int max_out_bytes = size + 200;
void *out = malloc(max_out_bytes);
void *metadata = malloc(200);
+ int metadata_size;
void *in;
SHA_CTX c;
if (!out || (int)(long)in == -1)
return -1;
+ metadata_size = 1+sprintf(metadata, "blob %lu", size);
+
+ SHA1_Init(&c);
+ SHA1_Update(&c, metadata, metadata_size);
+ SHA1_Update(&c, in, size);
+ SHA1_Final(sha1, &c);
+
memset(&stream, 0, sizeof(stream));
deflateInit(&stream, Z_BEST_COMPRESSION);
* ASCII size + nul byte
*/
stream.next_in = metadata;
- stream.avail_in = 1+sprintf(metadata, "blob %lu", size);
+ stream.avail_in = metadata_size;
stream.next_out = out;
stream.avail_out = max_out_bytes;
while (deflate(&stream, 0) == Z_OK)
deflateEnd(&stream);
- SHA1_Init(&c);
- SHA1_Update(&c, out, stream.total_out);
- SHA1_Final(sha1, &c);
-
return write_sha1_buffer(sha1, out, stream.total_out);
}