389 lines
12 KiB
C++
389 lines
12 KiB
C++
//+--------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992-1996
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//
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// File: ntprop.cxx
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//
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// Contents: OLE Appendix B property set support.
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//
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//
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//---------------------------------------------------------------------------
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#include "pch.cxx"
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#define CCH_MAP (1 << CBIT_CHARMASK) // 32
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#define CHARMASK (CCH_MAP - 1) // 0x1f
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// we use static array instead of string literals because some systems
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// have 4 bytes string literals, and would not produce the correct result
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// for REF's 2 byte Unicode convention
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//
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OLECHAR aocMap[CCH_MAP + 1] = {'a','b','c','d','e','f','g',
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'h','i','j','k','l','m','n',
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'o','p','q','r','s','t','u',
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'v','w','x','y','z',
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'0','1','2','3','4','5','\0'};
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#define CALPHACHARS (1 + (OLECHAR)'z' - (OLECHAR)'a')
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GUID guidSummary =
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{ 0xf29f85e0,
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0x4ff9, 0x1068,
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{ 0xab, 0x91, 0x08, 0x00, 0x2b, 0x27, 0xb3, 0xd9 } };
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OLECHAR oszSummary[] = {'S','u','m','m','a','r','y',
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'I','n','f','o','r','m','a','t','i','o','n','\0'};
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GUID guidDocumentSummary =
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{ 0xd5cdd502,
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0x2e9c, 0x101b,
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{ 0x93, 0x97, 0x08, 0x00, 0x2b, 0x2c, 0xf9, 0xae } };
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OLECHAR oszDocumentSummary[] = {'D','o','c','u','m','e','n','t',
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'S','u','m','m','a','r','y',
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'I','n','f','o','r','m','a','t','i','o','n',
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'\0'};
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// Note that user defined properties are placed in section 2 with the below
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// GUID as the FMTID -- alas, we did not expect Office95 to actually use it.
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GUID guidDocumentSummarySection2 =
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{ 0xd5cdd505,
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0x2e9c, 0x101b,
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{ 0x93, 0x97, 0x08, 0x00, 0x2b, 0x2c, 0xf9, 0xae } };
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// *Global Info*
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OLECHAR oszGlobalInfo[] = {'G','l','o','b','a','l',' ','I','n','f','o','\0'};
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GUID guidGlobalInfo =
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{ 0x56616F00,
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0xC154, 0x11ce,
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{ 0x85, 0x53, 0x00, 0xAA, 0x00, 0xA1, 0xF9, 0x5B } };
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// *Image Contents*
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OLECHAR oszImageContents[] = {'I','m','a','g','e',' ',
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'C','o','n','t','e','n','t','s','\0'};
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GUID guidImageContents =
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{ 0x56616500,
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0xC154, 0x11ce,
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{ 0x85, 0x53, 0x00, 0xAA, 0x00, 0xA1, 0xF9, 0x5B } };
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// *Image Info*
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OLECHAR oszImageInfo[] = {'I','m','a','g','e',' ','I','n','f','o'};
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GUID guidImageInfo =
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{ 0x56616500,
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0xC154, 0x11ce,
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{ 0x85, 0x53, 0x00, 0xAA, 0x00, 0xA1, 0xF9, 0x5B } };
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__inline OLECHAR
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MapChar(IN ULONG i)
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{
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return((OLECHAR) aocMap[i & CHARMASK]);
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}
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//+--------------------------------------------------------------------------
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// Function: RtlGuidToPropertySetName
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//
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// Synopsis: Map property set GUID to null-terminated UNICODE name string.
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//
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// The awcname parameter is assumed to be a buffer with room for
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// CWC_PROPSETSZ (28) UNICODE characters. The first character
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// is always WC_PROPSET0 (0x05), as specified by the OLE Appendix
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// B documentation. The colon character normally used as an NT
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// stream name separator is not written to the caller's buffer.
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//
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// No error is possible.
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//
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// Arguments: IN GUID *pguid -- pointer to GUID to convert
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// OUT OLECHAR aocname[] -- output string buffer
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//
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// Returns: count of non-NULL characters in the output string buffer
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//---------------------------------------------------------------------------
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ULONG PROPSYSAPI PROPAPI
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RtlGuidToPropertySetName(
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IN GUID const *pguid,
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OUT OLECHAR aocname[])
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{
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ULONG cbitRemain = CBIT_BYTE;
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OLECHAR *poc = aocname;
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#ifdef BIGENDIAN // since we go thru it byte by byte
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GUID guidSwapped = *pguid; // we have to swap it for big endian
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ByteSwap(&guidSwapped);
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BYTE *pb = (BYTE *) &guidSwapped;
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#else
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BYTE *pb = (BYTE *) pguid;
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#endif
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BYTE *pbEnd = pb + sizeof(GUID);
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*poc++ = OC_PROPSET0;
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// -----------------------
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// Check for special-cases
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// -----------------------
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// Note: CCH_PROPSET includes the OC_PROPSET0, and sizeof(osz...)
