algo_xxhash32.c

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// SPDX-FileCopyrightText: 2021 deroad <wargio@libero.it>
// SPDX-License-Identifier: LGPL-3.0-only
 
#include <rz_hash.h>
#include <rz_util/rz_assert.h>
#include <xxhash.h>
 
#define RZ_HASH_XXHASH32_DIGEST_SIZE  4
#define RZ_HASH_XXHASH32_BLOCK_LENGTH 0
 
static void *plugin_xxhash32_context_new() {
    return XXH32_createState();
}
 
static void plugin_xxhash32_context_free(void *context) {
    XXH32_freeState((XXH32_state_t *)context);
}
 
static RzHashSize plugin_xxhash32_digest_size(void *context) {
    return RZ_HASH_XXHASH32_DIGEST_SIZE;
}
 
static RzHashSize plugin_xxhash32_block_size(void *context) {
    return RZ_HASH_XXHASH32_BLOCK_LENGTH;
}
 
static bool plugin_xxhash32_init(void *context) {
    rz_return_val_if_fail(context, false);
 
    XXH32_reset((XXH32_state_t *)context, 0);
    return true;
}
 
static bool plugin_xxhash32_update(void *context, const ut8 *data, ut64 size) {
    rz_return_val_if_fail(context && data, false);
 
    XXH32_update((XXH32_state_t *)context, data, size);
    return true;
}
 
static bool plugin_xxhash32_final(void *context, ut8 *digest) {
    rz_return_val_if_fail(context && digest, false);
 
    ut32 dgst = XXH32_digest((XXH32_state_t *)context);
    rz_write_le32(digest, dgst);
    return true;
}
 
static bool plugin_xxhash32_small_block(const ut8 *data, ut64 size, ut8 **digest, RzHashSize *digest_size) {
    rz_return_val_if_fail(data && digest, false);
    ut8 *dgst = malloc(RZ_HASH_XXHASH32_DIGEST_SIZE);
    if (!dgst) {
        return false;
    }
 
    ut32 result = XXH32(data, size, 0);
    rz_write_le32(dgst, result);
 
    *digest = dgst;
    if (digest_size) {
        *digest_size = RZ_HASH_XXHASH32_DIGEST_SIZE;
    }
    return true;
}
 
RzHashPlugin rz_hash_plugin_xxhash32 = {
    .name = "xxhash32",
    .license = "LGPL3",
    .author = "deroad",
    .support_hmac = false,
    .context_new = plugin_xxhash32_context_new,
    .context_free = plugin_xxhash32_context_free,
    .digest_size = plugin_xxhash32_digest_size,
    .block_size = plugin_xxhash32_block_size,
    .init = plugin_xxhash32_init,
    .update = plugin_xxhash32_update,
    .final = plugin_xxhash32_final,
    .small_block = plugin_xxhash32_small_block,
};
 
#ifndef RZ_PLUGIN_INCORE
RZ_API RzLibStruct rizin_plugin = {
    .type = RZ_LIB_TYPE_HASH,
    .data = &rz_hash_plugin_xxhash32,
    .version = RZ_VERSION
};
#endif