/* Hashes a file onto the provided buffer and looks it up the cache.
Returns CL_VIRUS if found, CL_CLEAN if not FIXME or a recoverable error,
and returns CL_EREAD if unrecoverable */
int cache_check(unsigned char *hash, cli_ctx *ctx) {
fmap_t *map;
size_t todo, at = 0;
cli_md5_ctx md5;
int ret;
if(!ctx || !ctx->engine || !ctx->engine->cache)
return CL_VIRUS;
map = *ctx->fmap;
todo = map->len;
cli_md5_init(&md5);
while(todo) {
const void *buf;
size_t readme = todo < FILEBUFF ? todo : FILEBUFF;
if(!(buf = fmap_need_off_once(map, at, readme)))
return CL_EREAD;
todo -= readme;
at += readme;
if (cli_md5_update(&md5, buf, readme)) {
cli_errmsg("cache_check: error reading while generating hash!\n");
return CL_EREAD;
}
}
cli_md5_final(hash, &md5);
ret = cache_lookup_hash(hash, map->len, ctx->engine->cache, ctx->recursion);
cli_dbgmsg("cache_check: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x is %s\n", hash[0], hash[1], hash[2], hash[3], hash[4], hash[5], hash[6], hash[7], hash[8], hash[9], hash[10], hash[11], hash[12], hash[13], hash[14], hash[15], (ret == CL_VIRUS) ? "negative" : "positive");
return ret;
}
/* Hashes a file onto the provided buffer and looks it up the cache.
Returns CL_VIRUS if found, CL_CLEAN if not FIXME or a recoverable error,
and returns CL_EREAD if unrecoverable */
int cache_check(unsigned char *hash, cli_ctx *ctx) {
fmap_t *map;
size_t todo, at = 0;
void *hashctx;
int ret;
if(!ctx || !ctx->engine || !ctx->engine->cache)
return CL_VIRUS;
if (ctx->engine->engine_options & ENGINE_OPTIONS_DISABLE_CACHE) {
cli_dbgmsg("cache_check: Caching disabled. Returning CL_VIRUS.\n");
return CL_VIRUS;
}
map = *ctx->fmap;
todo = map->len;
hashctx = cl_hash_init("md5");
if (!(hashctx))
return CL_VIRUS;
while(todo) {
const void *buf;
size_t readme = todo < FILEBUFF ? todo : FILEBUFF;
if(!(buf = fmap_need_off_once(map, at, readme))) {
cl_hash_destroy(hashctx);
return CL_EREAD;
}
todo -= readme;
at += readme;
if (cl_update_hash(hashctx, (void *)buf, readme)) {
cl_hash_destroy(hashctx);
cli_errmsg("cache_check: error reading while generating hash!\n");
return CL_EREAD;
}
}
cl_finish_hash(hashctx, hash);
ret = cache_lookup_hash(hash, map->len, ctx->engine->cache, ctx->recursion);
cli_dbgmsg("cache_check: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x is %s\n", hash[0], hash[1], hash[2], hash[3], hash[4], hash[5], hash[6], hash[7], hash[8], hash[9], hash[10], hash[11], hash[12], hash[13], hash[14], hash[15], (ret == CL_VIRUS) ? "negative" : "positive");
return ret;
}
/* Hashes a file onto the provided buffer and looks it up the cache.
Returns CL_VIRUS if found, CL_CLEAN if not FIXME or a recoverable error,
and returns CL_EREAD if unrecoverable */
int cache_check(unsigned char *hash, cli_ctx *ctx) {
fmap_t *map;
int ret;
if(!ctx || !ctx->engine || !ctx->engine->cache)
return CL_VIRUS;
if (ctx->engine->engine_options & ENGINE_OPTIONS_DISABLE_CACHE) {
cli_dbgmsg("cache_check: Caching disabled. Returning CL_VIRUS.\n");
return CL_VIRUS;
}
ret = cache_get_MD5(hash, ctx);
if (ret != CL_CLEAN)
return ret;
map = *ctx->fmap;
ret = cache_lookup_hash(hash, map->len, ctx->engine->cache, ctx->recursion);
cli_dbgmsg("cache_check: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x is %s\n", hash[0], hash[1], hash[2], hash[3], hash[4], hash[5], hash[6], hash[7], hash[8], hash[9], hash[10], hash[11], hash[12], hash[13], hash[14], hash[15], (ret == CL_VIRUS) ? "negative" : "positive");
return ret;
}
