/usr/include/log4cxx/net/telnetappender.h is in liblog4cxx-dev 0.10.0-12.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _LOG4CXX_NET_TELNET_APPENDER_H
#define _LOG4CXX_NET_TELNET_APPENDER_H
#if defined(_MSC_VER)
#pragma warning ( push )
#pragma warning ( disable: 4231 4251 4275 4786 )
#endif
#include <log4cxx/appenderskeleton.h>
#include <log4cxx/helpers/socket.h>
#include <log4cxx/helpers/serversocket.h>
#include <log4cxx/helpers/thread.h>
#include <vector>
#include <log4cxx/helpers/charsetencoder.h>
namespace log4cxx
{
namespace helpers {
class ByteBuffer;
}
namespace net
{
/**
<p>The TelnetAppender is a log4cxx appender that specializes in
writing to a read-only socket. The output is provided in a
telnet-friendly way so that a log can be monitored over TCP/IP.
Clients using telnet connect to the socket and receive log data.
This is handy for remote monitoring, especially when monitoring a
servlet.
<p>Here is a list of the available configuration options:
<table border=1>
<tr>
<td align=center><b>Name</b></td>
<td align=center><b>Requirement</b></td>
<td align=center><b>Description</b></td>
<td align=center><b>Sample Value</b></td>
</tr>
<tr>
<td>Port</td>
<td>optional</td>
<td>This parameter determines the port to use for announcing log events. The default port is 23 (telnet).</td>
<td>5875</td>
</table>
*/
class LOG4CXX_EXPORT TelnetAppender : public AppenderSkeleton
{
class SocketHandler;
friend class SocketHandler;
private:
static const int DEFAULT_PORT;
static const int MAX_CONNECTIONS;
int port;
public:
DECLARE_LOG4CXX_OBJECT(TelnetAppender)
BEGIN_LOG4CXX_CAST_MAP()
LOG4CXX_CAST_ENTRY(TelnetAppender)
LOG4CXX_CAST_ENTRY_CHAIN(AppenderSkeleton)
END_LOG4CXX_CAST_MAP()
TelnetAppender();
~TelnetAppender();
/**
This appender requires a layout to format the text to the
attached client(s). */
virtual bool requiresLayout() const
{ return true; }
LogString getEncoding() const;
void setEncoding(const LogString& value);
/** all of the options have been set, create the socket handler and
wait for connections. */
void activateOptions(log4cxx::helpers::Pool& p);
/**
Set options
*/
virtual void setOption(const LogString& option, const LogString& value);
/**
Returns value of the <b>Port</b> option.
*/
int getPort() const
{ return port; }
/**
The <b>Port</b> option takes a positive integer representing
the port where the server is waiting for connections.
*/
void setPort(int port1)
{ this->port = port1; }
/** shuts down the appender. */
void close();
protected:
/** Handles a log event. For this appender, that means writing the
message to each connected client. */
virtual void append(const spi::LoggingEventPtr& event, log4cxx::helpers::Pool& p) ;
//---------------------------------------------------------- SocketHandler:
private:
// prevent copy and assignment statements
TelnetAppender(const TelnetAppender&);
TelnetAppender& operator=(const TelnetAppender&);
typedef log4cxx::helpers::SocketPtr Connection;
LOG4CXX_LIST_DEF(ConnectionList, Connection);
void write(log4cxx::helpers::ByteBuffer&);
void writeStatus(const log4cxx::helpers::SocketPtr& socket, const LogString& msg, log4cxx::helpers::Pool& p);
ConnectionList connections;
LogString encoding;
log4cxx::helpers::CharsetEncoderPtr encoder;
helpers::ServerSocket* serverSocket;
helpers::Thread sh;
size_t activeConnections;
static void* LOG4CXX_THREAD_FUNC acceptConnections(apr_thread_t* thread, void* data);
}; // class TelnetAppender
LOG4CXX_PTR_DEF(TelnetAppender);
} // namespace net
} // namespace log4cxx
#if defined(_MSC_VER)
#pragma warning ( pop )
#endif
#endif // _LOG4CXX_NET_TELNET_APPENDER_H
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