0aed504f4a
git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@5917 212acab6-be3b-0410-9dea-997c60f758d6
97 lines
1.7 KiB
C
97 lines
1.7 KiB
C
/*
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* plugin.c
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*
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* This file is a part of NSIS.
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*
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* Copyright (C) 1999-2009 Nullsoft and Contributors
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*
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* Licensed under the zlib/libpng license (the "License");
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* you may not use this file except in compliance with the License.
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*
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* Licence details can be found in the file COPYING.
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*
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* This software is provided 'as-is', without any express or implied
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* warranty.
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*/
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#include "plugin.h"
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#ifdef NSIS_CONFIG_PLUGIN_SUPPORT
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typedef struct _loaded_plugin
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{
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struct _loaded_plugin* next;
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NSISPLUGINCALLBACK proc;
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HMODULE dll;
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}
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loaded_plugin;
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static loaded_plugin* g_plugins = 0; // not thread safe!
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void NSISCALL Plugins_SendMsgToAllPlugins(int msg)
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{
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loaded_plugin* p;
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for (p = g_plugins; p; p = p->next)
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{
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p->proc(msg);
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}
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}
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void NSISCALL Plugins_UnloadAll()
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{
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loaded_plugin* p = g_plugins;
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Plugins_SendMsgToAllPlugins(NSPIM_UNLOAD);
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while (p)
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{
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loaded_plugin* oldp = p;
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p = oldp->next;
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FreeLibrary(oldp->dll);
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GlobalFree(oldp);
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}
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g_plugins = NULL;
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}
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BOOL NSISCALL Plugins_CanUnload(HANDLE pluginHandle)
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{
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loaded_plugin* p;
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for (p = g_plugins; p; p = p->next)
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{
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if (p->dll == pluginHandle)
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{
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return FALSE;
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}
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}
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return TRUE;
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}
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int NSISCALL RegisterPluginCallback(HMODULE pluginHandle, NSISPLUGINCALLBACK proc)
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{
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loaded_plugin* p;
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if (!Plugins_CanUnload(pluginHandle))
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{
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// already registered
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return 1;
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}
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p = (loaded_plugin*) GlobalAlloc(GPTR, sizeof(loaded_plugin));
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if (p)
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{
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p->proc = proc;
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p->dll = pluginHandle;
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p->next = g_plugins;
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g_plugins = p;
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return 0;
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}
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return -1;
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}
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#endif /* #ifdef NSIS_CONFIG_PLUGIN_SUPPORT */
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