729 lines
17 KiB
C
729 lines
17 KiB
C
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/* lfn.c -
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*
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* This file contains code that combines winnet long filename API's and
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* the DOS INT 21h API's into a single interface. Thus, other parts of
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* Winfile call a single piece of code with no worries about the
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* underlying interface.
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*/
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include "winfile.h"
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#include "object.h"
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#include "lfn.h" // lfn includes
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#include "dosfunc.h"
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#include "winnet.h"
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#include "wnetcaps.h" // WNetGetCaps()
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#include "wfcopy.h"
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BOOL APIENTRY IsFATName(LPSTR pName);
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#define CDRIVEMAX 26
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#define BUFSIZE 2048 // ff/fn buffer size
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#define MAXFILES 1024
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/* this is the internal buffer maintained for ff/fn operations
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*/
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typedef struct _find {
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HANDLE hDir; // search handle
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WORD cbBuffer; // buffer size
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WORD nEntriesLeft; // remaining entries
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WORD ibEntry; // offset of next entry to return
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FILEFINDBUF2 rgFindBuf[1]; // array of find entries
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} FIND, * LPFIND;
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/* this structure contains an array of drives types (ie, unknown, FAT, LFN)
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* and a pointer to each of the driver functions. It is declared this way
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* in order to get function prototypes.
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*/
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typedef struct _lfninfo {
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UINT hDriver;
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INT rgVolType[CDRIVEMAX];
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FARPROC lpfnQueryAbort;
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WORD ( APIENTRY *lpFindFirst)(LPSTR,WORD,LPINT,LPINT,WORD,PFILEFINDBUF2);
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WORD ( APIENTRY *lpFindNext)(HANDLE,LPINT,WORD,PFILEFINDBUF2);
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WORD ( APIENTRY *lpFindClose)(HANDLE);
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WORD ( APIENTRY *lpGetAttribute)(LPSTR,LPINT);
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WORD ( APIENTRY *lpSetAttribute)(LPSTR,WORD);
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WORD ( APIENTRY *lpCopy)(LPSTR,LPSTR,PQUERYPROC);
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WORD ( APIENTRY *lpMove)(LPSTR,LPSTR);
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WORD ( APIENTRY *lpDelete)(LPSTR);
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WORD ( APIENTRY *lpMKDir)(LPSTR);
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WORD ( APIENTRY *lpRMDir)(LPSTR);
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WORD ( APIENTRY *lpGetVolumeLabel)(WORD,LPSTR);
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WORD ( APIENTRY *lpSetVolumeLabel)(WORD,LPSTR);
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WORD ( APIENTRY *lpParse)(LPSTR,LPSTR,LPSTR);
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WORD ( APIENTRY *lpVolumeType)(WORD,LPINT);
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} LFNINFO, * PLFNINFO;
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/* pointer to lfn information, so we don't take up a lot of space on a
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* nonlfn system
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*/
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PLFNINFO pLFN = NULL;
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VOID HandleSymbolicLink(HANDLE DirectoryHandle, PCHAR ObjectName);
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/* WFFindFirst -
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*
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* returns:
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* TRUE for success - lpFind->fd,hFindFileset,attrFilter set.
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* FALSE for failure
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*
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* Performs the FindFirst operation and the first WFFindNext.
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*/
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BOOL
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APIENTRY
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WFFindFirst(
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LPLFNDTA lpFind,
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LPSTR lpName,
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DWORD dwAttrFilter
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)
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{
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// We OR these additional bits because of the way DosFindFirst works
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// in Windows. It returns the files that are specified by the attrfilter
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// and ORDINARY files too.
