895 lines
28 KiB
C
895 lines
28 KiB
C
/*
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* Ntdll path functions
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*
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* Copyright 2002, 2003, 2004 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#include <sys/types.h>
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winioctl.h"
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#include "wine/debug.h"
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#include "ntdll_misc.h"
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WINE_DEFAULT_DEBUG_CHANNEL(file);
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static const WCHAR DeviceRootW[] = {'\\','\\','.','\\',0};
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static const WCHAR NTDosPrefixW[] = {'\\','?','?','\\',0};
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static const WCHAR UncPfxW[] = {'U','N','C','\\',0};
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#define IS_SEPARATOR(ch) ((ch) == '\\' || (ch) == '/')
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/***********************************************************************
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* RtlDetermineDosPathNameType_U (NTDLL.@)
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*/
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DOS_PATHNAME_TYPE WINAPI RtlDetermineDosPathNameType_U( PCWSTR path )
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{
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if (IS_SEPARATOR(path[0]))
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{
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if (!IS_SEPARATOR(path[1])) return ABSOLUTE_PATH; /* "/foo" */
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if (path[2] != '.' && path[2] != '?') return UNC_PATH; /* "//foo" */
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if (IS_SEPARATOR(path[3])) return DEVICE_PATH; /* "//./foo" or "//?/foo" */
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if (path[3]) return UNC_PATH; /* "//.foo" or "//?foo" */
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return UNC_DOT_PATH; /* "//." or "//?" */
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}
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else
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{
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if (!path[0] || path[1] != ':') return RELATIVE_PATH; /* "foo" */
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if (IS_SEPARATOR(path[2])) return ABSOLUTE_DRIVE_PATH; /* "c:/foo" */
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return RELATIVE_DRIVE_PATH; /* "c:foo" */
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}
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}
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/***********************************************************************
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* RtlIsDosDeviceName_U (NTDLL.@)
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*
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* Check if the given DOS path contains a DOS device name.
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*
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* Returns the length of the device name in the low word and its
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* position in the high word (both in bytes, not WCHARs), or 0 if no
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* device name is found.
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*/
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ULONG WINAPI RtlIsDosDeviceName_U( PCWSTR dos_name )
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{
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static const WCHAR consoleW[] = {'\\','\\','.','\\','C','O','N',0};
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static const WCHAR auxW[] = {'A','U','X'};
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static const WCHAR comW[] = {'C','O','M'};
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static const WCHAR conW[] = {'C','O','N'};
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static const WCHAR lptW[] = {'L','P','T'};
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static const WCHAR nulW[] = {'N','U','L'};
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static const WCHAR prnW[] = {'P','R','N'};
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static const WCHAR coninW[] = {'C','O','N','I','N','$'};
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static const WCHAR conoutW[] = {'C','O','N','O','U','T','$'};
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const WCHAR *start, *end, *p;
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switch(RtlDetermineDosPathNameType_U( dos_name ))
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{
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case INVALID_PATH:
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case UNC_PATH:
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return 0;
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case DEVICE_PATH:
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if (!wcsicmp( dos_name, consoleW ))
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return MAKELONG( sizeof(conW), 4 * sizeof(WCHAR) ); /* 4 is length of \\.\ prefix */
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return 0;
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case ABSOLUTE_DRIVE_PATH:
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case RELATIVE_DRIVE_PATH:
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start = dos_name + 2; /* skip drive letter */
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break;
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default:
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start = dos_name;
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break;
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}
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/* find start of file name */
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for (p = start; *p; p++) if (IS_SEPARATOR(*p)) start = p + 1;
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/* truncate at extension and ':' */
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for (end = start; *end; end++) if (*end == '.' || *end == ':') break;
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end--;
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/* remove trailing spaces */
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while (end >= start && *end == ' ') end--;
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/* now we have a potential device name between start and end, check it */
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switch(end - start + 1)
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{
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case 3:
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if (wcsnicmp( start, auxW, 3 ) &&
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wcsnicmp( start, conW, 3 ) &&
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wcsnicmp( start, nulW, 3 ) &&
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wcsnicmp( start, prnW, 3 )) break;
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return MAKELONG( 3 * sizeof(WCHAR), (start - dos_name) * sizeof(WCHAR) );
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case 4:
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if (wcsnicmp( start, comW, 3 ) && wcsnicmp( start, lptW, 3 )) break;
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if (*end <= '0' || *end > '9') break;
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return MAKELONG( 4 * sizeof(WCHAR), (start - dos_name) * sizeof(WCHAR) );
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case 6:
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if (wcsnicmp( start, coninW, ARRAY_SIZE(coninW) )) break;
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return MAKELONG( sizeof(coninW), (start - dos_name) * sizeof(WCHAR) );
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case 7:
