diff options
Diffstat (limited to 'src/liblzma/check/check.c')
| -rw-r--r-- | src/liblzma/check/check.c | 128 |
1 files changed, 55 insertions, 73 deletions
diff --git a/src/liblzma/check/check.c b/src/liblzma/check/check.c index 388b57e8..ed64fe5c 100644 --- a/src/liblzma/check/check.c +++ b/src/liblzma/check/check.c @@ -13,60 +13,77 @@ #include "check.h" -// See the .lzma header format specification section 2.1.1.2. -LZMA_API const uint32_t lzma_check_sizes[LZMA_CHECK_ID_MAX + 1] = { - 0, - 4, 4, 4, - 8, 8, 8, - 16, 16, 16, - 32, 32, 32, - 64, 64, 64 -}; +extern LZMA_API lzma_bool +lzma_check_is_supported(lzma_check type) +{ + if ((unsigned)(type) > LZMA_CHECK_ID_MAX) + return false; -LZMA_API const lzma_bool lzma_available_checks[LZMA_CHECK_ID_MAX + 1] = { - true, // LZMA_CHECK_NONE + static const lzma_bool available_checks[LZMA_CHECK_ID_MAX + 1] = { + true, // LZMA_CHECK_NONE #ifdef HAVE_CHECK_CRC32 - true, + true, #else - false, + false, #endif - false, // Reserved - false, // Reserved + false, // Reserved + false, // Reserved #ifdef HAVE_CHECK_CRC64 - true, + true, #else - false, + false, #endif - false, // Reserved - false, // Reserved - false, // Reserved - false, // Reserved - false, // Reserved + false, // Reserved + false, // Reserved + false, // Reserved + false, // Reserved + false, // Reserved #ifdef HAVE_CHECK_SHA256 - true, + true, #else - false, + false, #endif - false, // Reserved - false, // Reserved - false, // Reserved - false, // Reserved - false, // Reserved -}; + false, // Reserved + false, // Reserved + false, // Reserved + false, // Reserved + false, // Reserved + }; + + return available_checks[(unsigned)(type)]; +} -extern lzma_ret -lzma_check_init(lzma_check *check, lzma_check_type type) +extern LZMA_API uint32_t +lzma_check_size(lzma_check type) { - lzma_ret ret = LZMA_OK; + if ((unsigned)(type) > LZMA_CHECK_ID_MAX) + return UINT32_MAX; + + // See file-format.txt section 2.1.1.2. + static const uint8_t check_sizes[LZMA_CHECK_ID_MAX + 1] = { + 0, + 4, 4, 4, + 8, 8, 8, + 16, 16, 16, + 32, 32, 32, + 64, 64, 64 + }; + + return check_sizes[(unsigned)(type)]; +} + +extern void +lzma_check_init(lzma_check_state *check, lzma_check type) +{ switch (type) { case LZMA_CHECK_NONE: break; @@ -90,19 +107,15 @@ lzma_check_init(lzma_check *check, lzma_check_type type) #endif default: - if ((unsigned)(type) <= LZMA_CHECK_ID_MAX) - ret = LZMA_UNSUPPORTED_CHECK; - else - ret = LZMA_PROG_ERROR; break; } - return ret; + return; } extern void -lzma_check_update(lzma_check *check, lzma_check_type type, +lzma_check_update(lzma_check_state *check, lzma_check type, const uint8_t *buf, size_t size) { switch (type) { @@ -133,18 +146,18 @@ lzma_check_update(lzma_check *check, lzma_check_type type, extern void -lzma_check_finish(lzma_check *check, lzma_check_type type) +lzma_check_finish(lzma_check_state *check, lzma_check type) { switch (type) { #ifdef HAVE_CHECK_CRC32 case LZMA_CHECK_CRC32: - *(uint32_t *)(check->buffer) = check->state.crc32; + check->buffer.u32[0] = integer_le_32(check->state.crc32); break; #endif #ifdef HAVE_CHECK_CRC64 case LZMA_CHECK_CRC64: - *(uint64_t *)(check->buffer) = check->state.crc64; + check->buffer.u64[0] = integer_le_64(check->state.crc64); break; #endif @@ -160,34 +173,3 @@ lzma_check_finish(lzma_check *check, lzma_check_type type) 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; -} -*/ |