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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#include "sal/config.h"
#include <com/sun/star/ucb/UniversalContentBroker.hpp>
#include <comphelper/processfactory.hxx>
#include <unotools/tempfile.hxx>
#include <unotools/localfilehelper.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <ucbhelper/fileidentifierconverter.hxx>
#include <rtl/ustring.hxx>
#include <rtl/instance.hxx>
#include <osl/file.hxx>
#include <tools/time.hxx>
#include <tools/debug.hxx>
#include <stdio.h>
#ifdef UNX
#include <sys/stat.h>
#endif
using namespace osl;
namespace
{
struct TempNameBase_Impl
: public rtl::Static< OUString, TempNameBase_Impl > {};
}
namespace utl
{
struct TempFile_Impl
{
OUString aName;
OUString aURL;
SvStream* pStream;
bool bIsDirectory;
TempFile_Impl()
: pStream(0)
{}
};
OUString getParentName( const OUString& aFileName )
{
sal_Int32 lastIndex = aFileName.lastIndexOf( sal_Unicode('/') );
OUString aParent = aFileName.copy( 0, lastIndex );
if( aParent[ aParent.getLength()-1] == sal_Unicode(':') && aParent.getLength() == 6 )
aParent += OUString("/");
if( 0 == aParent.compareToAscii( "file://" ) )
aParent = OUString("file:///");
return aParent;
}
bool ensuredir( const OUString& rUnqPath )
{
OUString aPath;
if ( rUnqPath.isEmpty() )
return false;
// remove trailing slash
if ( rUnqPath[ rUnqPath.getLength() - 1 ] == sal_Unicode( '/' ) )
aPath = rUnqPath.copy( 0, rUnqPath.getLength() - 1 );
else
aPath = rUnqPath;
// HACK: create directory on a mount point with nobrowse option
// returns ENOSYS in any case !!
osl::Directory aDirectory( aPath );
#ifdef UNX
/* RW permission for the user only! */
mode_t old_mode = umask(077);
#endif
osl::FileBase::RC nError = aDirectory.open();
#ifdef UNX
umask(old_mode);
#endif
aDirectory.close();
if( nError == osl::File::E_None )
return true;
// try to create the directory
nError = osl::Directory::create( aPath );
bool bSuccess = ( nError == osl::File::E_None || nError == osl::FileBase::E_EXIST );
if( !bSuccess )
{
// perhaps parent(s) don't exist
OUString aParentDir = getParentName( aPath );
if ( aParentDir != aPath )
{
bSuccess = ensuredir( getParentName( aPath ) );
// After parent directory structure exists try it one's more
if ( bSuccess )
{
// Parent directory exists, retry creation of directory
nError = osl::Directory::create( aPath );
bSuccess =( nError == osl::File::E_None || nError == osl::FileBase::E_EXIST );
}
}
}
return bSuccess;
}
OUString ConstructTempDir_Impl( const OUString* pParent )
{
OUString aName;
if ( pParent && !pParent->isEmpty() )
{
com::sun::star::uno::Reference<
com::sun::star::ucb::XUniversalContentBroker > pBroker(
com::sun::star::ucb::UniversalContentBroker::create(
comphelper::getProcessComponentContext() ) );
// if parent given try to use it
OUString aTmp( *pParent );
// test for valid filename
OUString aRet;
::osl::FileBase::getFileURLFromSystemPath(
::ucbhelper::getSystemPathFromFileURL( pBroker, aTmp ),
aRet );
if ( !aRet.isEmpty() )
{
::osl::DirectoryItem aItem;
sal_Int32 i = aRet.getLength();
if ( aRet[i-1] == '/' )
i--;
if ( DirectoryItem::get( aRet.copy(0, i), aItem ) == FileBase::E_None )
aName = aRet;
}
}
if ( aName.isEmpty() )
{
OUString &rTempNameBase_Impl = TempNameBase_Impl::get();
if (rTempNameBase_Impl.isEmpty())
{
OUString ustrTempDirURL;
::osl::FileBase::RC rc = ::osl::File::getTempDirURL(
ustrTempDirURL );
if (rc == ::osl::FileBase::E_None)
rTempNameBase_Impl = ustrTempDirURL;
}
// if no parent or invalid parent : use default directory