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if (wcsnicmp( start, conoutW, ARRAY_SIZE(conoutW) )) break;
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return MAKELONG( sizeof(conoutW), (start - dos_name) * sizeof(WCHAR) );
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default: /* can't match anything */
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break;
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}
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return 0;
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}
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/**************************************************************************
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* RtlDosPathNameToNtPathName_U_WithStatus [NTDLL.@]
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*
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* dos_path: a DOS path name (fully qualified or not)
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* ntpath: pointer to a UNICODE_STRING to hold the converted
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* path name
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* file_part:will point (in ntpath) to the file part in the path
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* cd: directory reference (optional)
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*
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* FIXME:
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* + fill the cd structure
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*/
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NTSTATUS WINAPI RtlDosPathNameToNtPathName_U_WithStatus(const WCHAR *dos_path, UNICODE_STRING *ntpath,
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WCHAR **file_part, CURDIR *cd)
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{
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static const WCHAR global_prefix[] = {'\\','\\','?','\\'};
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static const WCHAR global_prefix2[] = {'\\','?','?','\\'};
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ULONG sz, offset;
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WCHAR local[MAX_PATH];
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LPWSTR ptr;
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TRACE("(%s,%p,%p,%p)\n", debugstr_w(dos_path), ntpath, file_part, cd);
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if (cd)
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{
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FIXME("Unsupported parameter\n");
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memset(cd, 0, sizeof(*cd));
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}
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if (!dos_path || !*dos_path)
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return STATUS_OBJECT_NAME_INVALID;
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if (!memcmp(dos_path, global_prefix, sizeof(global_prefix)) ||
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(!memcmp(dos_path, global_prefix2, sizeof(global_prefix2)) && dos_path[4]))
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{
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ntpath->Length = wcslen(dos_path) * sizeof(WCHAR);
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ntpath->MaximumLength = ntpath->Length + sizeof(WCHAR);
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ntpath->Buffer = RtlAllocateHeap(GetProcessHeap(), 0, ntpath->MaximumLength);
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if (!ntpath->Buffer) return STATUS_NO_MEMORY;
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memcpy( ntpath->Buffer, dos_path, ntpath->MaximumLength );
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ntpath->Buffer[1] = '?'; /* change \\?\ to \??\ */
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if (file_part)
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{
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if ((ptr = wcsrchr( ntpath->Buffer, '\\' )) && ptr[1]) *file_part = ptr + 1;
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else *file_part = NULL;
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}
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return STATUS_SUCCESS;
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}
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ptr = local;
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sz = RtlGetFullPathName_U(dos_path, sizeof(local), ptr, file_part);
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if (sz == 0) return STATUS_OBJECT_NAME_INVALID;
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if (sz > sizeof(local))
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{
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if (!(ptr = RtlAllocateHeap(GetProcessHeap(), 0, sz))) return STATUS_NO_MEMORY;
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sz = RtlGetFullPathName_U(dos_path, sz, ptr, file_part);
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}
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sz += (1 /* NUL */ + 4 /* unc\ */ + 4 /* \??\ */) * sizeof(WCHAR);
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if (sz > MAXWORD)
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{
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if (ptr != local) RtlFreeHeap(GetProcessHeap(), 0, ptr);
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return STATUS_OBJECT_NAME_INVALID;
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}
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ntpath->MaximumLength = sz;
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ntpath->Buffer = RtlAllocateHeap(GetProcessHeap(), 0, ntpath->MaximumLength);
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if (!ntpath->Buffer)
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{
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if (ptr != local) RtlFreeHeap(GetProcessHeap(), 0, ptr);
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return STATUS_NO_MEMORY;
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}
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wcscpy(ntpath->Buffer, NTDosPrefixW);
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switch (RtlDetermineDosPathNameType_U(ptr))
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{
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case UNC_PATH: /* \\foo */
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offset = 2;
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wcscat(ntpath->Buffer, UncPfxW);
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break;
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case DEVICE_PATH: /* \\.\foo */
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offset = 4;
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break;
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default:
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offset = 0;
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break;
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}
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wcscat(ntpath->Buffer, ptr + offset);
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ntpath->Length = wcslen(ntpath->Buffer) * sizeof(WCHAR);
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if (file_part && *file_part)
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*file_part = ntpath->Buffer + ntpath->Length / sizeof(WCHAR) - wcslen(*file_part);
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/* FIXME: cd filling */
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if (ptr != local) RtlFreeHeap(GetProcessHeap(), 0, ptr);
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return STATUS_SUCCESS;
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}
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/**************************************************************************
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* RtlDosPathNameToNtPathName_U [NTDLL.@]
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*
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* See RtlDosPathNameToNtPathName_U_WithStatus
