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 #define VCONF_WIFI_OFF_STATE_BY_AIRPLANE        "file/private/wifi/wifi_off_by_airplane"
  50 #define VCONF_WIFI_OFF_STATE_BY_RESTRICTED      "file/private/wifi/wifi_off_by_restricted"
  51 #define VCONF_WIFI_OFF_STATE_BY_EMERGENCY       "file/private/wifi/wifi_off_by_emergency"
  52 #if !defined TIZEN_WEARABLE
  53 #define VCONFKEY_SETAPPL_NETWORK_PERMIT_WITH_LCD_OFF_LIMIT      "db/setting/network_with_lcd_off_limit"
  54 #endif
  55
  56 #define WLAN_MAC_ADDR_MAX 20
  57 #define ETH_MAC_ADDR_SIZE 6
  58 #define VCONF_ETH_MAC_ADDRESS  "db/dnet/mac_address"
  59 #define NET_EXEC_PATH "/sbin/ifconfig"
  60 #define OS_RANDOM_FILE "/dev/urandom"
  61
  62 #define NETCONFIG_TECH_WAITING_INTERVAL 500
  63 #define NETCONFIG_TECH_WAITING_COUNT 6
  64 #define MAX_DRV_CMD_SIZE 248
  65 #define WLAN_IOCTL_SUSPEND (SIOCDEVPRIVATE + 1)
  66
  67 typedef struct {
  68         char *buf;
  69         int used_len;
  70         int total_len;
  71 } netconfig_wifi_priv_cmd;
  72
  73 static gboolean wifi_firmware_recovery_mode = FALSE;
  74 static int airplane_mode = 0;
  75
  76 static gboolean __is_wifi_restricted(void)
  77 {
  78 #if defined TIZEN_WEARABLE
  79         return FALSE;
  80 #endif
  81         int restricted_mode = 0;
  82
  83         netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE, &restricted_mode);
  84         if (restricted_mode != 0) {
  85                 DBG("network restricted mode[%d]", restricted_mode);
  86                 return TRUE;
  87         }
  88
  89         return FALSE;
  90 }
  91
  92 static void __technology_reply(GObject *source_object, GAsyncResult *res, gpointer user_data)
  93 {
  94         GVariant *reply;
  95         GDBusConnection *conn = NULL;
  96         GError *error = NULL;
  97         char *interface_name = user_data;
  98
  99         conn = G_DBUS_CONNECTION(source_object);
 100         reply = g_dbus_connection_call_finish(conn, res, &error);
 101
 102         if (reply == NULL) {
 103                 if (error != NULL) {
 104                         if (g_strstr_len(error->message, strlen(error->message),
 105                                         CONNMAN_ERROR_INTERFACE ".AlreadyEnabled") != NULL) {
 106                                 wifi_state_update_power_state(interface_name, TRUE);
 107                         } else if (g_strstr_len(error->message, strlen(error->message),
 108                                         CONNMAN_ERROR_INTERFACE ".AlreadyDisabled") != NULL) {
 109                                 wifi_state_update_power_state(interface_name, FALSE);
 110                         } else {
 111                                 ERR("Fail to request status [%d: %s]", error->code, error->message);
 112                                 wifi_state_update_power_state(interface_name, FALSE);
 113                         }
 114                         g_error_free(error);
 115                 } else {
 116                         ERR("Fail to request status");
 117                         wifi_state_update_power_state(interface_name, FALSE);
 118                 }
 119         } else {
 120                 DBG("Successfully requested");
 121                 g_variant_unref(reply);
 122         }
 123
 124         netconfig_gdbus_pending_call_unref();
 125         g_free(interface_name);
 126 }
 127
 128 int __execute_supplicant(gboolean enable)
 129 {
 130         /*
 131          * TODO: [EAP on Ethernet] Temporary blocked wpa_supp.sh stop
 132          * untill ConnMan adds logic to trigger/control wpa_supplicant interface.
