9f16c2bf8e
* *
* update copyright headers with new FSF postal address
* COPYING.txt -> LICENSE.txt (rest of repo to be synced)
401 lines
12 KiB
C
401 lines
12 KiB
C
/*
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* hb_fsLink*(), hb_FLink*() functions
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*
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* Copyright 2010 Viktor Szakats (vszakats.net/harbour)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* 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; see the file LICENSE.txt. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA (or visit https://www.gnu.org/licenses/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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#include "hbapi.h"
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#include "hbapifs.h"
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#include "hbvm.h"
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#if defined( HB_OS_WIN ) && ! defined( HB_OS_WIN_CE )
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#include <windows.h>
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#if ! defined( INVALID_FILE_ATTRIBUTES )
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#define INVALID_FILE_ATTRIBUTES ( ( DWORD ) -1 )
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#endif
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#include "hbwinuni.h"
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#elif defined( HB_OS_UNIX )
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#include <unistd.h>
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#endif
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HB_BOOL hb_fsLink( const char * pszExisting, const char * pszNewFile )
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{
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HB_BOOL fResult;
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if( pszExisting && pszNewFile )
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{
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hb_vmUnlock();
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#if defined( HB_OS_WIN ) && ! defined( HB_OS_WIN_CE )
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{
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typedef BOOL ( WINAPI * _HB_CREATEHARDLINK )( LPCTSTR, LPCTSTR, LPSECURITY_ATTRIBUTES );
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static _HB_CREATEHARDLINK s_pCreateHardLink = NULL;
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if( ! s_pCreateHardLink )
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{
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HMODULE hModule = GetModuleHandle( TEXT( "kernel32.dll" ) );
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if( hModule )
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s_pCreateHardLink = ( _HB_CREATEHARDLINK )
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HB_WINAPI_GETPROCADDRESST( hModule, "CreateHardLink" );
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}
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if( s_pCreateHardLink )
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{
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LPCTSTR lpFileName, lpExistingFileName;
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LPTSTR lpFileNameFree, lpExistingFileNameFree;
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lpFileName = HB_FSNAMECONV( pszNewFile, &lpFileNameFree );
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lpExistingFileName = HB_FSNAMECONV( pszExisting, &lpExistingFileNameFree );
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fResult = s_pCreateHardLink( lpFileName, lpExistingFileName, NULL ) != 0;
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hb_fsSetIOError( fResult, 0 );
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if( lpFileNameFree )
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hb_xfree( lpFileNameFree );
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if( lpExistingFileNameFree )
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hb_xfree( lpExistingFileNameFree );
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}
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else
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{
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hb_fsSetError( 1 );
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fResult = HB_FALSE;
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}
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}
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#elif defined( HB_OS_UNIX )
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{
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char * pszExistingFree;
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char * pszNewFileFree;
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pszExisting = hb_fsNameConv( pszExisting, &pszExistingFree );
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pszNewFile = hb_fsNameConv( pszNewFile, &pszNewFileFree );
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fResult = ( link( pszExisting, pszNewFile ) == 0 );
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hb_fsSetIOError( fResult, 0 );
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if( pszExistingFree )
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hb_xfree( pszExistingFree );
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if( pszNewFileFree )
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hb_xfree( pszNewFileFree );
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}
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#else
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{
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hb_fsSetError( 1 );
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fResult = HB_FALSE;
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}
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#endif
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hb_vmLock();
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}
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else
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{
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hb_fsSetError( 2 );
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fResult = HB_FALSE;
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}
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return fResult;
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}
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HB_BOOL hb_fsLinkSym( const char * pszTarget, const char * pszNewFile )
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{
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HB_BOOL fResult;
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if( pszTarget && pszNewFile )
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{
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hb_vmUnlock();
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#if defined( HB_OS_WIN ) && ! defined( HB_OS_WIN_CE )
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{
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typedef BOOL ( WINAPI * _HB_CREATESYMBOLICLINK )( LPCTSTR, LPCTSTR, DWORD );
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static _HB_CREATESYMBOLICLINK s_pCreateSymbolicLink = NULL;
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#ifndef SYMBOLIC_LINK_FLAG_DIRECTORY
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#define SYMBOLIC_LINK_FLAG_DIRECTORY 0x1
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#endif
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if( ! s_pCreateSymbolicLink )
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{
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HMODULE hModule = GetModuleHandle( TEXT( "kernel32.dll" ) );
