDOFF,
 587          *      VCONFKEY_PM_STATE_SLEEP
 588          */
 589         if (node != NULL)
 590                 new_state = vconf_keynode_get_int(node);
 591         else
 592                 netconfig_vconf_get_int(VCONFKEY_PM_STATE, &new_state);
 593
 594         DBG("wifi state: %d (0 off / 1 on / 2 connected)", wifi_state);
 595         DBG("Old PM state: %d, current: %d (1 normal / 2 lcddim / 3 lcdoff / 4 sleep)", prev_state, new_state);
 596
 597         if ((new_state == VCONFKEY_PM_STATE_NORMAL) && (prev_state >= VCONFKEY_PM_STATE_LCDOFF)) {
 598                 /* Send early suspend mode based on LCD state and disallow early suspend count */
 599                 device_list = wifi_state_get_device_list();
 600                 for (list = device_list; list; list = list->next) {
 601                         wifi_device_data_s *device_data = list->data;
 602                         if (device_data->powered == TRUE) {
 603                                 wifi_set_early_suspend(device_data->interface_name, FALSE);
 604                                 DBG("Unset early suspend [%s]", device_data->interface_name);
 605                         }
 606                         netconfig_wifi_bgscan_stop(device_data->interface_name);
 607                         netconfig_wifi_bgscan_set_exp_interval(device_data->interface_name, SCAN_EXPONENTIAL_MIN);
 608                         netconfig_wifi_bgscan_start(device_data->interface_name, TRUE);
 609                 }
 610         } else if ((new_state == VCONFKEY_PM_STATE_LCDOFF) && (prev_state < VCONFKEY_PM_STATE_LCDOFF) && (wifi_state != VCONFKEY_WIFI_OFF)) {
 611                 device_list = wifi_state_get_device_list();
 612                 for (list = device_list; list; list = list->next) {
 613                         wifi_device_data_s *device_data = list->data;
 614                         wifi_set_early_suspend(device_data->interface_name, TRUE);
 615                         DBG("Set early suspend [%s]", device_data->interface_name);
 616                 }
 617         }
 618
 619         prev_state = new_state;
 620 }
 621
 622 static void __netconfig_telephony_ready_changed_cb(keynode_t *node, void *data)
 623 {
 624         int telephony_ready = 0;
 625         char *interface_name = data;
 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(interface_name, TRUE);
 645 #else
 646         wifi_power_on(interface_name);
 647 #endif
 648
 649 done:
 650         vconf_ignore_key_changed(VCONFKEY_TELEPHONY_READY, __netconfig_telephony_ready_changed_cb);
 651         g_free(interface_name);
 652 }
 653
 654 int wifi_power_driver_and_supplicant(const char *interface_name, gboolean enable)
 655 {
 656         /* There are 3 thumb rules for Wi-Fi power management
 657          *   1. Do not make exposed API to control wpa_supplicant and driver directly.
 658          *      It probably breaks ConnMan technology operation.
 659          *
 660          *   2. Do not remove driver and wpa_supplicant if ConnMan already enabled.
 661          *      It breaks ConnMan technology operation.
 662          *
 663          *   3. Final the best rule: make it as simple as possible.
 664          *      Simple code enables easy maintenance and reduces logical errors.
 665          */
 666
 667         if (enable == TRUE) {
 668                 return _load_driver_and_supplicant(interface_name);
 669         } else {
 670                 if (wifi_state_get_powered(interface_name) == TRUE)
 671                         return -ENOSYS;
 672
 673                 return _remove_driver_and_supplicant(interface_name);
 674         }
 675 }
 676
 677 void wifi_power_recover_firmware(const char *interface_name)
 678 {
 679         wifi_firmware_recovery_mode = TRUE;
 680
 681         netconfig_wifi_bgscan_stop(interface_name);
 682
 683         wifi_power_off(interface_name);
 684 }
 685
 686 int wifi_power_on(const char *interface_name)
 687 {
 688         int err = 0;
 689         wifi_tech_state_e tech_state;
 690
 691         tech_state = wifi_state_get_technology_state(interface_name);
 692         if (tech_state >= NETCONFIG_WIFI_TECH_POWERED) {
 693                 INFO("Net-Config WiFi connman technology state %d", tech_state);
 694                 return -EALREADY;
 695         }
 696
 697         if (__is_wifi_restricted() == TRUE)
 698                 return -EPERM;
 699
 700         if (netconfig_is_wifi_tethering_on() == TRUE) {
 701                 /* TODO: Wi-Fi tethering turns off here */
 702                 /* return TRUE; */
 703                 ERR("Failed to turn tethering off");
 704                 return -EBUSY;
 705         }
 706
 707         err = wifi_power_driver_and_supplicant(interface_name, TRUE);
 708         if (err < 0 && err != -EALREADY)
 709                 return err;