 133          */
 134         int rv = 0;
 135         const char *path = WLAN_SUPPLICANT_SCRIPT;
 136         char *const args_enable[] = { "/usr/bin/wpa_supp.sh", "start", NULL };
 137 #if 0
 138         char *const args_disable[] = { "/usr/bin/wpa_supp.sh", "stop", NULL };
 139 #endif
 140         char *const envs[] = { NULL };
 141         static gboolean enabled = FALSE;
 142
 143         if (enabled == enable)
 144                 return -EALREADY;
 145
 146         if (enable == TRUE)
 147                 rv = netconfig_execute_file(path, args_enable, envs);
 148 #if 0
 149         else
 150                 rv = netconfig_execute_file(path, args_disable, envs);
 151 #endif
 152         if (rv < 0)
 153                 return -EIO;
 154
 155         DBG("wpa_supplicant %s", enable == TRUE ? "started" : "stopped");
 156
 157         if (enable)
 158                 enabled = enable;
 159
 160         return 0;
 161 }
 162
 163 static int _load_driver_and_supplicant(const char *interface_name)
 164 {
 165         int err = 0;
 166         wifi_tech_state_e tech_state;
 167
 168         tech_state = wifi_state_get_technology_state(interface_name);
 169         if (tech_state > NETCONFIG_WIFI_TECH_OFF)
 170                 return -EALREADY;
 171
 172         err = __execute_supplicant(TRUE);
 173         if (err < 0 && err != -EALREADY)
 174                 return err;
 175
 176         err = netconfig_wifi_firmware(NETCONFIG_WIFI_STA, interface_name, TRUE);
 177         if (err < 0 && err != -EALREADY) {
 178                 __execute_supplicant(FALSE);
 179                 return err;
 180         }
 181
 182         wifi_state_set_technology_state(interface_name, NETCONFIG_WIFI_TECH_WPS_ONLY);
 183
 184         return 0;
 185 }
 186
 187 static int _remove_driver_and_supplicant(const char *interface_name)
 188 {
 189         int err = 0;
 190
 191         DBG("remove driver and supplicant");
 192         if (wifi_firmware_recovery_mode != TRUE &&
 193                 netconfig_wifi_bssidscan_get_mode(interface_name) == TRUE) {
 194                 DBG("Wi-Fi WPS mode");
 195                 return 0;
 196         }
 197
 198         err = netconfig_wifi_firmware(NETCONFIG_WIFI_STA, interface_name, FALSE);
 199         if (err < 0 && err != -EALREADY)
 200                 return err;
 201
 202         err = __execute_supplicant(FALSE);
 203         if (err < 0 && err != -EALREADY)
 204                 return err;
 205
 206         wifi_state_set_technology_state(interface_name, NETCONFIG_WIFI_TECH_OFF);
 207
 208         // reset service state
 209         wifi_state_set_service_state(interface_name, NETCONFIG_WIFI_IDLE);
 210
 211         if (wifi_firmware_recovery_mode == TRUE) {
 212                 if (wifi_power_on(interface_name) < 0)
 213                         ERR("Failed to recover Wi-Fi firmware");
 214
 215                 wifi_firmware_recovery_mode = FALSE;
 216         }
 217
 218         return 0;
 219 }
 220
 221 static gboolean __check_and_set_technology_enable(gpointer data)
 222 {
 223         static int retry_count = NETCONFIG_TECH_WAITING_COUNT;
 224         wifi_tech_state_e tech_state = NETCONFIG_WIFI_TECH_UNKNOWN;
 225         gboolean value_enable = TRUE;
 226         gboolean reply = FALSE;
 227         GVariant *params = NULL;
 228         char *interface_name = data;
 229
 230         tech_state = wifi_state_get_technology_state(interface_name);
 231         if (tech_state == NETCONFIG_WIFI_TECH_UNKNOWN) {
 232                 retry_count--;
 233                 if (retry_count > 0)
 234                         return TRUE;
 235         }
 236
 237         params = g_variant_new("(sb)", interface_name, value_enable);
 238
 239         reply = netconfig_invoke_dbus_method_nonblock(CONNMAN_SERVICE,
 240                                         CONNMAN_WIFI_TECHNOLOGY_PREFIX,
 241                                         CONNMAN_TECHNOLOGY_INTERFACE,
 242                                         "SetDevicePower", params,
 243                                         __technology_reply,
 244                                         g_strdup(interface_name));
 245
 246         if (reply != TRUE) {
 247                 ERR("Fail to set technology enable");
 248                 wifi_state_update_power_state(interface_name, FALSE);
 249
 250                 retry_count = NETCONFIG_TECH_WAITING_COUNT;
 251                 g_free(interface_name);
 252                 return FALSE;
 253         }
 254
 255         retry_count = NETCONFIG_TECH_WAITING_COUNT;
 256         g_free(interface_name);
 257         return FALSE;
 258 }
 259
 260 static int _set_connman_technology_power(const char *interface_name, gboolean enable)