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*/
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BOOLEAN WINAPI RtlDosPathNameToNtPathName_U(PCWSTR dos_path,
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PUNICODE_STRING ntpath,
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PWSTR* file_part,
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CURDIR* cd)
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{
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return RtlDosPathNameToNtPathName_U_WithStatus(dos_path, ntpath, file_part, cd) == STATUS_SUCCESS;
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}
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/**************************************************************************
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* RtlDosPathNameToRelativeNtPathName_U_WithStatus [NTDLL.@]
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*
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* See RtlDosPathNameToNtPathName_U_WithStatus (except the last parameter)
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*/
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NTSTATUS WINAPI RtlDosPathNameToRelativeNtPathName_U_WithStatus(const WCHAR *dos_path,
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UNICODE_STRING *ntpath, WCHAR **file_part, RTL_RELATIVE_NAME *relative)
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{
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TRACE("(%s,%p,%p,%p)\n", debugstr_w(dos_path), ntpath, file_part, relative);
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if (relative)
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{
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FIXME("Unsupported parameter\n");
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memset(relative, 0, sizeof(*relative));
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}
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/* FIXME: fill parameter relative */
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return RtlDosPathNameToNtPathName_U_WithStatus(dos_path, ntpath, file_part, NULL);
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}
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/**************************************************************************
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* RtlReleaseRelativeName [NTDLL.@]
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*/
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void WINAPI RtlReleaseRelativeName(RTL_RELATIVE_NAME *relative)
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{
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}
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/******************************************************************
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* RtlDosSearchPath_U
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*
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* Searches a file of name 'name' into a ';' separated list of paths
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* (stored in paths)
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* Doesn't seem to search elsewhere than the paths list
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* Stores the result in buffer (file_part will point to the position
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* of the file name in the buffer)
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* FIXME:
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* - how long shall the paths be ??? (MAX_PATH or larger with \\?\ constructs ???)
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*/
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ULONG WINAPI RtlDosSearchPath_U(LPCWSTR paths, LPCWSTR search, LPCWSTR ext,
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ULONG buffer_size, LPWSTR buffer,
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LPWSTR* file_part)
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{
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DOS_PATHNAME_TYPE type = RtlDetermineDosPathNameType_U(search);
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ULONG len = 0;
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if (type == RELATIVE_PATH)
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{
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ULONG allocated = 0, needed, filelen;
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WCHAR *name = NULL;
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filelen = 1 /* for \ */ + wcslen(search) + 1 /* \0 */;
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/* Windows only checks for '.' without worrying about path components */
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if (wcschr( search, '.' )) ext = NULL;
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if (ext != NULL) filelen += wcslen(ext);
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while (*paths)
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{
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LPCWSTR ptr;
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for (needed = 0, ptr = paths; *ptr != 0 && *ptr++ != ';'; needed++);
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if (needed + filelen > allocated)
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{
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if (!name) name = RtlAllocateHeap(GetProcessHeap(), 0,
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(needed + filelen) * sizeof(WCHAR));
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else
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{
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WCHAR *newname = RtlReAllocateHeap(GetProcessHeap(), 0, name,
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(needed + filelen) * sizeof(WCHAR));
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if (!newname) RtlFreeHeap(GetProcessHeap(), 0, name);
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name = newname;
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}
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if (!name) return 0;
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allocated = needed + filelen;
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}
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memmove(name, paths, needed * sizeof(WCHAR));
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/* append '\\' if none is present */
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if (needed > 0 && name[needed - 1] != '\\') name[needed++] = '\\';
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wcscpy(&name[needed], search);
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if (ext) wcscat(&name[needed], ext);
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if (RtlDoesFileExists_U(name))
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{
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len = RtlGetFullPathName_U(name, buffer_size, buffer, file_part);
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break;
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}
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paths = ptr;
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}
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RtlFreeHeap(GetProcessHeap(), 0, name);
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}
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else if (RtlDoesFileExists_U(search))
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{
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len = RtlGetFullPathName_U(search, buffer_size, buffer, file_part);
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}
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return len;
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}
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/******************************************************************
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* collapse_path
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*
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* Helper for RtlGetFullPathName_U.
