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/*
* Copyright 2018 Google 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.
*
* This fuzzer exercises the SNMP PDU parsing code, including ASN.1.
*/
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
int LLVMFuzzerInitialize(int *argc, char ***argv) {
if (getenv("NETSNMP_DEBUGGING") != NULL) {
/*
* Turn on all debugging, to help understand what
* bits of the parser are running.
*/
snmp_enable_stderrlog();
snmp_set_do_debugging(1);
debug_register_tokens("");
}
return 0;
}
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
size_t bytes_remaining = size;
netsnmp_pdu *pdu = SNMP_MALLOC_TYPEDEF(netsnmp_pdu);
snmp_pdu_parse(pdu, (unsigned char *)data, &bytes_remaining);
snmp_free_pdu(pdu);
return 0;
}
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