171 lines
4.4 KiB
C
171 lines
4.4 KiB
C
/*++
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Copyright (c) 1991-1992 Microsoft Corporation
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Module Name:
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ValidSmb.c
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Abstract:
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This module contains RapIsValidDescriptorSmb, which tests a descriptor to
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make sure it is a valid descriptor which can be placed in an SMB..
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Author:
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John Rogers (JohnRo) 17-Apr-1991
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Environment:
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Portable to any flat, 32-bit environment. (Uses Win32 typedefs.)
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Requires ANSI C extensions: slash-slash comments, long external names.
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Revision History:
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17-Apr-1991 JohnRo
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Created.
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03-Jun-1991 JohnRo
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PC-LINT found a bug.
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19-Aug-1991 JohnRo
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Allow UNICODE use.
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Avoid FORMAT_POINTER equate (nonportable).
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16-Aug-1992 JohnRo
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RAID 2920: Support UTC timezone in net code.
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Use PREFIX_ equates.
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--*/
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// These must be included first:
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#include <windef.h> // IN, LPDWORD, NULL, OPTIONAL, DWORD, etc.
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#include <lmcons.h> // NET_API_STATUS
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// These may be included in any order:
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#include <netdebug.h> // NetpBreakPoint(), NetpKdPrint(()).
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#include <prefix.h> // PREFIX_ equates.
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#include <rap.h> // My prototype, LPDESC, DESC_CHAR_IS_DIGIT().
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#include <remtypes.h> // REM_WORD, etc.
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BOOL
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RapIsValidDescriptorSmb (
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IN LPDESC Desc
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)
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/*++
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Routine Description:
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RapIsValidDescriptorSmb checks a given descriptor to make sure it is
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valid for sending to a 16-bit downlevel machine in an SMB.
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Arguments:
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Desc - the alleged descriptor string. Note that a null pointer is
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invalid, but a pointer to a null string is OK.
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Return Value:
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BOOL - TRUE if valid, FALSE otherwise.
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--*/
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{
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if (Desc == NULL) {
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return (FALSE);
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}
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if (*Desc == '\0') {
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return (TRUE);
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}
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//
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// Loop through the input descriptor string.
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//
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while ( *Desc != '\0' ) {
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switch ( *Desc++ ) {
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///////////////////////////////////////
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// Items which allow trailing digits //
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///////////////////////////////////////
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case REM_BYTE:
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case REM_WORD:
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case REM_DWORD:
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case REM_BYTE_PTR:
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case REM_WORD_PTR:
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case REM_DWORD_PTR:
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case REM_RCV_BYTE_PTR:
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case REM_RCV_WORD_PTR:
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case REM_RCV_DWORD_PTR:
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case REM_FILL_BYTES:
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// Skip digits...
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while (DESC_CHAR_IS_DIGIT(*Desc)) {
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Desc++;
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}
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break;
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/////////////////////////////////////////////
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// Items which don't allow trailing digits //
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/////////////////////////////////////////////
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case REM_ASCIZ: // Strings with trailing digits are internal use only.
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case REM_NULL_PTR:
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case REM_SEND_BUF_PTR:
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case REM_SEND_BUF_LEN:
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case REM_SEND_LENBUF:
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case REM_DATE_TIME:
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case REM_RCV_BUF_PTR:
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case REM_RCV_BUF_LEN:
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case REM_PARMNUM:
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case REM_ENTRIES_READ:
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case REM_AUX_NUM:
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case REM_AUX_NUM_DWORD:
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case REM_DATA_BLOCK:
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if (DESC_CHAR_IS_DIGIT( *Desc )) {
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NetpKdPrint(( PREFIX_NETRAP
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"RapIsValidDescriptorSmb: "
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"Unsupported digit(s) at " FORMAT_LPVOID
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": for " FORMAT_LPDESC_CHAR "\n",
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(LPVOID) (Desc-1), *(Desc-1) ));
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NetpBreakPoint();
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return (FALSE);
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}
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break;
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///////////////////////////////////////
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// Items which are internal use only //
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///////////////////////////////////////
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case REM_SIGNED_DWORD:
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case REM_SIGNED_DWORD_PTR:
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case REM_ASCIZ_TRUNCATABLE:
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case REM_IGNORE:
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case REM_WORD_LINEAR:
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case REM_UNSUPPORTED_FIELD:
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case REM_EPOCH_TIME_GMT: /*FALLTHROUGH*/
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case REM_EPOCH_TIME_LOCAL:
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// Internal only!
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NetpKdPrint(( PREFIX_NETRAP
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"RapIsValidDescriptorSmb: Internal use only desc"
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" at " FORMAT_LPVOID ": " FORMAT_LPDESC_CHAR "\n",
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(LPVOID) (Desc-1), *(Desc-1) ));
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NetpBreakPoint();
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return (FALSE);
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default:
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NetpKdPrint(( PREFIX_NETRAP
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"RapIsValidDescriptorSmb: Unsupported input character"
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" at " FORMAT_LPVOID ": " FORMAT_LPDESC_CHAR "\n",
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(LPVOID) (Desc-1), *(Desc-1) ));
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NetpBreakPoint();
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return (FALSE);
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}
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}
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return (TRUE); // All OK.
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} // RapIsValidDescriptorSmb
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