/*

 * Copyright 2025 Jakub Jelen <jjelen@redhat.com>

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include <assert.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#define LIBSSH_STATIC 1

#include "libssh/libssh.h"

#include "nallocinc.c"

static void _fuzz_finalize(void)

{

    ssh_finalize();

}

int LLVMFuzzerInitialize(int *argc, char ***argv)

{

    (void)argc;

    nalloc_init(*argv[0]);

    ssh_init();

    atexit(_fuzz_finalize);

    return 0;

}

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)

{

    ssh_key pkey = NULL;

    const char input[] = "badc0de";

    const char namespace[] = "namespace";

    char *signature = NULL;

    int rc;

    assert(nalloc_start(data, size) > 0);

    signature = (char *)malloc(size + 1);

    if (signature == NULL) {

        goto out;

    }

    strncpy(signature, (const char *)data, size);

    signature[size] = '\0';

    rc = sshsig_verify(input, sizeof(input), signature, namespace, &pkey);

    free(signature);

    if (rc != SSH_OK) {

        goto out;

    }

    ssh_key_free(pkey);

out:

    nalloc_end();

    return 0;

}