 710
 711         err = _set_connman_technology_power(interface_name, TRUE);
 712         if (err < 0 && err != -EALREADY)
 713                 wifi_power_driver_and_supplicant(interface_name, FALSE);
 714
 715         return err;
 716 }
 717
 718 int wifi_power_off(const char *interface_name)
 719 {
 720         int err;
 721
 722         err = _set_connman_technology_power(interface_name, FALSE);
 723         if (err == -EALREADY)
 724                 wifi_state_update_power_state(interface_name, FALSE);
 725
 726         return err;
 727 }
 728
 729 #if defined TIZEN_WEARABLE
 730 int wifi_power_on_wearable(const char *interface_name, gboolean device_picker_test)
 731 {
 732         int err = 0;
 733         wifi_tech_state_e tech_state;
 734
 735         tech_state = wifi_state_get_technology_state(interface_name);
 736         if (tech_state >= NETCONFIG_WIFI_TECH_POWERED)
 737                 return -EALREADY;
 738
 739         err = wifi_power_driver_and_supplicant(interface_name, TRUE);
 740         if (err < 0 && err != -EALREADY)
 741                 return err;
 742
 743         err = _set_connman_technology_power(interface_name, TRUE);
 744         if (err < 0 && err != -EALREADY) {
 745                 wifi_power_driver_and_supplicant(interface_name, FALSE);
 746                 return err;
 747         }
 748
 749         if (device_picker_test == TRUE)
 750                 netconfig_wifi_enable_device_picker_test();
 751
 752         return err;
 753 }
 754 #endif
 755
 756 void wifi_power_initialize(void)
 757 {
 758         GSList *interface_list = NULL;
 759
 760         /* Initialize Airplane mode */
 761         netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_FLIGHT_MODE, &airplane_mode);
 762         DBG("Airplane[%s]", airplane_mode > 0 ? "ON" : "OFF");
 763
 764         /* Update the last Wi-Fi power state */
 765         interface_list = netconfig_setting_get_interfaces_for_last_powered();
 766         for (; interface_list; interface_list = interface_list->next) {
 767                 const char *interface_name = interface_list->data;
 768
 769                 if (TIZEN_TELEPHONY_ENABLE) {
 770                         int telephony_ready = 0;
 771                         netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_READY, &telephony_ready);
 772                         if (telephony_ready == 0) {
 773                                 DBG("Telephony API is not initialized yet");
 774                                 vconf_notify_key_changed(VCONFKEY_TELEPHONY_READY,
 775                                         __netconfig_telephony_ready_changed_cb,
 776                                         g_strdup(interface_name));
 777                         } else {
 778                                 if (netconfig_tapi_check_sim_state() == FALSE)
 779                                         DBG("SIM is not initialized yet");
 780                         }
 781                 }
 782                 DBG("Turn Wi-Fi on automatically");
 783 #if defined TIZEN_WEARABLE
 784                 wifi_power_on_wearable(interface_name, TRUE);
 785 #else
 786                 wifi_power_on(interface_name);
 787 #endif
 788         }
 789
 790 #if defined TIZEN_WEARABLE
 791         vconf_notify_key_changed(VCONFKEY_TELEPHONY_FLIGHT_MODE,
 792                         __netconfig_wifi_airplane_mode, NULL);
 793 #else
 794         vconf_notify_key_changed(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE,
 795                         __netconfig_wifi_restrict_mode, NULL);
 796         vconf_notify_key_changed(VCONFKEY_TELEPHONY_FLIGHT_MODE,
 797                         __netconfig_wifi_airplane_mode, NULL);
 798 #endif
 799
 800         vconf_notify_key_changed(VCONFKEY_SETAPPL_PSMODE,
 801                 __emergency_mode_changed_cb, NULL);
 802         vconf_notify_key_changed(VCONFKEY_PM_STATE, __pm_state_changed_cb, NULL);
 803 }
 804
 805 void wifi_power_deinitialize(void)
 806 {
 807 }
 808
 809 gboolean handle_load_driver(Wifi *wifi,
 810                 GDBusMethodInvocation *context,
 811                 const gchar *ifname, gboolean device_picker_test)
 812 {
 813         int err;
 814
 815         DBG("Wi-Fi power on requested [%s]", ifname);
 816
 817         g_return_val_if_fail(wifi != NULL, TRUE);
 818
 819         if (!netconfig_dpm_update_from_wifi()) {
 820                 DBG("DPM policy restricts Wi-Fi");
 821                 netconfig_error_permission_denied(context);
 822                 return TRUE;
 823         }
 824
 825         if (TIZEN_WLAN_BOARD_SPRD)
 826                 wifi_firmware_download();
 827
 828 #if defined TIZEN_WEARABLE
 829         err = wifi_power_on_wearable(ifname, device_picker_test);
 830 #else
 831         err = wifi_power_on(ifname);
 832
