/usr/include/guacamole/plugin.h is in libguac-dev 0.8.3-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* 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.
*
* The Initial Developer of the Original Code is
* Michael Jumper.
* Portions created by the Initial Developer are Copyright (C) 2010
* 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
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
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* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef _GUAC_PLUGIN_H
#define _GUAC_PLUGIN_H
#include "client.h"
/**
* Provides functions and structures required for handling a client plugin.
*
* @file plugin.h
*/
/**
* String prefix which begins the library filename of all client plugins.
*/
#define GUAC_PROTOCOL_LIBRARY_PREFIX "libguac-client-"
/**
* String suffix which ends the library filename of all client plugins.
*/
#define GUAC_PROTOCOL_LIBRARY_SUFFIX ".so"
/**
* The maximum number of characters (COUNTING NULL TERMINATOR) to allow
* for protocol names within the library filename of client plugins.
*/
#define GUAC_PROTOCOL_NAME_LIMIT 256
/**
* The maximum number of characters (INCLUDING NULL TERMINATOR) that a
* character array containing the concatenation of the library prefix,
* protocol name, and suffix can contain, assuming the protocol name is
* limited to GUAC_PROTOCOL_NAME_LIMIT characters.
*/
#define GUAC_PROTOCOL_LIBRARY_LIMIT ( \
\
sizeof(GUAC_PROTOCOL_LIBRARY_PREFIX) - 1 /* "libguac-client-" */ \
+ GUAC_PROTOCOL_NAME_LIMIT - 1 /* [up to 256 chars] */ \
+ sizeof(GUAC_PROTOCOL_LIBRARY_SUFFIX) - 1 /* ".so" */ \
+ 1 /* NULL terminator */ \
\
)
typedef struct guac_client_plugin guac_client_plugin;
/**
* A handle to a client plugin, containing enough information about the
* plugin to complete the initial protocol handshake and instantiate a new
* client supporting the protocol provided by the client plugin.
*/
struct guac_client_plugin {
/**
* Reference to dlopen'd client plugin.
*/
void* __client_plugin_handle;
/**
* Reference to the init handler of this client plugin. This
* function will be called when the client plugin is started.
*/
guac_client_init_handler* init_handler;
/**
* NULL-terminated array of all arguments accepted by this client
* plugin, in order. The values of these arguments will be passed
* to the init_handler if the client plugin is started.
*/
const char** args;
};
/**
* Open the plugin which provides support for the given protocol, if it
* exists.
*
* @param protocol The name of the protocol to retrieve the client plugin
* for.
* @return The client plugin supporting the given protocol, or NULL if
* an error occurs or no such plugin exists.
*/
guac_client_plugin* guac_client_plugin_open(const char* protocol);
/**
* Close the given plugin, releasing all associated resources. This function
* must be called after use of a client plugin is finished.
*
* @param plugin The client plugin to close.
* @return Zero on success, non-zero if an error occurred while releasing
* the resources associated with the plugin.
*/
int guac_client_plugin_close(guac_client_plugin* plugin);
/**
* Initializes the given guac_client using the initialization routine provided
* by the given guac_client_plugin.
*
* @param plugin The client plugin to use to initialize the new client.
* @param client The guac_client to initialize.
* @param argc The number of arguments being passed to the client.
* @param argv All arguments to be passed to the client.
* @return Zero if initialization was successful, non-zero otherwise.
*/
int guac_client_plugin_init_client(guac_client_plugin* plugin,
guac_client* client, int argc, char** argv);
#endif
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