eventlogchannel.h

This software aims to create an applet and panel tools to manage a wireless interface card, such as

//
// EventLogChannel.h
//
// $Id: //poco/Main/Foundation/include/Foundation/EventLogChannel.h#5 $
//
// Definition of the EventLogChannel class specific to WIN32.
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#ifndef Foundation_EventLogChannel_INCLUDED
#define Foundation_EventLogChannel_INCLUDED


#ifndef Foundation_Foundation_INCLUDED
#include "Foundation/Foundation.h"
#endif
#ifndef Foundation_Channel_INCLUDED
#include "Foundation/Channel.h"
#endif
#ifndef STD_WINDOWS_INCLUDED
#include <windows.h>
#define STD_WINDOWS_INCLUDED
#endif


Foundation_BEGIN


class Foundation_API EventLogChannel: public Channel
	/// This Windows-only channel works with the Windows NT Event Log
	/// service.
	///
	/// To work properly, the EventLogChannel class requires that either
	/// the PocoFoundation.dll or the PocoMsg.dll Dynamic Link Library
	/// containing the message definition resources can be found in $PATH.
{
public:
	EventLogChannel();
		/// Creates the EventLogChannel.
		/// The name of the current application (or more correctly,
		/// the name of its executable) is taken as event source name.
		
	EventLogChannel(const std::string& name);
		/// Creates the EventLogChannel with the given event source name.
		
	EventLogChannel(const std::string& name, const std::string& host);
		/// Creates an EventLogChannel with the given event source
		/// name that routes messages to the given host.
		
	void open();
		/// Opens the EventLogChannel. If necessary, the
		/// required registry entries to register a
		/// message resource DLL are made.
		
	void close();
		/// Closes the EventLogChannel.
	
	void log(const Message& msg);
		/// Logs the given message to the Windows Event Log.
		///
		/// The message type and priority are mapped to
		/// appropriate values for Event Log type and category.
		
	void setProperty(const std::string& name, const std::string& value);
		/// Sets or changes a configuration property. 
		///
		/// The following properties are supported:
		///
		///   * name: The name of the event source.
		///   * host: The name of the host where the Event Log service is running.
		///           The default is "localhost".
		///   * logFile: The name of the log file. The default is "Application".
		
	std::string getProperty(const std::string& name) const;
		/// Returns the value of the given property.

	static const std::string PROP_NAME;
	static const std::string PROP_HOST;
	static const std::string PROP_LOGFILE;

protected:
	~EventLogChannel();
	static int getType(const Message& msg);
	static int getCategory(const Message& msg);
	void setUpRegistry() const;
	static std::string findLibrary(const char* name);

private:
	std::string _name;
	std::string _host;
	std::string _logFile;
	HANDLE      _h;
};


Foundation_END


#endif // Foundation_EventLogChannel_INCLUDED