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106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
/*
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Copyright (c) 2020 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef ZMQ_USE_FUZZING_ENGINE
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#include <fuzzer/FuzzedDataProvider.h>
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#endif
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#include "testutil.hpp"
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#include "testutil_unity.hpp"
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// Test that the ZMTP engine handles invalid handshake when connecting
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// https://rfc.zeromq.org/spec/37/
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extern "C" int LLVMFuzzerTestOneInput (const uint8_t *data, size_t size)
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{
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setup_test_context ();
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char my_endpoint[MAX_SOCKET_STRING];
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fd_t server = bind_socket_resolve_port ("127.0.0.1", "0", my_endpoint);
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void *client = test_context_socket (ZMQ_SUB);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (client, ZMQ_SUBSCRIBE, "", 0));
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (client, my_endpoint));
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fd_t server_accept =
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TEST_ASSERT_SUCCESS_RAW_ERRNO (accept (server, NULL, NULL));
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// If there is not enough data for a full greeting, just send what we can
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// Otherwise send greeting first, as expected by the protocol
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uint8_t buf[64];
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if (size >= 64) {
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send (server_accept, (void *) data, 64, MSG_NOSIGNAL);
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data += 64;
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size -= 64;
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}
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recv (server_accept, buf, 64, 0);
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msleep (250);
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for (ssize_t sent = 0; size > 0 && (sent != -1 || errno == EINTR);
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size -= sent > 0 ? sent : 0, data += sent > 0 ? sent : 0)
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sent = send (server_accept, (const char *) data, size, MSG_NOSIGNAL);
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msleep (250);
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zmq_msg_t msg;
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zmq_msg_init (&msg);
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while (-1 != zmq_msg_recv (&msg, client, ZMQ_DONTWAIT))
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zmq_msg_close (&msg);
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close (server_accept);
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close (server);
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test_context_socket_close_zero_linger (client);
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teardown_test_context ();
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return 0;
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}
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#ifndef ZMQ_USE_FUZZING_ENGINE
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void test_connect_null_fuzzer ()
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{
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uint8_t *data;
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size_t len;
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if (fuzzer_corpus_encode (
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"tests/fuzzer_corpora/test_connect_null_fuzzer.txt", &data, &len)
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!= 0)
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exit (77);
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TEST_ASSERT_SUCCESS_ERRNO (LLVMFuzzerTestOneInput (data, len));
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free (data);
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}
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int main (int argc, char **argv)
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{
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setup_test_environment (0);
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UNITY_BEGIN ();
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RUN_TEST (test_connect_null_fuzzer);
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return UNITY_END ();
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}
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#endif
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