1/*
2 * Copyright (c) 2009, 2010, 2012, 2013 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
32
33#pragma mark -
34#pragma mark CaptiveNetwork.framework APIs (exported through the SystemConfiguration.framework)
35
36
37#if	TARGET_OS_IPHONE
38const CFStringRef kCNNetworkInfoKeySSIDData    = CFSTR("SSIDDATA");
39const CFStringRef kCNNetworkInfoKeySSID        = CFSTR("SSID");
40const CFStringRef kCNNetworkInfoKeyBSSID       = CFSTR("BSSID");
41#endif	// TARGET_OS_IPHONE
42
43
44static void *
45__loadCaptiveNetwork(void) {
46	static void *image = NULL;
47	if (NULL == image) {
48		const char	*framework		= "/System/Library/PrivateFrameworks/CaptiveNetwork.framework/CaptiveNetwork";
49		struct stat	statbuf;
50		const char	*suffix			= getenv("DYLD_IMAGE_SUFFIX");
51		char		path[MAXPATHLEN];
52
53		strlcpy(path, framework, sizeof(path));
54		if (suffix) strlcat(path, suffix, sizeof(path));
55		if (0 <= stat(path, &statbuf)) {
56			image = dlopen(path, RTLD_LAZY | RTLD_LOCAL);
57		} else {
58			image = dlopen(framework, RTLD_LAZY | RTLD_LOCAL);
59		}
60	}
61	return (void *)image;
62}
63
64
65Boolean
66CNSetSupportedSSIDs(CFArrayRef ssidArray)
67{
68	static typeof (CNSetSupportedSSIDs) *dyfunc = NULL;
69	if (!dyfunc) {
70		void *image = __loadCaptiveNetwork();
71		if (image) dyfunc = dlsym(image, "__CNSetSupportedSSIDs");
72	}
73	return dyfunc ? dyfunc(ssidArray) : FALSE;
74}
75
76
77Boolean
78CNMarkPortalOnline(CFStringRef interfaceName)
79{
80	static typeof (CNMarkPortalOnline) *dyfunc = NULL;
81	if (!dyfunc) {
82		void *image = __loadCaptiveNetwork();
83		if (image) dyfunc = dlsym(image, "__CNMarkPortalOnline");
84	}
85	return dyfunc ? dyfunc(interfaceName) : FALSE;
86}
87
88
89Boolean
90CNMarkPortalOffline(CFStringRef interfaceName)
91{
92	static typeof (CNMarkPortalOffline) *dyfunc = NULL;
93	if (!dyfunc) {
94		void *image = __loadCaptiveNetwork();
95		if (image) dyfunc = dlsym(image, "__CNMarkPortalOffline");
96	}
97	return dyfunc ? dyfunc(interfaceName) : FALSE;
98}
99
100CFArrayRef
101CNCopySupportedInterfaces(void)
102{
103	static typeof (CNCopySupportedInterfaces) *dyfunc = NULL;
104	if (!dyfunc) {
105		void *image = __loadCaptiveNetwork();
106		if (image) dyfunc = dlsym(image, "__CNCopySupportedInterfaces");
107	}
108	return dyfunc ? dyfunc() : NULL;
109}
110
111
112#if	TARGET_OS_IPHONE
113CFDictionaryRef
114CNCopyCurrentNetworkInfo(CFStringRef	interfaceName)
115{
116	static typeof (CNCopyCurrentNetworkInfo) *dyfunc = NULL;
117	if (!dyfunc) {
118		void *image = __loadCaptiveNetwork();
119		if (image) dyfunc = dlsym(image, "__CNCopyCurrentNetworkInfo");
120	}
121	return dyfunc ? dyfunc(interfaceName) : NULL;
122}
123#endif	// TARGET_OS_IPHONE
124