 261 {
 262         gboolean reply = FALSE;
 263         GVariant *params = NULL;
 264         gboolean value_enable = TRUE;
 265         gboolean value_disable = FALSE;
 266         gboolean powered = FALSE;
 267         wifi_tech_state_e tech_state = NETCONFIG_WIFI_TECH_UNKNOWN;
 268
 269         DBG("Set %s technology [%s]", interface_name, enable == TRUE ? "enable" : "disable");
 270
 271         powered = wifi_state_get_powered(interface_name);
 272         if (powered == enable) {
 273                 DBG("Already %s", enable ? "enabled" : "disabled");
 274                 return -EALREADY;
 275         }
 276
 277         if (enable == TRUE) {
 278                 tech_state = wifi_state_get_technology_state(interface_name);
 279                 if (tech_state == NETCONFIG_WIFI_TECH_UNKNOWN) {
 280                         netconfig_start_timer(NETCONFIG_TECH_WAITING_INTERVAL,
 281                                 __check_and_set_technology_enable, g_strdup(interface_name), NULL);
 282                         wifi_state_set_powered(interface_name, enable);
 283                         return 0;
 284                 }
 285         }
 286
 287         params = g_variant_new("(sb)", interface_name, (enable == TRUE) ? value_enable : value_disable);
 288
 289         reply = netconfig_invoke_dbus_method_nonblock(CONNMAN_SERVICE,
 290                 CONNMAN_WIFI_TECHNOLOGY_PREFIX, CONNMAN_TECHNOLOGY_INTERFACE,
 291                 "SetDevicePower", params, __technology_reply, g_strdup(interface_name));
 292
 293         if (reply != TRUE) {
 294                 ERR("Fail to set technology %s", enable == TRUE ? "enable" : "disable");
 295                 return -ESRCH;
 296         }
 297
 298         /* To be keep safe, early disable Wi-Fi tech state */
 299         if (enable != TRUE)
 300                 wifi_state_set_technology_state(interface_name, NETCONFIG_WIFI_TECH_WPS_ONLY);
 301
 302         return 0;
 303 }
 304
 305 #if !defined TIZEN_WEARABLE
 306 static void __netconfig_wifi_restrict_mode(keynode_t *node, void *user_data)
 307 {
 308         int wifi_state = 0, restricted = 0;
 309         GSList *list = NULL;
 310
 311         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 312
 313         if (node != NULL)
 314                 restricted = vconf_keynode_get_bool(node);
 315         else
 316                 netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE, &restricted);
 317
 318         DBG("network restricted mode %s", restricted > 0 ? "ON" : "OFF");
 319         DBG("wifi state: %d (0 off / 1 on / 2 connected)", wifi_state);
 320
 321         if (restricted > 0) {
 322                 /* network restricted on */
 323                 GSList *device_list = NULL;
 324
 325                 if (wifi_state == VCONFKEY_WIFI_OFF)
 326                         return;
 327
 328                 device_list = wifi_state_get_device_list();
 329                 for (list = device_list; list; list = list->next) {
 330                         wifi_device_data_s *device_data = list->data;
 331                         wifi_power_off(device_data->interface_name);
 332                         netconfig_setting_update_interface_off_for_restricted(device_data->interface_name, TRUE);
 333                 }
 334
 335                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, 1);
 336         } else {
 337                 /* network restricted off */
 338                 GSList *ifname_list = NULL;
 339
 340                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_RESTRICTED, 0);
 341
 342                 ifname_list = netconfig_setting_get_interfaces_off_by_restricted();
 343                 for (list = ifname_list; list; list = list->next) {
 344                         char *interface_name = list->data;
 345
 346                         if (wifi_state_get_technology_state(interface_name) > NETCONFIG_WIFI_TECH_OFF)
 347                                 continue;
 348
 349                         netconfig_setting_update_interface_off_for_restricted(interface_name, FALSE);
 350                         wifi_power_on(interface_name);
 351                 }
 352         }
 353 }
 354 #endif
 355
 356 static void __netconfig_wifi_airplane_mode(keynode_t *node, void *user_data)
 357 {
 358         int wifi_state = 0, airplane_state = 0;
 359         GSList *list = NULL;
 360
 361         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 362
 363         if (node != NULL)
 364                 airplane_state = vconf_keynode_get_bool(node);
 365         else
 366                 netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_FLIGHT_MODE, &airplane_state);
