| 1 | /* $Id: odin32validate.h,v 1.1 2000-04-16 02:59:03 bird Exp $
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| 2 | *
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| 3 | * Parameter validation macros.
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| 4 | *
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| 5 | * Copyright (c) 2000 knut st. osmundsen (knut.stange.osmundsen@pmsc.no)
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| 6 | *
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| 7 | * Project Odin Software License can be found in LICENSE.TXT
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| 8 | *
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| 9 | */
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| 10 | #ifndef _odin32validate_h_
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| 11 | #define _odin32validate_h_
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| 12 |
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| 13 | /**
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| 14 | * ADDRESS_SPACE_LIMIT holds the largest possible address in the address space + 1.
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| 15 | * 3GB is the higest possible address in the user address space in OS/2.
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| 16 | */
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| 17 | #define ADDRESS_SPACE_LIMIT 0xc0000000
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| 18 |
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| 19 |
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| 20 | /**
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| 21 | * Validates that the value of a pointer is within the virtual address space.
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| 22 | * @returns TRUE if valid.
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| 23 | * FALSE if invalid.
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| 24 | * @param p Pointer value.
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| 25 | */
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| 26 | #define VALIDFAST_PTR(p) \
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| 27 | ((char*)(p) >= (char*)0x10000 \
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| 28 | && (char*)(p) < (char*)ADDRESS_SPACE_LIMIT)
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| 29 |
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| 30 |
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| 31 | /**
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| 32 | * Validates that a area pointed to is within the virtual address space.
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| 33 | * @returns TRUE if valid.
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| 34 | * FALSE if invalid.
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| 35 | * @param p Pointer value.
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| 36 | * @param cb Size of data pointer to by the pointer.
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| 37 | */
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| 38 | #define VALIDFAST_PTRSIZE(p, cb) \
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| 39 | ((char*)(p) >= (char*)0x10000 \
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| 40 | && (char*)(p) < (char*)ADDRESS_SPACE_LIMIT \
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| 41 | && (char*)(p) + (char*)(cb) < (char*)ADDRESS_SPACE_LIMIT)
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| 42 |
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| 43 | /**
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| 44 | * Validates that the value of a string pointer is within the virtual address
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| 45 | * space, and that its length less or equal to the given max length.
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| 46 | * @returns TRUE if valid.
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| 47 | * FALSE if invalid.
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| 48 | * @param psz String pointer.
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| 49 | * @param cchMax Max string length
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| 50 | */
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| 51 | #define VALIDFAST_PSZLENGTH(psz, cchMax) \
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| 52 | (VALIDFAST_PTRSIZE(psz, 1) \
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| 53 | && strlen(psz) <= cchMax)
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| 54 |
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| 55 |
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| 56 |
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| 57 | #endif /* !defined(_odin32validate_h_) */
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