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#define BUFFERSIZE 1024
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#define Error(N,S) { \
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DbgPrint(#N); \
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DbgPrint(" Error %08lX\n", S); \
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}
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CHAR Buffer[BUFFERSIZE];
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NTSTATUS Status;
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HANDLE DirectoryHandle;
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ULONG Context = 0;
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ULONG ReturnedLength;
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POBJECT_DIRECTORY_INFORMATION DirInfo;
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POBJECT_NAME_INFORMATION NameInfo;
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INT length;
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lpFind->hFindFile = INVALID_HANDLE_VALUE;
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//DbgPrint("Find first : <%s>\n", lpName);
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// Remove drive letter
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while ((*lpName != 0) && (*lpName != '\\')) {
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lpName ++;
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}
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strcpy(Buffer, lpName);
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length = strlen(Buffer);
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length -= 4; // Remove '\'*.*
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if (length == 0) {
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length = 1; // Replace the '\'
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}
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Buffer[length] = 0; // Truncate the string at the appropriate point
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//DbgPrint("Find first modified : <%s>\n\r", Buffer);
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#define NEW
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#ifdef NEW
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//
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// Open the directory for list directory access
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//
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{
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OBJECT_ATTRIBUTES Attributes;
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ANSI_STRING DirectoryName;
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UNICODE_STRING UnicodeString;
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RtlInitAnsiString(&DirectoryName, Buffer);
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Status = RtlAnsiStringToUnicodeString( &UnicodeString,
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&DirectoryName,
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TRUE );
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ASSERT( NT_SUCCESS( Status ) );
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InitializeObjectAttributes( &Attributes,
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&UnicodeString,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL );
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if (!NT_SUCCESS( Status = NtOpenDirectoryObject( &DirectoryHandle,
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STANDARD_RIGHTS_READ |
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DIRECTORY_QUERY |
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DIRECTORY_TRAVERSE,
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&Attributes ) )) {
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RtlFreeUnicodeString(&UnicodeString);
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if (Status == STATUS_OBJECT_TYPE_MISMATCH) {
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DbgPrint("%Z is not a valid Object Directory Object name\n",
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&DirectoryName );
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} else {
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DbgPrint("%Z - ", &DirectoryName );
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Error( OpenDirectory, Status );
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}
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return FALSE;
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}
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RtlFreeUnicodeString(&UnicodeString);
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}
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Status = NtQueryDirectoryObject( DirectoryHandle,
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&Buffer,
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BUFFERSIZE,
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TRUE,
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TRUE,
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&Context,
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&ReturnedLength );
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if (!NT_SUCCESS( Status )) {
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Error(Find_First_QueryDirectory, Status);
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return (FALSE);
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}
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//
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// For every record in the buffer type out the directory information
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//
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//
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// Point to the first record in the buffer, we are guaranteed to have
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// one otherwise Status would have been No More Files
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//
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DirInfo = (POBJECT_DIRECTORY_INFORMATION) &Buffer[0];
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//
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// Check if there is another record. If there isn't, then get out
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// of the loop now
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//
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if (DirInfo->Name.Length == 0) {
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DbgPrint("FindFirst - name length = 0\n\r");
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return (FALSE);
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}
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{
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ANSI_STRING AnsiString;
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AnsiString.Buffer = lpFind->fd.cFileName;
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AnsiString.MaximumLength = sizeof(lpFind->fd.cFileName);
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Status = RtlUnicodeStringToAnsiString(&AnsiString, &(DirInfo->Name), FALSE);
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ASSERT(NT_SUCCESS(Status));
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}
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//DbgPrint("FindFirst returning <%s>\n\r", lpFind->fd.cFileName);
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// Calculate the attribute field
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lpFind->fd.dwFileAttributes = CalcAttributes(&DirInfo->TypeName);
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#ifdef LATER
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if (lpFind->fd.dwFileAttributes == ATTR_SYMLINK) {
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HandleSymbolicLink(DirectoryHandle, lpFind->fd.cFileName);
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}
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// Label an unknown object type
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if (lpFind->fd.dwFileAttributes == 0) { // Unknown type
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strncat(lpFind->fd.cFileName, " (", MAX_PATH - strlen(lpFind->fd.cFileName));
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strncat(lpFind->fd.cFileName, DirInfo->TypeName.Buffer,
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MAX_PATH - strlen(lpFind->fd.cFileName));
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strncat(lpFind->fd.cFileName, ")", MAX_PATH - strlen(lpFind->fd.cFileName));
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}
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#endif
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// Save our search context
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lpFind->hFindFile = DirectoryHandle;
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lpFind->err = Context;
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return (TRUE);
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#else
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dwAttrFilter |= ATTR_ARCHIVE | ATTR_READONLY | ATTR_NORMAL;
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lpFind->hFindFile = FindFirstFile(lpName, &lpFind->fd);
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if (lpFind->hFindFile != (HANDLE)0xFFFFFFFF) {
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lpFind->dwAttrFilter = dwAttrFilter;
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if ((~dwAttrFilter & lpFind->fd.dwFileAttributes) == 0L ||
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WFFindNext(lpFind)) {
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PRINT(BF_PARMTRACE, "WFFindFirst:%s", &lpFind->fd.cFileName);
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return (TRUE);
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} else {
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lpFind->err = GetLastError();
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WFFindClose(lpFind);
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return (FALSE);
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}
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} else {
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return (FALSE);
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}
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#endif
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}
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/* WFFindNext -
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*
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* Performs a single file FindNext operation. Only returns TRUE if a
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* file matching the dwAttrFilter is found. On failure WFFindClose is
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* called.
