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/* Copyright (c) 2022, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#include <openssl/bio.h>
#include <openssl/conf.h>
#include <openssl/x509.h>
#include <algorithm>
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len) {
// The string-based extensions APIs routinely produce output quadratic in
// their input. Cap the input size to mitigate this. See also
// https://crbug.com/boringssl/611.
len = std::min(len, size_t{8 * 1024});
bssl::UniquePtr<BIO> bio(BIO_new_mem_buf(buf, len));
bssl::UniquePtr<CONF> conf(NCONF_new(nullptr));
if (NCONF_load_bio(conf.get(), bio.get(), nullptr)) {
// Run with and without |X509V3_CTX| information.
bssl::UniquePtr<X509> cert(X509_new());
X509V3_CTX ctx;
X509V3_set_ctx(&ctx, /*subject=*/cert.get(), /*issuer=*/cert.get(), nullptr,
nullptr, 0);
X509V3_EXT_add_nconf(conf.get(), &ctx, "default", cert.get());
cert.reset(X509_new());
X509V3_EXT_add_nconf(conf.get(), nullptr, "default", cert.get());
}
return 0;
}
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