netwerk/system/win32/nsNotifyAddrListener.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set et sw=2 ts=4: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6 #ifndef NSNOTIFYADDRLISTENER_H_
   7 #define NSNOTIFYADDRLISTENER_H_
   8
   9 #include <windows.h>
  10 #include <winsock2.h>
  11 #include <iptypes.h>
  12 #include "nsINetworkLinkService.h"
  13 #include "nsIRunnable.h"
  14 #include "nsIObserver.h"
  15 #include "nsString.h"
  16 #include "nsTArray.h"
  17 #include "nsThreadUtils.h"
  18 #include "nsThreadPool.h"
  19 #include "nsCOMPtr.h"
  20 #include "mozilla/Atomics.h"
  21 #include "mozilla/TimeStamp.h"
  22 #include "mozilla/Mutex.h"
  23 #include "mozilla/SHA1.h"
  24 #include "mozilla/net/DNS.h"
  25
  26 class nsIThreadPool;
  27
  28 class nsNotifyAddrListener : public nsINetworkLinkService,
  29                              public nsIRunnable,
  30                              public nsIObserver {
  31   virtual ~nsNotifyAddrListener();
  32
  33  public:
  34   NS_DECL_THREADSAFE_ISUPPORTS
  35   NS_DECL_NSINETWORKLINKSERVICE
  36   NS_DECL_NSIRUNNABLE
  37   NS_DECL_NSIOBSERVER
  38
  39   nsNotifyAddrListener();
  40
  41   nsresult Init(void);
  42   void CheckLinkStatus(void);
  43   static void HashSortedNetworkIds(const std::vector<GUID> nwGUIDS,
  44                                    mozilla::SHA1Sum& sha1);
  45
  46  protected:
  47   bool mLinkUp;
  48   bool mStatusKnown;
  49   bool mCheckAttempted;
  50
  51   nsresult Shutdown(void);
  52   nsresult NotifyObservers(const char* aTopic, const char* aData);
  53
  54   DWORD CheckAdaptersAddresses(void);
  55
  56   // This threadpool only ever holds 1 thread. It is a threadpool and not a
  57   // regular thread so that we may call shutdownWithTimeout on it.
  58   nsCOMPtr<nsIThreadPool> mThread;
  59
  60  private:
  61   // Returns the new timeout period for coalescing (or INFINITE)
  62   DWORD nextCoalesceWaitTime();
  63
  64   // Called for every detected network change
  65   nsresult NetworkChanged();
  66
  67   // Figure out the current network identification
  68   void calculateNetworkId(void);
  69   bool findMac(char* gateway);
  70
  71   mozilla::Mutex mMutex;
  72   nsCString mNetworkId;
  73   nsTArray<nsCString> mDnsSuffixList;
  74   nsTArray<mozilla::net::NetAddr> mDNSResolvers;
  75
  76   HANDLE mCheckEvent;
  77
  78   // set true when mCheckEvent means shutdown
  79   mozilla::Atomic<bool> mShutdown;
  80
  81   // Contains a set of flags that codify the reasons for which
  82   // the platform indicates DNS should be used instead of TRR.
  83   mozilla::Atomic<uint32_t, mozilla::Relaxed> mPlatformDNSIndications;
  84
  85   // This is a checksum of various meta data for all network interfaces
  86   // considered UP at last check.
  87   ULONG mIPInterfaceChecksum;
  88
  89   // start time of the checking
  90   mozilla::TimeStamp mStartTime;
  91
  92   // Flag set while coalescing change events
  93   bool mCoalescingActive;
  94
  95   // Time stamp for first event during coalescing
  96   mozilla::TimeStamp mChangeTime;
  97 };
  98
  99 #endif /* NSNOTIFYADDRLISTENER_H_ */