/*
* Copyright (C) 2017 Nikos Mavrogiannopoulos
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
#include <assert.h>
#include <stdint.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <gnutls/gnutls.h>
#include "certs.h"
#include "psk.h"
#include "mem.h"
#include "fuzzer.h"
static int psk_cb(gnutls_session_t session, const char *username, gnutls_datum_t * key)
{
key->data = (unsigned char*)gnutls_malloc(16);
assert(key->data != NULL);
memcpy(key->data, psk_key16, 16);
key->size = 16;
return 0;
}
int LLVMFuzzerTestOneInput(const uint8_t * data, size_t size)
{
int res;
gnutls_datum_t rsa_cert, rsa_key;
gnutls_datum_t ecdsa_cert, ecdsa_key;
gnutls_datum_t ed25519_cert, ed25519_key;
gnutls_datum_t ed448_cert, ed448_key;
gnutls_session_t session;
gnutls_certificate_credentials_t xcred;
gnutls_psk_server_credentials_t pcred;
struct mem_st memdata;
res = gnutls_init(&session, GNUTLS_SERVER);
assert(res >= 0);
res = gnutls_certificate_allocate_credentials(&xcred);
assert(res >= 0);
res = gnutls_psk_allocate_server_credentials(&pcred);
assert(res >= 0);
gnutls_psk_set_server_credentials_function(pcred, psk_cb);
gnutls_psk_set_server_known_dh_params(pcred, GNUTLS_SEC_PARAM_MEDIUM);
rsa_cert.data = (unsigned char *)kRSACertificateDER;
rsa_cert.size = sizeof(kRSACertificateDER);
rsa_key.data = (unsigned char *)kRSAPrivateKeyDER;
rsa_key.size = sizeof(kRSAPrivateKeyDER);
ecdsa_cert.data = (unsigned char *)kECDSACertificateDER;
ecdsa_cert.size = sizeof(kECDSACertificateDER);
ecdsa_key.data = (unsigned char *)kECDSAPrivateKeyDER;
ecdsa_key.size = sizeof(kECDSAPrivateKeyDER);
ed25519_cert.data = (unsigned char *)kEd25519CertificateDER;
ed25519_cert.size = sizeof(kEd25519CertificateDER);
ed25519_key.data = (unsigned char *)kEd25519PrivateKeyDER;
ed25519_key.size = sizeof(kEd25519PrivateKeyDER);
ed448_cert.data = (unsigned char *)kEd448CertificateDER;
ed448_cert.size = sizeof(kEd448CertificateDER);
ed448_key.data = (unsigned char *)kEd448PrivateKeyDER;
ed448_key.size = sizeof(kEd448PrivateKeyDER);
res =
gnutls_certificate_set_x509_key_mem(xcred, &rsa_cert, &rsa_key,
GNUTLS_X509_FMT_DER);
assert(res >= 0);
res =
gnutls_certificate_set_x509_key_mem(xcred, &ecdsa_cert, &ecdsa_key,
GNUTLS_X509_FMT_DER);
assert(res >= 0);
res =
gnutls_certificate_set_x509_key_mem(xcred, &ed25519_cert, &ed25519_key,
GNUTLS_X509_FMT_DER);
assert(res >= 0);
res =
gnutls_certificate_set_x509_key_mem(xcred, &ed448_cert, &ed448_key,
GNUTLS_X509_FMT_DER);
assert(res >= 0);
gnutls_certificate_set_known_dh_params(xcred, GNUTLS_SEC_PARAM_MEDIUM);
res = gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, xcred);
assert(res >= 0);
res = gnutls_credentials_set(session, GNUTLS_CRD_PSK, pcred);
assert(res >= 0);
res = gnutls_priority_set_direct(session, "NORMAL:-KX-ALL:+ECDHE-PSK:+DHE-PSK:+PSK:+RSA-PSK:"VERS_STR, NULL);
assert(res >= 0);
memdata.data = data;
memdata.size = size;
gnutls_transport_set_push_function(session, mem_push);
gnutls_transport_set_pull_function(session, mem_pull);
gnutls_transport_set_pull_timeout_function(session, mem_pull_timeout);
gnutls_transport_set_ptr(session, &memdata);
do {
res = gnutls_handshake(session);
} while (res < 0 && gnutls_error_is_fatal(res) == 0);
if (res >= 0) {
for (;;) {
char buf[16384];
res = gnutls_record_recv(session, buf, sizeof(buf));
if (res <= 0) {
break;
}
}
}
gnutls_deinit(session);
gnutls_certificate_free_credentials(xcred);
gnutls_psk_free_server_credentials(pcred);
return 0;
}