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https://github.com/zeromq/libzmq.git
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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
578 lines
18 KiB
C++
578 lines
18 KiB
C++
/* SPDX-License-Identifier: MPL-2.0 */
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// TODO remove this workaround for handling libsodium
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// To define SIZE_MAX with older compilers
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#define __STDC_LIMIT_MACROS
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#if defined ZMQ_CUSTOM_PLATFORM_HPP
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#include "platform.hpp"
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#else
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#include "../src/platform.hpp"
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#endif
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#ifndef ZMQ_USE_LIBSODIUM
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#define ZMQ_USE_LIBSODIUM
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#endif
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#include "testutil.hpp"
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#include "testutil_security.hpp"
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#include <unity.h>
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#include "../src/curve_client_tools.hpp"
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#include "../src/random.hpp"
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char error_message_buffer[256];
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void *handler;
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void *zap_thread;
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void *server;
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void *server_mon;
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char my_endpoint[MAX_SOCKET_STRING];
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void setUp ()
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{
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setup_test_context ();
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setup_context_and_server_side (&handler, &zap_thread, &server, &server_mon,
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my_endpoint);
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}
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void tearDown ()
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{
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shutdown_context_and_server_side (zap_thread, server, server_mon, handler);
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teardown_test_context ();
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}
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const int timeout = 250;
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const char large_routing_id[] = "0123456789012345678901234567890123456789"
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"0123456789012345678901234567890123456789"
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"0123456789012345678901234567890123456789"
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"0123456789012345678901234567890123456789"
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"0123456789012345678901234567890123456789"
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"0123456789012345678901234567890123456789"
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"012345678901234";
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static void zap_handler_large_routing_id (void * /*unused_*/)
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{
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zap_handler_generic (zap_ok, large_routing_id);
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}
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void expect_new_client_curve_bounce_fail (const char *server_public_,
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const char *client_public_,
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const char *client_secret_,
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char *my_endpoint_,
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void *server_,
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void **client_mon_ = NULL,
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int expected_client_event_ = 0,
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int expected_client_value_ = 0)
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{
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curve_client_data_t curve_client_data = {server_public_, client_public_,
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client_secret_};
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expect_new_client_bounce_fail (
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my_endpoint_, server_, socket_config_curve_client, &curve_client_data,
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client_mon_, expected_client_event_, expected_client_value_);
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}
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void test_null_key (void *server_,
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void *server_mon_,
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char *my_endpoint_,
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char *server_public_,
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char *client_public_,
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char *client_secret_)
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{
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expect_new_client_curve_bounce_fail (server_public_, client_public_,
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client_secret_, my_endpoint_, server_);
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int handshake_failed_encryption_event_count =
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expect_monitor_event_multiple (server_mon_,
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ZMQ_EVENT_HANDSHAKE_FAILED_PROTOCOL,
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ZMQ_PROTOCOL_ERROR_ZMTP_CRYPTOGRAPHIC);
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// handshake_failed_encryption_event_count should be at least two because
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// expect_bounce_fail involves two exchanges
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// however, with valgrind we see only one event (maybe the next one takes
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// very long, or does not happen at all because something else takes very
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// long)
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fprintf (stderr,
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"count of "
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"ZMQ_EVENT_HANDSHAKE_FAILED_PROTOCOL/"
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"ZMQ_PROTOCOL_ERROR_ZMTP_CRYPTOGRAPHIC events: %i\n",
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handshake_failed_encryption_event_count);
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}
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void test_curve_security_with_valid_credentials ()
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{
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curve_client_data_t curve_client_data = {
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valid_server_public, valid_client_public, valid_client_secret};
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void *client_mon;
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void *client = create_and_connect_client (
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my_endpoint, socket_config_curve_client, &curve_client_data, &client_mon);
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bounce (server, client);