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* Get rid of . and .. components in the path.
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*/
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static inline void collapse_path( WCHAR *path, UINT mark )
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{
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WCHAR *p, *next;
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/* convert every / into a \ */
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for (p = path; *p; p++) if (*p == '/') *p = '\\';
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/* collapse duplicate backslashes */
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next = path + max( 1, mark );
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for (p = next; *p; p++) if (*p != '\\' || next[-1] != '\\') *next++ = *p;
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*next = 0;
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p = path + mark;
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while (*p)
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{
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if (*p == '.')
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{
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switch(p[1])
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{
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case '\\': /* .\ component */
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next = p + 2;
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memmove( p, next, (wcslen(next) + 1) * sizeof(WCHAR) );
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continue;
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case 0: /* final . */
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if (p > path + mark) p--;
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*p = 0;
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continue;
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case '.':
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if (p[2] == '\\') /* ..\ component */
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{
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next = p + 3;
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if (p > path + mark)
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{
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p--;
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while (p > path + mark && p[-1] != '\\') p--;
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}
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memmove( p, next, (wcslen(next) + 1) * sizeof(WCHAR) );
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continue;
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}
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else if (!p[2]) /* final .. */
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{
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if (p > path + mark)
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{
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p--;
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while (p > path + mark && p[-1] != '\\') p--;
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if (p > path + mark) p--;
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}
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*p = 0;
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continue;
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}
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break;
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}
|
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}
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/* skip to the next component */
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while (*p && *p != '\\') p++;
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if (*p == '\\')
|
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{
|
|
/* remove last dot in previous dir name */
|
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if (p > path + mark && p[-1] == '.') memmove( p-1, p, (wcslen(p) + 1) * sizeof(WCHAR) );
