469 lines
12 KiB
C++
469 lines
12 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2015-2016 Cirilo Bernardo <cirilo.bernardo@gmail.com>
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* Copyright (C) 2021 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <iostream>
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#include <sstream>
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#include <wx/dynload.h>
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#include <wx/log.h>
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#include <wx/string.h>
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#include <wx/translation.h>
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#include "pluginldr.h"
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/**
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* Flag to enable plugin loader trace output.
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*
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* @ingroup trace_env_vars
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*/
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const wxChar* const tracePluginLoader = wxT( "KICAD_PLUGIN_LOADER" );
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KICAD_PLUGIN_LDR::KICAD_PLUGIN_LDR()
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{
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ok = false;
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m_getPluginClass = nullptr;
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m_getClassVersion = nullptr;
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m_checkClassVersion = nullptr;
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m_getPluginName = nullptr;
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m_getVersion = nullptr;
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return;
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}
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KICAD_PLUGIN_LDR::~KICAD_PLUGIN_LDR()
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{
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close();
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return;
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}
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bool KICAD_PLUGIN_LDR::open( const wxString& aFullFileName, const char* aPluginClass )
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{
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m_error.clear();
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if( ok )
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Close();
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if( aFullFileName.empty() )
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return false;
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m_fileName.clear();
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m_PluginLoader.Load( aFullFileName, wxDL_LAZY );
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if( !m_PluginLoader.IsLoaded() )
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{
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wxLogTrace( tracePluginLoader, wxT( " * could not open file: '%s'" ),
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aFullFileName.ToUTF8() );
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return false;
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}
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LINK_ITEM( m_getPluginClass, GET_PLUGIN_CLASS, "GetKicadPluginClass" );
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LINK_ITEM( m_getClassVersion, GET_CLASS_VERSION, "GetClassVersion" );
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LINK_ITEM( m_checkClassVersion, CHECK_CLASS_VERSION , "CheckClassVersion" );
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LINK_ITEM( m_getPluginName, GET_PLUGIN_NAME, "GetKicadPluginName" );
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LINK_ITEM( m_getVersion, GET_VERSION, "GetPluginVersion" );
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#ifdef DEBUG
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bool fail = false;
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if( !m_getPluginClass )
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{
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wxLogTrace( tracePluginLoader,
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wxT( "%s:%s:%d\n"
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"incompatible plugin (missing function 'GetKicadPluginClass')" ),
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__FILE__, __FUNCTION__, __LINE__ );
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fail = true;
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}
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if( !m_getClassVersion )
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{
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if( !fail )
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{
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wxLogTrace( tracePluginLoader,
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wxT( "%s:%s:%d\n"
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"incompatible plugin (missing function 'GetClassVersion')" ),
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__FILE__, __FUNCTION__, __LINE__ );
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fail = true;
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}
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else
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{
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wxLogTrace( tracePluginLoader, wxT( "missing function 'GetClassVersion'" ) );
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}
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}
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if( !m_checkClassVersion )
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{
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if( !fail )
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{
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wxLogTrace( tracePluginLoader,
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wxT( "%s:%s:%d\n"
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"incompatible plugin (missing function 'CheckClassVersion')" ),
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__FILE__, __FUNCTION__, __LINE__ );
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fail = true;
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}
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else
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{
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wxLogTrace( tracePluginLoader, wxT( "missing function 'CheckClassVersion'" ) );
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}
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}
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if( !m_getPluginName )
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{
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if( !fail )
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{
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wxLogTrace( tracePluginLoader,
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wxT( "%s:%s:%d\n"
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"incompatible plugin (missing function 'GetKicadPluginName')" ),
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__FILE__, __FUNCTION__, __LINE__ );
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fail = true;
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}
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else
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{
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wxLogTrace( tracePluginLoader, wxT( "missing function 'GetKicadPluginName'" ) );
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}
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}
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if( !m_getVersion )
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{
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if( !fail )
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{
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wxLogTrace( tracePluginLoader,
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wxT( "%s:%s:%d\n"
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"incompatible plugin (missing function 'GetVersion')" ),
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__FILE__, __FUNCTION__, __LINE__ );
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}
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else
