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mdns: Update fuzzer test (add delegation, check memory)

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* Add new config with no services
* Add new test packets and more queries
* Allocate packet to check for mem issues


* Original commit: espressif/esp-idf@2c1007156e
This commit is contained in:
David Cermak
2022-02-01 09:56:32 +01:00
committed by suren-gabrielyan-espressif
parent 5909e9e54c
commit ec03fec3d3
12 changed files with 72 additions and 18 deletions
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86
components/mdns/test_afl_fuzz_host/test.c
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@ -1,16 +1,8 @@
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// 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.
/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdio.h>
#include <stdlib.h>
@ -36,11 +28,14 @@ mdns_search_once_t * mdns_test_search_init(const char * name, const char * servi
esp_err_t mdns_test_send_search_action(mdns_action_type_t type, mdns_search_once_t * search);
void mdns_test_search_free(mdns_search_once_t * search);
void mdns_test_init_di(void);
extern mdns_server_t * _mdns_server;
//
// mdns function wrappers for mdns setup in test mode
static int mdns_test_hostname_set(const char * mdns_hostname)
{
_mdns_server->interfaces[MDNS_IF_STA].pcbs[MDNS_IP_PROTOCOL_V4].state = PCB_RUNNING; // mark the PCB running to exercise mdns in fully operational mode
_mdns_server->interfaces[MDNS_IF_STA].pcbs[MDNS_IP_PROTOCOL_V6].state = PCB_RUNNING;
int ret = mdns_hostname_set(mdns_hostname);
mdns_action_t * a = NULL;
GetLastItem(&a);
@ -48,6 +43,18 @@ static int mdns_test_hostname_set(const char * mdns_hostname)
return ret;
}
static int mdns_test_add_delegated_host(const char * mdns_hostname)
{
mdns_ip_addr_t addr = { .addr = { .u_addr = ESP_IPADDR_TYPE_V4 } };
addr.addr.u_addr.ip4.addr = 0x11111111;
int ret = mdns_delegate_hostname_add(mdns_hostname, &addr);
mdns_action_t * a = NULL;
GetLastItem(&a);
mdns_test_execute_action(a);
return ret;
}
static int mdns_test_service_instance_name_set(const char * service, const char * proto, const char * instance)
{
int ret = mdns_service_instance_name_set(service, proto, instance);
@ -66,6 +73,25 @@ static int mdns_test_service_txt_set(const char * service, const char * proto,
return ret;
}
static int mdns_test_sub_service_add(const char * sub_name, const char * service_name, const char * proto, uint32_t port)
{
if (mdns_service_add(NULL, service_name, proto, port, NULL, 0)) {
// This is expected failure as the service thread is not running
}
mdns_action_t * a = NULL;
GetLastItem(&a);
mdns_test_execute_action(a);
if (mdns_test_mdns_get_service_item(service_name, proto)==NULL) {
return ESP_FAIL;
}
int ret = mdns_service_subtype_add_for_host(NULL, service_name, proto, NULL, sub_name);
a = NULL;
GetLastItem(&a);
mdns_test_execute_action(a);
return ret;
}
static int mdns_test_service_add(const char * service_name, const char * proto, uint32_t port)
{
if (mdns_service_add(NULL, service_name, proto, port, NULL, 0)) {
@ -81,9 +107,9 @@ static int mdns_test_service_add(const char * service_name, const char * proto,
return ESP_OK;
}
static mdns_result_t* mdns_test_query(const char * service_name, const char * proto)
static mdns_result_t* mdns_test_query(const char * name, const char * service, const char * proto, uint16_t type)
{
search = mdns_test_search_init(NULL, service_name, proto, MDNS_TYPE_PTR, 3000, 20);
search = mdns_test_search_init(name, service, proto, type, 3000, 20);
if (!search) {
abort();
}
@ -142,6 +168,20 @@ int main(int argc, char** argv)
abort();
}
if (mdns_test_add_delegated_host(mdns_hostname) || mdns_test_add_delegated_host("megafritz")) {
abort();
}
#ifndef MDNS_NO_SERVICES
if (mdns_test_sub_service_add("_server", "_fritz", "_tcp", 22)) {
abort();
}
if (mdns_test_service_add("_telnet", "_tcp", 22)) {
abort();
}
if (mdns_test_service_add("_workstation", "_tcp", 9)) {
abort();
}
@ -186,7 +226,7 @@ int main(int argc, char** argv)
{
abort();
}
#endif
mdns_result_t * results = NULL;
FILE *file;
size_t nread;
@ -216,12 +256,22 @@ int main(int argc, char** argv)
memset(buf, 0, 1460);
size_t len = read(0, buf, 1460);
#endif
mypbuf.payload = buf;
mypbuf.payload = malloc(len);
memcpy(mypbuf.payload, buf, len);
mypbuf.len = len;
g_packet.pb = &mypbuf;
mdns_test_query("_afpovertcp", "_tcp");
mdns_test_query("minifritz", "_fritz", "_tcp", MDNS_TYPE_ANY);
mdns_test_query(NULL, "_fritz", "_tcp", MDNS_TYPE_PTR);
mdns_test_query(NULL, "_afpovertcp", "_tcp", MDNS_TYPE_PTR);
mdns_parse_packet(&g_packet);
free(mypbuf.payload);
}
#ifndef MDNS_NO_SERVICES
mdns_service_remove_all();
mdns_action_t *a = NULL;
GetLastItem(&a);
mdns_test_execute_action(a);
#endif
ForceTaskDelete();
mdns_free();
return 0;