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*/
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BOOL
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APIENTRY
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WFFindNext(
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LPLFNDTA lpFind
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)
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{
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CHAR Buffer[BUFFERSIZE];
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NTSTATUS Status;
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HANDLE DirectoryHandle = lpFind->hFindFile;
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ULONG Context = lpFind->err;
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ULONG ReturnedLength;
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POBJECT_DIRECTORY_INFORMATION DirInfo;
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POBJECT_NAME_INFORMATION NameInfo;
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#ifdef NEW
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//ASSERT(lpFind->hFindFile != (HANDLE)0xFFFFFFFF);
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Status = NtQueryDirectoryObject( DirectoryHandle,
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&Buffer,
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BUFFERSIZE,
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TRUE,
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FALSE,
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&Context,
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&ReturnedLength );
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if (!NT_SUCCESS( Status )) {
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if (Status != STATUS_NO_MORE_ENTRIES) {
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Error(FindNext_QueryDirectory, Status);
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}
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return (FALSE);
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}
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//
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// For every record in the buffer type out the directory information
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//
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//
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// Point to the first record in the buffer, we are guaranteed to have
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// one otherwise Status would have been No More Files
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//
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DirInfo = (POBJECT_DIRECTORY_INFORMATION) &Buffer[0];
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//
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// Check if there is another record. If there isn't, then get out
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// of the loop now
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//
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if (DirInfo->Name.Length == 0) {
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DbgPrint("FindNext - name length = 0\n\r");
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return (FALSE);
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}
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{
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ANSI_STRING AnsiString;
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AnsiString.Buffer = lpFind->fd.cFileName;
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AnsiString.MaximumLength = sizeof(lpFind->fd.cFileName);
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Status = RtlUnicodeStringToAnsiString(&AnsiString, &(DirInfo->Name), FALSE);
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ASSERT(NT_SUCCESS(Status));
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}
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//DbgPrint("FindNext returning <%s>\n\r", lpFind->fd.cFileName);
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// Calculate the attribute field
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lpFind->fd.dwFileAttributes = CalcAttributes(&DirInfo->TypeName);
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#ifdef LATER
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if (lpFind->fd.dwFileAttributes == ATTR_SYMLINK) {
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HandleSymbolicLink(DirectoryHandle, lpFind->fd.cFileName);
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}
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// Label an unknown object type
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if (lpFind->fd.dwFileAttributes == 0) { // Unknown type
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strncat(lpFind->fd.cFileName, " (", MAX_PATH - strlen(lpFind->fd.cFileName));
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strncat(lpFind->fd.cFileName, DirInfo->TypeName.Buffer,
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MAX_PATH - strlen(lpFind->fd.cFileName));
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strncat(lpFind->fd.cFileName, ")", MAX_PATH - strlen(lpFind->fd.cFileName));
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}
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#endif
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// Save our search context
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lpFind->err = Context;
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return (TRUE);
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#else
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#ifdef DBG
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if (lpFind->hFindFile == (HANDLE)0xFFFFFFFF) {
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DebugBreak();
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return (FALSE);
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}
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#endif
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while (FindNextFile(lpFind->hFindFile, &lpFind->fd)) {
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if ((lpFind->fd.dwFileAttributes & ~lpFind->dwAttrFilter) != 0)
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continue; // only pick files that fit attr filter
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PRINT(BF_PARMTRACE, "WFFindNext:%s", &lpFind->fd.cFileName);
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return (TRUE);
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}
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lpFind->err = GetLastError();
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return (FALSE);
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#endif
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}
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/* WFFindClose -
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*
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* performs the find close operation
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*/
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BOOL
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APIENTRY
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WFFindClose(
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LPLFNDTA lpFind
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)
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{
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HANDLE DirectoryHandle = lpFind->hFindFile;
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BOOL bRet;
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#ifdef NEW
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if (lpFind->hFindFile != INVALID_HANDLE_VALUE) {
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(VOID) NtClose( DirectoryHandle );
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lpFind->hFindFile = INVALID_HANDLE_VALUE;
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}
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return (TRUE);
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#else
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ENTER("WFFindClose");
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// ASSERT(lpFind->hFindFile != (HANDLE)0xFFFFFFFF);
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#ifdef DBG
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if (lpFind->hFindFile == (HANDLE)0xFFFFFFFF) {
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PRINT(BF_PARMTRACE, "WFFindClose:Invalid hFindFile = 0xFFFFFFFF","");
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return (FALSE);
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}
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#endif
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bRet = FindClose(lpFind->hFindFile);
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#ifdef DBG
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lpFind->hFindFile = (HANDLE)0xFFFFFFFF;
