/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: folderrestriction.cxx,v $
 * $Revision: 1.5 $
 *
 * 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.
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svtools.hxx"

#include "folderrestriction.hxx"
#include "osl/process.h"
#include "tools/urlobj.hxx"
#include "unotools/localfilehelper.hxx"

//-----------------------------------------------------------------------------

static void convertStringListToUrls (
	const String& _rColonSeparatedList, ::std::vector< String >& _rTokens, bool _bFinalSlash )
{
	const sal_Unicode s_cSeparator =
#if defined(WNT)
		';'
#else
		':'
#endif
            ;
	xub_StrLen nTokens = _rColonSeparatedList.GetTokenCount( s_cSeparator );
	_rTokens.resize( 0 ); _rTokens.reserve( nTokens );
	for ( xub_StrLen i=0; i<nTokens; ++i )
	{
		// the current token in the list
		String sCurrentToken = _rColonSeparatedList.GetToken( i, s_cSeparator );
		if ( !sCurrentToken.Len() )
			continue;

		INetURLObject aCurrentURL;

		String sURL;
		if ( ::utl::LocalFileHelper::ConvertPhysicalNameToURL( sCurrentToken, sURL ) )
			aCurrentURL = INetURLObject( sURL );
		else
		{
			// smart URL parsing, assuming FILE protocol
			aCurrentURL = INetURLObject( sCurrentToken, INET_PROT_FILE );
		}

		if ( _bFinalSlash )
			aCurrentURL.setFinalSlash( );
		else
			aCurrentURL.removeFinalSlash( );
		_rTokens.push_back( aCurrentURL.GetMainURL( INetURLObject::NO_DECODE ) );
	}
}

/** retrieves the value of an environment variable
	@return <TRUE/> if and only if the retrieved string value is not empty
*/
static bool getEnvironmentValue( const sal_Char* _pAsciiEnvName, ::rtl::OUString& _rValue )
{
	_rValue = ::rtl::OUString();
	::rtl::OUString sEnvName = ::rtl::OUString::createFromAscii( _pAsciiEnvName );
	osl_getEnvironment( sEnvName.pData, &_rValue.pData );
	return _rValue.getLength() != 0;
}

//-----------------------------------------------------------------------------

namespace svt
{

    void getUnrestrictedFolders( ::std::vector< String >& _rFolders )
    {
        _rFolders.resize( 0 );
        ::rtl::OUString sRestrictedPathList;
        if ( getEnvironmentValue( "RestrictedPath", sRestrictedPathList ) )
		{
            // append a final slash. This ensures that when we later on check
            // for unrestricted paths, we don't allow paths like "/home/user35" just because
            // "/home/user3" is allowed - with the final slash, we make it "/home/user3/".
            convertStringListToUrls( sRestrictedPathList, _rFolders, true );
		}
    }

} // namespace svt