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else p++;
|
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}
|
|
}
|
|
|
|
/* remove trailing spaces and dots (yes, Windows really does that, don't ask) */
|
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while (p > path + mark && (p[-1] == ' ' || p[-1] == '.')) p--;
|
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*p = 0;
|
|
}
|
|
|
|
|
|
/******************************************************************
|
|
* skip_unc_prefix
|
|
*
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* Skip the \\share\dir\ part of a file name. Helper for RtlGetFullPathName_U.
|
|
*/
|
|
static const WCHAR *skip_unc_prefix( const WCHAR *ptr )
|
|
{
|
|
ptr += 2;
|
|
while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* share name */
|
|
while (IS_SEPARATOR(*ptr)) ptr++;
|
|
while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* dir name */
|
|
while (IS_SEPARATOR(*ptr)) ptr++;
|
|
return ptr;
|
|
}
|
|
|
|
|
|
/******************************************************************
|
|
* get_full_path_helper
|
|
*
|
|
* Helper for RtlGetFullPathName_U
|
|
* Note: name and buffer are allowed to point to the same memory spot
|
|
*/
|
|
static ULONG get_full_path_helper(LPCWSTR name, LPWSTR buffer, ULONG size)
|
|
{
|
|
ULONG reqsize = 0, mark = 0, dep = 0, deplen;
|
|
LPWSTR ins_str = NULL;
|
|
LPCWSTR ptr;
|
|
const UNICODE_STRING* cd;
|
|
WCHAR tmp[4];
|
|
|
|
/* return error if name only consists of spaces */
|
|
for (ptr = name; *ptr; ptr++) if (*ptr != ' ') break;
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if (!*ptr) return 0;
|
|
|
|
RtlAcquirePebLock();
|
|
|
|
if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
|
|
cd = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir.DosPath;
|
|
else
|
|
cd = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory.DosPath;
|
|
|
|
switch (RtlDetermineDosPathNameType_U(name))
|
|
{
|
|
case UNC_PATH: /* \\foo */
|
|
ptr = skip_unc_prefix( name );
|
|
mark = (ptr - name);
|
|
break;
|
|
|
|
case DEVICE_PATH: /* \\.\foo */
|
|
mark = 4;
|
|
break;
|
|
|
|
case ABSOLUTE_DRIVE_PATH: /* c:\foo */
|
|
reqsize = sizeof(WCHAR);
|
|
tmp[0] = name[0];
|
|
ins_str = tmp;
|
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dep = 1;
|
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mark = 3;
|
|
break;
|
|
|
|
case RELATIVE_DRIVE_PATH: /* c:foo */
|
|
dep = 2;
|
|
if (wcsnicmp( name, cd->Buffer, 2 ))
|
|
{
|
|
UNICODE_STRING var, val;
|
|
|
|
tmp[0] = '=';
|
|
tmp[1] = name[0];
|
|
tmp[2] = ':';
|
|
tmp[3] = '\0';
|
|
var.Length = 3 * sizeof(WCHAR);
|
|
var.MaximumLength = 4 * sizeof(WCHAR);
|
|
var.Buffer = tmp;
|
|
val.Length = 0;
|
|
val.MaximumLength = size;
|
|
val.Buffer = RtlAllocateHeap(GetProcessHeap(), 0, size);
|
|
|
|
switch (RtlQueryEnvironmentVariable_U(NULL, &var, &val))
|
|
{
|
|
case STATUS_SUCCESS:
|
|
/* FIXME: Win2k seems to check that the environment variable actually points
|
|
* to an existing directory. If not, root of the drive is used
|
|
* (this seems also to be the only spot in RtlGetFullPathName that the
|
|
* existence of a part of a path is checked)
|
|
*/
|
|
/* fall through */
|
|
case STATUS_BUFFER_TOO_SMALL:
|
|
reqsize = val.Length + sizeof(WCHAR); /* append trailing '\\' */
|
|
val.Buffer[val.Length / sizeof(WCHAR)] = '\\';
|
|
ins_str = val.Buffer;
|
|
break;
|
|
case STATUS_VARIABLE_NOT_FOUND:
|
|
reqsize = 3 * sizeof(WCHAR);
|
|
tmp[0] = name[0];
|
|
tmp[1] = ':';
|
|
tmp[2] = '\\';
|
|
ins_str = tmp;
|
|
RtlFreeHeap(GetProcessHeap(), 0, val.Buffer);
|
|
break;
|
|
default:
|
|
ERR("Unsupported status code\n");
|
|
RtlFreeHeap(GetProcessHeap(), 0, val.Buffer);
|
|
break;
|
|
}
|
|
mark = 3;
|
|
break;
|
|
}
|
|
/* fall through */
|
|
|
|
case RELATIVE_PATH: /* foo */
|
|
reqsize = cd->Length;
|
|
ins_str = cd->Buffer;
|
|
if (cd->Buffer[1] != ':')
|
|
{
|
|
ptr = skip_unc_prefix( cd->Buffer );
|
|
mark = ptr - cd->Buffer;
|
|
}
|
|
else mark = 3;
|
|
break;
|
|
|
|
case ABSOLUTE_PATH: /* \xxx */
|
|
if (name[0] == '/') /* may be a Unix path */
|
|
{
|
|
char *unix_name;
|
|
WCHAR *nt_str;
|
|
SIZE_T buflen;
|
|
NTSTATUS status;
|
|
|
|
unix_name = RtlAllocateHeap( GetProcessHeap(), 0, 3 * wcslen(name) + 1 );
