[hbelusca] 59366: [RTL:PATH] - Use UNICODE markers for characters (the L'.' symbol for example) (i.e. fix code originating from Wine). - Accept NULL Path/FileName in RtlDosSearchPath_U (fixes some ...
29 Jun
2013
29 Jun
'13
3:29 p.m.
Author: hbelusca
Date: Sat Jun 29 15:29:09 2013
New Revision: 59366
URL: http://svn.reactos.org/svn/reactos?rev=59366&view=rev
Log:
[RTL:PATH]
- Use UNICODE markers for characters (the L'.' symbol for example) (i.e. fix code
originating from Wine).
- Accept NULL Path/FileName in RtlDosSearchPath_U (fixes some ntdll_apitest tests, see
after).
Fixes for RtlGetFullPathName_Ustr:
==================================
- Rework RtlGetFullPathName_Ustr by "reusing" little parts of the code of our
old RtlGetFullPathName_U coming from Wine (and then make RtlGetFullPathName_U call
RtlGetFullPathName_Ustr instead).
- Include the get_full_path_helper code into RtlGetFullPathName_Ustr and NT'ify it,
and fix it too:
* Fix skipping trailing path separators (slashes / backslashes) at the end of pathes.
* Zero-out the destination buffer
* Fix retrieving the "Short Name" (ie. the file name) out from the given full
path name.
* Fix remaining UNC path handling (ie. correctly remove trailing points, spaces, in UNC
paths).
They fix the following tests:
* kernel32:FindFiles (6 failures to full success)
* ntdll:RtlDosPathNameToNtPathName_U (4 failures to full success)
* ntdll:RtlDosSearchPath_U (6 failures to full success)
* ntdll:RtlGetFullPathName_U (8 failures down to 2 failures because we don't correctly
NULLify the user buffer when trimming unneeded chars)
* ntdll:RtlGetFullPathName_UstrEx (6 failures down to 2 failures for the same reasons as
the previous test)
To Do: Finish to NT'ify the code originated from Wine, fix NULLification of the user
buffer (when trimming unneeded characters), and "clean" the code ie. remove
extra DPRINTs and added FIXMEs and NOTEs comments.
Modified:
trunk/reactos/lib/rtl/path.c
Modified: trunk/reactos/lib/rtl/path.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/lib/rtl/path.c?rev=59366&a…
==============================================================================
--- trunk/reactos/lib/rtl/path.c [iso-8859-1] (original)
+++ trunk/reactos/lib/rtl/path.c [iso-8859-1] Sat Jun 29 15:29:09 2013
@@ -141,7 +141,7 @@
{
/* Stop if we hit something else than a space or period */
c = PathCopy.Buffer[PathChars - 1];
- if ((c != '.') && (c != ' ')) break;
+ if ((c != L'.') && (c != L' ')) break;
/* Fixup the lengths */
PathCopy.Length -= sizeof(WCHAR);
@@ -160,7 +160,7 @@
{
/* Check if the character is a path or drive separator */
c = *End;
- if (IS_PATH_SEPARATOR(c) || ((c == ':') && (End ==
PathCopy.Buffer + 1)))
+ if (IS_PATH_SEPARATOR(c) || ((c == L':') && (End ==
PathCopy.Buffer + 1)))
{
/* Get the next lower case character */
End++;
@@ -168,7 +168,7 @@
/* Check if it's a DOS device (LPT, COM, PRN, AUX, or NUL) */
if ((End < &PathCopy.Buffer[OriginalLength / sizeof(WCHAR)])
&&
- ((c == 'l') || (c == 'c') || (c == 'p') || (c
