/************************************************************** * * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * *************************************************************/ #include #include #include #include #if defined _MSC_VER #pragma warning(push, 1) #endif #include #if defined _MSC_VER #pragma warning(pop) #endif #include "cppuhelper/findsofficepath.h" #include "sal/types.h" #define MY_LENGTH(s) (sizeof (s) / sizeof *(s) - 1) char const* getPath(); char* createCommandLine( char* lpCmdLine ); FILE* getErrorFile( int create ); void writeError( const char* errstr ); void closeErrorFile(); /* * The main function implements a loader for applications which use UNO. * *

This code runs on the Windows platform only.

* *

The main function detects a UNO installation on the system and adds the * program directory of the UNO installation to the PATH environment variable. * After that, the application process is loaded and started, whereby the * new process inherits the environment of the calling process, including * the modified PATH environment variable. The application's executable name * must be the same as the name of this executable, prefixed by '_'.

* *

A UNO installation can be specified by the user by setting the UNO_PATH * environment variable to the program directory of the UNO installation. * If no installation is specified by the user, the default installation on * the system will be taken. The default installation is read from the * default value of the key "Software\OpenOffice\UNO\InstallPath" from the * root key HKEY_CURRENT_USER in the Windows Registry. If this key is missing, * the key is read from the root key HKEY_LOCAL_MACHINE.

*/ int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow ) { const char* ENVVARNAME = "PATH"; const char* PATHSEPARATOR = ";"; char const* path = NULL; char* value = NULL; char* envstr = NULL; char* cmdline = NULL; int size; STARTUPINFO startup_info; PROCESS_INFORMATION process_info; BOOL bCreate; (void) hInstance; /* unused */ (void) hPrevInstance; /* unused */ (void) nCmdShow; /* unused */ /* get the path of the UNO installation */ path = getPath(); if ( path != NULL ) { /* The former code to call unoinfo first is removed because we can use the office path from the registry or from the UNO_PATH variable directly. Further cleanup can remove unoinfo from the installation when all places where it is used are checked. */ /* get the value of the PATH environment variable */ value = getenv( ENVVARNAME ); /* * add the UNO installation path to the PATH environment variable; * note that this only affects the environment variable of the current * process, the command processor's environment is not changed */ size = strlen( ENVVARNAME ) + strlen( "=" ) + strlen( path ) + 1; if ( value != NULL ) size += strlen( PATHSEPARATOR ) + strlen( value ); envstr = (char*) malloc( size ); strcpy( envstr, ENVVARNAME ); strcat( envstr, "=" ); strcat( envstr, path ); if ( value != NULL ) { strcat( envstr, PATHSEPARATOR ); strcat( envstr, value ); } _putenv( envstr ); free( envstr ); } else { writeError( "Warning: no UNO installation found!\n" ); } /* create the command line for the application process */ cmdline = createCommandLine( lpCmdLine ); if ( cmdline == NULL ) { writeError( "Error: cannot create command line!\n" ); closeErrorFile(); return 1; } /* create the application process */ memset( &startup_info, 0, sizeof( STARTUPINFO ) ); startup_info.cb = sizeof( STARTUPINFO ); bCreate = CreateProcess( NULL, cmdline, NULL, NULL, FALSE, 0, NULL, NULL, &startup_info, &process_info ); free( cmdline ); if ( !bCreate ) { writeError( "Error: cannot create process!\n" ); closeErrorFile(); return 1; } /* close the error file */ closeErrorFile(); return 0; } /* * Gets the path of a UNO installation. * * @return the installation path or NULL, if no installation was specified or * found, or if an error occurred */ char const* getPath() { char const* path = cppuhelper_detail_findSofficePath(); if ( path == NULL ) writeError( "Warning: getting path from Windows Registry failed!\n" ); return path; } /* * Creates the command line for the application process including the absolute * path of the executable. * *

The application's executable file name is the name of this executable * prefixed by '_'.

* * @param appendix specifies the command line for the application excluding * the executable name * * @return the command line for the application process or NULL, if an error * occurred */ char* createCommandLine( char* appendix ) { const char* CMDPREFIX = "_"; const char* DQUOTE = "\""; const char* SPACE = " "; char* cmdline = NULL; char cmdname[ _MAX_PATH ]; char drive[ _MAX_DRIVE ]; char dir[ _MAX_PATH ]; char base[ _MAX_FNAME ]; char newbase[ _MAX_FNAME ]; char ext[ _MAX_EXT ]; /* get the absolute path of the executable file */ if ( GetModuleFileName( NULL, cmdname, sizeof( cmdname ) ) ) { /* prefix the executable file name by '_' */ _splitpath( cmdname, drive, dir, base, ext ); strcpy( newbase, CMDPREFIX ); strcat( newbase, base ); _makepath( cmdname, drive, dir, newbase, ext ); /* create the command line */ cmdline = (char*) malloc( strlen( DQUOTE ) + strlen( cmdname ) + strlen ( DQUOTE ) + strlen( SPACE ) + strlen( appendix ) + 1 ); strcpy( cmdline, DQUOTE ); strcat( cmdline, cmdname ); strcat( cmdline, DQUOTE ); strcat( cmdline, SPACE ); strcat( cmdline, appendix ); } return cmdline; } /* * Gets the pointer to the error file. * *

The error file will only be created, if create != 0.

* *

The error file has the name -error.log and is * created in the same directory as the executable file. If this fails, * the error file is created in the directory designated for temporary files. *

* @param create specifies, if the error file should be created (create != 0) * * @return the pointer to the open error file or NULL, if no error file is * open or can be created */ FILE* getErrorFile( int create ) { const char* MODE = "w"; const char* BASEPOSTFIX = "-error"; const char* EXTENSION = ".log"; static FILE* ferr = NULL; char fname[ _MAX_PATH ]; char drive[ _MAX_DRIVE ]; char dir[ _MAX_PATH ]; char base[ _MAX_FNAME ]; char newbase[ _MAX_FNAME ]; char ext[ _MAX_EXT ]; if ( ferr == NULL && create ) { /* get the absolute path of the executable file */ if ( GetModuleFileName( NULL, fname, sizeof( fname ) ) ) { /* create error file in the directory of the executable file */ _splitpath( fname, drive, dir, base, ext ); strcpy( newbase, base ); strcat( newbase, BASEPOSTFIX ); _makepath( fname, drive, dir, newbase, EXTENSION ); ferr = fopen( fname, MODE ); if ( ferr == NULL ) { /* create error file in the temp directory */ GetTempPath( sizeof( fname ), fname ); strcat( fname, newbase ); strcat( fname, EXTENSION ); ferr = fopen( fname, MODE ); } } } return ferr; } /* * Writes an error message to the error file. * * @param errstr specifies the error message */ void writeError( const char* errstr ) { FILE* ferr = getErrorFile( 1 ); if ( ferr != NULL ) { fprintf( ferr, errstr ); fflush( ferr ); } } /* * Closes the error file. */ void closeErrorFile() { FILE* ferr = getErrorFile( 0 ); if ( ferr != NULL ) fclose( ferr ); }