|
|
ntdll_wcstoumbs( name, wcslen(name) + 1, unix_name, 3 * wcslen(name) + 1, FALSE );
|
|
buflen = strlen(unix_name) + 10;
|
|
for (;;)
|
|
{
|
|
if (!(nt_str = RtlAllocateHeap( GetProcessHeap(), 0, buflen * sizeof(WCHAR) ))) break;
|
|
status = wine_unix_to_nt_file_name( unix_name, nt_str, &buflen );
|
|
if (status != STATUS_BUFFER_TOO_SMALL) break;
|
|
RtlFreeHeap( GetProcessHeap(), 0, nt_str );
|
|
}
|
|
RtlFreeHeap( GetProcessHeap(), 0, unix_name );
|
|
if (!status && buflen > 6 && nt_str[5] == ':')
|
|
{
|
|
reqsize = (buflen - 4) * sizeof(WCHAR);
|
|
if (reqsize <= size)
|
|
{
|
|
memcpy( buffer, nt_str + 4, reqsize );
|
|
collapse_path( buffer, 3 );
|
|
reqsize -= sizeof(WCHAR);
|
|
}
|
|
RtlFreeHeap( GetProcessHeap(), 0, nt_str );
|
|
goto done;
|
|
}
|
|
RtlFreeHeap( GetProcessHeap(), 0, nt_str );
|
|
}
|
|
if (cd->Buffer[1] == ':')
|
|
{
|
|
reqsize = 2 * sizeof(WCHAR);
|
|
tmp[0] = cd->Buffer[0];
|
|
tmp[1] = ':';
|
|
ins_str = tmp;
|
|
mark = 3;
|
|
}
|
|
else
|
|
{
|
|
ptr = skip_unc_prefix( cd->Buffer );
|
|
reqsize = (ptr - cd->Buffer) * sizeof(WCHAR);
|
|
mark = reqsize / sizeof(WCHAR);
|
|
ins_str = cd->Buffer;
|
|
}
|
|
break;
|
|
|
|
case UNC_DOT_PATH: /* \\. */
|
|
reqsize = 4 * sizeof(WCHAR);
|
|
dep = 3;
|
|
tmp[0] = '\\';
|
|
tmp[1] = '\\';
|
|
tmp[2] = '.';
|
|
tmp[3] = '\\';
|
|
ins_str = tmp;
|
|
mark = 4;
|
|
break;
|
|
|
|
case INVALID_PATH:
|
|
goto done;
|
|
}
|
|
|
|
/* enough space ? */
|
|
deplen = wcslen(name + dep) * sizeof(WCHAR);
|
|
if (reqsize + deplen + sizeof(WCHAR) > size)
|
|
{
|
|
/* not enough space, return need size (including terminating '\0') */
|
|
reqsize += deplen + sizeof(WCHAR);
|
|
goto done;
|
|
}
|
|
|
|
memmove(buffer + reqsize / sizeof(WCHAR), name + dep, deplen + sizeof(WCHAR));
|
|
if (reqsize) memcpy(buffer, ins_str, reqsize);
|
|
|
|
if (ins_str != tmp && ins_str != cd->Buffer)
|
|
RtlFreeHeap(GetProcessHeap(), 0, ins_str);
|
|
|
|
collapse_path( buffer, mark );
|
|
reqsize = wcslen(buffer) * sizeof(WCHAR);
|
|
|
|
done:
|
|
RtlReleasePebLock();
|
|
return reqsize;
|
|
}
|
|
|
|
/******************************************************************
|
|
* RtlGetFullPathName_U (NTDLL.@)
|
|
*
|
|
* Returns the number of bytes written to buffer (not including the
|
|
* terminating NULL) if the function succeeds, or the required number of bytes
|
|
* (including the terminating NULL) if the buffer is too small.
|
|
*
|
|
* file_part will point to the filename part inside buffer (except if we use
|
|
* DOS device name, in which case file_in_buf is NULL)
|
|
*
|
|
*/
|
|
DWORD WINAPI RtlGetFullPathName_U(const WCHAR* name, ULONG size, WCHAR* buffer,
|
|
WCHAR** file_part)
|
|
{
|
|
WCHAR* ptr;
|
|
DWORD dosdev;
|
|
DWORD reqsize;
|
|
|
|
TRACE("(%s %u %p %p)\n", debugstr_w(name), size, buffer, file_part);
|
|
|
|
if (!name || !*name) return 0;
|
|
|
|
if (file_part) *file_part = NULL;
|
|
|
|
/* check for DOS device name */
|
|
dosdev = RtlIsDosDeviceName_U(name);
|
|
if (dosdev)
|
|
{
|
|
DWORD offset = HIWORD(dosdev) / sizeof(WCHAR); /* get it in WCHARs, not bytes */
|
|
DWORD sz = LOWORD(dosdev); /* in bytes */
|
|
|
|
if (8 + sz + 2 > size) return sz + 10;
|
|
wcscpy(buffer, DeviceRootW);
|
|
memmove(buffer + 4, name + offset, sz);
|
|
buffer[4 + sz / sizeof(WCHAR)] = '\0';
|
|
/* file_part isn't set in this case */
|
|
return sz + 8;
|
|
}
|
|
|
|
reqsize = get_full_path_helper(name, buffer, size);
|
|
if (!reqsize) return 0;
|
|
if (reqsize > size)
|
|
{
|
|
LPWSTR tmp = RtlAllocateHeap(GetProcessHeap(), 0, reqsize);
|
|
reqsize = get_full_path_helper(name, tmp, reqsize);
|
|
if (reqsize + sizeof(WCHAR) > size) /* it may have worked the second time */
|
|
{
|
|
RtlFreeHeap(GetProcessHeap(), 0, tmp);
|
|
return reqsize + sizeof(WCHAR);
|
|
}
|
|
memcpy( buffer, tmp, reqsize + sizeof(WCHAR) );
|
|
RtlFreeHeap(GetProcessHeap(), 0, tmp);
|
|
}
|
|
|
|
/* find file part */
|
|
if (file_part && (ptr = wcsrchr(buffer, '\\')) != NULL && ptr >= buffer + 2 && *++ptr)
|
|
*file_part = ptr;
|
|
return reqsize;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* RtlGetLongestNtPathLength [NTDLL.@]
|
|
*
|
|
* Get the longest allowed path length
|
|
*
|
|
* PARAMS
|
|
* None.
