118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
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//+----------------------------------------------------------------------------
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//
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// Copyright (C) 1996, Microsoft Corporation
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//
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// File: ftdfs.c
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//
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// Contents: Support for ftdfs resolution
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//
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// Classes: None
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//
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// Functions:
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//
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//-----------------------------------------------------------------------------
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#define Dbg DEBUG_TRACE_ROOT_EXPANSION
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#include "dfsprocs.h"
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#include "ftdfs.h"
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#include "know.h"
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text( PAGE, DfspParsePath )
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#endif // ALLOC_PRAGMA
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//+----------------------------------------------------------------------------
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//
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// Function: DfspParsePrefix
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//
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// Synopsis: Helper routine to break a path into domain, share, remainder
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//
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// Arguments: [Path] -- PUNICODE string of path to parse
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//
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// Returns: [DomainName] -- UNICODE_STRING containing DomainName, if present
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// [ShareName] -- UNICODE_STRING containing ShareName, if present
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// [Remainder] -- UNICODE_STRING containing remainder of Path
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//
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//-----------------------------------------------------------------------------
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VOID
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DfspParsePath(
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PUNICODE_STRING PathName,
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PUNICODE_STRING DomainName,
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PUNICODE_STRING ShareName,
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PUNICODE_STRING Remainder)
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{
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LPWSTR ustrp, ustart, uend;
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DebugTrace(+1, Dbg, "DfspParsePath(%wZ)\n", PathName);
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RtlInitUnicodeString(DomainName, NULL);
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RtlInitUnicodeString(ShareName, NULL);
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RtlInitUnicodeString(Remainder, NULL);
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// Be sure there's something to do
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if (PathName->Length == 0) {
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DebugTrace(-1, Dbg, "PathName is empty\n",0 );
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return;
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}
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// Skip leading '\'s
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ustart = ustrp = PathName->Buffer;
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uend = &PathName->Buffer[PathName->Length / sizeof(WCHAR)] - 1;
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// strip trailing nulls
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while (uend >= ustart && *uend == UNICODE_NULL)
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uend--;
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while (ustrp <= uend && *ustrp == UNICODE_PATH_SEP)
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ustrp++;
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// DomainName
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ustart = ustrp;
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while (ustrp <= uend && *ustrp != UNICODE_PATH_SEP)
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ustrp++;
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if (ustrp != ustart) {
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DomainName->Buffer = ustart;
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DomainName->Length = (USHORT)((ustrp - ustart)) * sizeof(WCHAR);
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DomainName->MaximumLength = DomainName->Length;
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// ShareName
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ustart = ++ustrp;
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while (ustrp <= uend && *ustrp != UNICODE_PATH_SEP)
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ustrp++;
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if (ustrp != ustart) {
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ShareName->Buffer = ustart;
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ShareName->Length = (USHORT)((ustrp - ustart)) * sizeof(WCHAR);
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ShareName->MaximumLength = ShareName->Length;
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// Remainder is whatever's left
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ustart = ++ustrp;
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while (ustrp <= uend)
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ustrp++;
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if (ustrp != ustart) {
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Remainder->Buffer = ustart;
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Remainder->Length = (USHORT)((ustrp - ustart)) * sizeof(WCHAR);
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Remainder->MaximumLength = Remainder->Length;
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}
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}
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}
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DebugTrace( 0, Dbg, "DfspParsePath: DomainName -> %wZ\n", DomainName);
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DebugTrace( 0, Dbg, " ShareName -> %wZ\n", ShareName);
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DebugTrace(-1, Dbg, " Remainder -> %wZ\n", Remainder);
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}
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