 367
 368         DBG("airplane mode %s (prev:%d)", airplane_state > 0 ? "ON" : "OFF", airplane_mode);
 369         DBG("wifi state: %d (0 off / 1 on / 2 connected)", wifi_state);
 370
 371         if (airplane_mode == airplane_state)
 372                 return;
 373
 374         airplane_mode = airplane_state;
 375
 376         if (airplane_state > 0) {
 377                 /* airplane mode on */
 378                 GSList *device_list = NULL;
 379
 380                 if (wifi_state == VCONFKEY_WIFI_OFF)
 381                         return;
 382
 383                 device_list = wifi_state_get_device_list();
 384                 for (list = device_list; list; list = list->next) {
 385                         wifi_device_data_s *device_data = list->data;
 386                         if (device_data->tech_state > NETCONFIG_WIFI_TECH_OFF) {
 387                                 wifi_power_off(device_data->interface_name);
 388                                 netconfig_setting_update_interface_off_for_airplane(device_data->interface_name, TRUE);
 389                         }
 390                 }
 391
 392                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 1);
 393         } else {
 394                 /* airplane mode off */
 395                 GSList *ifname_list = NULL;
 396
 397                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0);
 398
 399                 ifname_list = netconfig_setting_get_interfaces_off_by_airplane();
 400                 for (list = ifname_list; list; list = list->next) {
 401                         char *interface_name = list->data;
 402
 403                         if (wifi_state_get_technology_state(interface_name) > NETCONFIG_WIFI_TECH_OFF)
 404                                 continue;
 405
 406                         netconfig_setting_update_interface_off_for_airplane(interface_name, FALSE);
 407                         wifi_power_on(interface_name);
 408                 }
 409         }
 410 }
 411
 412 static void __emergency_mode_changed_cb(keynode_t *node, void *user_data)
 413 {
 414         int wifi_state = 0, emergency = 0;
 415         GSList *list = NULL;
 416 #if !defined TIZEN_WEARABLE
 417         int emergency_by_fmm = 0;
 418 #endif
 419
 420         netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state);
 421
 422 #if !defined TIZEN_WEARABLE
 423         netconfig_vconf_get_bool(VCONFKEY_SETAPPL_NETWORK_PERMIT_WITH_LCD_OFF_LIMIT, &emergency_by_fmm);
 424         DBG("emergency mode by Find My Mobile (%d)", emergency_by_fmm);
 425         if (emergency_by_fmm == 1)
 426                 return;
 427 #endif
 428
 429         if (node != NULL)
 430                 emergency = vconf_keynode_get_int(node);
 431         else
 432                 netconfig_vconf_get_int(VCONFKEY_SETAPPL_PSMODE, &emergency);
 433
 434         DBG("emergency mode %s", emergency > SETTING_PSMODE_POWERFUL ? "ON" : "OFF");
 435         DBG("wifi state: %d (0 off / 1 on / 2 connected)", wifi_state);
 436
 437 #if defined TIZEN_WEARABLE
 438         if (emergency == SETTING_PSMODE_WEARABLE) {
 439                 /* basic power saving mode on */
 440         } else if (emergency == SETTING_PSMODE_WEARABLE_ENHANCED) {
 441                 /* enhanced power saving mode on */
 442                 GSList *device_list = NULL;
 443
 444                 if (wifi_state == VCONFKEY_WIFI_OFF)
 445                         return;
 446
 447                 device_list = wifi_state_get_device_list();
 448                 for (list = device_list; list; list = list->next) {
 449                         wifi_device_data_s *device_data = list->data;
 450                         wifi_power_off(device_data->interface_name);
 451                         netconfig_setting_update_interface_off_for_emergency(device_data->interface_name, TRUE);
 452                 }
 453
 454                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 1);
 455         } else {
 456                 /* power saving mode off */
 457                 GSList *ifname_list = NULL;
 458
 459                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 0);
 460                 ifname_list = netconfig_setting_get_interfaces_off_by_emergency();
 461                 for (list = ifname_list; list; list = list->next) {
 462                         char *interface_name = list->data;
 463
 464                         if (wifi_state_get_technology_state(interface_name) > NETCONFIG_WIFI_TECH_OFF)
 465                                 continue;
 466
 467                         netconfig_setting_update_interface_off_for_emergency(interface_name, FALSE);
