guacamole-spice-protocol/src/protocols/rdp/guac_rdpdr/rdpdr_service.h

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is libguac-client-rdp.
 *
 * The Initial Developer of the Original Code is
 * Michael Jumper.
 * Portions created by the Initial Developer are Copyright (C) 2011
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * the provisions above, a recipient may use your version of this file under
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 * ***** END LICENSE BLOCK ***** */

#ifndef __GUAC_RDPDR_SERVICE_H
#define __GUAC_RDPDR_SERVICE_H

#include <pthread.h>

#ifdef ENABLE_WINPR
#include <winpr/stream.h>
#else
#include "compat/winpr-stream.h"
#endif

#include <guacamole/client.h>

/**
 * Structure representing the current state of the Guacamole RDPDR plugin for
 * FreeRDP.
 */
typedef struct guac_rdpdrPlugin {

    /**
     * The FreeRDP parts of this plugin. This absolutely MUST be first.
     * FreeRDP depends on accessing this structure as if it were an instance
     * of rdpSvcPlugin.
     */
    rdpSvcPlugin plugin;

    /**
     * Reference to the client owning this instance of the RDPDR plugin.
     */
    guac_client* client;

    /**
     * File descriptor that should be written to when sending documents to the
     * printer.
     */
    int printer_input;

    /**
     * File descriptor that should be read from when receiving output from the
     * printer.
     */
    int printer_output;

    /**
     * Thread which transfers data from the printer to the Guacamole client.
     */
    pthread_t printer_output_thread;

    /**
     * The number of bytes received in the current print job.
     */
    int bytes_received;

} guac_rdpdrPlugin;


/**
 * Handler called when this plugin is loaded by FreeRDP.
 */
void guac_rdpdr_process_connect(rdpSvcPlugin* plugin);

/**
 * Handler called when this plugin receives data along its designated channel.
 */
void guac_rdpdr_process_receive(rdpSvcPlugin* plugin,
        wStream* input_stream);

/**
 * Handler called when this plugin is being unloaded.
 */
void guac_rdpdr_process_terminate(rdpSvcPlugin* plugin);

/**
 * Handler called when this plugin receives an event. For the sake of RDPDR,
 * all events will be ignored and simply free'd.
 */
void guac_rdpdr_process_event(rdpSvcPlugin* plugin, wMessage* event);

#endif