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{
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wxLogTrace( tracePluginLoader, wxT( "missing function 'GetVersion'" ) );
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}
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}
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#endif
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if( !m_getPluginClass || !m_getClassVersion || !m_checkClassVersion
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|| !m_getPluginName || !m_getVersion )
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{
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m_error = "incompatible plugin interface (missing functions)";
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close();
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return false;
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}
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// note: since 'ok' is not yet set at this point we must use the function
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// pointers directly rather than invoking the functions exposed by this class
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// check that the Plugin Class matches
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char const* pclassName = m_getPluginClass();
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if( !pclassName || strcmp( aPluginClass, pclassName ) )
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{
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m_error = "Loader type (";
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m_error.append( aPluginClass );
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m_error.append( ") does not match Plugin type (" );
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if( pclassName )
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m_error.append( pclassName );
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else
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m_error.append( "nullptr" );
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m_error.append( ")" );
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close();
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return false;
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}
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// perform a universally enforced version check (major number must match)
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unsigned char lMajor;
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unsigned char lMinor;
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unsigned char lPatch;
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unsigned char lRevno;
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unsigned char pMajor;
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unsigned char pMinor;
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unsigned char pPatch;
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unsigned char pRevno;
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m_getClassVersion( &pMajor, &pMinor, &pPatch, &pRevno );
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GetLoaderVersion( &lMajor, &lMinor, &lPatch, &lRevno );
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// major version changes by definition are incompatible and that is enforced here.
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if( pMajor != lMajor )
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{
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std::ostringstream ostr;
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ostr << "Loader Major version (" << lMajor;
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ostr << ") does not match Plugin Major version (" << pMajor << ")";
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m_error = ostr.str();
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close();
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return false;
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}
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if( !m_checkClassVersion( lMajor, lMinor, lPatch, lRevno ) )
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{
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std::ostringstream ostr;
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ostr << "Plugin Version (" << pMajor << "." << pMinor << "." << pPatch << "." << pRevno;
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ostr << ") does not support Loader Version (" << pMajor << "." << pMinor;
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ostr << "." << pPatch << "." << pRevno << ")";
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m_error = ostr.str();
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close();
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return false;
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}
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m_fileName = aFullFileName;
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wxLogTrace( tracePluginLoader,
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wxT( "%s:%s:%d\n"
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" * [INFO] opened plugin '%s'" ),
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__FILE__, __FUNCTION__, __LINE__, m_fileName );
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ok = true;
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// set the plugin info string
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m_pluginInfo = GetKicadPluginName();
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std::ostringstream ostr;
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unsigned char r0, r1, r2, r3;
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GetVersion( &r0, &r1, &r2, &r3 );
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ostr << ":" << (unsigned int)r0 << "." << (unsigned int)r1;
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ostr << "." << (unsigned int)r2 << "." << (unsigned int)r3;
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m_pluginInfo.append( ostr.str() );
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return true;
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}
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void KICAD_PLUGIN_LDR::close( void )
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{
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ok = false;
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m_getPluginClass = nullptr;
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m_getClassVersion = nullptr;
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m_checkClassVersion = nullptr;
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m_getPluginName = nullptr;
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m_getVersion = nullptr;
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m_PluginLoader.Unload();
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return;
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}
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bool KICAD_PLUGIN_LDR::reopen( void )
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{
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m_error.clear();
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if( m_fileName.empty() )
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return false;
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wxString fname = m_fileName;
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return Open( fname );
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}
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std::string KICAD_PLUGIN_LDR::GetLastError( void ) const
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{
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return m_error;
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}
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char const* KICAD_PLUGIN_LDR::GetKicadPluginClass( void )
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{
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m_error.clear();
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if( !ok && !reopen() )
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{
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if( m_error.empty() )
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m_error = "[INFO] no open plugin / plugin could not be opened";
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return nullptr;
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}
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if( nullptr == m_getPluginClass )
