371 lines
10 KiB
C++
371 lines
10 KiB
C++
/**
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* vim: set ts=4 sw=4 :
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* =============================================================================
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* SourceMod
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* Copyright (C) 2004-2009 AlliedModders LLC. All rights reserved.
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* =============================================================================
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, version 3.0, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* As a special exception, AlliedModders LLC gives you permission to link the
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* code of this program (as well as its derivative works) to "Half-Life 2," the
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* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
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* by the Valve Corporation. You must obey the GNU General Public License in
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* all respects for all other code used. Additionally, AlliedModders LLC grants
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* this exception to all derivative works. AlliedModders LLC defines further
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* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
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* or <http://www.sourcemod.net/license.php>.
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*
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* Version: $Id$
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*/
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#ifndef _INCLUDE_SOURCEMOD_PLUGINMNGR_INTERFACE_H_
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#define _INCLUDE_SOURCEMOD_PLUGINMNGR_INTERFACE_H_
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/**
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* @file IPluginSys.h
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* @brief Defines the interface for the Plugin System, which manages loaded plugins.
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*/
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#include <IShareSys.h>
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#include <IHandleSys.h>
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#include <sp_vm_api.h>
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#define SMINTERFACE_PLUGINSYSTEM_NAME "IPluginManager"
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#define SMINTERFACE_PLUGINSYSTEM_VERSION 3
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/** Context user slot 3 is used Core for holding an IPluginContext pointer. */
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#define SM_CONTEXTVAR_USER 3
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namespace SourceMod
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{
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class IPlugin;
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/**
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* @brief Encapsulates plugin public information exposed through "myinfo."
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*/
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typedef struct sm_plugininfo_s
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{
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const char *name; /**< Plugin name */
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const char *author; /**< Plugin author */
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const char *description; /**< Plugin description */
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const char *version; /**< Plugin version string */
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const char *url; /**< Plugin URL */
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} sm_plugininfo_t;
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/**
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* @brief Describes the usability status of a plugin.
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*/
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enum PluginStatus
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{
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Plugin_Running=0, /**< Plugin is running */
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/* All states below are unexecutable */
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Plugin_Paused, /**< Plugin is loaded but paused */
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Plugin_Error, /**< Plugin is loaded but errored/locked */
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/* All states below do not have all natives */
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Plugin_Loaded, /**< Plugin has passed loading and can be finalized */
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Plugin_Failed, /**< Plugin has a fatal failure */
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Plugin_Created, /**< Plugin is created but not initialized */
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Plugin_Uncompiled, /**< Plugin is not yet compiled by the JIT */
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Plugin_BadLoad, /**< Plugin failed to load */
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};
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/**
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* @brief Describes the object lifetime of a plugin.
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*/
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enum PluginType
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{
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PluginType_Private, /**< Plugin is privately managed and receives no forwards */
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PluginType_MapUpdated, /**< Plugin will never be unloaded unless for updates on mapchange */
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PluginType_MapOnly, /**< Plugin will be removed at mapchange */
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PluginType_Global, /**< Plugin will never be unloaded or updated */
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};
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/**
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* @brief Encapsulates a run-time plugin as maintained by SourceMod.
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*/
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class IPlugin
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{
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public:
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/** Virtual destructor */
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virtual ~IPlugin()
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{
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}
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/**
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* @brief Returns the lifetime of a plugin.
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*/
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virtual PluginType GetType() =0;
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/**
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* @brief Returns the IPluginRuntime::GetDefaultContext() value.
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*
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* @return Pointer to an IPluginContext, or NULL if not loaded.
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*/
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virtual SourcePawn::IPluginContext *GetBaseContext() =0;
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/**
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* @brief Deprecated, returns NULL.
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*
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* @return NULL.
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*/
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virtual sp_context_t *GetContext() =0;
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/**
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* @brief Deprecated, returns NULL.
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*
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* @return NULL.
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*/
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virtual void *GetPluginStructure() =0;
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/**
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* @brief Returns information about the plugin by reference.
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*
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* @return Pointer to a sm_plugininfo_t object, NULL if plugin is not loaded.
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*/
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virtual const sm_plugininfo_t *GetPublicInfo() =0;
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/**
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* @brief Returns the plugin filename (relative to plugins dir).
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*/
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virtual const char *GetFilename() =0;
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/**
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* @brief Returns true if a plugin is in debug mode, false otherwise.
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*/
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virtual bool IsDebugging() =0;
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/**
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* @brief Returns the plugin status.
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*/
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virtual PluginStatus GetStatus() =0;
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/**
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* @brief Sets whether the plugin is paused or not.
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*
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* @return True on successful state change, false otherwise.
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*/
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virtual bool SetPauseState(bool paused) =0;
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/**
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* @brief Returns the unique serial number of a plugin.
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*/
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virtual unsigned int GetSerial() =0;
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/**
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* @brief Returns a plugin's identity token.
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*/
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virtual IdentityToken_t *GetIdentity() =0;
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/**
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* @brief Sets a property on this plugin. This is used for per-plugin
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* data from extensions or other parts of core. The property's value must
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* be manually destructed when the plugin is destroyed.
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*
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* @param prop String containing name of the property.
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* @param ptr Generic pointer to set.