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if( hModule )
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s_pCreateSymbolicLink = ( _HB_CREATESYMBOLICLINK )
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HB_WINAPI_GETPROCADDRESST( hModule, "CreateSymbolicLink" );
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}
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if( s_pCreateSymbolicLink )
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{
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LPCTSTR lpSymlinkFileName, lpTargetFileName;
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LPTSTR lpSymlinkFileNameFree, lpTargetFileNameFree;
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DWORD dwAttr;
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HB_BOOL fDir;
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lpSymlinkFileName = HB_FSNAMECONV( pszNewFile, &lpSymlinkFileNameFree );
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lpTargetFileName = HB_FSNAMECONV( pszTarget, &lpTargetFileNameFree );
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dwAttr = GetFileAttributes( lpTargetFileName );
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fDir = ( dwAttr != INVALID_FILE_ATTRIBUTES ) &&
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( dwAttr & FILE_ATTRIBUTE_DIRECTORY );
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fResult = s_pCreateSymbolicLink( lpSymlinkFileName, lpTargetFileName, fDir ? SYMBOLIC_LINK_FLAG_DIRECTORY : 0 ) != 0;
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hb_fsSetIOError( fResult, 0 );
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if( lpSymlinkFileNameFree )
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hb_xfree( lpSymlinkFileNameFree );
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if( lpTargetFileNameFree )
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hb_xfree( lpTargetFileNameFree );
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}
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else
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{
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hb_fsSetError( 1 );
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fResult = HB_FALSE;
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}
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}
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#elif defined( HB_OS_UNIX )
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{
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char * pszTargetFree;
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char * pszNewFileFree;
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pszTarget = hb_fsNameConv( pszTarget, &pszTargetFree );
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pszNewFile = hb_fsNameConv( pszNewFile, &pszNewFileFree );
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fResult = ( symlink( pszTarget, pszNewFile ) == 0 );
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hb_fsSetIOError( fResult, 0 );
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if( pszTargetFree )
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hb_xfree( pszTargetFree );
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if( pszNewFileFree )
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hb_xfree( pszNewFileFree );
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}
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#else
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{
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hb_fsSetError( 1 );
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fResult = HB_FALSE;
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}
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#endif
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hb_vmLock();
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}
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else
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{
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hb_fsSetError( 2 );
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fResult = HB_FALSE;
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}
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return fResult;
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}
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/* NOTE: Caller must free the pointer, if not NULL */
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char * hb_fsLinkRead( const char * pszFile )
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{
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char * pszLink = NULL;
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if( pszFile )
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{
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hb_vmUnlock();
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#if defined( HB_OS_WIN ) && ! defined( HB_OS_WIN_CE )
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{
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typedef DWORD ( WINAPI * _HB_GETFINALPATHNAMEBYHANDLE )( HANDLE, LPTSTR, DWORD, DWORD );
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static _HB_GETFINALPATHNAMEBYHANDLE s_pGetFinalPathNameByHandle = NULL;
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#ifndef VOLUME_NAME_DOS
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#define VOLUME_NAME_DOS 0x0
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#endif
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#ifndef VOLUME_NAME_GUID
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#define VOLUME_NAME_GUID 0x1
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#endif
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#ifndef VOLUME_NAME_NT
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#define VOLUME_NAME_NT 0x2
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#endif
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#ifndef VOLUME_NAME_NONE
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#define VOLUME_NAME_NONE 0x4
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#endif
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#ifndef FILE_NAME_NORMALIZED
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#define FILE_NAME_NORMALIZED 0x0
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#endif
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#ifndef FILE_NAME_OPENED
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#define FILE_NAME_OPENED 0x8
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#endif
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if( ! s_pGetFinalPathNameByHandle )
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{
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HMODULE hModule = GetModuleHandle( TEXT( "kernel32.dll" ) );
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if( hModule )
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s_pGetFinalPathNameByHandle = ( _HB_GETFINALPATHNAMEBYHANDLE )
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HB_WINAPI_GETPROCADDRESST( hModule, "GetFinalPathNameByHandle" );
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}
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if( s_pGetFinalPathNameByHandle )
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{
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LPCTSTR lpFileName;
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LPTSTR lpFileNameFree;
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HANDLE hFile;
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DWORD dwAttr;
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HB_BOOL fDir;
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lpFileName = HB_FSNAMECONV( pszFile, &lpFileNameFree );
