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https://github.com/reactos/wine.git
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353 lines
9.8 KiB
C
353 lines
9.8 KiB
C
/*
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* File handling functions
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*
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* Copyright 1993 Erik Bos
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* Copyright 1996 Alexandre Julliard
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* Copyright 2003 Eric Pouech
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <stdarg.h>
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#define NONAMELESSUNION
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#define NONAMELESSSTRUCT
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#include "winerror.h"
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#include "ntstatus.h"
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#include "windef.h"
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#include "winbase.h"
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#include "winreg.h"
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#include "winternl.h"
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#include "wine/unicode.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(file);
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#define MAX_PATHNAME_LEN 1024
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/***********************************************************************
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* GetLongPathNameW (KERNEL32.@)
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*
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* NOTES
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* observed (Win2000):
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* shortpath=NULL: LastError=ERROR_INVALID_PARAMETER, ret=0
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* shortpath="": LastError=ERROR_PATH_NOT_FOUND, ret=0
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*/
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DWORD WINAPI GetLongPathNameW( LPCWSTR shortpath, LPWSTR longpath, DWORD longlen )
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{
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WCHAR tmplongpath[MAX_PATHNAME_LEN];
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LPCWSTR p;
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DWORD sp = 0, lp = 0;
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DWORD tmplen;
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BOOL unixabsolute = (shortpath[0] == '/');
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WIN32_FIND_DATAW wfd;
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HANDLE goit;
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if (!shortpath)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return 0;
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}
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if (!shortpath[0])
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{
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SetLastError(ERROR_PATH_NOT_FOUND);
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return 0;
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}
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TRACE("%s,%p,%ld\n", debugstr_w(shortpath), longpath, longlen);
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if (shortpath[0] == '\\' && shortpath[1] == '\\')
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{
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ERR("UNC pathname %s\n", debugstr_w(shortpath));
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lstrcpynW( longpath, shortpath, longlen );
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return strlenW(longpath);
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}
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/* check for drive letter */
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if (!unixabsolute && shortpath[1] == ':' )
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{
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tmplongpath[0] = shortpath[0];
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tmplongpath[1] = ':';
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lp = sp = 2;
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}
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while (shortpath[sp])
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{
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/* check for path delimiters and reproduce them */
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if (shortpath[sp] == '\\' || shortpath[sp] == '/')
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{
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if (!lp || tmplongpath[lp-1] != '\\')
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{
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/* strip double "\\" */
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tmplongpath[lp++] = '\\';
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}
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tmplongpath[lp] = 0; /* terminate string */
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sp++;
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continue;
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}
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p = shortpath + sp;
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if (sp == 0 && p[0] == '.' && (p[1] == '/' || p[1] == '\\'))
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{
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tmplongpath[lp++] = *p++;
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tmplongpath[lp++] = *p++;
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}
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for (; *p && *p != '/' && *p != '\\'; p++);
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tmplen = p - (shortpath + sp);
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lstrcpynW(tmplongpath + lp, shortpath + sp, tmplen + 1);
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/* Check if the file exists and use the existing file name */
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goit = FindFirstFileW(tmplongpath, &wfd);
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if (goit == INVALID_HANDLE_VALUE)
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{
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TRACE("not found %s!\n", debugstr_w(tmplongpath));
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SetLastError ( ERROR_FILE_NOT_FOUND );
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return 0;
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}
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FindClose(goit);
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strcpyW(tmplongpath + lp, wfd.cFileName);
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lp += strlenW(tmplongpath + lp);
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sp += tmplen;
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}
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tmplen = strlenW(shortpath) - 1;
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if ((shortpath[tmplen] == '/' || shortpath[tmplen] == '\\') &&
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(tmplongpath[lp - 1] != '/' && tmplongpath[lp - 1] != '\\'))
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tmplongpath[lp++] = shortpath[tmplen];
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tmplongpath[lp] = 0;
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tmplen = strlenW(tmplongpath) + 1;
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if (tmplen <= longlen)
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{
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strcpyW(longpath, tmplongpath);
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TRACE("returning %s\n", debugstr_w(longpath));
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tmplen--; /* length without 0 */
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}
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return tmplen;
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}
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/***********************************************************************
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* GetLongPathNameA (KERNEL32.@)
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*/
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DWORD WINAPI GetLongPathNameA( LPCSTR shortpath, LPSTR longpath, DWORD longlen )
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{
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UNICODE_STRING shortpathW;
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WCHAR longpathW[MAX_PATH];
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DWORD ret, retW;
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if (!shortpath)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return 0;
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}
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TRACE("%s\n", debugstr_a(shortpath));
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if (!RtlCreateUnicodeStringFromAsciiz(&shortpathW, shortpath))
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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return 0;
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}
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retW = GetLongPathNameW(shortpathW.Buffer, longpathW, MAX_PATH);
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if (!retW)
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ret = 0;
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else if (retW > MAX_PATH)
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{
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SetLastError(ERROR_FILENAME_EXCED_RANGE);
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ret = 0;
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}
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else
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{
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ret = WideCharToMultiByte(CP_ACP, 0, longpathW, -1, NULL, 0, NULL, NULL);
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if (ret <= longlen)
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{
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WideCharToMultiByte(CP_ACP, 0, longpathW, -1, longpath, longlen, NULL, NULL);
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ret--; /* length without 0 */
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}
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}
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RtlFreeUnicodeString(&shortpathW);
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return ret;
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}
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/***********************************************************************
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* GetShortPathNameW (KERNEL32.@)
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*
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* NOTES
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* observed:
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* longpath=NULL: LastError=ERROR_INVALID_PARAMETER, ret=0
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* longpath="" or invalid: LastError=ERROR_BAD_PATHNAME, ret=0
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*
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* more observations ( with NT 3.51 (WinDD) ):
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* longpath <= 8.3 -> just copy longpath to shortpath
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* longpath > 8.3 ->
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* a) file does not exist -> return 0, LastError = ERROR_FILE_NOT_FOUND
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* b) file does exist -> set the short filename.