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{
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m_error = "[BUG] GetPluginClass is not linked";
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wxLogTrace( tracePluginLoader, wxT( "%s:%s:%d\n"
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"%s" ),
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__FILE__, __FUNCTION__, __LINE__, m_error );;
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return nullptr;
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}
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return m_getPluginClass();
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}
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bool KICAD_PLUGIN_LDR::GetClassVersion( unsigned char* Major, unsigned char* Minor,
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unsigned char* Patch, unsigned char* Revision )
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{
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m_error.clear();
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if( Major )
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*Major = 0;
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if( Minor )
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*Minor = 0;
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if( Patch )
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*Patch = 0;
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if( Revision )
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*Revision = 0;
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unsigned char major;
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unsigned char minor;
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unsigned char patch;
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unsigned char revno;
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if( !ok && !reopen() )
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{
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if( m_error.empty() )
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m_error = "[INFO] no open plugin / plugin could not be opened";
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return false;
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}
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if( nullptr == m_checkClassVersion )
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{
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m_error = "[BUG] CheckClassVersion is not linked";
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wxLogTrace( tracePluginLoader, wxT( "%s:%s:%d\n"
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"%s" ),
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__FILE__, __FUNCTION__, __LINE__, m_error );;
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return false;
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}
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m_getClassVersion( &major, &minor, &patch, &revno );
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if( Major )
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*Major = major;
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if( Minor )
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*Minor = minor;
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if( Patch )
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*Patch = patch;
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if( Revision )
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*Revision = revno;
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return true;
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}
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bool KICAD_PLUGIN_LDR::CheckClassVersion( unsigned char Major, unsigned char Minor,
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unsigned char Patch, unsigned char Revision )
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{
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m_error.clear();
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if( !ok && !reopen() )
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{
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if( m_error.empty() )
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m_error = "[INFO] no open plugin / plugin could not be opened";
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return false;
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}
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if( nullptr == m_checkClassVersion )
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{
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m_error = "[BUG] CheckClassVersion is not linked";
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wxLogTrace( tracePluginLoader, wxT( "%s:%s:%d\n"
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"%s" ),
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__FILE__, __FUNCTION__, __LINE__, m_error );;
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return false;
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}
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return m_checkClassVersion( Major, Minor, Patch, Revision );
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}
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const char* KICAD_PLUGIN_LDR::GetKicadPluginName( void )
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{
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m_error.clear();
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if( !ok && !reopen() )
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{
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if( m_error.empty() )
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m_error = "[INFO] no open plugin / plugin could not be opened";
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return nullptr;
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}
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if( nullptr == m_getPluginName )
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{
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m_error = "[BUG] GetKicadPluginName is not linked";
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wxLogTrace( tracePluginLoader, wxT( "%s:%s:%d\n"
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"%s" ),
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__FILE__, __FUNCTION__, __LINE__, m_error );;
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return nullptr;
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}
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return m_getPluginName();
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}
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bool KICAD_PLUGIN_LDR::GetVersion( unsigned char* Major, unsigned char* Minor,
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unsigned char* Patch, unsigned char* Revision )
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{
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m_error.clear();
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if( !ok && !reopen() )
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{
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if( m_error.empty() )
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m_error = "[INFO] no open plugin / plugin could not be opened";
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return false;
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}
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if( nullptr == m_getVersion )
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{
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m_error = "[BUG] GetKicadPluginName is not linked";
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wxLogTrace( tracePluginLoader, wxT( "%s:%s:%d\n"
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"%s" ),
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__FILE__, __FUNCTION__, __LINE__, m_error );;
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return false;
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}
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m_getVersion( Major, Minor, Patch, Revision );
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return true;
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}
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void KICAD_PLUGIN_LDR::GetPluginInfo( std::string& aPluginInfo )
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{
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aPluginInfo = m_pluginInfo;
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}
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