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test_context_socket_close (client);
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int event = get_monitor_event_with_timeout (server_mon, NULL, NULL, -1);
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assert (event == ZMQ_EVENT_HANDSHAKE_SUCCEEDED);
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assert_no_more_monitor_events_with_timeout (server_mon, timeout);
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event = get_monitor_event_with_timeout (client_mon, NULL, NULL, -1);
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assert (event == ZMQ_EVENT_HANDSHAKE_SUCCEEDED);
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assert_no_more_monitor_events_with_timeout (client_mon, timeout);
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test_context_socket_close (client_mon);
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}
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void test_curve_security_with_bogus_client_credentials ()
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{
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// This must be caught by the ZAP handler
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char bogus_public[41];
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char bogus_secret[41];
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zmq_curve_keypair (bogus_public, bogus_secret);
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expect_new_client_curve_bounce_fail (
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valid_server_public, bogus_public, bogus_secret, my_endpoint, server,
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NULL, ZMQ_EVENT_HANDSHAKE_FAILED_AUTH, 400);
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int server_event_count = 0;
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server_event_count = expect_monitor_event_multiple (
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server_mon, ZMQ_EVENT_HANDSHAKE_FAILED_AUTH, 400);
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TEST_ASSERT_LESS_OR_EQUAL_INT (1, server_event_count);
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// there may be more than one ZAP request due to repeated attempts by the client
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TEST_ASSERT (0 == server_event_count
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|| 1 <= zmq_atomic_counter_value (zap_requests_handled));
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}
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void expect_zmtp_mechanism_mismatch (void *client_,
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char *my_endpoint_,
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void *server_,
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void *server_mon_)
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{
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// This must be caught by the curve_server class, not passed to ZAP
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (client_, my_endpoint_));
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expect_bounce_fail (server_, client_);
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test_context_socket_close_zero_linger (client_);
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expect_monitor_event_multiple (server_mon_,
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ZMQ_EVENT_HANDSHAKE_FAILED_PROTOCOL,
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ZMQ_PROTOCOL_ERROR_ZMTP_MECHANISM_MISMATCH);
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TEST_ASSERT_EQUAL_INT (0, zmq_atomic_counter_value (zap_requests_handled));
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}
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void test_curve_security_with_null_client_credentials ()
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{
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void *client = test_context_socket (ZMQ_DEALER);
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expect_zmtp_mechanism_mismatch (client, my_endpoint, server, server_mon);
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}
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void test_curve_security_with_plain_client_credentials ()
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{
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void *client = test_context_socket (ZMQ_DEALER);
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (client, ZMQ_PLAIN_USERNAME, "admin", 5));
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (client, ZMQ_PLAIN_PASSWORD, "password", 8));
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expect_zmtp_mechanism_mismatch (client, my_endpoint, server, server_mon);
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}
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void test_curve_security_unauthenticated_message ()
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{
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// Unauthenticated messages from a vanilla socket shouldn't be received
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fd_t s = connect_socket (my_endpoint);
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// send anonymous ZMTP/1.0 greeting
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send (s, "\x01\x00", 2, 0);
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// send sneaky message that shouldn't be received
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send (s, "\x08\x00sneaky\0", 9, 0);
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zmq_setsockopt (server, ZMQ_RCVTIMEO, &timeout, sizeof (timeout));
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char *buf = s_recv (server);
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TEST_ASSERT_NULL_MESSAGE (buf, "Received unauthenticated message");
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close (s);
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}
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void send_all (fd_t fd_, const char *data_, socket_size_t size_)
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{
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while (size_ > 0) {
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int res = send (fd_, data_, size_, 0);
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TEST_ASSERT_GREATER_THAN_INT (0, res);
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size_ -= res;
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data_ += res;
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}
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}
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template <size_t N> void send (fd_t fd_, const char (&data_)[N])
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{
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send_all (fd_, data_, N - 1);
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}
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template <size_t N> void send (fd_t fd_, const uint8_t (&data_)[N])
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{
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send_all (fd_, reinterpret_cast<const char *> (&data_), N);
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}
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void test_curve_security_invalid_hello_wrong_length ()
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{
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fd_t s = connect_socket (my_endpoint);
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send (s, zmtp_greeting_curve);
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// send CURVE HELLO of wrong size
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send (s, "\x04\x06\x05HELLO");
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expect_monitor_event_multiple (
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server_mon, ZMQ_EVENT_HANDSHAKE_FAILED_PROTOCOL,
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ZMQ_PROTOCOL_ERROR_ZMTP_MALFORMED_COMMAND_HELLO);