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#endif
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LEAVE("WFFindClose");
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return (bRet);
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#endif
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}
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VOID
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HandleSymbolicLink(
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HANDLE DirectoryHandle,
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PCHAR ObjectName
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) // Assumes this points at a MAX_PATH length buffer
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{
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NTSTATUS Status;
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OBJECT_ATTRIBUTES Object_Attributes;
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HANDLE LinkHandle;
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STRING String;
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WCHAR UnicodeBuffer[MAX_PATH];
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UNICODE_STRING UnicodeString;
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INT Length;
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RtlInitString(&String, ObjectName);
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Status = RtlAnsiStringToUnicodeString( &UnicodeString,
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&String,
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TRUE );
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ASSERT( NT_SUCCESS( Status ) );
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InitializeObjectAttributes(&Object_Attributes,
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&UnicodeString,
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0,
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DirectoryHandle,
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NULL
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);
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// Open the given symbolic link object
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Status = NtOpenSymbolicLinkObject(&LinkHandle,
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GENERIC_ALL,
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&Object_Attributes);
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RtlFreeUnicodeString(&UnicodeString);
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if (!NT_SUCCESS(Status)) {
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DbgPrint("HandleSymbolicLink : open symbolic link failed, status = %lx\n\r", Status);
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return;
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}
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strcat(ObjectName, " => ");
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Length = strlen(ObjectName);
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// Set up our String variable to point at the remains of the object name buffer
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String.Length = 0;
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String.MaximumLength = (USHORT)(MAX_PATH - Length);
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String.Buffer = &(ObjectName[Length]);
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// Go get the target of the symbolic link
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UnicodeString.Buffer = UnicodeBuffer;
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UnicodeString.MaximumLength = sizeof(UnicodeBuffer);
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Status = NtQuerySymbolicLinkObject(LinkHandle, &UnicodeString, NULL);
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NtClose(LinkHandle);
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if (!NT_SUCCESS(Status)) {
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DbgPrint("HandleSymbolicLink : query symbolic link failed, status = %lx\n\r", Status);
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return;
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}
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// Copy the symbolic target into return buffer
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Status = RtlUnicodeStringToAnsiString(&String, &UnicodeString, FALSE);
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ASSERT(NT_SUCCESS(Status));
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// Add NULL terminator
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String.Buffer[String.Length] = 0;
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return;
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}
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/* WFIsDir
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*
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* Determines if the specified path is a directory
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*/
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BOOL
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APIENTRY
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WFIsDir(
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LPSTR lpDir
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)
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{
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DWORD attr = GetFileAttributes(lpDir);
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if (attr & 0x8000) // BUG: what is this constant???
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return FALSE;
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if (attr & ATTR_DIR)
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return TRUE;
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return FALSE;
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}
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/* LFNQueryAbort -
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*
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* wraps around WFQueryAbort and is exported/makeprocinstanced
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*/
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BOOL
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APIENTRY
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LFNQueryAbort(
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VOID
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)
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{
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return WFQueryAbort();
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}
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/* LFNInit -
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*
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* Initializes stuff for LFN access
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*/
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VOID
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APIENTRY
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LFNInit()
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{
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INT i;
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/* find out if long names are supported.
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*/
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if (!(WNetGetCaps(WNNC_ADMIN) & WNNC_ADM_LONGNAMES))
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return;
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/* get the buffer
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*/
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pLFN = (PLFNINFO)LocalAlloc(LPTR,sizeof(LFNINFO));
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if (!pLFN)
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return;
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/* get the handle to the driver
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*/
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if (!(pLFN->hDriver = WNetGetCaps((WORD)0xFFFF))) {
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LocalFree((HANDLE)pLFN);
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pLFN = NULL;
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return;
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}
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/* set all the volume types to unknown
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*/
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for (i = 0; i < CDRIVEMAX; i++) {
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pLFN->rgVolType[i] = -1;
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}
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}
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/* GetNameType -
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*
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* Shell around LFNParse. Classifies name.
