dom/wifi/WifiHotspotUtils.h

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 /**
   6  * Abstraction on top of the network support from libnetutils that we
   7  * use to set up network connections.
   8  */
   9
  10 #ifndef WifiHotspotUtils_h
  11 #define WifiHotspotUtils_h
  12
  13 // Forward declaration.
  14 struct wpa_ctrl;
  15
  16 class WifiHotspotUtils
  17 {
  18 public:
  19   static void* GetSharedLibrary();
  20
  21   int32_t do_wifi_connect_to_hostapd();
  22   int32_t do_wifi_close_hostapd_connection();
  23   int32_t do_wifi_hostapd_command(const char *command,
  24                                   char *reply,
  25                                   size_t *reply_len);
  26   int32_t do_wifi_hostapd_get_stations();
  27
  28 private:
  29   struct wpa_ctrl * openConnection(const char *ifname);
  30   int32_t sendCommand(struct wpa_ctrl *ctrl, const char *cmd,
  31                       char *reply, size_t *reply_len);
  32 };
  33
  34 // Defines a function type with the right arguments and return type.
  35 #define DEFINE_DLFUNC(name, ret, args...) typedef ret (*FUNC##name)(args);
  36
  37 // Set up a dlsymed function ready to use.
  38 #define USE_DLFUNC(name)                                                      \
  39   FUNC##name name = (FUNC##name) dlsym(GetSharedLibrary(), #name);            \
  40   if (!name) {                                                                \
  41     MOZ_CRASH("Symbol not found in shared library : " #name);                 \
  42   }
  43
  44 #endif // WifiHotspotUtils_h