== 'a') || (c == 'n')))
+ ((c == L'l') || (c == L'c') || (c == L'p') ||
(c == L'a') || (c == L'n')))
{
/* Calculate the offset */
ReturnOffset = (USHORT)((PCHAR)End - (PCHAR)PathCopy.Buffer);
@@ -191,7 +191,7 @@
/* Get the next lower case character and check if it's a DOS device */
c = RtlDowncaseUnicodeChar(*PathCopy.Buffer);
- if ((c != 'l') && (c != 'c') && (c !=
'p') && (c != 'a') && (c != 'n'))
+ if ((c != L'l') && (c != L'c') && (c !=
L'p') && (c != L'a') && (c != L'n'))
{
/* Not LPT, COM, PRN, AUX, or NUL */
return 0;
@@ -204,12 +204,12 @@
while (Start < End)
{
c = *Start;
- if ((c == '.') || (c == ':')) break;
+ if ((c == L'.') || (c == L':')) break;
Start++;
}
/* And then go backwards to get rid of spaces */
- while ((Start > PathCopy.Buffer) && (Start[-1] == ' ')) --Start;
+ while ((Start > PathCopy.Buffer) && (Start[-1] == L' ')) --Start;
/* Finally see how many characters are left, and that's our size */
PathChars = (USHORT)(Start - PathCopy.Buffer);
@@ -217,7 +217,7 @@
/* Check if this is a COM or LPT port, which has a digit after it */
if ((PathChars == 4) &&
- (iswdigit(PathCopy.Buffer[3]) && (PathCopy.Buffer[3] != '0')))
+ (iswdigit(PathCopy.Buffer[3]) && (PathCopy.Buffer[3] != L'0')))
{
/* Don't compare the number part, just check for LPT or COM */
PathCopy.Length -= sizeof(WCHAR);
@@ -282,6 +282,122 @@
/* Return the status */
return Status;
+}
+
+
+
+/******************************************************************
+ * RtlpCollapsePath (from WINE)
+ *
+ * Helper for RtlGetFullPathName_U.
+ * 1) Convert slashes into backslashes
+ * 2) Get rid of duplicate backslashes
+ * 3) Get rid of . and .. components in the path.
+ */
+static VOID
+RtlpCollapsePath(PWSTR path, ULONG mark, BOOLEAN SkipTrailingPathSeparators)
+{
+ PWSTR p, next;
+
+ /* convert every / into a \ */
+ for (p = path; *p; p++)
+ {
+ if (*p == L'/') *p = L'\\';
+ }
+
+ /* collapse duplicate backslashes */
+ next = path + max( 1, mark );
+ for (p = next; *p; p++)
+ {
+ if (*p != L'\\' || next[-1] != L'\\') *next++ = *p;
+ }
+ *next = UNICODE_NULL;
+
+ p = path + mark;
+ while (*p)
+ {
+ if (*p == L'.')
+ {
+ switch(p[1])
+ {
+ case UNICODE_NULL: /* final . */
+ if (p > path + mark) p--;
+ *p = UNICODE_NULL;
+ continue;
+ case L'\\': /* .\ component */
+ next = p + 2;
+ RtlMoveMemory( p, next, (wcslen(next) + 1) * sizeof(WCHAR) );
+ continue;
+ case L'.':
+ if (p[2] == L'\\') /* ..\ component */
+ {
+ next = p + 3;
+ if (p > path + mark)
+ {
+ p--;
+ while (p > path + mark && p[-1] != L'\\')
p--;
+ }
+ RtlMoveMemory( p, next, (wcslen(next) + 1) * sizeof(WCHAR) );
+ continue;
+ }
+ else if (!p[2]) /* final .. */
+ {
+ if (p > path + mark)
+ {
+ p--;
+ while (p > path + mark && p[-1] != L'\\')
p--;
+ if (p > path + mark) p--;
+ }
+ *p = UNICODE_NULL;
+ continue;
+ }
+ break;
+ }
+ }
+ /* skip to the next component */
+ while (*p && *p != L'\\') p++;
+ if (*p == L'\\')
+ {
+ /* remove last dot in previous dir name */
+ if (p > path + mark && p[-1] == L'.')
