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Problem: no fuzz testing for API with variable input

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Solution: add tests for zmq_bind, zmq_connect and zmq_z85_decode
This commit is contained in:
Luca Boccassi 2020-04-26 22:23:04 +01:00
parent 57df836381
commit 96787c35f8
5 changed files with 267 additions and 6 deletions
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52
Makefile.am
View File

@ -1108,7 +1108,9 @@ endif
if FUZZING_ENGINE_LIB
fuzzer_apps = tests/test_bind_null_fuzzer \
tests/test_connect_null_fuzzer
tests/test_connect_null_fuzzer \
tests/test_bind_fuzzer \
tests/test_connect_fuzzer
tests_test_bind_null_fuzzer_DEPENDENCIES = src/libzmq.la
tests_test_bind_null_fuzzer_SOURCES = tests/test_bind_null_fuzzer.cpp
@ -1126,9 +1128,26 @@ tests_test_connect_null_fuzzer_LDADD = ${TESTUTIL_LIBS} ${FUZZING_ENGINE_LIB} \
tests_test_connect_null_fuzzer_CPPFLAGS = ${TESTUTIL_CPPFLAGS}
tests_test_connect_null_fuzzer_CXXFLAGS = -std=c++11
tests_test_bind_fuzzer_DEPENDENCIES = src/libzmq.la
tests_test_bind_fuzzer_SOURCES = tests/test_bind_fuzzer.cpp
tests_test_bind_fuzzer_LDADD = ${TESTUTIL_LIBS} ${FUZZING_ENGINE_LIB} \
$(top_builddir)/src/.libs/libzmq.a \
${src_libzmq_la_LIBADD}
tests_test_bind_fuzzer_CPPFLAGS = ${TESTUTIL_CPPFLAGS}
tests_test_bind_fuzzer_CXXFLAGS = -std=c++11
tests_test_connect_fuzzer_DEPENDENCIES = src/libzmq.la
tests_test_connect_fuzzer_SOURCES = tests/test_connect_fuzzer.cpp
tests_test_connect_fuzzer_LDADD = ${TESTUTIL_LIBS} ${FUZZING_ENGINE_LIB} \
$(top_builddir)/src/.libs/libzmq.a \
${src_libzmq_la_LIBADD}
tests_test_connect_fuzzer_CPPFLAGS = ${TESTUTIL_CPPFLAGS}
tests_test_connect_fuzzer_CXXFLAGS = -std=c++11
if HAVE_CURVE
fuzzer_apps += tests/test_bind_curve_fuzzer \
tests/test_connect_curve_fuzzer
tests/test_connect_curve_fuzzer \
tests/test_z85_decode_fuzzer
tests_test_bind_curve_fuzzer_DEPENDENCIES = src/libzmq.la
tests_test_bind_curve_fuzzer_SOURCES = tests/test_bind_curve_fuzzer.cpp
@ -1146,11 +1165,22 @@ tests_test_connect_curve_fuzzer_LDADD = ${TESTUTIL_LIBS} ${FUZZING_ENGINE_LIB} \
tests_test_connect_curve_fuzzer_CPPFLAGS = ${TESTUTIL_CPPFLAGS}
tests_test_connect_curve_fuzzer_CXXFLAGS = -std=c++11
tests_test_z85_decode_fuzzer_DEPENDENCIES = src/libzmq.la
tests_test_z85_decode_fuzzer_SOURCES = tests/test_z85_decode_fuzzer.cpp
tests_test_z85_decode_fuzzer_LDADD = ${TESTUTIL_LIBS} ${FUZZING_ENGINE_LIB} \
$(top_builddir)/src/.libs/libzmq.a \
${src_libzmq_la_LIBADD}
tests_test_z85_decode_fuzzer_CPPFLAGS = ${TESTUTIL_CPPFLAGS}
tests_test_z85_decode_fuzzer_CXXFLAGS = -std=c++11
endif
FUZZINGdir = ${prefix}/${FUZZING_INSTALLDIR}
FUZZING_PROGRAMS = ${fuzzer_apps}
else
test_apps += tests/test_bind_null_fuzzer \
tests/test_connect_null_fuzzer
tests/test_connect_null_fuzzer \
tests/test_bind_fuzzer \
tests/test_connect_fuzzer
tests_test_bind_null_fuzzer_SOURCES = tests/test_bind_null_fuzzer.cpp
tests_test_bind_null_fuzzer_LDADD = ${TESTUTIL_LIBS} src/libzmq.la
@ -1160,9 +1190,18 @@ tests_test_connect_null_fuzzer_SOURCES = tests/test_connect_null_fuzzer.cpp
tests_test_connect_null_fuzzer_LDADD = ${TESTUTIL_LIBS} src/libzmq.la
tests_test_connect_null_fuzzer_CPPFLAGS = ${TESTUTIL_CPPFLAGS}
tests_test_bind_fuzzer_SOURCES = tests/test_bind_fuzzer.cpp
tests_test_bind_fuzzer_LDADD = ${TESTUTIL_LIBS} src/libzmq.la
tests_test_bind_fuzzer_CPPFLAGS = ${TESTUTIL_CPPFLAGS}
tests_test_connect_fuzzer_SOURCES = tests/test_connect_fuzzer.cpp
tests_test_connect_fuzzer_LDADD = ${TESTUTIL_LIBS} src/libzmq.la
tests_test_connect_fuzzer_CPPFLAGS = ${TESTUTIL_CPPFLAGS}
if HAVE_CURVE
test_apps += tests/test_bind_curve_fuzzer \
tests/test_connect_curve_fuzzer
tests/test_connect_curve_fuzzer \
tests/test_z85_decode_fuzzer
tests_test_bind_curve_fuzzer_SOURCES = tests/test_bind_curve_fuzzer.cpp
tests_test_bind_curve_fuzzer_LDADD = ${TESTUTIL_LIBS} src/libzmq.la
@ -1171,6 +1210,11 @@ tests_test_bind_curve_fuzzer_CPPFLAGS = ${TESTUTIL_CPPFLAGS}
tests_test_connect_curve_fuzzer_SOURCES = tests/test_connect_curve_fuzzer.cpp
tests_test_connect_curve_fuzzer_LDADD = ${TESTUTIL_LIBS} src/libzmq.la
tests_test_connect_curve_fuzzer_CPPFLAGS = ${TESTUTIL_CPPFLAGS}
tests_test_z85_decode_fuzzer_SOURCES = tests/test_z85_decode_fuzzer.cpp
tests_test_z85_decode_fuzzer_LDADD = ${TESTUTIL_LIBS} src/libzmq.la
tests_test_z85_decode_fuzzer_CPPFLAGS = ${TESTUTIL_CPPFLAGS}
endif
endif
if ENABLE_STATIC

