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