+ RtlMoveMemory( p-1, p, (wcslen(p) + 1) * sizeof(WCHAR) );
+ else
+ p++;
+ }
+ }
+
+ /* Remove trailing backslashes if needed (after the UNC part if it exists) */
+ if (SkipTrailingPathSeparators)
+ {
+ while (p > path + mark && IS_PATH_SEPARATOR(p[-1])) *p-- =
UNICODE_NULL;
+ }
+
+ /* Remove trailing spaces and dots (for all the path) */
+ while (p > path && (p[-1] == L' ' || p[-1] == L'.')) *p--
= UNICODE_NULL;
+
+ /* Null-terminate the string */
+ *p = UNICODE_NULL;
+}
+
+/******************************************************************
+ * RtlpSkipUNCPrefix (from WINE)
+ *
+ * Helper for RtlGetFullPathName_U
+ * Skip the \\share\dir part of a file name and return the new position
+ * (which can point on the last backslash of "dir\")
+ */
+static SIZE_T
+RtlpSkipUNCPrefix(PCWSTR FileNameBuffer)
+{
+ PCWSTR UncPath = FileNameBuffer + 2;
+ DPRINT("RtlpSkipUNCPrefix(%S)\n", FileNameBuffer);
+
+ while (*UncPath && !IS_PATH_SEPARATOR(*UncPath)) UncPath++; /* share name
*/
+ while (IS_PATH_SEPARATOR(*UncPath)) UncPath++;
+ while (*UncPath && !IS_PATH_SEPARATOR(*UncPath)) UncPath++; /* dir name */
+ /* while (IS_PATH_SEPARATOR(*UncPath)) UncPath++; */
+
+ return (UncPath - FileNameBuffer);
}
ULONG
@@ -294,10 +410,26 @@
_Out_opt_ PBOOLEAN InvalidName,
_Out_ RTL_PATH_TYPE *PathType)
{
+ NTSTATUS Status;
PWCHAR FileNameBuffer;
ULONG FileNameLength, FileNameChars, DosLength, DosLengthOffset, FullLength;
+ BOOLEAN SkipTrailingPathSeparators;
WCHAR c;
- NTSTATUS Status;
+
+
+ ULONG reqsize = 0;
+ PCWSTR ptr;
+
+ PCUNICODE_STRING CurDirName;
+ UNICODE_STRING EnvVarName, EnvVarValue;
+ WCHAR EnvVarNameBuffer[4];
+
+ ULONG PrefixCut = 0; // Where the path really starts (after the skipped
prefix)
+ PWCHAR Prefix = NULL; // pointer to the string to be inserted as the new path
prefix
+ ULONG PrefixLength = 0;
+ PWCHAR Source;
+ ULONG SourceLength;
+
/* For now, assume the name is valid */
DPRINT("Filename: %wZ\n", FileName);
@@ -306,39 +438,48 @@
/* Handle initial path type and failure case */
*PathType = RtlPathTypeUnknown;
- if (!(FileName->Length) || (FileName->Buffer[0] == UNICODE_NULL)) return 0;
+ if ((FileName->Length == 0) || (FileName->Buffer[0] == UNICODE_NULL)) return
0;
/* Break filename into component parts */
FileNameBuffer = FileName->Buffer;
FileNameLength = FileName->Length;
- FileNameChars = FileNameLength / sizeof(WCHAR);
+ FileNameChars = FileNameLength / sizeof(WCHAR);
/* Kill trailing spaces */
c = FileNameBuffer[FileNameChars - 1];
- while ((FileNameLength) && (c == L' '))
+ while ((FileNameLength != 0) && (c == L' '))
{
/* Keep going, ignoring the spaces */
FileNameLength -= sizeof(WCHAR);
- if (FileNameLength) c = FileNameBuffer[FileNameLength / sizeof(WCHAR) - 1];
+ if (FileNameLength != 0) c = FileNameBuffer[FileNameLength / sizeof(WCHAR) - 1];
}
/* Check if anything is left */
- if (!FileNameLength) return 0;
+ if (FileNameLength == 0) return 0;
+
+ /*
+ * Check whether we'll need to skip trailing path separators in the
+ * computed full path name. If the original file name already contained
+ * trailing separators, then we keep them in the full path name. On the
+ * other hand, if the original name didn't contain any trailing separators
+ * then we'll skip it in the full path name.
