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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* tests/fuzzing/fuzz_gss.c */
/*
* Copyright (C) 2024 by Arjun. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Fuzzing harness implementation for gss_accept_sec_context.
*/
#include "autoconf.h"
#include <krb5.h>
#include <gssapi.h>
#include <string.h>
#define kMinInputLength 2
#define kMaxInputLength 1024
extern int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
gss_OID doid;
OM_uint32 minor, ret_flags, time_rec;
gss_name_t client = GSS_C_NO_NAME;
gss_ctx_id_t context = GSS_C_NO_CONTEXT;
gss_cred_id_t deleg_cred = GSS_C_NO_CREDENTIAL;
gss_buffer_desc data_in, data_out = GSS_C_EMPTY_BUFFER;
if (size < kMinInputLength || size > kMaxInputLength)
return 0;
data_in.length = size;
data_in.value = (void *)data;
gss_accept_sec_context(&minor, &context, GSS_C_NO_CREDENTIAL,
&data_in, GSS_C_NO_CHANNEL_BINDINGS, &client,
&doid, &data_out, &ret_flags, &time_rec,
&deleg_cred);
gss_release_buffer(&minor, &data_out);
if (context != GSS_C_NO_CONTEXT)
gss_delete_sec_context(&minor, &context, GSS_C_NO_BUFFER);
return 0;
}
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