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80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:expandtab:shiftwidth=4:tabstop=4:
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef NSDBUSSERVICE_H_
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#define NSDBUSSERVICE_H_
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#define DBUS_API_SUBJECT_TO_CHANGE
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#include <dbus/dbus.h>
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#include "nsITimer.h"
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#include "nsCOMPtr.h"
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class DBusClient {
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public:
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virtual void RegisterWithConnection(DBusConnection* connection) = 0;
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virtual void UnregisterWithConnection(DBusConnection* connection) = 0;
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virtual bool HandleMessage(DBusMessage* msg) = 0;
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};
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#define NS_DBUS_IID \
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{ 0xba4f79b7, 0x0d4c, 0x4b3a, { 0x8a, 0x85, 0x6f, 0xb3, 0x0d, 0xce, 0xf5, 0x11 } }
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/**
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* The nsDBusService component interfaces with DBUS to communicate with daemons
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* in systems supporting DBUS. It links dynamically to the DBUS libraries so
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* will not load on systems without those libraries ... but that's harmless.
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*
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* Currently the only daemon we communicate with is NetworkManager. We listen
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* for NetworkManager state changes; we set nsIOService's offline status to
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* FALSE when NetworkManager reports NM_STATE_CONNECTED, and to TRUE otherwise.
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* We also solicit the current status from NetworkManager when this component
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* gets loaded.
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*
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* In the future we could extend this class to talk to other daemons.
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*
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* Currently all communication is asynchronous. This isn't hard to implement
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* and avoids blocking our main thread.
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*/
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class nsDBusService : public nsISupports
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{
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protected:
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virtual ~nsDBusService();
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public:
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nsDBusService();
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NS_DECL_ISUPPORTS
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_DBUS_IID)
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static already_AddRefed<nsDBusService> Get();
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nsresult AddClient(DBusClient* client);
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void RemoveClient(DBusClient* client);
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DBusPendingCall* SendWithReply(DBusClient* client, DBusMessage* message);
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// these should be private but we need to call them from static functions
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bool HandleMessage(DBusMessage* message);
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void DoTimerCallback(nsITimer* aTimer);
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private:
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nsresult CreateConnection();
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void DropConnection();
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void HandleDBusDisconnect();
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static nsDBusService* gSingleton;
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DBusConnection* mConnection;
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nsCOMPtr<nsITimer> mReconnectTimer;
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DBusClient* mSingleClient;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsDBusService, NS_DBUS_IID)
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#endif /*NSDBUSSERVICE_H_*/
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