+ */
+ SkipTrailingPathSeparators = !IS_PATH_SEPARATOR(FileNameBuffer[FileNameChars - 1]);
/* Check if this is a DOS name */
DosLength = RtlIsDosDeviceName_Ustr(FileName);
DPRINT("DOS length for filename: %lx %wZ\n", DosLength, FileName);
- if (DosLength)
+ if (DosLength != 0)
{
/* Zero out the short name */
if (ShortName) *ShortName = NULL;
/* See comment for RtlIsDosDeviceName_Ustr if this is confusing... */
- DosLengthOffset = DosLength >> 16;
- DosLength = DosLength & 0xFFFF;
+ DosLengthOffset = HIWORD(DosLength);
+ DosLength = LOWORD(DosLength);
/* Do we have a DOS length, and does the caller want validity? */
- if ((InvalidName) && (DosLengthOffset))
+ if (InvalidName && (DosLengthOffset != 0))
{
/* Do the check */
Status = RtlpCheckDeviceName(FileName, DosLengthOffset, InvalidName);
@@ -370,13 +511,226 @@
return FullLength + sizeof(UNICODE_NULL);
}
- /* This should work well enough for our current needs */
+ /* Zero out the destination buffer. FileName must be different from Buffer */
+ RtlZeroMemory(Buffer, Size);
+
+ /* Get the path type */
*PathType = RtlDetermineDosPathNameType_U(FileNameBuffer);
- DPRINT("Path type: %lx\n", *PathType);
-
- /* This is disgusting... but avoids re-writing everything */
- DPRINT("Calling old API with '%S' and %lu and %S\n",
FileNameBuffer, Size, Buffer);
- return RtlGetFullPathName_U(FileNameBuffer, Size, Buffer, (PWSTR*)ShortName);
+
+
+
+ /**********************************************
+ ** CODE REWRITTEN IS HAPPENING THERE **
+ **********************************************/
+ Source = FileNameBuffer;
+ SourceLength = FileNameLength;
+ EnvVarValue.Buffer = NULL;
+
+ /* Lock the PEB to get the current directory */
+ RtlAcquirePebLock();
+ CurDirName = &NtCurrentPeb()->ProcessParameters->CurrentDirectory.DosPath;
+
+ switch (*PathType)
+ {
+ case RtlPathTypeUncAbsolute: /* \\foo */
+ PrefixCut = RtlpSkipUNCPrefix(FileNameBuffer);
+ break;
+
+ case RtlPathTypeLocalDevice: /* \\.\foo */
+ PrefixCut = 4;
+ break;
+
+ case RtlPathTypeDriveAbsolute: /* c:\foo */
+ ASSERT(FileNameBuffer[1] == L':');
+ ASSERT(IS_PATH_SEPARATOR(FileNameBuffer[2]));
+
+ Prefix = FileNameBuffer;
+ PrefixLength = 3 * sizeof(WCHAR);
+ Source += 3;
+ SourceLength -= 3 * sizeof(WCHAR);
+
+ PrefixCut = 3;
+ break;
+
+ case RtlPathTypeDriveRelative: /* c:foo */
+ Source += 2;
+ SourceLength -= 2 * sizeof(WCHAR);
+ if (RtlUpcaseUnicodeChar(FileNameBuffer[0]) !=
RtlUpcaseUnicodeChar(CurDirName->Buffer[0]) ||
+ CurDirName->Buffer[1] != L':')
+ {
+ EnvVarNameBuffer[0] = L'=';
+ EnvVarNameBuffer[1] = FileNameBuffer[0];
+ EnvVarNameBuffer[2] = L':';
+ EnvVarNameBuffer[3] = UNICODE_NULL;
+
+ EnvVarName.Length = 3 * sizeof(WCHAR);
+ EnvVarName.MaximumLength = EnvVarName.Length + sizeof(WCHAR);
+ EnvVarName.Buffer = EnvVarNameBuffer;
+
+ // FIXME: Is it possible to use the user-given buffer ?
