src/tethering_private.c

   1 /*
   2 * Copyright (c) 2011 Samsung Electronics Co., Ltd All Rights Reserved
   3 *
   4 * Licensed under the Apache License, Version 2.0 (the "License");
   5 * you may not use this file except in compliance with the License.
   6 * You may obtain a copy of the License at
   7 *
   8 * http://www.apache.org/licenses/LICENSE-2.0
   9 *
  10 * Unless required by applicable law or agreed to in writing, software
  11 * distributed under the License is distributed on an "AS IS" BASIS,
  12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 * See the License for the specific language governing permissions and
  14 * limitations under the License.
  15 */
  16
  17 #include <stdlib.h>
  18 #include <string.h>
  19 #include <system_info.h>
  20 #include "tethering_private.h"
  21
  22 static __thread bool is_feature_checked[TETHERING_SUPPORTED_FEATURE_MAX] = {0, };
  23 static __thread bool feature_supported[TETHERING_SUPPORTED_FEATURE_MAX] = {0, };
  24 static __thread GSList *tethering_handle_list = NULL;
  25
  26 bool __check_feature_supported(const char *key, tethering_supported_feature_e feature)
  27 {
  28         if (!is_feature_checked[feature]) {
  29                 if (system_info_get_platform_bool(key, &feature_supported[feature]) < 0) {
  30                         ERR("Get feature is failed");
  31                         return false;
  32                 }
  33
  34                 is_feature_checked[feature] = true;
  35         }
  36         return feature_supported[feature];
  37 }
  38
  39 int _tethering_check_feature_supported(const char* feature, ...)
  40 {
  41         va_list list;
  42         const char *key;
  43         bool value = false;
  44         bool supported = false;
  45
  46         va_start(list, feature);
  47         key = feature;
  48
  49         while (1) {
  50                 if ((strcmp(key, TETHERING_FEATURE) == 0))
  51                         value = __check_feature_supported(key, TETHERING_SUPPORTED_FEATURE);
  52                 if ((strcmp(key, TETHERING_WIFI_FEATURE) == 0))
  53                         value = __check_feature_supported(key, TETHERING_SUPPORTED_FEATURE_WIFI);
  54                 if ((strcmp(key, TETHERING_BT_FEATURE) == 0))
  55                         value = __check_feature_supported(key, TETHERING_SUPPORTED_FEATURE_BT);
  56                 if ((strcmp(key, TETHERING_USB_FEATURE) == 0))
  57                         value = __check_feature_supported(key, TETHERING_SUPPORTED_FEATURE_USB);
  58
  59                 supported |= value;
  60                 key = va_arg(list, const char *);
  61                 if (!key) break;
  62         }
  63
  64         if (!supported) {
  65                 ERR("Not supported feature");
  66                 set_last_result(TETHERING_ERROR_NOT_SUPPORT_API);
  67                 va_end(list);
  68                 return TETHERING_ERROR_NOT_SUPPORT_API;
  69         }
  70         va_end(list);
  71         set_last_result(TETHERING_ERROR_NONE);
  72
  73         return TETHERING_ERROR_NONE;
  74 }
  75
  76 void _tethering_add_handle(tethering_h handle)
  77 {
  78         tethering_handle_list = g_slist_append(tethering_handle_list, handle);
  79 }
  80
  81 void _tethering_remove_handle(tethering_h handle)
  82 {
  83         tethering_handle_list = g_slist_remove(tethering_handle_list, handle);
  84 }
  85
  86 bool _tethering_check_handle(tethering_h handle)
  87 {
  88         if (g_slist_find(tethering_handle_list, handle) != NULL)
  89                 return true;
  90         else
  91                 return false;
  92 }
  93