aaru-dps/Aaru.Checksums.Native
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General refactor and cleanup.

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This commit is contained in:
Natalia Portillo
2024-04-30 15:12:48 +01:00
parent 552aa9da02
commit bd5051ce18
48 changed files with 1157 additions and 1290 deletions
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25
spamsum.c
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@@ -92,8 +92,8 @@ AARU_EXPORT void AARU_CALL spamsum_free(spamsum_ctx *ctx)
if(ctx) free(ctx);
}
#define ROLL_SUM(ctx) ((ctx)->roll.h1 + (ctx)->roll.h2 + (ctx)->roll.h3)
#define SUM_HASH(c, h) (((h)*HASH_PRIME) ^ (c));
#define ROLL_SUM(ctx) ((ctx)->roll.h1 + (ctx)->roll.h2 + (ctx)->roll.h3)
#define SUM_HASH(c, h) (((h) * HASH_PRIME) ^ (c));
#define SSDEEP_BS(index) (MIN_BLOCKSIZE << (index))
FORCE_INLINE void fuzzy_engine_step(spamsum_ctx *ctx, uint8_t c)
@@ -107,7 +107,7 @@ FORCE_INLINE void fuzzy_engine_step(spamsum_ctx *ctx, uint8_t c)
for(i = ctx->bh_start; i < ctx->bh_end; ++i)
{
ctx->bh[i].h = SUM_HASH(c, ctx->bh[i].h);
ctx->bh[i].h = SUM_HASH(c, ctx->bh[i].h);
ctx->bh[i].half_h = SUM_HASH(c, ctx->bh[i].half_h);
}
@@ -126,7 +126,7 @@ FORCE_INLINE void fuzzy_engine_step(spamsum_ctx *ctx, uint8_t c)
if(0 == ctx->bh[i].d_len) fuzzy_try_fork_blockhash(ctx);
ctx->bh[i].digest[ctx->bh[i].d_len] = b64[ctx->bh[i].h % 64];
ctx->bh[i].half_digest = b64[ctx->bh[i].half_h % 64];
ctx->bh[i].half_digest = b64[ctx->bh[i].half_h % 64];
if(ctx->bh[i].d_len < SPAMSUM_LENGTH - 1)
{
@@ -137,7 +137,7 @@ FORCE_INLINE void fuzzy_engine_step(spamsum_ctx *ctx, uint8_t c)
* last few pieces of the message into a single piece
* */
ctx->bh[i].digest[++ctx->bh[i].d_len] = 0;
ctx->bh[i].h = HASH_INIT;
ctx->bh[i].h = HASH_INIT;
if(ctx->bh[i].d_len >= SPAMSUM_LENGTH / 2) continue;
@@ -193,11 +193,11 @@ FORCE_INLINE void fuzzy_try_fork_blockhash(spamsum_ctx *ctx)
// assert(ctx->bh_end != 0);
uint32_t obh = ctx->bh_end - 1;
uint32_t nbh = ctx->bh_end;
ctx->bh[nbh].h = ctx->bh[obh].h;
ctx->bh[nbh].half_h = ctx->bh[obh].half_h;
ctx->bh[nbh].digest[0] = 0;
uint32_t obh = ctx->bh_end - 1;
uint32_t nbh = ctx->bh_end;
ctx->bh[nbh].h = ctx->bh[obh].h;
ctx->bh[nbh].half_h = ctx->bh[obh].half_h;
ctx->bh[nbh].digest[0] = 0;
ctx->bh[nbh].half_digest = 0;
ctx->bh[nbh].d_len = 0;
++ctx->bh_end;
@@ -297,7 +297,8 @@ AARU_EXPORT int AARU_CALL spamsum_final(spamsum_ctx *ctx, uint8_t *result)
++bi;
i = (int)ctx->bh[bi].d_len;
if(i <= remain);
if(i <= remain)
;
memcpy(result, ctx->bh[bi].digest, (size_t)i);
result += i;
@@ -307,7 +308,7 @@ AARU_EXPORT int AARU_CALL spamsum_final(spamsum_ctx *ctx, uint8_t *result)
{
// assert(remain > 0);
h = ctx->bh[bi].half_h;
h = ctx->bh[bi].half_h;
*result = b64[h % 64];
if(i < 3 || *result != result[-1] || *result != result[-2] || *result != result[-3])