+ // RtlInitEmptyUnicodeString(&EnvVarValue, NULL, Size);
+ EnvVarValue.Length = 0;
+ EnvVarValue.MaximumLength = (USHORT)Size;
+ EnvVarValue.Buffer = RtlAllocateHeap(RtlGetProcessHeap(), 0, Size);
+ if (EnvVarValue.Buffer == NULL)
+ {
+ Prefix = NULL;
+ PrefixLength = 0;
+ goto Quit;
+ }
+
+ Status = RtlQueryEnvironmentVariable_U(NULL, &EnvVarName,
&EnvVarValue);
+ switch (Status)
+ {
+ case STATUS_SUCCESS:
+ /*
+ * (From Wine)
+ * 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).
+ */
+ EnvVarValue.Buffer[EnvVarValue.Length / sizeof(WCHAR)] =
L'\\';
+ Prefix = EnvVarValue.Buffer;
+ PrefixLength = EnvVarValue.Length + sizeof(WCHAR); /* Append
trailing '\\' */
+ break;
+
+ case STATUS_BUFFER_TOO_SMALL:
+ reqsize = EnvVarValue.Length + SourceLength +
sizeof(UNICODE_NULL);
+ goto Quit;
+
+ default:
+ DPRINT1("RtlQueryEnvironmentVariable_U returned
0x%08lx\n", Status);
+
+ EnvVarNameBuffer[0] = FileNameBuffer[0];
+ EnvVarNameBuffer[1] = L':';
+ EnvVarNameBuffer[2] = L'\\';
+ EnvVarNameBuffer[3] = UNICODE_NULL;
+ Prefix = EnvVarNameBuffer;
+ PrefixLength = 3 * sizeof(WCHAR);
+
+ RtlFreeHeap(RtlGetProcessHeap(), 0, EnvVarValue.Buffer);
+ EnvVarValue.Buffer = NULL;
+ break;
+ }
+ PrefixCut = 3;
+ break;
+ }
+ /* Fall through */
+ DPRINT1("RtlPathTypeDriveRelative - Using fall-through to
RtlPathTypeRelative\n");
+
+ case RtlPathTypeRelative: /* foo */
+ Prefix = CurDirName->Buffer;
+ PrefixLength = CurDirName->Length;
+ if (CurDirName->Buffer[1] != L':')
+ {
+ PrefixCut = RtlpSkipUNCPrefix(CurDirName->Buffer);
+ }
+ else
+ {
+ PrefixCut = 3;
+ }
+ break;
+
+ case RtlPathTypeRooted: /* \xxx */
+ if (CurDirName->Buffer[1] == L':')
+ {
+ // The path starts with "C:\"
+ ASSERT(CurDirName->Buffer[1] == L':');
+ ASSERT(IS_PATH_SEPARATOR(CurDirName->Buffer[2]));
+
+ Prefix = CurDirName->Buffer;
+ PrefixLength = 3 * sizeof(WCHAR); // Skip "C:\"
+
+ PrefixCut = 3; // Source index location incremented of + 3
+ }
+ else
+ {
+ PrefixCut = RtlpSkipUNCPrefix(CurDirName->Buffer);
+ PrefixLength = PrefixCut * sizeof(WCHAR);
+ Prefix = CurDirName->Buffer;
+ }
+ break;
+
+ case RtlPathTypeRootLocalDevice: /* \\. */
+ Prefix = DeviceRootString.Buffer;
+ PrefixLength = DeviceRootString.Length;
+ Source += 3;
+ SourceLength -= 3 * sizeof(WCHAR);
+
+ PrefixCut = 4;
+ break;
+
+ case RtlPathTypeUnknown:
+ goto Quit;
+ }
+
+ /* Do we have enough space for storing the full path? */
+ reqsize = PrefixLength;
+ if (reqsize + SourceLength + sizeof(WCHAR) > Size)
+ {
+ /* Not enough space, return needed size (including terminating '\0') */
+ reqsize += SourceLength + sizeof(WCHAR);
+ goto Quit;
+ }
+
+ /*
+ * Build the full path
+ */
+ // if (ShortName) DPRINT1("buffer(1) = %S\n", Buffer);
+ /* Copy the path's prefix */
+ if (PrefixLength) RtlMoveMemory(Buffer, Prefix, PrefixLength);
+ // if (ShortName) DPRINT1("buffer(2) = %S\n", Buffer);
+ /* Copy the remaining part of the path */
+ RtlMoveMemory(Buffer + PrefixLength / sizeof(WCHAR), Source, SourceLength +
sizeof(WCHAR));
+ // if (ShortName) DPRINT1("buffer(3) = %S\n", Buffer);
+
+ /* Some cleanup */
+ Prefix = NULL;
+ if (EnvVarValue.Buffer)
+ {
+ RtlFreeHeap(RtlGetProcessHeap(), 0, EnvVarValue.Buffer);
+ EnvVarValue.Buffer = NULL;
+ }
+
+ /*
+ * Finally, put the path in canonical form,
+ * i.e. simplify redundant . and .., etc...