 833         if (device_picker_test == TRUE)
 834                 netconfig_wifi_enable_device_picker_test();
 835 #endif
 836         if (err < 0) {
 837                 if (err == -EALREADY)
 838                         netconfig_error_already_exists(context);
 839                 else if (err == -EPERM)
 840                         netconfig_error_permission_denied(context);
 841                 else
 842                         netconfig_error_wifi_driver_failed(context);
 843
 844                 return TRUE;
 845         }
 846
 847
 848         netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0, TRUE);
 849
 850         wifi_complete_load_driver(wifi, context);
 851         return TRUE;
 852 }
 853
 854 gboolean handle_remove_driver(Wifi *wifi, GDBusMethodInvocation *context,
 855                         const gchar *ifname)
 856 {
 857         int err;
 858
 859         DBG("Wi-Fi power off requested [%s]", ifname);
 860
 861         g_return_val_if_fail(wifi != NULL, TRUE);
 862
 863         err = wifi_power_off(ifname);
 864         if (err < 0) {
 865                 if (err == -EALREADY)
 866                         netconfig_error_already_exists(context);
 867                 else if (err == -EPERM)
 868                         netconfig_error_permission_denied(context);
 869                 else
 870                         netconfig_error_wifi_driver_failed(context);
 871                 return TRUE;
 872         }
 873
 874         netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0, TRUE);
 875
 876         wifi_complete_remove_driver(wifi, context);
 877         return TRUE;
 878 }
 879
 880 gboolean handle_load_p2p_driver(Wifi *wifi, GDBusMethodInvocation *context)
 881 {
 882         ERR("Deprecated");
 883
 884         wifi_complete_load_p2p_driver(wifi, context);
 885         return TRUE;
 886 }
 887
 888 gboolean handle_remove_p2p_driver(Wifi *wifi, GDBusMethodInvocation *context)
 889 {
 890         ERR("Deprecated");
 891
 892         wifi_complete_remove_p2p_driver(wifi, context);
 893         return TRUE;
 894 }
 895
 896 static int __netconfig_get_random_mac(unsigned char *mac_buf, int mac_len)
 897 {
 898         DBG("Generate Random Mac address of ethernet");
 899         FILE *fp;
 900         int rc;
 901
 902         fp = fopen(OS_RANDOM_FILE, "rb");
 903
 904         if (fp == NULL) {
 905                 ERR("Could not open /dev/urandom");
 906                 return -1;
 907         }
 908         rc = fread(mac_buf, 1, mac_len, fp);
 909         if (fp)
 910                 fclose(fp);
 911
 912         return rc != mac_len ? -1 : 0;
 913 }
 914
 915 void __netconfig_set_ether_macaddr()
 916 {
 917         DBG("Set wired Mac address ");
 918         char *mac_addr = NULL;
 919         char rand_addr[WLAN_MAC_ADDR_MAX];
 920         int rv = -1;
 921
 922         mac_addr = vconf_get_str(VCONF_ETH_MAC_ADDRESS);
 923         if (mac_addr == NULL) {
 924                 DBG("vconf_get_str Failed\n");
 925                 return;
 926         }
 927         /* Checking Invalid MAC Address */
 928         if ((strlen(mac_addr) == 0)) {
 929                 ERR("Failed to get valid MAC Address from vconf");
 930                 /*Generate the Random Mac address*/
 931                 unsigned char rand_mac_add[ETH_MAC_ADDR_SIZE+1];
 932
 933                 if (__netconfig_get_random_mac(rand_mac_add, ETH_MAC_ADDR_SIZE) == -1) {
 934
 935                         ERR("Could not generate the Random Mac address");
 936                         free(mac_addr);
 937                         return;
 938                 }
 939
 940                 rand_mac_add[0] &= 0xFE; /*Clear multicase bit*/
 941                 rand_mac_add[0] |= 0x02; /*set local assignment bit*/
 942
 943                 /*Set the Mac address in Vconf*/
 944                 snprintf(rand_addr, WLAN_MAC_ADDR_MAX, "%x:%x:%x:%x:%x:%x",
 945                                 rand_mac_add[0], rand_mac_add[1],
 946                                 rand_mac_add[2], rand_mac_add[3],
 947                                 rand_mac_add[4], rand_mac_add[5]);
 948
 949                 netconfig_set_vconf_str(VCONF_ETH_MAC_ADDRESS, rand_addr, TRUE);
 950         } else { /* Valid MAC address */
 951                 g_strlcpy(rand_addr, mac_addr, WLAN_MAC_ADDR_MAX);
 952         }
 953
 954         DBG("MAC Address of eth0 [%s]", rand_addr);
 955         const char *path = NET_EXEC_PATH;
 956         char *const args[] = { "/sbin/ifconfig", "eth0", "hw",
 957                 "ether", rand_addr, "up", NULL};
 958         char *const envs[] = { NULL };
 959         rv = netconfig_execute_file(path, args, envs);
 960
 961         if (rv < 0)
 962                 ERR("Unable to execute system command");
 963         free(mac_addr);
 964
 965 }