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close (s);
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}
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const size_t hello_length = 200;
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const size_t welcome_length = 168;
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zmq::curve_client_tools_t make_curve_client_tools ()
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{
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uint8_t valid_client_secret_decoded[32];
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uint8_t valid_client_public_decoded[32];
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zmq_z85_decode (valid_client_public_decoded, valid_client_public);
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zmq_z85_decode (valid_client_secret_decoded, valid_client_secret);
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uint8_t valid_server_public_decoded[32];
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zmq_z85_decode (valid_server_public_decoded, valid_server_public);
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return zmq::curve_client_tools_t (valid_client_public_decoded,
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valid_client_secret_decoded,
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valid_server_public_decoded);
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}
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// same as htonll, which is only available on few platforms (recent Windows, but not on Linux, e.g.(
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static uint64_t host_to_network (uint64_t value_)
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{
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// The answer is 42
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static const int num = 42;
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// Check the endianness
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if (*reinterpret_cast<const char *> (&num) == num) {
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const uint32_t high_part = htonl (static_cast<uint32_t> (value_ >> 32));
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const uint32_t low_part =
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htonl (static_cast<uint32_t> (value_ & 0xFFFFFFFFLL));
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return (static_cast<uint64_t> (low_part) << 32) | high_part;
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}
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return value_;
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}
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template <size_t N> void send_command (fd_t s_, char (&command_)[N])
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{
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if (N < 256) {
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send (s_, "\x04");
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char len = (char) N;
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send_all (s_, &len, 1);
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} else {
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send (s_, "\x06");
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uint64_t len = host_to_network (N);
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send_all (s_, reinterpret_cast<char *> (&len), 8);
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}
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send_all (s_, command_, N);
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}
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void test_curve_security_invalid_hello_command_name ()
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{
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fd_t s = connect_socket (my_endpoint);
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send (s, zmtp_greeting_curve);
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zmq::curve_client_tools_t tools = make_curve_client_tools ();
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// send CURVE HELLO with a misspelled command name (but otherwise correct)
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char hello[hello_length];
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TEST_ASSERT_SUCCESS_ERRNO (tools.produce_hello (hello, 0));
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hello[5] = 'X';
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send_command (s, hello);
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expect_monitor_event_multiple (server_mon,
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ZMQ_EVENT_HANDSHAKE_FAILED_PROTOCOL,
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ZMQ_PROTOCOL_ERROR_ZMTP_UNEXPECTED_COMMAND);
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close (s);
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}
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void test_curve_security_invalid_hello_version ()
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{
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fd_t s = connect_socket (my_endpoint);
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send (s, zmtp_greeting_curve);
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zmq::curve_client_tools_t tools = make_curve_client_tools ();
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// send CURVE HELLO with a wrong version number (but otherwise correct)
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char hello[hello_length];
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TEST_ASSERT_SUCCESS_ERRNO (tools.produce_hello (hello, 0));
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hello[6] = 2;
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send_command (s, hello);
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expect_monitor_event_multiple (
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server_mon, ZMQ_EVENT_HANDSHAKE_FAILED_PROTOCOL,
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ZMQ_PROTOCOL_ERROR_ZMTP_MALFORMED_COMMAND_HELLO);
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close (s);
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}
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void flush_read (fd_t fd_)
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{
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int res;
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char buf[256];
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while ((res = recv (fd_, buf, 256, 0)) == 256) {
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}
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TEST_ASSERT_NOT_EQUAL (-1, res);
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}
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void recv_all (fd_t fd_, uint8_t *data_, socket_size_t len_)
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{
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socket_size_t received = 0;
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while (received < len_) {
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int res = recv (fd_, reinterpret_cast<char *> (data_), len_, 0);
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TEST_ASSERT_GREATER_THAN_INT (0, res);
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data_ += res;
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received += res;
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}
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}
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void recv_greeting (fd_t fd_)
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{
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uint8_t greeting[64];
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recv_all (fd_, greeting, 64);
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// TODO assert anything about the greeting received from the server?