 468                         wifi_power_on_wearable(interface_name, TRUE);
 469                 }
 470         }
 471 #else
 472         if (emergency > SETTING_PSMODE_POWERFUL) {
 473                 /* emergency mode on */
 474                 GSList *device_list = NULL;
 475
 476                 if (wifi_state == VCONFKEY_WIFI_OFF)
 477                         return;
 478
 479                 device_list = wifi_state_get_device_list();
 480                 for (list = device_list; list; list = list->next) {
 481                         wifi_device_data_s *device_data = list->data;
 482                         wifi_power_off(device_data->interface_name);
 483                         netconfig_setting_update_interface_off_for_emergency(device_data->interface_name, TRUE);
 484                 }
 485
 486                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 1);
 487         } else {
 488                 /* emergency mode off */
 489                 GSList *ifname_list = NULL;
 490
 491                 netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_EMERGENCY, 0);
 492
 493                 ifname_list = netconfig_setting_get_interfaces_off_by_emergency();
 494                 for (list = ifname_list; list; list = list->next) {
 495                         char *interface_name = list->data;
 496
 497                         if (wifi_state_get_technology_state(interface_name) > NETCONFIG_WIFI_TECH_OFF)
 498                                 continue;
 499
 500                         netconfig_setting_update_interface_off_for_emergency(interface_name, FALSE);
 501                         wifi_power_on(interface_name);
 502                 }
 503         }
 504 #endif
 505
 506 }
 507
 508 void wifi_set_early_suspend(const char *interface_name, gboolean value)
 509 {
 510         static gboolean old_state = FALSE;
 511         struct ifreq ifr;
 512         char buf[MAX_DRV_CMD_SIZE];
 513         netconfig_wifi_priv_cmd priv_cmd;
 514         int ret = 0;
 515         int ioctl_sock = 0;
 516         int pm_state = 0;
 517         wifi_service_state_e wifi_state;
 518         char error_buf[MAX_SIZE_ERROR_BUFFER] = {0, };
 519
 520         if (old_state == value) {
 521                 DBG("Old and new states are same");
 522                 return;
 523         }
 524
 525         if (netconfig_vconf_get_int(VCONFKEY_PM_STATE, &pm_state) < 0)
 526                 ERR("Fail to get VCONFKEY_PM_STATE");
 527
 528         wifi_state = wifi_state_get_service_state(interface_name);
 529
 530         if (value == TRUE &&
 531                         (pm_state < VCONFKEY_PM_STATE_LCDOFF ||
 532                          wifi_state == NETCONFIG_WIFI_ASSOCIATION ||
 533                          wifi_state == NETCONFIG_WIFI_CONFIGURATION)){
 534                 DBG("");
 535                 return;
 536         }
 537
 538         memset(buf, 0, sizeof(buf));
 539         snprintf(buf, sizeof(buf), "SETSUSPENDMODE %d", value);
 540
 541         memset(&ifr, 0, sizeof(struct ifreq));
 542         g_strlcpy((char *)ifr.ifr_name, interface_name, IFNAMSIZ);
 543
 544         DBG("Early suspend command: [%s]", buf);
 545
 546         memset(&priv_cmd, 0, sizeof(priv_cmd));
 547         priv_cmd.buf = buf;
 548         priv_cmd.used_len = sizeof(buf);
 549         priv_cmd.total_len = sizeof(buf);
 550         ifr.ifr_data = (char *)&priv_cmd;
 551
 552         ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
 553         if (ioctl_sock < 0) {
 554                 DBG("socket(PF_INET,SOCK_DGRAM) failed: %s",
 555                                 strerror_r(errno, error_buf, MAX_SIZE_ERROR_BUFFER));
 556                 return;
 557         }
 558
 559         ret = ioctl(ioctl_sock, WLAN_IOCTL_SUSPEND, &ifr);
 560         if (ret < 0) {
 561                 ERR("Fail to issue private commands: %d. %s", ret,
 562                                 strerror_r(errno, error_buf, MAX_SIZE_ERROR_BUFFER));
 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         GSList *list = NULL, *device_list = NULL;
 576
 577         if (netconfig_vconf_get_int(VCONFKEY_WIFI_STATE, &wifi_state) < 0) {
 578                 ERR("Fail to get VCONFKEY_WIFI_STATE");
 579                 return;
 580         }
 581
 582         /* PM state
 583          *      VCONFKEY_PM_STATE_NORMAL = 1,
 584          *      VCONFKEY_PM_STATE_LCDDIM,
 585          *      VCONFKEY_PM_STATE_LCDOFF,
 586          *      VCONFKEY_PM_STATE_SLEEP
 587          */
 588         if (node != NULL)
 589                 new_state = vconf_keynode_get_int(node);
 590         else