|
|
*
|
|
* RETURNS
|
|
* The longest allowed path length (277 characters under Win2k).
|
|
*/
|
|
DWORD WINAPI RtlGetLongestNtPathLength(void)
|
|
{
|
|
return MAX_NT_PATH_LENGTH;
|
|
}
|
|
|
|
/******************************************************************
|
|
* RtlIsNameLegalDOS8Dot3 (NTDLL.@)
|
|
*
|
|
* Returns TRUE iff unicode is a valid DOS (8+3) name.
|
|
* If the name is valid, oem gets filled with the corresponding OEM string
|
|
* spaces is set to TRUE if unicode contains spaces
|
|
*/
|
|
BOOLEAN WINAPI RtlIsNameLegalDOS8Dot3( const UNICODE_STRING *unicode,
|
|
OEM_STRING *oem, BOOLEAN *spaces )
|
|
{
|
|
static const char illegal[] = "*?<>|\"+=,;[]:/\\\345";
|
|
int dot = -1;
|
|
int i;
|
|
char buffer[12];
|
|
OEM_STRING oem_str;
|
|
BOOLEAN got_space = FALSE;
|
|
|
|
if (!oem)
|
|
{
|
|
oem_str.Length = sizeof(buffer);
|
|
oem_str.MaximumLength = sizeof(buffer);
|
|
oem_str.Buffer = buffer;
|
|
oem = &oem_str;
|
|
}
|
|
if (RtlUpcaseUnicodeStringToCountedOemString( oem, unicode, FALSE ) != STATUS_SUCCESS)
|
|
return FALSE;
|
|
|
|
if (oem->Length > 12) return FALSE;
|
|
|
|
/* a starting . is invalid, except for . and .. */
|
|
if (oem->Length > 0 && oem->Buffer[0] == '.')
|
|
{
|
|
if (oem->Length != 1 && (oem->Length != 2 || oem->Buffer[1] != '.')) return FALSE;
|
|
if (spaces) *spaces = FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
for (i = 0; i < oem->Length; i++)
|
|
{
|
|
switch (oem->Buffer[i])
|
|
{
|
|
case ' ':
|
|
/* leading/trailing spaces not allowed */
|
|
if (!i || i == oem->Length-1 || oem->Buffer[i+1] == '.') return FALSE;
|
|
got_space = TRUE;
|
|
break;
|
|
case '.':
|
|
if (dot != -1) return FALSE;
|
|
dot = i;
|
|
break;
|
|
default:
|
|
if (strchr(illegal, oem->Buffer[i])) return FALSE;
|
|
break;
|
|
}
|
|
}
|
|
/* check file part is shorter than 8, extension shorter than 3
|
|
* dot cannot be last in string
|
|
*/
|
|
if (dot == -1)
|
|
{
|
|
if (oem->Length > 8) return FALSE;
|
|
}
|
|
else
|
|
{
|
|
if (dot > 8 || (oem->Length - dot > 4) || dot == oem->Length - 1) return FALSE;
|
|
}
|
|
if (spaces) *spaces = got_space;
|
|
return TRUE;
|
|
}
|
|
|
|
/******************************************************************
|
|
* RtlGetCurrentDirectory_U (NTDLL.@)
|
|
*
|
|
*/
|
|
ULONG WINAPI RtlGetCurrentDirectory_U(ULONG buflen, LPWSTR buf)
|
|
{
|
|
UNICODE_STRING* us;
|
|
ULONG len;
|
|
|
|
TRACE("(%u %p)\n", buflen, buf);
|
|
|
|
RtlAcquirePebLock();
|
|
|
|
if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
|
|
us = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir.DosPath;
|
|
else
|
|
us = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory.DosPath;
|
|
|
|
