VIRUSCRC.H
上传用户:cuilin0620
上传日期:2007-01-13
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文件大小:1k
- /*
- VIRUSCRC.H
- Kevin Dean
- Fairview Mall P.O. Box 55074
- 1800 Sheppard Avenue East
- Willowdale, Ontario
- CANADA M2J 5B9
- CompuServe ID: 76336,3114
- March 24, 1991
- This is the interface to the anti-virus CRC check in VALIDCRC.C and
- VIRUSDAT.C.
- This code is public domain.
- */
- typedef
- unsigned long crc32_t;
- union filecrc
- {
- char searchstr[8]; /* String to search for. */
- struct
- {
- crc32_t polynomial; /* Polynomial for this file. */
- crc32_t crc; /* Calculated CRC for this file. */
- } x;
- };
- extern const union filecrc _viruscrc;
- /* CRC validation return codes. */
- enum
- {
- CRC_VALID, /* CRC is valid. */
- CRC_INVALID, /* CRC is invalid. */
- CRC_ISZERO, /* CRC polynomial has been reset to zero. */
- CRC_NOMEM, /* No memory for data buffer. */
- CRC_FILEERR /* Program file not found. */
- };
- int validatecrc(const char *progname);
- /* isvalidcrc() is declared to maintain compatibility with earlier releases. */
- #define isvalidcrc(progname) (validatecrc(progname) == CRC_VALID)