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*
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* NOTE: this should work on unqualified names. currently this isn't
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* very useful.
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*/
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WORD
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APIENTRY
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GetNameType(
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LPSTR lpName
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)
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{
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if (*(lpName+1) == ':') {
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if (!IsLFNDrive(lpName))
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return FILE_83_CI;
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} else if (IsFATName(lpName))
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return FILE_83_CI;
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return (FILE_LONG);
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}
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|
|
BOOL
|
|
APIENTRY
|
|
IsFATName(
|
|
LPSTR pName
|
|
)
|
|
{
|
|
INT cdots = 0;
|
|
INT cb;
|
|
INT i;
|
|
INT iFirstDot;
|
|
|
|
|
|
cb = lstrlen(pName);
|
|
if (cb > 12) {
|
|
return FALSE;
|
|
} else {
|
|
for (i = 0; i < cb; i++) {
|
|
if (pName[i] == '.') {
|
|
iFirstDot = cdots ? iFirstDot : i;
|
|
cdots++;
|
|
}
|
|
}
|
|
|
|
if (cdots == 0 && cb <= 8)
|
|
return TRUE;
|
|
else if (cdots != 1)
|
|
return FALSE;
|
|
else if (cdots == 1 && iFirstDot > 8)
|
|
return FALSE;
|
|
else
|
|
return TRUE;
|
|
}
|
|
|
|
}
|
|
|
|
BOOL
|
|
APIENTRY
|
|
IsLFN(
|
|
LPSTR pName
|
|
)
|
|
{
|
|
return !IsFATName(pName);
|
|
}
|
|
|
|
BOOL
|
|
APIENTRY
|
|
LFNMergePath(
|
|
LPSTR pTo,
|
|
LPSTR pFrom
|
|
)
|
|
{
|
|
PRINT(BF_PARMTRACE, "LFNMergePath:basically a NOP", "");
|
|
pTo; pFrom;
|
|
return (FALSE);
|
|
}
|
|
|
|
/* InvalidateVolTypes -
|
|
*
|
|
* This function sets all drive types to unknown. It should be called
|
|
* whenever the drive list is refreshed.
|
|
*/
|
|
|
|
VOID
|
|
APIENTRY
|
|
InvalidateVolTypes( VOID )
|
|
{
|
|
INT i;
|
|
|
|
if (!pLFN)
|
|
return;
|
|
|
|
for (i = 0; i < CDRIVEMAX; i++)
|
|
pLFN->rgVolType[i] = -1;
|
|
}
|
|
|
|
|
|
/* WFCopy
|
|
*
|
|
* Copies files
|
|
*/
|
|
WORD
|
|
APIENTRY
|
|
WFCopy(
|
|
PSTR pszFrom,
|
|
PSTR pszTo
|
|
)
|
|
{
|
|
WORD wRet;
|
|
|
|
Notify(hdlgProgress, IDS_COPYINGMSG, pszFrom, pszTo);
|
|
|
|
wRet = FileCopy(pszFrom,pszTo);
|
|
|
|
if (!wRet)
|
|
ChangeFileSystem(FSC_CREATE,pszTo,NULL);
|
|
|
|
return wRet;
|
|
}
|
|
|
|
/* WFRemove
|
|
*
|
|
* Deletes files
|
|
*/
|
|
WORD
|
|
APIENTRY
|
|
WFRemove(
|
|
PSTR pszFile
|
|
)
|
|
{
|
|
WORD wRet;
|
|
|
|
wRet = FileRemove(pszFile);
|
|
if (!wRet)
|
|
ChangeFileSystem(FSC_DELETE,pszFile,NULL);
|
|
|
|
return wRet;
|
|
}
|
|
|
|
/* WFMove
|
|
*
|
|
* Moves files on a volume
|
|
*/
|
|
WORD
|
|
APIENTRY
|
|
WFMove(
|
|
PSTR pszFrom,
|
|
PSTR pszTo
|
|
)
|
|
{
|
|
WORD wRet;
|
|
|
|
wRet = FileMove(pszFrom,pszTo);
|
|
if (!wRet)
|
|
ChangeFileSystem(FSC_RENAME,pszFrom,pszTo);
|
|
|
|
return wRet;
|
|
}
|