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* - trailing slashes are reproduced in the short name, even if the
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* file is not a directory
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* - the absolute/relative path of the short name is reproduced like found
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* in the long name
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* - longpath and shortpath may have the same address
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* Peter Ganten, 1999
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*/
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DWORD WINAPI GetShortPathNameW( LPCWSTR longpath, LPWSTR shortpath, DWORD shortlen )
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{
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WCHAR tmpshortpath[MAX_PATHNAME_LEN];
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LPCWSTR p;
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DWORD sp = 0, lp = 0;
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DWORD tmplen;
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BOOL unixabsolute = (longpath[0] == '/');
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WIN32_FIND_DATAW wfd;
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HANDLE goit;
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UNICODE_STRING ustr;
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WCHAR ustr_buf[8+1+3+1];
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TRACE("%s\n", debugstr_w(longpath));
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if (!longpath)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return 0;
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}
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if (!longpath[0])
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{
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SetLastError(ERROR_BAD_PATHNAME);
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return 0;
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}
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/* check for drive letter */
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if (!unixabsolute && longpath[1] == ':' )
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{
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tmpshortpath[0] = longpath[0];
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tmpshortpath[1] = ':';
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sp = lp = 2;
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}
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ustr.Buffer = ustr_buf;
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ustr.Length = 0;
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ustr.MaximumLength = sizeof(ustr_buf);
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while (longpath[lp])
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{
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/* check for path delimiters and reproduce them */
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if (longpath[lp] == '\\' || longpath[lp] == '/')
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{
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if (!sp || tmpshortpath[sp-1] != '\\')
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{
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/* strip double "\\" */
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tmpshortpath[sp] = '\\';
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sp++;
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}
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tmpshortpath[sp] = 0; /* terminate string */
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lp++;
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continue;
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}
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for (p = longpath + lp; *p && *p != '/' && *p != '\\'; p++);
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tmplen = p - (longpath + lp);
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lstrcpynW(tmpshortpath + sp, longpath + lp, tmplen + 1);
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if (tmplen <= 8+1+3+1)
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{
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memcpy(ustr_buf, longpath + lp, tmplen * sizeof(WCHAR));
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ustr_buf[tmplen] = '\0';
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ustr.Length = tmplen * sizeof(WCHAR);
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/* Check, if the current element is a valid dos name */
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if (!RtlIsNameLegalDOS8Dot3(&ustr, NULL, NULL))
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goto notfound;
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sp += tmplen;
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lp += tmplen;
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continue;
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}
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/* Check if the file exists and use the existing file name */
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goit = FindFirstFileW(tmpshortpath, &wfd);
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if (goit == INVALID_HANDLE_VALUE) goto notfound;
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FindClose(goit);
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strcpyW(tmpshortpath + sp, wfd.cAlternateFileName);
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sp += strlenW(tmpshortpath + sp);
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lp += tmplen;
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}
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tmpshortpath[sp] = 0;
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tmplen = strlenW(tmpshortpath) + 1;
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if (tmplen <= shortlen)
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{
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strcpyW(shortpath, tmpshortpath);
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TRACE("returning %s\n", debugstr_w(shortpath));
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tmplen--; /* length without 0 */
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}
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return tmplen;
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notfound:
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TRACE("not found!\n" );
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SetLastError ( ERROR_FILE_NOT_FOUND );
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return 0;
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}
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/***********************************************************************
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* GetShortPathNameA (KERNEL32.@)
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*/
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DWORD WINAPI GetShortPathNameA( LPCSTR longpath, LPSTR shortpath, DWORD shortlen )
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{
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UNICODE_STRING longpathW;
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WCHAR shortpathW[MAX_PATH];
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DWORD ret, retW;
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if (!longpath)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return 0;
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}
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TRACE("%s\n", debugstr_a(longpath));
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if (!RtlCreateUnicodeStringFromAsciiz(&longpathW, longpath))
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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return 0;
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}
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retW = GetShortPathNameW(longpathW.Buffer, shortpathW, MAX_PATH);
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if (!retW)
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ret = 0;
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else if (retW > MAX_PATH)
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{
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SetLastError(ERROR_FILENAME_EXCED_RANGE);
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ret = 0;
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}
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else
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{
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ret = WideCharToMultiByte(CP_ACP, 0, shortpathW, -1, NULL, 0, NULL, NULL);
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if (ret <= shortlen)
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{
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WideCharToMultiByte(CP_ACP, 0, shortpathW, -1, shortpath, shortlen, NULL, NULL);
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ret--; /* length without 0 */
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}
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}
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RtlFreeUnicodeString(&longpathW);
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return ret;
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}
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