DBG_ASSERT( !rTempNameBase_Impl.isEmpty(), "No TempDir!" );
aName = rTempNameBase_Impl;
ensuredir( aName );
}
// Make sure that directory ends with a separator
sal_Int32 i = aName.getLength();
if( i>0 && aName[i-1] != '/' )
aName += "/";
return aName;
}
void CreateTempName_Impl( OUString& rName, bool bKeep, bool bDir = true )
{
// add a suitable tempname
// 36 ** 6 == 2176782336
unsigned const nRadix = 36;
unsigned long const nMax = (nRadix*nRadix*nRadix*nRadix*nRadix*nRadix);
OUString aName = rName + "lu";
rName = "";
static unsigned long u = Time::GetSystemTicks() % nMax;
for ( unsigned long nSeed = u; ++u != nSeed; )
{
u %= nMax;
OUString aTmp( aName );
aTmp += OUString::valueOf(static_cast<sal_Int64>(u), nRadix);
aTmp += ".tmp" ;
if ( bDir )
{
#ifdef UNX /* RW permission for the user only! */
mode_t old_mode = umask(077);
#endif
FileBase::RC err = Directory::create( aTmp );
#ifdef UNX
umask(old_mode);
#endif
if ( err == FileBase::E_None )
{
// !bKeep: only for creating a name, not a file or directory
if ( bKeep || Directory::remove( aTmp ) == FileBase::E_None )
rName = aTmp;
break;
}
else if ( err != FileBase::E_EXIST )
{
// if f.e. name contains invalid chars stop trying to create dirs
break;
}
}
else
{
DBG_ASSERT( bKeep, "Too expensive, use directory for creating name!" );
File aFile( aTmp );
#ifdef UNX /* RW permission for the user only! */
mode_t old_mode = umask(077);
#endif
FileBase::RC err = aFile.open( osl_File_OpenFlag_Create | osl_File_OpenFlag_NoLock );
#ifdef UNX
umask(old_mode);
#endif
if ( err == FileBase::E_None )
{
rName = aTmp;
aFile.close();
break;
}
else if ( err != FileBase::E_EXIST )
{
// if f.e. name contains invalid chars stop trying to create files
// but if there is a folder with such name proceed further
DirectoryItem aTmpItem;
FileStatus aTmpStatus( osl_FileStatus_Mask_Type );
if ( DirectoryItem::get( aTmp, aTmpItem ) != FileBase::E_None
|| aTmpItem.getFileStatus( aTmpStatus ) != FileBase::E_None
|| aTmpStatus.getFileType() != FileStatus::Directory )
break;
}
}
}
}
void lcl_createName(TempFile_Impl& _rImpl,const OUString& rLeadingChars, bool _bStartWithZero,
const OUString* pExtension, const OUString* pParent, bool bDirectory)
{
_rImpl.bIsDirectory = bDirectory;
// get correct directory
OUString aName = ConstructTempDir_Impl( pParent );
bool bUseNumber = _bStartWithZero;
// now use special naming scheme ( name takes leading chars and an index counting up from zero
aName += rLeadingChars;
for ( sal_Int32 i=0;; i++ )
{
OUString aTmp( aName );
if ( bUseNumber )
aTmp += OUString::number( i );
bUseNumber = true;
if ( pExtension )
aTmp += *pExtension;
else
aTmp += ".tmp" ;
if ( bDirectory )
{
FileBase::RC err = Directory::create( aTmp );
if ( err == FileBase::E_None )
{
_rImpl.aName = aTmp;
break;
}
else if ( err != FileBase::E_EXIST )
// if f.e. name contains invalid chars stop trying to create dirs
break;
}
else
{
File aFile( aTmp );
#ifdef UNX
/* RW permission for the user only! */
mode_t old_mode = umask(077);
#endif
FileBase::RC err = aFile.open(osl_File_OpenFlag_Create);
#ifdef UNX
umask(old_mode);
#endif
if ( err == FileBase::E_None || err == FileBase::E_NOLCK )
{
_rImpl.aName = aTmp;
aFile.close();
break;
}
else if ( err != FileBase::E_EXIST )
{
// if f.e. name contains invalid chars stop trying to create dirs
// but if there is a folder with such name proceed further
DirectoryItem aTmpItem;
FileStatus aTmpStatus( osl_FileStatus_Mask_Type );
if ( DirectoryItem::get( aTmp, aTmpItem ) != FileBase::E_None
|| aTmpItem.getFileStatus( aTmpStatus ) != FileBase::E_None
