1/*
2 * Copyright (C) 2008, 2014 Apple Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef NetworkStateNotifier_h
27#define NetworkStateNotifier_h
28
29#include <functional>
30#include <wtf/FastMalloc.h>
31#include <wtf/Noncopyable.h>
32#include <wtf/Vector.h>
33
34#if PLATFORM(MAC)
35
36#include <wtf/RetainPtr.h>
37#include "Timer.h"
38
39typedef const struct __CFArray * CFArrayRef;
40typedef const struct __SCDynamicStore * SCDynamicStoreRef;
41
42#elif PLATFORM(WIN)
43
44#include <windows.h>
45
46#elif PLATFORM(IOS)
47
48#include <wtf/RetainPtr.h>
49OBJC_CLASS WebNetworkStateObserver;
50
51#endif
52
53namespace WebCore {
54
55class NetworkStateNotifier {
56    WTF_MAKE_NONCOPYABLE(NetworkStateNotifier); WTF_MAKE_FAST_ALLOCATED;
57public:
58    NetworkStateNotifier();
59#if PLATFORM(EFL) || PLATFORM(IOS)
60    ~NetworkStateNotifier();
61#endif
62    void addNetworkStateChangeListener(std::function<void (bool isOnLine)>);
63
64    bool onLine() const;
65
66private:
67#if !PLATFORM(IOS)
68    bool m_isOnLine;
69#endif
70    Vector<std::function<void (bool)>> m_listeners;
71
72    void notifyNetworkStateChange() const;
73    void updateState();
74
75#if PLATFORM(MAC)
76    void networkStateChangeTimerFired(Timer<NetworkStateNotifier>&);
77
78    static void dynamicStoreCallback(SCDynamicStoreRef, CFArrayRef changedKeys, void *info);
79
80    RetainPtr<SCDynamicStoreRef> m_store;
81    Timer<NetworkStateNotifier> m_networkStateChangeTimer;
82
83#elif PLATFORM(WIN)
84    static void CALLBACK addrChangeCallback(void*, BOOLEAN timedOut);
85    static void callAddressChanged(void*);
86    void addressChanged();
87
88    void registerForAddressChange();
89    HANDLE m_waitHandle;
90    OVERLAPPED m_overlapped;
91
92#elif PLATFORM(EFL)
93    void networkInterfaceChanged();
94    static Eina_Bool readSocketCallback(void* userData, Ecore_Fd_Handler*);
95
96    int m_netlinkSocket;
97    Ecore_Fd_Handler* m_fdHandler;
98
99#elif PLATFORM(IOS)
100    void registerObserverIfNecessary() const;
101    friend void setOnLine(const NetworkStateNotifier*, bool);
102
103    mutable bool m_isOnLine;
104    mutable bool m_isOnLineInitialized;
105    mutable RetainPtr<WebNetworkStateObserver> m_observer;
106#endif
107};
108
109#if !PLATFORM(COCOA) && !PLATFORM(WIN) && !PLATFORM(EFL)
110
111inline NetworkStateNotifier::NetworkStateNotifier()
112    : m_isOnLine(true)
113{
114}
115
116inline void NetworkStateNotifier::updateState() { }
117
118#endif
119
120#if !PLATFORM(IOS)
121inline bool NetworkStateNotifier::onLine() const
122{
123    return m_isOnLine;
124}
125#endif
126
127NetworkStateNotifier& networkStateNotifier();
128
129} // namespace WebCore
130
131#endif // NetworkStateNotifier_h
132