4
tests/CMakeLists.txt
View File

@ -75,13 +75,13 @@ set(tests
test_mock_pub_sub)
if(NOT WIN32)
list(APPEND tests test_security_gssapi test_socks test_connect_null_fuzzer test_bind_null_fuzzer)
list(APPEND tests test_security_gssapi test_socks test_connect_null_fuzzer test_bind_null_fuzzer test_connect_fuzzer test_bind_fuzzer)
endif()
if(ZMQ_HAVE_CURVE)
list(APPEND tests test_security_curve)
if(NOT WIN32)
list(APPEND tests test_connect_curve_fuzzer test_bind_curve_fuzzer)
list(APPEND tests test_connect_curve_fuzzer test_bind_curve_fuzzer test_z85_decode_fuzzer)
endif()
endif()

71
tests/test_bind_fuzzer.cpp Normal file
View File

@ -0,0 +1,71 @@
/*
Copyright (c) 2020 Contributors as noted in the AUTHORS file
This file is part of libzmq, the ZeroMQ core engine in C++.
libzmq is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
As a special exception, the Contributors give you permission to link
this library with independent modules to produce an executable,
regardless of the license terms of these independent modules, and to
copy and distribute the resulting executable under terms of your choice,
provided that you also meet, for each linked independent module, the
terms and conditions of the license of that module. An independent
module is a module which is not derived from or based on this library.
If you modify this library, you must extend this exception to your
version of the library.
libzmq is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef ZMQ_USE_FUZZING_ENGINE
#include <fuzzer/FuzzedDataProvider.h>
#endif
#include <string>
#include "testutil.hpp"
#include "testutil_unity.hpp"
// Test that zmq_bind can handle malformed strings
extern "C" int LLVMFuzzerTestOneInput (const uint8_t *data, size_t size)
{
setup_test_context ();
std::string my_endpoint (reinterpret_cast<const char *> (data), size);
void *socket = test_context_socket (ZMQ_PUB);
zmq_bind (socket, my_endpoint.c_str ());
test_context_socket_close_zero_linger (socket);
teardown_test_context ();
return 0;
}
#ifndef ZMQ_USE_FUZZING_ENGINE
void test_bind_fuzzer ()
{
uint8_t buffer[32] = {0};
TEST_ASSERT_SUCCESS_ERRNO (
LLVMFuzzerTestOneInput (buffer, sizeof (buffer)));
}
int main (int argc, char **argv)
{
setup_test_environment ();
UNITY_BEGIN ();
RUN_TEST (test_bind_fuzzer);
return UNITY_END ();
}
#endif