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}
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fd_t connect_exchange_greeting_and_send_hello (
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char *my_endpoint_, zmq::curve_client_tools_t &tools_)
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{
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fd_t s = connect_socket (my_endpoint_);
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send (s, zmtp_greeting_curve);
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recv_greeting (s);
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// send valid CURVE HELLO
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char hello[hello_length];
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TEST_ASSERT_SUCCESS_ERRNO (tools_.produce_hello (hello, 0));
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send_command (s, hello);
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return s;
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}
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void test_curve_security_invalid_initiate_wrong_length ()
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{
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zmq::curve_client_tools_t tools = make_curve_client_tools ();
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fd_t s = connect_exchange_greeting_and_send_hello (my_endpoint, tools);
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// receive but ignore WELCOME
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flush_read (s);
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int res = get_monitor_event_with_timeout (server_mon, NULL, NULL, timeout);
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TEST_ASSERT_EQUAL_INT (-1, res);
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send (s, "\x04\x09\x08INITIATE");
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expect_monitor_event_multiple (
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server_mon, ZMQ_EVENT_HANDSHAKE_FAILED_PROTOCOL,
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ZMQ_PROTOCOL_ERROR_ZMTP_MALFORMED_COMMAND_INITIATE);
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close (s);
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}
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fd_t connect_exchange_greeting_and_hello_welcome (
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char *my_endpoint_,
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void *server_mon_,
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int timeout_,
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zmq::curve_client_tools_t &tools_)
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{
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fd_t s = connect_exchange_greeting_and_send_hello (my_endpoint_, tools_);
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// receive but ignore WELCOME
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uint8_t welcome[welcome_length + 2];
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recv_all (s, welcome, welcome_length + 2);
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uint8_t cn_precom[crypto_box_BEFORENMBYTES];
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TEST_ASSERT_SUCCESS_ERRNO (
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tools_.process_welcome (welcome + 2, welcome_length, cn_precom));
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const int res =
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get_monitor_event_with_timeout (server_mon_, NULL, NULL, timeout_);
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TEST_ASSERT_EQUAL_INT (-1, res);
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return s;
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}
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void test_curve_security_invalid_initiate_command_name ()
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{
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zmq::curve_client_tools_t tools = make_curve_client_tools ();
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fd_t s = connect_exchange_greeting_and_hello_welcome (
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my_endpoint, server_mon, timeout, tools);
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char initiate[257];
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tools.produce_initiate (initiate, 257, 1, NULL, 0);
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// modify command name
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initiate[5] = 'X';
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send_command (s, initiate);
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expect_monitor_event_multiple (server_mon,
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ZMQ_EVENT_HANDSHAKE_FAILED_PROTOCOL,
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ZMQ_PROTOCOL_ERROR_ZMTP_UNEXPECTED_COMMAND);
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close (s);
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}
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void test_curve_security_invalid_initiate_command_encrypted_cookie ()
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{
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zmq::curve_client_tools_t tools = make_curve_client_tools ();
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fd_t s = connect_exchange_greeting_and_hello_welcome (
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my_endpoint, server_mon, timeout, tools);
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char initiate[257];
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tools.produce_initiate (initiate, 257, 1, NULL, 0);
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// make garbage from encrypted cookie
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initiate[30] = !initiate[30];
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send_command (s, initiate);
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expect_monitor_event_multiple (server_mon,
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ZMQ_EVENT_HANDSHAKE_FAILED_PROTOCOL,
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ZMQ_PROTOCOL_ERROR_ZMTP_CRYPTOGRAPHIC);
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close (s);
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}
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void test_curve_security_invalid_initiate_command_encrypted_content ()
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{
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zmq::curve_client_tools_t tools = make_curve_client_tools ();
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fd_t s = connect_exchange_greeting_and_hello_welcome (
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my_endpoint, server_mon, timeout, tools);
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char initiate[257];
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tools.produce_initiate (initiate, 257, 1, NULL, 0);
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// make garbage from encrypted content
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initiate[150] = !initiate[150];
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send_command (s, initiate);
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expect_monitor_event_multiple (server_mon,
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ZMQ_EVENT_HANDSHAKE_FAILED_PROTOCOL,
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ZMQ_PROTOCOL_ERROR_ZMTP_CRYPTOGRAPHIC);
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close (s);
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}
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void test_curve_security_invalid_keysize (void *ctx_)
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{
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// Check return codes for invalid buffer sizes
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void *client = zmq_socket (ctx_, ZMQ_DEALER);
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TEST_ASSERT_NOT_NULL (client);
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errno = 0;
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int rc =
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zmq_setsockopt (client, ZMQ_CURVE_SERVERKEY, valid_server_public, 123);
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assert (rc == -1 && errno == EINVAL);
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errno = 0;
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rc = zmq_setsockopt (client, ZMQ_CURVE_PUBLICKEY, valid_client_public, 123);
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assert (rc == -1 && errno == EINVAL);
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errno = 0;
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rc = zmq_setsockopt (client, ZMQ_CURVE_SECRETKEY, valid_client_secret, 123);
|
|
assert (rc == -1 && errno == EINVAL);
|
|
TEST_ASSERT_SUCCESS_ERRNO (zmq_close (client));
|
|
}
|
|
|
|
// TODO why isn't this const?
