SystemConfiguration.fproj/CaptiveNetwork.c

   1 /*
   2  * Copyright (c) 2009, 2010, 2012, 2013, 2015 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 #include <sys/types.h>
  26 #include <sys/param.h>
  27 #include <sys/stat.h>
  28 #include <dlfcn.h>
  29
  30 #include <SystemConfiguration/CaptiveNetwork.h>
  31 #include <SystemConfiguration/SCPrivate.h>
  32
  33
  34 #pragma mark -
  35 #pragma mark CaptiveNetwork.framework APIs (exported through the SystemConfiguration.framework)
  36
  37
  38 #if     TARGET_OS_IPHONE
  39 const CFStringRef kCNNetworkInfoKeySSIDData    = CFSTR("SSIDDATA");
  40 const CFStringRef kCNNetworkInfoKeySSID        = CFSTR("SSID");
  41 const CFStringRef kCNNetworkInfoKeyBSSID       = CFSTR("BSSID");
  42 #endif  // TARGET_OS_IPHONE
  43
  44
  45 static void *
  46 __loadCaptiveNetwork(void) {
  47         static void             *image  = NULL;
  48         static dispatch_once_t  once;
  49
  50         dispatch_once(&once, ^{
  51                 image = _SC_dlopen("/System/Library/PrivateFrameworks/CaptiveNetwork.framework/CaptiveNetwork");
  52         });
  53
  54         return image;
  55 }
  56
  57
  58 Boolean
  59 CNSetSupportedSSIDs(CFArrayRef ssidArray)
  60 {
  61         static typeof (CNSetSupportedSSIDs) *dyfunc = NULL;
  62         if (!dyfunc) {
  63                 void *image = __loadCaptiveNetwork();
  64                 if (image) dyfunc = dlsym(image, "__CNSetSupportedSSIDs");
  65         }
  66         return dyfunc ? dyfunc(ssidArray) : FALSE;
  67 }
  68
  69
  70 Boolean
  71 CNMarkPortalOnline(CFStringRef interfaceName)
  72 {
  73         static typeof (CNMarkPortalOnline) *dyfunc = NULL;
  74         if (!dyfunc) {
  75                 void *image = __loadCaptiveNetwork();
  76                 if (image) dyfunc = dlsym(image, "__CNMarkPortalOnline");
  77         }
  78         return dyfunc ? dyfunc(interfaceName) : FALSE;
  79 }
  80
  81
  82 Boolean
  83 CNMarkPortalOffline(CFStringRef interfaceName)
  84 {
  85         static typeof (CNMarkPortalOffline) *dyfunc = NULL;
  86         if (!dyfunc) {
  87                 void *image = __loadCaptiveNetwork();
  88                 if (image) dyfunc = dlsym(image, "__CNMarkPortalOffline");
  89         }
  90         return dyfunc ? dyfunc(interfaceName) : FALSE;
  91 }
  92
  93 CFArrayRef
  94 CNCopySupportedInterfaces(void)
  95 {
  96         static typeof (CNCopySupportedInterfaces) *dyfunc = NULL;
  97         if (!dyfunc) {
  98                 void *image = __loadCaptiveNetwork();
  99                 if (image) dyfunc = dlsym(image, "__CNCopySupportedInterfaces");
 100         }
 101         return dyfunc ? dyfunc() : NULL;
 102 }
 103
 104
 105 #if     TARGET_OS_IPHONE
 106 CFDictionaryRef
 107 CNCopyCurrentNetworkInfo(CFStringRef    interfaceName)
 108 {
 109         static typeof (CNCopyCurrentNetworkInfo) *dyfunc = NULL;
 110         if (!dyfunc) {
 111                 void *image = __loadCaptiveNetwork();
 112                 if (image) dyfunc = dlsym(image, "__CNCopyCurrentNetworkInfo");
 113         }
 114         return dyfunc ? dyfunc(interfaceName) : NULL;
 115 }
 116 #endif  // TARGET_OS_IPHONE