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libmd5sum: use tuxbox upstream code

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This commit is contained in:
Stefan Seyfried
2016-10-23 16:59:32 +02:00
parent 037dbb0e29
commit 727d56d69a
1 changed files with 8 additions and 6 deletions
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14
lib/libmd5sum/md5.c
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@@ -96,8 +96,8 @@ md5_finish_ctx (ctx, resbuf)
{ {
/* Take yet unprocessed bytes into account. */ /* Take yet unprocessed bytes into account. */
md5_uint32 bytes = ctx->buflen; md5_uint32 bytes = ctx->buflen;
md5_uint32 swap_bytes;
size_t pad; size_t pad;
md5_uint32 *p;
/* Now count remaining bytes. */ /* Now count remaining bytes. */
ctx->total[0] += bytes; ctx->total[0] += bytes;
@@ -107,11 +107,13 @@ md5_finish_ctx (ctx, resbuf)
pad = bytes >= 56 ? 64 + 56 - bytes : 56 - bytes; pad = bytes >= 56 ? 64 + 56 - bytes : 56 - bytes;
memmove (&ctx->buffer[bytes], fillbuf, pad); memmove (&ctx->buffer[bytes], fillbuf, pad);
/* Put the 64-bit file length in *bits* at the end of the buffer. */ /* Put the 64-bit file length in *bits* at the end of the buffer.
p = (md5_uint32 *)&ctx->buffer[bytes + pad]; Use memcpy to avoid aliasing problems. On most systems, this
*p = SWAP (ctx->total[0] << 3); will be optimized away to the same code. */
p++; swap_bytes = SWAP (ctx->total[0] << 3);
*p = SWAP ((ctx->total[1] << 3) | (ctx->total[0] >> 29)); memcpy (&ctx->buffer[bytes + pad], &swap_bytes, sizeof (swap_bytes));
swap_bytes = SWAP ((ctx->total[1] << 3) | (ctx->total[0] >> 29));
memcpy (&ctx->buffer[bytes + pad + 4], &swap_bytes, sizeof (swap_bytes));
/* Process last bytes. */ /* Process last bytes. */
md5_process_block (ctx->buffer, bytes + pad + 8, ctx); md5_process_block (ctx->buffer, bytes + pad + 8, ctx);