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* @return True on success, false if the property is already set.
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*/
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virtual bool SetProperty(const char *prop, void *ptr) =0;
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/**
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* @brief Gets a property from a plugin.
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*
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* @param prop String containing the property's name.
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* @param ptr Optional pointer to the generic pointer.
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* @param remove Optional boolean value; if true, property is removed
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* (so it can be set again).
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* @return True if the property existed, false otherwise.
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*/
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virtual bool GetProperty(const char *prop, void **ptr, bool remove=false) =0;
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/**
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* @brief Returns the runtime representing this plugin.
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*
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* @return IPluginRuntime pointer, or NULL if not loaded.
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*/
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virtual SourcePawn::IPluginRuntime *GetRuntime() =0;
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};
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/**
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* @brief Iterates over a list of plugins.
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*/
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class IPluginIterator
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{
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public:
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/** Virtual destructor */
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virtual ~IPluginIterator()
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{
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};
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public:
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/**
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* @brief Returns true if there are more plugins in the iterator.
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*/
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virtual bool MorePlugins() =0;
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/**
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* @brief Returns the plugin at the current iterator position.
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*/
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virtual IPlugin *GetPlugin() =0;
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/**
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* @brief Advances to the next plugin in the iterator.
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*/
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virtual void NextPlugin() =0;
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/**
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* @brief Destroys the iterator object.
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* Note: You may use 'delete' in lieu of this function.
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*/
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virtual void Release() =0;
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};
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/**
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* @brief Listens for plugin-oriented events.
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*/
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class IPluginsListener
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{
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public:
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/**
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* @brief Called when a plugin is created/mapped into memory.
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*/
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virtual void OnPluginCreated(IPlugin *plugin)
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{
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}
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/**
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* @brief Called when a plugin is fully loaded successfully.
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*/
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virtual void OnPluginLoaded(IPlugin *plugin)
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{
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}
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/**
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* @brief Called when a plugin is paused or unpaused.
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*/
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virtual void OnPluginPauseChange(IPlugin *plugin, bool paused)
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{
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}
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/**
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* @brief Called when a plugin is unloaded (only if fully loaded).
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*/
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virtual void OnPluginUnloaded(IPlugin *plugin)
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{
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}
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/**
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* @brief Called when a plugin is destroyed.
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* NOTE: Always called if Created, even if load failed.
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*/
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virtual void OnPluginDestroyed(IPlugin *plugin)
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{
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}
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};
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/**
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* @brief Manages the runtime loading and unloading of plugins.
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*/
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class IPluginManager : public SMInterface
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{
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public:
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virtual const char *GetInterfaceName()
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{
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return SMINTERFACE_PLUGINSYSTEM_NAME;
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}
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virtual unsigned int GetInterfaceVersion()
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{
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return SMINTERFACE_PLUGINSYSTEM_VERSION;
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}
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public:
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/**
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* @brief Attempts to load a plugin.
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*
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* @param path Path and filename of plugin, relative to plugins folder.
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* @param debug Deprecated, must be false.
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* @param type Lifetime of the plugin.
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* @param error Buffer to hold any error message.
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* @param maxlength Maximum length of error message buffer.
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* @param wasloaded Stores if the plugin is already loaded.
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* @return A new plugin pointer on success, false otherwise.
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*/
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virtual IPlugin *LoadPlugin(const char *path,
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bool debug,
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PluginType type,
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char error[],
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size_t maxlength,
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bool *wasloaded) =0;
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/**
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* @brief Attempts to unload a plugin.
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*
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* @param plugin Pointer to the plugin handle.
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* @return True on success, false otherwise.
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*/
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virtual bool UnloadPlugin(IPlugin *plugin) =0;
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/**
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* @brief Finds a plugin by its context.
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* Note: This function should be considered O(1).
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*
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* @param ctx Pointer to an sp_context_t.
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* @return Pointer to a matching IPlugin, or NULL if none found.
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*/
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virtual IPlugin *FindPluginByContext(const sp_context_t *ctx) =0;
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/**
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* @brief Returns the number of plugins (both failed and loaded).
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*
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* @return The number of internally cached plugins.
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*/
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virtual unsigned int GetPluginCount() =0;
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/**
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* @brief Returns a pointer that can be used to iterate through plugins.
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* Note: This pointer must be freed using EITHER delete OR IPluginIterator::Release().
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*/
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virtual IPluginIterator *GetPluginIterator() =0;
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/**
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* @brief Adds a plugin manager listener.
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*
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* @param listener Pointer to a listener.
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*/
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virtual void AddPluginsListener(IPluginsListener *listener) =0;
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/**
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* @brief Removes a plugin listener.
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*
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* @param listener Pointer to a listener.
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*/
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virtual void RemovePluginsListener(IPluginsListener *listener) =0;
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/**
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* @brief Converts a Handle to an IPlugin if possible.
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*
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* @param handle Handle.
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* @param err Error, set on failure (otherwise undefined).
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* @return IPlugin pointer, or NULL on failure.
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*/
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virtual IPlugin *PluginFromHandle(Handle_t handle, HandleError *err) =0;
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};
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}
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#endif //_INCLUDE_SOURCEMOD_PLUGINMNGR_INTERFACE_H_
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