|| aTmpStatus.getFileType() != FileStatus::Directory )
break;
}
}
if ( !_bStartWithZero )
aTmp += OUString::number( i );
}
}
OUString TempFile::CreateTempName( const OUString* pParent )
{
// get correct directory
OUString aName = ConstructTempDir_Impl( pParent );
// get TempFile name with default naming scheme
CreateTempName_Impl( aName, false );
// convert to file URL
OUString aTmp;
if ( !aName.isEmpty() )
FileBase::getSystemPathFromFileURL( aName, aTmp );
return aTmp;
}
TempFile::TempFile( const OUString* pParent, bool bDirectory )
: pImp( new TempFile_Impl )
, bKillingFileEnabled( false )
{
pImp->bIsDirectory = bDirectory;
// get correct directory
pImp->aName = ConstructTempDir_Impl( pParent );
// get TempFile with default naming scheme
CreateTempName_Impl( pImp->aName, true, bDirectory );
}
TempFile::TempFile( const OUString& rLeadingChars, const OUString* pExtension, const OUString* pParent, bool bDirectory)
: pImp( new TempFile_Impl )
, bKillingFileEnabled( false )
{
lcl_createName(*pImp, rLeadingChars, true, pExtension, pParent, bDirectory);
}
TempFile::TempFile( const OUString& rLeadingChars, bool _bStartWithZero, const OUString* pExtension, const OUString* pParent, bool bDirectory)
: pImp( new TempFile_Impl )
, bKillingFileEnabled( false )
{
lcl_createName(*pImp, rLeadingChars, _bStartWithZero, pExtension, pParent, bDirectory);
}
TempFile::~TempFile()
{
delete pImp->pStream;
if ( bKillingFileEnabled )
{
if ( pImp->bIsDirectory )
{
// at the moment no recursiv algorithm present
Directory::remove( pImp->aName );
}
else
{
File::remove( pImp->aName );
}
}
delete pImp;
}
bool TempFile::IsValid() const
{
return !(pImp->aName.isEmpty());
}
OUString TempFile::GetFileName() const
{
OUString aTmp;
FileBase::getSystemPathFromFileURL( pImp->aName, aTmp );
return aTmp;
}
OUString TempFile::GetURL() const
{
if ( pImp->aURL.isEmpty() )
{
OUString aTmp;
LocalFileHelper::ConvertPhysicalNameToURL( GetFileName(), aTmp );
pImp->aURL = aTmp;
}
return pImp->aURL;
}
SvStream* TempFile::GetStream( StreamMode eMode )
{
if ( !pImp->pStream )
{
if ( !GetURL().isEmpty() )
pImp->pStream = UcbStreamHelper::CreateStream( pImp->aURL, eMode, true /* bFileExists */ );
else
pImp->pStream = new SvMemoryStream( eMode );
}
return pImp->pStream;
}
void TempFile::CloseStream()
{
if ( pImp->pStream )
{
delete pImp->pStream;
pImp->pStream = NULL;
}
}
OUString TempFile::SetTempNameBaseDirectory( const OUString &rBaseName )
{
if( rBaseName.isEmpty() )
return OUString();
OUString aUnqPath( rBaseName );
// remove trailing slash
if ( rBaseName[ rBaseName.getLength() - 1 ] == sal_Unicode( '/' ) )
aUnqPath = rBaseName.copy( 0, rBaseName.getLength() - 1 );
// try to create the directory
bool bRet = false;
osl::FileBase::RC err = osl::Directory::create( aUnqPath );
if ( err != FileBase::E_None && err != FileBase::E_EXIST )
// perhaps parent(s) don't exist
bRet = ensuredir( aUnqPath );
else
bRet = true;
// failure to create base directory means returning an empty string
OUString aTmp;
if ( bRet )
{
// append own internal directory
bRet = true;
OUString &rTempNameBase_Impl = TempNameBase_Impl::get();
rTempNameBase_Impl = rBaseName;
rTempNameBase_Impl += OUString('/');
TempFile aBase( NULL, true );
if ( aBase.IsValid() )
// use it in case of success
rTempNameBase_Impl = aBase.pImp->aName;
// return system path of used directory
FileBase::getSystemPathFromFileURL( rTempNameBase_Impl, aTmp );
}
return aTmp;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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