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// includes the trailing '\0', so sizeof(osz...) is ok because the
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// OC_PROPSET0 character compensates for the trailing NULL character.
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// Is this the SummaryInformation propset?
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PROPASSERT(CCH_PROPSET >= sizeof(oszSummary)/sizeof(OLECHAR));
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if (*pguid == guidSummary)
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{
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RtlCopyMemory(poc, oszSummary, sizeof(oszSummary));
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return(sizeof(oszSummary)/sizeof(OLECHAR));
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}
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// Is this The DocumentSummaryInformation or User-Defined propset?
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PROPASSERT(CCH_PROPSET >= sizeof(oszDocumentSummary)/sizeof(OLECHAR));
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if (*pguid == guidDocumentSummary || *pguid == guidDocumentSummarySection2)
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{
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RtlCopyMemory(poc, oszDocumentSummary, sizeof(oszDocumentSummary));
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return(sizeof(oszDocumentSummary)/sizeof(OLECHAR));
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}
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// Is this the Global Info propset?
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PROPASSERT(CCH_PROPSET >= sizeof(oszGlobalInfo)/sizeof(OLECHAR));
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if (*pguid == guidGlobalInfo)
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{
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RtlCopyMemory(poc, oszGlobalInfo, sizeof(oszGlobalInfo));
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return(sizeof(oszGlobalInfo)/sizeof(OLECHAR));
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}
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// Is this the Image Contents propset?
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PROPASSERT(CCH_PROPSET >= sizeof(oszImageContents)/sizeof(OLECHAR));
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if (*pguid == guidImageContents)
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{
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RtlCopyMemory(poc, oszImageContents, sizeof(oszImageContents));
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return(sizeof(oszImageContents)/sizeof(OLECHAR));
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}
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// Is this the Image Info propset?
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PROPASSERT(CCH_PROPSET >= sizeof(oszImageInfo)/sizeof(OLECHAR));
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if (*pguid == guidImageInfo)
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{
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RtlCopyMemory(poc, oszImageInfo, sizeof(oszImageInfo));
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return(sizeof(oszImageInfo)/sizeof(OLECHAR));
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}
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// ------------------------------
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// Calculate the string-ized GUID
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// ------------------------------
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// If this is a big-endian system, we need to convert
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// the GUID to little-endian for the conversion.
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#if BIGENDIAN
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GUID guidByteSwapped = *pguid;
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PropByteSwap( &guidByteSwapped );
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pguid = &guidByteSwapped;
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#endif
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// Point to the beginning and ending of the GUID
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pb = (BYTE*) pguid;
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pbEnd = pb + sizeof(*pguid);
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// Walk 'pb' through each byte of the GUID.
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while (pb < pbEnd)
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{
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ULONG i = *pb >> (CBIT_BYTE - cbitRemain);
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if (cbitRemain >= CBIT_CHARMASK)
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{
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*poc = MapChar(i);
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if (cbitRemain == CBIT_BYTE && *poc >= (OLECHAR)'a'
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&& *poc <= ((OLECHAR)'z'))
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{
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*poc += (OLECHAR) ( ((OLECHAR)'A') - ((OLECHAR)'a') );
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}
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poc++;
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cbitRemain -= CBIT_CHARMASK;
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if (cbitRemain == 0)
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{
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pb++;
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cbitRemain = CBIT_BYTE;
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}
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}
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else
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{
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if (++pb < pbEnd)
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{
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i |= *pb << cbitRemain;
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}
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*poc++ = MapChar(i);
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cbitRemain += CBIT_BYTE - CBIT_CHARMASK;
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}
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}
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*poc = 0;
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return(CCH_PROPSET);
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}
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//+--------------------------------------------------------------------------
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// Function: RtlPropertySetNameToGuid
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//
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// Synopsis: Map non null-terminated UNICODE string to a property set GUID.
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//
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// If the name is not properly formed as per
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// RtlGuidToPropertySetName(), STATUS_INVALID_PARAMETER is
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// returned. The pguid parameter is assumed to point to a buffer
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// with room for a GUID structure.