+ */
+ // if (*PathType == RtlPathTypeUncAbsolute)
DPRINT1("RtlpCollapsePath('%S', %lu)\n", Buffer, PrefixCut);
+ RtlpCollapsePath(Buffer, PrefixCut, SkipTrailingPathSeparators);
+ // if (ShortName) DPRINT1("buffer(4) = %S\n", Buffer);
+
+ /* Get the length of the full path name, without its terminating null character */
+ reqsize = wcslen(Buffer) * sizeof(WCHAR);
+
+ /* Find the file part, which is present after the last path separator */
+ if (ShortName)
+ {
+ ptr = wcsrchr(Buffer, L'\\');
+ if (ptr) ++ptr; // Skip it
+
+ /*
+ * For UNC paths, the file part is after the \\share\dir part of the path.
+ */
+ PrefixCut = (*PathType == RtlPathTypeUncAbsolute ? PrefixCut : 3);
+
+ if (ptr && *ptr && (ptr >= Buffer + PrefixCut))
+ {
+ *ShortName = ptr;
+ }
+ else
+ {
+ /* Zero-out the short name */
+ *ShortName = NULL;
+ }
+ }
+
+Quit:
+ /* Release PEB lock */
+ RtlReleasePebLock();
+ return (ULONG)reqsize;
}
NTSTATUS
@@ -992,8 +1346,6 @@
return Length * sizeof(WCHAR);
}
-
-
/*
* @implemented
*/
@@ -1195,284 +1547,6 @@
}
return Status;
-}
-
-
-/******************************************************************
- * collapse_path
- *
- * Helper for RtlGetFullPathName_U.
- * Get rid of . and .. components in the path.
- */
-void FORCEINLINE collapse_path( WCHAR *path, UINT mark )
-{
- WCHAR *p, *next;
-
- /* convert every / into a \ */
- for (p = path; *p; p++) if (*p == '/') *p = '\\';
-
- /* collapse duplicate backslashes */
- next = path + max( 1, mark );
- for (p = next; *p; p++) if (*p != '\\' || next[-1] != '\\') *next++ =
*p;
- *next = 0;
-
- p = path + mark;
- while (*p)
- {
- if (*p == '.')
- {
- switch(p[1])
- {
- case '\\': /* .\ component */
- next = p + 2;
- memmove( p, next, (wcslen(next) + 1) * sizeof(WCHAR) );
- continue;
- case 0: /* final . */
- if (p > path + mark) p--;
- *p = 0;
- continue;
- case '.':
- if (p[2] == '\\') /* ..\ component */
- {
- next = p + 3;
- if (p > path + mark)
- {
- p--;
- while (p > path + mark && p[-1] != '\\') p--;
- }
- memmove( p, next, (wcslen(next) + 1) * sizeof(WCHAR) );
- continue;
- }
- else if (!p[2]) /* final .. */
- {
- if (p > path + mark)
- {
- p--;
- while (p > path + mark && p[-1] != '\\') p--;
- if (p > path + mark) p--;
- }
- *p = 0;
- continue;
- }
- break;
- }
- }
- /* skip to the next component */
- while (*p && *p != '\\') p++;
- if (*p == '\\')
- {
- /* remove last dot in previous dir name */
- if (p > path + mark && p[-1] == '.') memmove( p-1, p,
(wcslen(p) + 1) * sizeof(WCHAR) );
- else p++;
- }
- }
-
- /* remove trailing spaces and dots (yes, Windows really does that, don't ask) */
- while (p > path + mark && (p[-1] == ' ' || p[-1] == '.'))
