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da31917f4f
Relicense permission collected from all relevant authors as tallied at: https://github.com/rlenferink/libzmq-relicense/blob/master/checklist.md The relicense grants are collected under RELICENSE/ and will be moved to the above repository in a later commit. Fixes https://github.com/zeromq/libzmq/issues/2376
99 lines
3.0 KiB
C++
99 lines
3.0 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 WebSocket engine handles invalid handshake when connecting
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// https://rfc.zeromq.org/spec/45/
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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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size_t my_endpoint_size = sizeof (my_endpoint);
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void *server = test_context_socket (ZMQ_DEALER);
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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 (server, ZMQ_MAXMSGSIZE, &max_msg_size, sizeof (int64_t)));
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TEST_ASSERT_SUCCESS_ERRNO (zmq_bind (server, "ws://127.0.0.1:*"));
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TEST_ASSERT_SUCCESS_ERRNO (zmq_getsockopt (server, ZMQ_LAST_ENDPOINT,
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my_endpoint, &my_endpoint_size));
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// Remove trailing /
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my_endpoint[my_endpoint_size - 2] = '\0';
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fd_t client = connect_socket (my_endpoint, AF_INET, IPPROTO_WS);
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void *client_good = test_context_socket (ZMQ_DEALER);
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my_endpoint[my_endpoint_size - 2] = '/';
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (client_good, my_endpoint));
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// If there is not enough data for a full handshake, just send what we can
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// Otherwise send websocket handshake first, as expected by the protocol
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uint8_t buf[256];
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if (size >= 192) {
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send (client, (void *) data, 192, MSG_NOSIGNAL);
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data += 192;
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size -= 192;
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}
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recv (client, buf, 256, MSG_DONTWAIT);
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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 (client, (const char *) data, size, MSG_NOSIGNAL);
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msleep (250);
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recv (client, buf, 256, MSG_DONTWAIT);
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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, server, 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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send_string_expect_success (client_good, "abc", 0);
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recv_string_expect_success (server, "abc", 0);
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close (client);
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test_context_socket_close_zero_linger (client_good);
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test_context_socket_close_zero_linger (server);
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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_bind_ws_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_bind_ws_fuzzer_seed_corpus", &data,
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&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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setup_test_environment ();
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UNITY_BEGIN ();
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RUN_TEST (test_bind_ws_fuzzer);
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return UNITY_END ();
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}
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#endif
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