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/*
# Copyright 2017 Red Hat, Inc.
#
# 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 <stdint.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <gnutls/gnutls.h>
#include "certs.h"
struct mem_st {
const uint8_t *data;
size_t size;
};
#define MIN(x,y) ((x)<(y)?(x):(y))
static ssize_t
server_push(gnutls_transport_ptr_t tr, const void *data, size_t len)
{
return len;
}
static ssize_t server_pull(gnutls_transport_ptr_t tr, void *data, size_t len)
{
struct mem_st *p = (struct mem_st*)tr;
if (p->size == 0) {
return 0;
}
len = MIN(len, p->size);
memcpy(data, p->data, len);
p->size -= len;
p->data += len;
return len;
}
int server_pull_timeout_func(gnutls_transport_ptr_t tr, unsigned int ms)
{
struct mem_st *p = (struct mem_st*)tr;
if (p->size > 0)
return 1; /* available data */
else
return 0; /* timeout */
}
#ifdef __cplusplus
extern "C"
#endif
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_session_t session;
gnutls_certificate_credentials_t xcred;
struct mem_st memdata;
res = gnutls_init(&session, GNUTLS_SERVER);
assert(res >= 0);
res = gnutls_certificate_allocate_credentials(&xcred);
assert(res >= 0);
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);
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);
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_set_default_priority(session);
assert(res >= 0);
memdata.data = data;
memdata.size = size;
gnutls_transport_set_push_function(session, server_push);
gnutls_transport_set_pull_function(session, server_pull);
gnutls_transport_set_pull_timeout_function(session, server_pull_timeout_func);
gnutls_transport_set_ptr(session, &memdata);
do {
res = gnutls_handshake(session);
} while (res < 0 && gnutls_error_is_fatal(res) == 0);
if (res >= 0) {
while (true) {
char buf[16384];
res = gnutls_record_recv(session, buf, sizeof(buf));
if (res <= 0) {
break;
}
}
}
gnutls_deinit(session);
gnutls_certificate_free_credentials(xcred);
return 0;
}
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