///////////////////////////////////////////////////////////////////////////////
//
/// \file check.c
/// \brief Check sizes
//
// This code has been put into the public domain.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
//
///////////////////////////////////////////////////////////////////////////////
#include "check.h"
// See the .lzma header format specification section 2.2.2.
LZMA_API const uint32_t lzma_check_sizes[8] = { 0, 4, 4, 8, 16, 32, 32, 64 };
LZMA_API const lzma_bool lzma_available_checks[LZMA_CHECK_ID_MAX + 1] = {
true, // LZMA_CHECK_NONE
#ifdef HAVE_CHECK_CRC32
true,
#else
false,
#endif
false, // Reserved
#ifdef HAVE_CHECK_CRC64
true,
#else
false,
#endif
false, // Reserved
#ifdef HAVE_CHECK_SHA256
true,
#else
false,
#endif
false, // Reserved
false, // Reserved
};
extern lzma_ret
lzma_check_init(lzma_check *check, lzma_check_type type)
{
lzma_ret ret = LZMA_OK;
switch (type) {
case LZMA_CHECK_NONE:
break;
#ifdef HAVE_CHECK_CRC32
case LZMA_CHECK_CRC32:
check->crc32 = 0;
break;
#endif
#ifdef HAVE_CHECK_CRC64
case LZMA_CHECK_CRC64:
check->crc64 = 0;
break;
#endif
#ifdef HAVE_CHECK_SHA256
case LZMA_CHECK_SHA256:
lzma_sha256_init(&check->sha256);
break;
#endif
default:
if (type <= LZMA_CHECK_ID_MAX)
ret = LZMA_UNSUPPORTED_CHECK;
else
ret = LZMA_PROG_ERROR;
break;
}
return ret;
}
extern void
lzma_check_update(lzma_check *check, lzma_check_type type,
const uint8_t *buf, size_t size)
{
switch (type) {
#ifdef HAVE_CHECK_CRC32
case LZMA_CHECK_CRC32:
check->crc32 = lzma_crc32(buf, size, check->crc32);
break;
#endif
#ifdef HAVE_CHECK_CRC64
case LZMA_CHECK_CRC64:
check->crc64 = lzma_crc64(buf, size, check->crc64);
break;
#endif
#ifdef HAVE_CHECK_SHA256
case LZMA_CHECK_SHA256:
lzma_sha256_update(buf, size, &check->sha256);
break;
#endif
default:
break;
}
return;
}
extern void
lzma_check_finish(lzma_check *check, lzma_check_type type)
{
#ifdef HAVE_CHECK_SHA256
if (type == LZMA_CHECK_SHA256)
lzma_sha256_finish(&check->sha256);
#endif
return;
}
/*
extern bool
lzma_check_compare(
lzma_check *check1, lzma_check *check2, lzma_check_type type)
{
bool ret;
switch (type) {
case LZMA_CHECK_NONE:
break;
case LZMA_CHECK_CRC32:
ret = check1->crc32 != check2->crc32;
break;
case LZMA_CHECK_CRC64:
ret = check1->crc64 != check2->crc64;
break;
default:
// Unsupported check
assert(type <= 7);
ret = false;
break;
}
return ret;
}
*/