|
|
char null_key[] = "0000000000000000000000000000000000000000";
|
|
|
|
void test_null_server_key ()
|
|
{
|
|
// Check CURVE security with a null server key
|
|
// This will be caught by the curve_server class, not passed to ZAP
|
|
test_null_key (server, server_mon, my_endpoint, null_key,
|
|
valid_client_public, valid_client_secret);
|
|
}
|
|
|
|
void test_null_client_public_key ()
|
|
{
|
|
// Check CURVE security with a null client public key
|
|
// This will be caught by the curve_server class, not passed to ZAP
|
|
test_null_key (server, server_mon, my_endpoint, valid_server_public,
|
|
null_key, valid_client_secret);
|
|
}
|
|
|
|
void test_null_client_secret_key ()
|
|
{
|
|
// Check CURVE security with a null client public key
|
|
// This will be caught by the curve_server class, not passed to ZAP
|
|
test_null_key (server, server_mon, my_endpoint, valid_server_public,
|
|
valid_client_public, null_key);
|
|
}
|
|
|
|
|
|
int main (void)
|
|
{
|
|
if (!zmq_has ("curve")) {
|
|
printf ("CURVE encryption not installed, skipping test\n");
|
|
return 0;
|
|
}
|
|
|
|
zmq::random_open ();
|
|
|
|
setup_testutil_security_curve ();
|
|
|
|
|
|
setup_test_environment (180);
|
|
|
|
UNITY_BEGIN ();
|
|
RUN_TEST (test_curve_security_with_valid_credentials);
|
|
RUN_TEST (test_null_server_key);
|
|
RUN_TEST (test_null_client_public_key);
|
|
RUN_TEST (test_null_client_secret_key);
|
|
RUN_TEST (test_curve_security_with_bogus_client_credentials);
|
|
RUN_TEST (test_curve_security_with_null_client_credentials);
|
|
RUN_TEST (test_curve_security_with_plain_client_credentials);
|
|
RUN_TEST (test_curve_security_unauthenticated_message);
|
|
|
|
// tests with misbehaving CURVE client
|
|
RUN_TEST (test_curve_security_invalid_hello_wrong_length);
|
|
RUN_TEST (test_curve_security_invalid_hello_command_name);
|
|
RUN_TEST (test_curve_security_invalid_hello_version);
|
|
RUN_TEST (test_curve_security_invalid_initiate_wrong_length);
|
|
RUN_TEST (test_curve_security_invalid_initiate_command_name);
|
|
RUN_TEST (test_curve_security_invalid_initiate_command_encrypted_cookie);
|
|
RUN_TEST (test_curve_security_invalid_initiate_command_encrypted_content);
|
|
|
|
// TODO this requires a deviating test setup, must be moved to a separate executable/fixture
|
|
// test with a large routing id (resulting in large metadata)
|
|
fprintf (stderr,
|
|
"test_curve_security_with_valid_credentials (large routing id)\n");
|
|
setup_test_context ();
|
|
setup_context_and_server_side (&handler, &zap_thread, &server, &server_mon,
|
|
my_endpoint, &zap_handler_large_routing_id,
|
|
&socket_config_curve_server,
|
|
&valid_server_secret, large_routing_id);
|
|
test_curve_security_with_valid_credentials ();
|
|
shutdown_context_and_server_side (zap_thread, server, server_mon, handler);
|
|
teardown_test_context ();
|
|
|
|
void *ctx = zmq_ctx_new ();
|
|
test_curve_security_invalid_keysize (ctx);
|
|
TEST_ASSERT_SUCCESS_ERRNO (zmq_ctx_term (ctx));
|
|
|
|
zmq::random_close ();
|
|
|
|
return UNITY_END ();
|
|
}
|