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
  25 bool __check_feature_supported(const char *key, tethering_supported_feature_e feature)
  26 {
  27         if (!is_feature_checked[feature]) {
  28                 if (system_info_get_platform_bool(key, &feature_supported[feature]) < 0) {
  29                         ERR("Get feature is failed");
  30                         return false;
  31                 }
  32
  33                 feature_supported[feature] = true;
  34         }
  35         return feature_supported[feature];
  36 }
  37
  38 int _tethering_check_feature_supported(const char* feature, ...)
  39 {
  40         va_list list;
  41         const char *key;
  42         bool value = false;
  43         bool supported = false;
  44
  45         va_start(list, feature);
  46         key = feature;
  47         while (1) {
  48                 if ((strcmp(key, TETHERING_FEATURE) == 0))
  49                         value = __check_feature_supported(key, TETHERING_SUPPORTED_FEATURE);
  50                 if ((strcmp(key, TETHERING_WIFI_FEATURE) == 0))
  51                         value = __check_feature_supported(key, TETHERING_SUPPORTED_FEATURE);
  52                 if ((strcmp(key, TETHERING_BT_FEATURE) == 0))
  53                         value = __check_feature_supported(key, TETHERING_SUPPORTED_FEATURE);
  54                 if ((strcmp(key, TETHERING_USB_FEATURE) == 0))
  55                         value = __check_feature_supported(key, TETHERING_SUPPORTED_FEATURE);
  56
  57                 supported |= value;
  58                 key = va_arg(list, const char *);
  59                 if (!key) break;
  60         }
  61
  62         if (!supported) {
  63                 ERR("Not supported feature");
  64                 set_last_result(TETHERING_ERROR_NOT_SUPPORT_API);
  65                 va_end(list);
  66                 return TETHERING_ERROR_NOT_SUPPORT_API;
  67         }
  68         va_end(list);
  69         set_last_result(TETHERING_ERROR_NONE);
  70
  71         return TETHERING_ERROR_NONE;
  72 }