p--;
- *p = 0;
-}
-
-
-
-/******************************************************************
- * skip_unc_prefix
- *
- * 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_PATH_SEPARATOR(*ptr)) ptr++; /* share name */
- while (IS_PATH_SEPARATOR(*ptr)) ptr++;
- while (*ptr && !IS_PATH_SEPARATOR(*ptr)) ptr++; /* dir name */
- while (IS_PATH_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)
-{
- SIZE_T 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;
- if (!*ptr) return 0;
-
- RtlAcquirePebLock();
-
- //cd =
&((PCURDIR)&NtCurrentTeb()->ProcessEnvironmentBlock->ProcessParameters->CurrentDirectory.DosPath)->DosPath;
- cd =
&NtCurrentTeb()->ProcessEnvironmentBlock->ProcessParameters->CurrentDirectory.DosPath;
-
- switch (RtlDetermineDosPathNameType_U(name))
- {
- case RtlPathTypeUncAbsolute: /* \\foo */
- ptr = skip_unc_prefix( name );
- mark = (ptr - name);
- break;
-
- case RtlPathTypeLocalDevice: /* \\.\foo */
- mark = 4;
- break;
-
- case RtlPathTypeDriveAbsolute: /* c:\foo */
- reqsize = sizeof(WCHAR);
- tmp[0] = towupper(name[0]);
- ins_str = tmp;
- dep = 1;
- mark = 3;
- break;
-
- case RtlPathTypeDriveRelative: /* c:foo */
- dep = 2;
- if (towupper(name[0]) != towupper(cd->Buffer[0]) || cd->Buffer[1] !=
':')
- {
- 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 = (USHORT)size;
- val.Buffer = RtlAllocateHeap(RtlGetProcessHeap(), 0, size);
- if (val.Buffer == NULL)
- {
- reqsize = 0;
- goto done;
- }
-
- 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 thru */
- 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(RtlGetProcessHeap(), 0, val.Buffer);
- break;
- default:
- DPRINT1("Unsupported status code\n");
- RtlFreeHeap(RtlGetProcessHeap(), 0, val.Buffer);
- break;
- }
- mark = 3;
- break;
- }
- /* fall through */
-
- case RtlPathTypeRelative: /* 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 RtlPathTypeRooted: /* \xxx */
-#ifdef __WINE__
- if (name[0] == '/') /* may be a Unix path */
- {
- const WCHAR *ptr = name;
- int drive = find_drive_root( &ptr );
- if (drive != -1)
- {
- reqsize = 3 * sizeof(WCHAR);
- tmp[0] = 'A' + drive;
- tmp[1] = ':';
- tmp[2] = '\\';
- ins_str = tmp;
- mark = 3;
- dep = ptr - name;
- break;
- }
- }
-#endif
- 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 RtlPathTypeRootLocalDevice: /* \\. */
- reqsize = 4 * sizeof(WCHAR);
- dep = 3;
- tmp[0] = '\\';
- tmp[1] = '\\';
- tmp[2] = '.';
- tmp[3] = '\\';
- ins_str = tmp;
- mark = 4;
- break;
-
- case RtlPathTypeUnknown:
- 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);
- reqsize += deplen;
-
- if (ins_str && ins_str != tmp && ins_str != cd->Buffer)
- RtlFreeHeap(RtlGetProcessHeap(), 0, ins_str);
-
- collapse_path( buffer, (ULONG)mark );
- reqsize = wcslen(buffer) * sizeof(WCHAR);
-
-done:
- RtlReleasePebLock();
- return (ULONG)reqsize;
}
@@ -1488,60 +1562,33 @@
*
* @implemented
*/
-ULONG NTAPI RtlGetFullPathName_U(
- const WCHAR* name,
- ULONG size,
- WCHAR* buffer,
- WCHAR** file_part)
-{
- WCHAR* ptr;
- ULONG dosdev;
- ULONG reqsize;
-