71
tests/test_connect_fuzzer.cpp Normal file
View File

@ -0,0 +1,71 @@
/*
Copyright (c) 2020 Contributors as noted in the AUTHORS file
This file is part of libzmq, the ZeroMQ core engine in C++.
libzmq is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
As a special exception, the Contributors give you permission to link
this library with independent modules to produce an executable,
regardless of the license terms of these independent modules, and to
copy and distribute the resulting executable under terms of your choice,
provided that you also meet, for each linked independent module, the
terms and conditions of the license of that module. An independent
module is a module which is not derived from or based on this library.
If you modify this library, you must extend this exception to your
version of the library.
libzmq is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef ZMQ_USE_FUZZING_ENGINE
#include <fuzzer/FuzzedDataProvider.h>
#endif
#include <string>
#include "testutil.hpp"
#include "testutil_unity.hpp"
// Test that zmq_connect can handle malformed strings
extern "C" int LLVMFuzzerTestOneInput (const uint8_t *data, size_t size)
{
setup_test_context ();
std::string my_endpoint (reinterpret_cast<const char *> (data), size);
void *socket = test_context_socket (ZMQ_PUB);
zmq_connect (socket, my_endpoint.c_str ());
test_context_socket_close_zero_linger (socket);
teardown_test_context ();
return 0;
}
#ifndef ZMQ_USE_FUZZING_ENGINE
void test_connect_fuzzer ()
{
uint8_t buffer[32] = {0};
TEST_ASSERT_SUCCESS_ERRNO (
LLVMFuzzerTestOneInput (buffer, sizeof (buffer)));
}
int main (int argc, char **argv)
{
setup_test_environment ();
UNITY_BEGIN ();
RUN_TEST (test_connect_fuzzer);
return UNITY_END ();
}
#endif

75
tests/test_z85_decode_fuzzer.cpp Normal file
View File

@ -0,0 +1,75 @@
/*
Copyright (c) 2020 Contributors as noted in the AUTHORS file
This file is part of libzmq, the ZeroMQ core engine in C++.
libzmq is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
As a special exception, the Contributors give you permission to link
this library with independent modules to produce an executable,
regardless of the license terms of these independent modules, and to
copy and distribute the resulting executable under terms of your choice,
provided that you also meet, for each linked independent module, the
terms and conditions of the license of that module. An independent
module is a module which is not derived from or based on this library.
If you modify this library, you must extend this exception to your
version of the library.
libzmq is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef ZMQ_USE_FUZZING_ENGINE
#include <fuzzer/FuzzedDataProvider.h>
#endif
#include <string>
#include <stdlib.h>
#include "testutil.hpp"
#include "testutil_unity.hpp"
extern "C" int LLVMFuzzerTestOneInput (const uint8_t *data, size_t size)
{
uint8_t *secret_key;
// As per API definition, input must be divisible by 5, so truncate it if it's not
size -= size % 5;
// As per API definition, the destination must be at least 0.8 times the input data
TEST_ASSERT_NOT_NULL (secret_key = (uint8_t *) malloc (size * 4 / 5));
std::string z85_secret_key (reinterpret_cast<const char *> (data), size);
TEST_ASSERT_NOT_NULL (zmq_z85_decode (secret_key, z85_secret_key.c_str ()));
free (secret_key);
return 0;
}
#ifndef ZMQ_USE_FUZZING_ENGINE
void test_bind_null_fuzzer ()
{
uint8_t buffer[32] = {0};
TEST_ASSERT_SUCCESS_ERRNO (
LLVMFuzzerTestOneInput (buffer, sizeof (buffer)));
}
int main (int argc, char **argv)
{
setup_test_environment ();
UNITY_BEGIN ();
RUN_TEST (test_bind_null_fuzzer);
return UNITY_END ();
}
#endif