 591                 netconfig_vconf_get_int(VCONFKEY_PM_STATE, &new_state);
 592
 593         DBG("wifi state: %d (0 off / 1 on / 2 connected)", wifi_state);
 594         DBG("Old PM state: %d, current: %d (1 normal / 2 lcddim / 3 lcdoff / 4 sleep)", prev_state, new_state);
 595
 596         if ((new_state == VCONFKEY_PM_STATE_NORMAL) && (prev_state >= VCONFKEY_PM_STATE_LCDOFF)) {
 597                 /* Send early suspend mode based on LCD state and disallow early suspend count */
 598                 device_list = wifi_state_get_device_list();
 599                 for (list = device_list; list; list = list->next) {
 600                         wifi_device_data_s *device_data = list->data;
 601                         if (device_data->powered == TRUE) {
 602                                 wifi_set_early_suspend(device_data->interface_name, FALSE);
 603                                 DBG("Unset early suspend [%s]", device_data->interface_name);
 604                         }
 605                         netconfig_wifi_bgscan_stop(device_data->interface_name);
 606                         netconfig_wifi_bgscan_set_interval(device_data->interface_name, SCAN_EXPONENTIAL_MIN);
 607                         netconfig_wifi_bgscan_start(device_data->interface_name, TRUE);
 608                 }
 609         } else if ((new_state == VCONFKEY_PM_STATE_LCDOFF) && (prev_state < VCONFKEY_PM_STATE_LCDOFF) && (wifi_state != VCONFKEY_WIFI_OFF)) {
 610                 device_list = wifi_state_get_device_list();
 611                 for (list = device_list; list; list = list->next) {
 612                         wifi_device_data_s *device_data = list->data;
 613                         wifi_set_early_suspend(device_data->interface_name, TRUE);
 614                         DBG("Set early suspend [%s]", device_data->interface_name);
 615                 }
 616         }
 617
 618         prev_state = new_state;
 619 }
 620
 621 static void __netconfig_telephony_ready_changed_cb(keynode_t *node, void *data)
 622 {
 623         int telephony_ready = 0;
 624         char *interface_name = data;
 625
 626         if (node != NULL)
 627                 telephony_ready = vconf_keynode_get_bool(node);
 628         else
 629                 netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_READY, &telephony_ready);
 630
 631         if (telephony_ready != 0) {
 632                 if (netconfig_tapi_check_sim_state() == FALSE) {
 633                         DBG("Sim is not initialized yet.");
 634
 635                         goto done;
 636                 }
 637         } else
 638                 return;
 639
 640         DBG("Turn Wi-Fi on automatically");
 641
 642 #if defined TIZEN_WEARABLE
 643         wifi_power_on_wearable(interface_name, TRUE);
 644 #else
 645         wifi_power_on(interface_name);
 646 #endif
 647
 648 done:
 649         vconf_ignore_key_changed(VCONFKEY_TELEPHONY_READY, __netconfig_telephony_ready_changed_cb);
 650         g_free(interface_name);
 651 }
 652
 653 int wifi_power_driver_and_supplicant(const char *interface_name, 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
 666         if (enable == TRUE) {
 667                 return _load_driver_and_supplicant(interface_name);
 668         } else {
 669                 if (wifi_state_get_powered(interface_name) == TRUE)
 670                         return -ENOSYS;
 671
 672                 return _remove_driver_and_supplicant(interface_name);
 673         }
 674 }
 675
 676 void wifi_power_recover_firmware(const char *interface_name)
 677 {
 678         wifi_firmware_recovery_mode = TRUE;
 679
 680         netconfig_wifi_bgscan_stop(interface_name);
 681
 682         wifi_power_off(interface_name);
 683 }
 684
 685 int wifi_power_on(const char *interface_name)
 686 {
 687         int err = 0;
 688         wifi_tech_state_e tech_state;
 689
 690         tech_state = wifi_state_get_technology_state(interface_name);
 691         if (tech_state >= NETCONFIG_WIFI_TECH_POWERED) {
 692                 INFO("Net-Config WiFi connman technology state %d", tech_state);
 693                 return -EALREADY;
 694         }
 695
 696         if (__is_wifi_restricted() == TRUE)
 697                 return -EPERM;
 698
 699         if (netconfig_is_wifi_tethering_on() == TRUE) {
 700                 /* TODO: Wi-Fi tethering turns off here */
 701                 /* return TRUE; */
 702                 ERR("Failed to turn tethering off");
 703                 return -EBUSY;
 704         }
 705
 706         err = wifi_power_driver_and_supplicant(interface_name, TRUE);
 707         if (err < 0 && err != -EALREADY)
 708                 return err;
 709