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//
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// Arguments: IN ULONG cocname -- count of OLECHARs in string to convert
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// IN OLECHAR aocname[] -- input string to convert
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// OUT GUID *pguid -- pointer to buffer for converted GUID
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//
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// Returns: NTSTATUS
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//---------------------------------------------------------------------------
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NTSTATUS PROPSYSAPI PROPAPI
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RtlPropertySetNameToGuid(
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IN ULONG cocname,
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IN OLECHAR const aocname[],
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OUT GUID *pguid)
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{
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NTSTATUS Status = STATUS_INVALID_PARAMETER;
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OLECHAR const *poc = aocname;
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if (poc[0] == OC_PROPSET0)
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{
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// -----------------------
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// Check for Special-Cases
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// -----------------------
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// Note: cocname includes the OC_PROPSET0, and sizeof(osz...)
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// includes the trailing OLESTR('\0'), but the comparison excludes both
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// the leading OC_PROPSET0 and the trailing '\0'.
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// Is this SummaryInformation?
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if (cocname == sizeof(oszSummary)/sizeof(OLECHAR) &&
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ocsnicmp(&poc[1], oszSummary, cocname - 1) == 0)
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{
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*pguid = guidSummary;
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return(STATUS_SUCCESS);
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}
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// Is this DocumentSummaryInformation?
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if (cocname == sizeof(oszDocumentSummary)/sizeof(OLECHAR) &&
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ocsnicmp(&poc[1], oszDocumentSummary, cocname - 1) == 0)
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{
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*pguid = guidDocumentSummary;
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return(STATUS_SUCCESS);
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}
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// Is this Global Info?
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if (cocname == sizeof(oszGlobalInfo)/sizeof(OLECHAR) &&
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ocsnicmp(&poc[1], oszGlobalInfo, cocname - 1) == 0)
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{
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*pguid = guidGlobalInfo;
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return(STATUS_SUCCESS);
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}
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// Is this Image Info?
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if (cocname == sizeof(oszImageInfo)/sizeof(OLECHAR) &&
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ocsnicmp(&poc[1], oszImageInfo, cocname - 1) == 0)
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{
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*pguid = guidImageInfo;
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return(STATUS_SUCCESS);
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}
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// Is this Image Contents?
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if (cocname == sizeof(oszImageContents)/sizeof(OLECHAR) &&
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ocsnicmp(&poc[1], oszImageContents, cocname - 1) == 0)
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{
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*pguid = guidImageContents;
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return(STATUS_SUCCESS);
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}
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// ------------------
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// Calculate the GUID
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// ------------------
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// None of the special-cases hit, so we must calculate
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// the GUID from the name.
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if (cocname == CCH_PROPSET)
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{
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ULONG cbit;
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BYTE *pb = (BYTE *) pguid - 1;
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RtlZeroMemory(pguid, sizeof(*pguid));
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for (cbit = 0; cbit < CBIT_GUID; cbit += CBIT_CHARMASK)
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{
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ULONG cbitUsed = cbit % CBIT_BYTE;
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ULONG cbitStored;
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OLECHAR oc;
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if (cbitUsed == 0)
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{
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pb++;
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}
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oc = *++poc - (OLECHAR)'A'; // assume upper case
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// for wchar (unsigned) -ve values becomes a large number
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// but for char, which is signed, -ve is -ve
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if (oc > CALPHACHARS || oc < 0)
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{
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// oops, try lower case
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oc += (OLECHAR) ( ((OLECHAR)'A') - ((OLECHAR)'a'));
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if (oc > CALPHACHARS || oc < 0)
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{
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// must be a digit
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oc += ((OLECHAR)'a') - ((OLECHAR)'0') + CALPHACHARS;
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if (oc > CHARMASK)
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{
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goto fail; // invalid character
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}
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}
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}
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*pb |= (BYTE) (oc << cbitUsed);
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cbitStored = min(CBIT_BYTE - cbitUsed, CBIT_CHARMASK);
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// If the translated bits wouldn't all fit in the current byte
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if (cbitStored < CBIT_CHARMASK)
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{
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oc >>= CBIT_BYTE - cbitUsed;
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if (cbit + cbitStored == CBIT_GUID)
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{
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if (oc != 0)
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{
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goto fail; // extra bits
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}
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break;
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}
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pb++;
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*pb |= (BYTE) oc;
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}
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}
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Status = STATUS_SUCCESS;
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}
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}
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#ifdef BIGENDIAN
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ByteSwap(pguid); // on big endian, we will generate a guid
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// with the wrong byteorder, so we have to
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// swap it
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#endif
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return(Status);
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fail:
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return(Status);
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}
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