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95 lines
2.6 KiB
C++
95 lines
2.6 KiB
C++
/* SPDX-License-Identifier: MPL-2.0 */
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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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// As per API by default there's no limit to the size of a message,
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// but the sanitizer allocator will barf over a gig or so
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int64_t max_msg_size = 64 * 1024 * 1024;
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (client, ZMQ_MAXMSGSIZE, &max_msg_size, sizeof (int64_t)));
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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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zmq_msg_init (&msg);
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}
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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, num_cases = 0;
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if (fuzzer_corpus_encode (
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"tests/libzmq-fuzz-corpora/test_connect_null_fuzzer_seed_corpus",
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&data, &len, &num_cases)
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!= 0)
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exit (77);
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while (num_cases-- > 0) {
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TEST_ASSERT_SUCCESS_ERRNO (
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LLVMFuzzerTestOneInput (data[num_cases], len[num_cases]));
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free (data[num_cases]);
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}
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free (data);
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free (len);
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}
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int main (int argc, char **argv)
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{
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LIBZMQ_UNUSED (argc);
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LIBZMQ_UNUSED (argv);
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setup_test_environment ();
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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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