 710         err = _set_connman_technology_power(interface_name, TRUE);
 711
 712         return err;
 713 }
 714
 715 int wifi_power_off(const char *interface_name)
 716 {
 717         int err;
 718
 719         err = _set_connman_technology_power(interface_name, FALSE);
 720         if (err == -EALREADY)
 721                 wifi_state_update_power_state(interface_name, FALSE);
 722
 723         return err;
 724 }
 725
 726 #if defined TIZEN_WEARABLE
 727 int wifi_power_on_wearable(const char *interface_name, gboolean device_picker_test)
 728 {
 729         int err = 0;
 730         wifi_tech_state_e tech_state;
 731
 732         tech_state = wifi_state_get_technology_state(interface_name);
 733         if (tech_state >= NETCONFIG_WIFI_TECH_POWERED)
 734                 return -EALREADY;
 735
 736         err = wifi_power_driver_and_supplicant(interface_name, TRUE);
 737         if (err < 0 && err != -EALREADY)
 738                 return err;
 739
 740         err = _set_connman_technology_power(interface_name, TRUE);
 741
 742         if (device_picker_test == TRUE)
 743                 netconfig_wifi_enable_device_picker_test();
 744
 745         return err;
 746 }
 747 #endif
 748
 749 void wifi_power_initialize(void)
 750 {
 751         GSList *interface_list = NULL;
 752
 753         /* Initialize Airplane mode */
 754         netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_FLIGHT_MODE, &airplane_mode);
 755         DBG("Airplane[%s]", airplane_mode > 0 ? "ON" : "OFF");
 756
 757         /* Update the last Wi-Fi power state */
 758         interface_list = netconfig_setting_get_interfaces_for_last_powered();
 759         for (; interface_list; interface_list = interface_list->next) {
 760                 const char *interface_name = interface_list->data;
 761
 762                 if (TIZEN_TELEPHONY_ENABLE) {
 763                         int telephony_ready = 0;
 764                         netconfig_vconf_get_bool(VCONFKEY_TELEPHONY_READY, &telephony_ready);
 765                         if (telephony_ready == 0) {
 766                                 DBG("Telephony API is not initialized yet");
 767                                 vconf_notify_key_changed(VCONFKEY_TELEPHONY_READY,
 768                                         __netconfig_telephony_ready_changed_cb,
 769                                         g_strdup(interface_name));
 770                         } else {
 771                                 if (netconfig_tapi_check_sim_state() == FALSE)
 772                                         DBG("SIM is not initialized yet");
 773                         }
 774                 }
 775                 DBG("Turn Wi-Fi on automatically");
 776 #if defined TIZEN_WEARABLE
 777                 wifi_power_on_wearable(interface_name, TRUE);
 778 #else
 779                 wifi_power_on(interface_name);
 780 #endif
 781         }
 782
 783 #if defined TIZEN_WEARABLE
 784         vconf_notify_key_changed(VCONFKEY_TELEPHONY_FLIGHT_MODE,
 785                         __netconfig_wifi_airplane_mode, NULL);
 786 #else
 787         vconf_notify_key_changed(VCONFKEY_SETAPPL_NETWORK_RESTRICT_MODE,
 788                         __netconfig_wifi_restrict_mode, NULL);
 789         vconf_notify_key_changed(VCONFKEY_TELEPHONY_FLIGHT_MODE,
 790                         __netconfig_wifi_airplane_mode, NULL);
 791 #endif
 792
 793         vconf_notify_key_changed(VCONFKEY_SETAPPL_PSMODE,
 794                 __emergency_mode_changed_cb, NULL);
 795         vconf_notify_key_changed(VCONFKEY_PM_STATE, __pm_state_changed_cb, NULL);
 796 }
 797
 798 void wifi_power_deinitialize(void)
 799 {
 800 }
 801
 802 gboolean handle_load_driver(Wifi *wifi,
 803                 GDBusMethodInvocation *context,
 804                 const gchar *ifname, gboolean device_picker_test)
 805 {
 806         int err;
 807
 808         DBG("Wi-Fi power on requested [%s]", ifname);
 809
 810         g_return_val_if_fail(wifi != NULL, TRUE);
 811
 812         if (!netconfig_dpm_update_from_wifi()) {
 813                 DBG("DPM policy restricts Wi-Fi");
 814                 netconfig_error_permission_denied(context);
 815                 return TRUE;
 816         }
 817
 818         if (TIZEN_WLAN_BOARD_SPRD)
 819                 wifi_firmware_download();
 820
 821 #if defined TIZEN_WEARABLE
 822         err = wifi_power_on_wearable(ifname, device_picker_test);
 823 #else
 824         err = wifi_power_on(ifname);
 825
 826         if (device_picker_test == TRUE)
 827                 netconfig_wifi_enable_device_picker_test();
 828 #endif
 829         if (err < 0) {
 830                 if (err == -EALREADY)
 831                         netconfig_error_already_exists(context);