len = us->Length / sizeof(WCHAR);
|
|
if (us->Buffer[len - 1] == '\\' && us->Buffer[len - 2] != ':')
|
|
len--;
|
|
|
|
if (buflen / sizeof(WCHAR) > len)
|
|
{
|
|
memcpy(buf, us->Buffer, len * sizeof(WCHAR));
|
|
buf[len] = '\0';
|
|
}
|
|
else
|
|
{
|
|
len++;
|
|
}
|
|
|
|
RtlReleasePebLock();
|
|
|
|
return len * sizeof(WCHAR);
|
|
}
|
|
|
|
/******************************************************************
|
|
* RtlSetCurrentDirectory_U (NTDLL.@)
|
|
*
|
|
*/
|
|
NTSTATUS WINAPI RtlSetCurrentDirectory_U(const UNICODE_STRING* dir)
|
|
{
|
|
FILE_FS_DEVICE_INFORMATION device_info;
|
|
OBJECT_ATTRIBUTES attr;
|
|
UNICODE_STRING newdir;
|
|
IO_STATUS_BLOCK io;
|
|
CURDIR *curdir;
|
|
HANDLE handle;
|
|
NTSTATUS nts;
|
|
ULONG size;
|
|
PWSTR ptr;
|
|
|
|
newdir.Buffer = NULL;
|
|
|
|
RtlAcquirePebLock();
|
|
|
|
if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
|
|
curdir = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir;
|
|
else
|
|
curdir = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory;
|
|
|
|
if (!RtlDosPathNameToNtPathName_U( dir->Buffer, &newdir, NULL, NULL ))
|
|
{
|
|
nts = STATUS_OBJECT_NAME_INVALID;
|
|
goto out;
|
|
}
|
|
|
|
attr.Length = sizeof(attr);
|
|
attr.RootDirectory = 0;
|
|
attr.Attributes = OBJ_CASE_INSENSITIVE;
|
|
attr.ObjectName = &newdir;
|
|
attr.SecurityDescriptor = NULL;
|
|
attr.SecurityQualityOfService = NULL;
|
|
|
|
nts = NtOpenFile( &handle, FILE_TRAVERSE | SYNCHRONIZE, &attr, &io, FILE_SHARE_READ | FILE_SHARE_WRITE,
|
|
FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
|
|
if (nts != STATUS_SUCCESS) goto out;
|
|
|
|
/* don't keep the directory handle open on removable media */
|
|
if (!NtQueryVolumeInformationFile( handle, &io, &device_info,
|
|
sizeof(device_info), FileFsDeviceInformation ) &&
|
|
(device_info.Characteristics & FILE_REMOVABLE_MEDIA))
|
|
{
|
|
NtClose( handle );
|
|
handle = 0;
|
|
}
|
|
|
|
if (curdir->Handle) NtClose( curdir->Handle );
|
|
curdir->Handle = handle;
|
|
|
|
/* append trailing \ if missing */
|
|
size = newdir.Length / sizeof(WCHAR);
|
|
ptr = newdir.Buffer;
|
|
ptr += 4; /* skip \??\ prefix */
|
|
size -= 4;
|
|
if (size && ptr[size - 1] != '\\') ptr[size++] = '\\';
|
|
|
|
/* convert \??\UNC\ path to \\ prefix */
|
|
if (size >= 4 && !wcsnicmp(ptr, UncPfxW, 4))
|
|
{
|
|
ptr += 2;
|
|
size -= 2;
|
|
*ptr = '\\';
|
|
}
|
|
|
|
memcpy( curdir->DosPath.Buffer, ptr, size * sizeof(WCHAR));
|
|
curdir->DosPath.Buffer[size] = 0;
|
|
curdir->DosPath.Length = size * sizeof(WCHAR);
|
|
|
|
TRACE( "curdir now %s %p\n", debugstr_w(curdir->DosPath.Buffer), curdir->Handle );
|
|
|
|
out:
|
|
RtlFreeUnicodeString( &newdir );
|
|
RtlReleasePebLock();
|
|
return nts;
|
|
}
|