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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "precompiled_cppuhelper.hxx"
#include "sal/config.h"
#include <stdlib.h>
#include <string.h>
#if defined WNT
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
/*
* Gets the installation path from the Windows Registry for the specified
* registry key.
*
* @param hroot open handle to predefined root registry key
* @param subKeyName name of the subkey to open
*
* @return the installation path or NULL, if no installation was found or
* if an error occurred
*/
static char* getPathFromRegistryKey( HKEY hroot, const char* subKeyName )
{
HKEY hkey;
DWORD type;
char* data = NULL;
DWORD size;
/* open the specified registry key */
if ( RegOpenKeyEx( hroot, subKeyName, 0, KEY_READ, &hkey ) != ERROR_SUCCESS )
{
return NULL;
}
/* find the type and size of the default value */
if ( RegQueryValueEx( hkey, NULL, NULL, &type, NULL, &size) != ERROR_SUCCESS )
{
RegCloseKey( hkey );
return NULL;
}
/* get memory to hold the default value */
data = (char*) malloc( size );
/* read the default value */
if ( RegQueryValueEx( hkey, NULL, NULL, &type, (LPBYTE) data, &size ) != ERROR_SUCCESS )
{
RegCloseKey( hkey );
return NULL;
}
/* release registry key handle */
RegCloseKey( hkey );
return data;
}
/*
* Gets the installation path from the Windows Registry.
*
* @return the installation path or NULL, if no installation was found or
* if an error occurred
*/
static char* platformSpecific()
{
const char* SUBKEYNAME = "Software\\LibreOffice\\UNO\\InstallPath";
char* path = NULL;
/* read the key's default value from HKEY_CURRENT_USER */
path = getPathFromRegistryKey( HKEY_CURRENT_USER, SUBKEYNAME );
if ( path == NULL )
{
/* read the key's default value from HKEY_LOCAL_MACHINE */
path = getPathFromRegistryKey( HKEY_LOCAL_MACHINE, SUBKEYNAME );
}
return path;
}
#else
#include <unistd.h>
#include <limits.h>
/*
* Gets the installation path from the PATH environment variable.
*
* <p>An installation is found, if the executable 'soffice' or a symbolic link
* is in one of the directories listed in the PATH environment variable.</p>
*
* @return the installation path or NULL, if no installation was found or
* if an error occurred
*/
static char* platformSpecific()
{
const int SEPARATOR = '/';
const char* PATHSEPARATOR = ":";
const char* PATHVARNAME = "PATH";
const char* APPENDIX = "/libreoffice";
char* path = NULL;
char* env = NULL;
char* str = NULL;
char* dir = NULL;
char* file = NULL;
char* resolved = NULL;
char* sep = NULL;
char buffer[PATH_MAX];
int pos;
/* get the value of the PATH environment variable */
env = getenv( PATHVARNAME );
str = (char*) malloc( strlen( env ) + 1 );
strcpy( str, env );
/* get the tokens separated by ':' */
dir = strtok( str, PATHSEPARATOR );
while ( dir )
{
/* construct soffice file path */
file = (char*) malloc( strlen( dir ) + strlen( APPENDIX ) + 1 );
strcpy( file, dir );
strcat( file, APPENDIX );
/* check existence of soffice file */
if ( !access( file, F_OK ) )
{
/* resolve symbolic link */
resolved = realpath( file, buffer );
if ( resolved != NULL )
{
/* get path to program directory */
sep = strrchr( resolved, SEPARATOR );
if ( sep != NULL )
{
pos = sep - resolved;
path = (char*) malloc( pos + 1 );
strncpy( path, resolved, pos );
path[ pos ] = '\0';
free( file );
break;
}
}
}
dir = strtok( NULL, PATHSEPARATOR );
free( file );
}
free( str );
return path;
}
#endif
char const* cppuhelper_detail_findSofficePath()
{
const char* UNOPATHVARNAME = "UNO_PATH";
char* path = NULL;
/* get the installation path from the UNO_PATH environment variable */
path = getenv( UNOPATHVARNAME );
if (!path || !path[0])
path = platformSpecific();
return path;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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