 832                 else if (err == -EPERM)
 833                         netconfig_error_permission_denied(context);
 834                 else
 835                         netconfig_error_wifi_driver_failed(context);
 836
 837                 return TRUE;
 838         }
 839
 840
 841         netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0);
 842
 843         wifi_complete_load_driver(wifi, context);
 844         return TRUE;
 845 }
 846
 847 gboolean handle_remove_driver(Wifi *wifi, GDBusMethodInvocation *context,
 848                         const gchar *ifname)
 849 {
 850         int err;
 851
 852         DBG("Wi-Fi power off requested [%s]", ifname);
 853
 854         g_return_val_if_fail(wifi != NULL, TRUE);
 855
 856         err = wifi_power_off(ifname);
 857         if (err < 0) {
 858                 if (err == -EINPROGRESS)
 859                         netconfig_error_inprogress(context);
 860                 else if (err == -EALREADY)
 861                         netconfig_error_already_exists(context);
 862                 else if (err == -EPERM)
 863                         netconfig_error_permission_denied(context);
 864                 else
 865                         netconfig_error_wifi_driver_failed(context);
 866                 return TRUE;
 867         }
 868
 869         netconfig_set_vconf_int(VCONF_WIFI_OFF_STATE_BY_AIRPLANE, 0);
 870
 871         wifi_complete_remove_driver(wifi, context);
 872         return TRUE;
 873 }
 874
 875 gboolean handle_load_p2p_driver(Wifi *wifi, GDBusMethodInvocation *context)
 876 {
 877         ERR("Deprecated");
 878
 879         wifi_complete_load_p2p_driver(wifi, context);
 880         return TRUE;
 881 }
 882
 883 gboolean handle_remove_p2p_driver(Wifi *wifi, GDBusMethodInvocation *context)
 884 {
 885         ERR("Deprecated");
 886
 887         wifi_complete_remove_p2p_driver(wifi, context);
 888         return TRUE;
 889 }
 890
 891 static int __netconfig_get_random_mac(unsigned char *mac_buf, int mac_len)
 892 {
 893         DBG("Generate Random Mac address of ethernet");
 894         FILE *fp;
 895         int rc;
 896
 897         fp = fopen(OS_RANDOM_FILE, "rb");
 898
 899         if (fp == NULL) {
 900                 ERR("Could not open /dev/urandom");
 901                 return -1;
 902         }
 903         rc = fread(mac_buf, 1, mac_len, fp);
 904         if (fp)
 905                 fclose(fp);
 906
 907         return rc != mac_len ? -1 : 0;
 908 }
 909
 910 void __netconfig_set_ether_macaddr()
 911 {
 912         DBG("Set wired Mac address ");
 913         char *mac_addr = NULL;
 914         char rand_addr[WLAN_MAC_ADDR_MAX];
 915         int rv = -1;
 916
 917         mac_addr = vconf_get_str(VCONF_ETH_MAC_ADDRESS);
 918         if (mac_addr == NULL) {
 919                 DBG("vconf_get_str Failed\n");
 920                 return;
 921         }
 922         /* Checking Invalid MAC Address */
 923         if ((strlen(mac_addr) == 0)) {
 924                 ERR("Failed to get valid MAC Address from vconf");
 925                 /*Generate the Random Mac address*/
 926                 unsigned char rand_mac_add[ETH_MAC_ADDR_SIZE+1];
 927
 928                 if (__netconfig_get_random_mac(rand_mac_add, ETH_MAC_ADDR_SIZE) == -1) {
 929
 930                         ERR("Could not generate the Random Mac address");
 931                         free(mac_addr);
 932                         return;
 933                 }
 934
 935                 rand_mac_add[0] &= 0xFE; /*Clear multicase bit*/
 936                 rand_mac_add[0] |= 0x02; /*set local assignment bit*/
 937
 938                 /*Set the Mac address in Vconf*/
 939                 snprintf(rand_addr, WLAN_MAC_ADDR_MAX, "%x:%x:%x:%x:%x:%x",
 940                                 rand_mac_add[0], rand_mac_add[1],
 941                                 rand_mac_add[2], rand_mac_add[3],
 942                                 rand_mac_add[4], rand_mac_add[5]);
 943
 944                 netconfig_set_vconf_str(VCONF_ETH_MAC_ADDRESS, rand_addr);
 945         } else { /* Valid MAC address */
 946                 g_strlcpy(rand_addr, mac_addr, WLAN_MAC_ADDR_MAX);
 947         }
 948
 949         DBG("MAC Address of eth0 [%s]", rand_addr);
 950         const char *path = NET_EXEC_PATH;
 951         char *const args[] = { "/sbin/ifconfig", "eth0", "hw",
 952                 "ether", rand_addr, "up", NULL};
 953         char *const envs[] = { NULL };
 954         rv = netconfig_execute_file(path, args, envs);
 955
 956         if (rv < 0)
 957                 ERR("Unable to execute system command");
 958         free(mac_addr);
 959
 960 }