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dwAttr = GetFileAttributes( lpFileName );
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fDir = ( dwAttr != INVALID_FILE_ATTRIBUTES ) &&
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( dwAttr & FILE_ATTRIBUTE_DIRECTORY );
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hFile = CreateFile( lpFileName,
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GENERIC_READ,
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FILE_SHARE_READ,
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NULL,
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OPEN_EXISTING,
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fDir ? ( FILE_ATTRIBUTE_DIRECTORY | FILE_FLAG_BACKUP_SEMANTICS ) : FILE_ATTRIBUTE_NORMAL,
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NULL );
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if( hFile == INVALID_HANDLE_VALUE )
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hb_fsSetIOError( HB_FALSE, 0 );
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else
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{
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DWORD size;
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TCHAR lpLink[ HB_PATH_MAX ];
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size = s_pGetFinalPathNameByHandle( hFile, lpLink, HB_PATH_MAX, VOLUME_NAME_DOS );
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if( size < HB_PATH_MAX )
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{
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if( size > 0 )
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{
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lpLink[ size ] = TEXT( '\0' );
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pszLink = HB_OSSTRDUP( lpLink );
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}
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hb_fsSetIOError( HB_TRUE, 0 );
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}
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else
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hb_fsSetError( 9 );
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}
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if( lpFileNameFree )
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hb_xfree( lpFileNameFree );
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}
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else
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hb_fsSetError( 1 );
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}
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#elif defined( HB_OS_UNIX )
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{
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char * pszFileFree;
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size_t size;
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pszFile = hb_fsNameConv( pszFile, &pszFileFree );
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pszLink = ( char * ) hb_xgrab( HB_PATH_MAX + 1 );
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size = readlink( pszFile, pszLink, HB_PATH_MAX );
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hb_fsSetIOError( size != ( size_t ) -1, 0 );
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if( size == ( size_t ) -1 )
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{
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hb_xfree( pszLink );
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pszLink = NULL;
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}
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else
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{
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pszLink[ size ] = '\0';
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/* Convert from OS codepage */
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pszLink = ( char * ) HB_UNCONST( hb_osDecodeCP( pszLink, NULL, NULL ) );
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}
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if( pszFileFree )
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hb_xfree( pszFileFree );
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}
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#else
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{
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hb_fsSetError( 1 );
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}
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#endif
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hb_vmLock();
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}
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else
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hb_fsSetError( 2 );
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return pszLink;
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}
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HB_FUNC( HB_FLINK )
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{
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HB_ERRCODE uiError = 2;
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HB_BOOL fResult = HB_FALSE;
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const char * pszExisting = hb_parc( 1 ), * pszNewFile = hb_parc( 2 );
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if( pszExisting && pszNewFile )
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{
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fResult = hb_fsLink( pszExisting, pszNewFile );
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uiError = hb_fsError();
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}
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hb_retni( fResult ? 0 : F_ERROR );
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hb_fsSetFError( uiError );
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}
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HB_FUNC( HB_FLINKSYM )
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{
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HB_ERRCODE uiError = 2;
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HB_BOOL fResult = HB_FALSE;
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const char * pszTarget = hb_parc( 1 ), * pszNewFile = hb_parc( 2 );
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if( pszTarget && pszNewFile )
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{
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fResult = hb_fsLinkSym( pszTarget, pszNewFile );
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uiError = hb_fsError();
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}
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hb_retni( fResult ? 0 : F_ERROR );
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hb_fsSetFError( uiError );
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}
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HB_FUNC( HB_FLINKREAD )
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{
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HB_ERRCODE uiError = 2;
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char * pszResult = NULL;
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const char * pszFile = hb_parc( 1 );
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if( pszFile )
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{
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pszResult = hb_fsLinkRead( pszFile );
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uiError = hb_fsError();
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}
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hb_retc_buffer( pszResult );
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hb_fsSetFError( uiError );
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}
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