- DPRINT("RtlGetFullPathName_U(%S %lu %p %p)\n", name, size, buffer,
file_part);
-
- if (!name || !*name) return 0;
-
- /* Zero out the destination buffer (implies that "name" should be different
from "buffer" to get this function well-behaving) */
- RtlZeroMemory(buffer, size);
-
- if (file_part) *file_part = NULL;
-
- /* check for DOS device name */
- dosdev = RtlIsDosDeviceName_U((WCHAR*)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(RtlGetProcessHeap(), 0, reqsize);
- if (tmp == NULL) return 0;
- reqsize = get_full_path_helper(name, tmp, reqsize);
- if (reqsize + sizeof(WCHAR) > size) /* it may have worked the second time */
- {
- RtlFreeHeap(RtlGetProcessHeap(), 0, tmp);
- return reqsize + sizeof(WCHAR);
- }
- memcpy( buffer, tmp, reqsize + sizeof(WCHAR) );
- RtlFreeHeap(RtlGetProcessHeap(), 0, tmp);
- }
-
- /* find file part */
- if (file_part && (ptr = wcsrchr(buffer, '\\')) != NULL && ptr
>= buffer + 2 && *++ptr)
- *file_part = ptr;
- return reqsize;
+
+/*
+ * @implemented
+ */
+ULONG
+NTAPI
+RtlGetFullPathName_U(
+ _In_ PCWSTR FileName,
+ _In_ ULONG Size,
+ _Out_z_bytecap_(Size) PWSTR Buffer,
+ _Out_opt_ PWSTR *ShortName)
+{
+ NTSTATUS Status;
+ UNICODE_STRING FileNameString;
+ RTL_PATH_TYPE PathType;
+
+ /* Build the string */
+ Status = RtlInitUnicodeStringEx(&FileNameString, FileName);
+ if (!NT_SUCCESS(Status)) return 0;
+
+ /* Call the extended function */
+ return RtlGetFullPathName_Ustr(&FileNameString,
+ Size,
+ Buffer,
+ (PCWSTR*)ShortName,
+ NULL,
+ &PathType);
}
/*
@@ -1646,9 +1693,6 @@
PWCHAR NewBuffer, BufferStart;
PCWSTR p;
- /* Validate the input */
- if (!(Path) || !(FileName)) return 0;
-
/* Check if this is an absolute path */
if (RtlDetermineDosPathNameType_U(FileName) != RtlPathTypeRelative)
{
@@ -1668,7 +1712,7 @@
while (*p)
{
/* Looking for an extension */
- if (*p == '.')
+ if (*p == L'.')
{
/* No extension string needed -- it's part of the filename */
Extension = NULL;
@@ -1726,7 +1770,7 @@
if (*Path)
{
/* Loop as long as there's no semicolon */
- while (*Path != ';')
+ while (*Path != L';')
{
/* Copy the next character */
*BufferStart++ = *Path++;
@@ -1734,7 +1778,7 @@
}
/* We found a semi-colon, to stop path processing on this loop */
- if (*Path == ';') ++Path;
+ if (*Path == L';') ++Path;
}
/* Add a terminating slash if needed */
@@ -2054,7 +2098,7 @@
sizeof(StaticCandidateBuffer));
/* Initialize optional arguments */
- if (FullNameOut) *FullNameOut = NULL;
+ if (FullNameOut ) *FullNameOut = NULL;
if (FilePartSize) *FilePartSize = 0;
if (LengthNeeded) *LengthNeeded = 0;
if (DynamicString)
@@ -2449,7 +2493,7 @@
&StaticCandidateString,
Status);
}
- DPRINT("STatus: %lx BUFFER: %S\n", Status,
CallerBuffer->Buffer);
+ DPRINT("Status: %lx BUFFER: %S\n", Status,
CallerBuffer->Buffer);
}
else
{
@@ -2472,7 +2516,7 @@
FileNameString,
Status);
}
- DPRINT("STatus: %lx BUFFER: %S\n", Status,
CallerBuffer->Buffer);
+ DPRINT("Status: %lx BUFFER: %S\n", Status,
CallerBuffer->Buffer);
}
}
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hbelusca＠svn.reactos.org