static int dbus_read(pcap_t *handle, int max_packets, pcap_handler callback, u_char *user) { struct pcap_dbus *handlep = handle->priv; struct pcap_pkthdr pkth; DBusMessage *message; char *raw_msg; int raw_msg_len; int count = 0; message = dbus_connection_pop_message(handlep->conn); while (!message) { /* XXX handle->opt.timeout = timeout_ms; */ if (!dbus_connection_read_write(handlep->conn, 100)) { pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Connection closed"); return -1; } if (handle->break_loop) { handle->break_loop = 0; return -2; } message = dbus_connection_pop_message(handlep->conn); } if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) { pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Disconnected"); return -1; } if (dbus_message_marshal(message, &raw_msg, &raw_msg_len)) { pkth.caplen = pkth.len = raw_msg_len; /* pkth.caplen = min (payload_len, handle->snapshot); */ gettimeofday(&pkth.ts, NULL); if (handle->fcode.bf_insns == NULL || bpf_filter(handle->fcode.bf_insns, (u_char *)raw_msg, pkth.len, pkth.caplen)) { handlep->packets_read++; callback(user, &pkth, (u_char *)raw_msg); count++; } dbus_free(raw_msg); } return count; }
/** * This function runs in a separate thread. * * It is started in initSignalWatcher() * * @param user_data (Ignored) */ static void* signalWatch(void* user_data) { Signals* signals = user_data; DBusMessage* m; pthread_mutex_lock(signals->startLock); pthread_mutex_unlock(signals->startLock); while(signals->work) { pthread_mutex_lock(&signals->dbus_mutex); dbus_connection_read_write(signals->con, 100); m = dbus_connection_pop_message(signals->con); pthread_mutex_unlock(&signals->dbus_mutex); if(m != NULL) { char* str = PrintDBusMessage(m); if(dbus_message_get_type(m) == DBUS_MESSAGE_TYPE_SIGNAL) { char* marshalled; int size; dbus_message_marshal(m, &marshalled, &size); writeAllPort(signals->service, marshalled, size); free(marshalled); } dbus_message_unref(m); } else { /* * pthread's mutexes are not fair (it does not prevent starvation), * the signalWatch() thread might hog the mutex all for itself. * * Other threads might require the dbus connection (and the mutex) * for adding/removing watches. One way to minimize this starvation * is to yield control to another thread when the signalWatch() * thread released the mutex. * * This is a sub-optimal solution. The best solution would be a fair mutex. */ sched_yield(); } } fprintf(stderr, "signalWatch thread stopped\n"); return NULL; }
/** * @ingroup DBusMessageInternals * Unit test for DBusMessage. * * @returns #TRUE on success. */ dbus_bool_t _dbus_message_test (const char *test_data_dir) { DBusMessage *message, *message_without_unix_fds; DBusMessageLoader *loader; int i; const char *data; DBusMessage *copy; const char *name1; const char *name2; const dbus_uint32_t our_uint32_array[] = { 0x12345678, 0x23456781, 0x34567812, 0x45678123 }; const dbus_int32_t our_int32_array[] = { 0x12345678, -0x23456781, 0x34567812, -0x45678123 }; const dbus_uint32_t *v_ARRAY_UINT32 = our_uint32_array; const dbus_int32_t *v_ARRAY_INT32 = our_int32_array; #ifdef DBUS_HAVE_INT64 const dbus_uint64_t our_uint64_array[] = { 0x12345678, 0x23456781, 0x34567812, 0x45678123 }; const dbus_int64_t our_int64_array[] = { 0x12345678, -0x23456781, 0x34567812, -0x45678123 }; const dbus_uint64_t *v_ARRAY_UINT64 = our_uint64_array; const dbus_int64_t *v_ARRAY_INT64 = our_int64_array; #endif const char *our_string_array[] = { "Foo", "bar", "", "woo woo woo woo" }; const char **v_ARRAY_STRING = our_string_array; const double our_double_array[] = { 0.1234, 9876.54321, -300.0 }; const double *v_ARRAY_DOUBLE = our_double_array; const unsigned char our_byte_array[] = { 'a', 'b', 'c', 234 }; const unsigned char *v_ARRAY_BYTE = our_byte_array; const dbus_bool_t our_boolean_array[] = { TRUE, FALSE, TRUE, TRUE, FALSE }; const dbus_bool_t *v_ARRAY_BOOLEAN = our_boolean_array; char sig[64]; const char *s; const char *v_STRING; double v_DOUBLE; dbus_int16_t v_INT16; dbus_uint16_t v_UINT16; dbus_int32_t v_INT32; dbus_uint32_t v_UINT32; #ifdef DBUS_HAVE_INT64 dbus_int64_t v_INT64; dbus_uint64_t v_UINT64; #endif unsigned char v_BYTE; unsigned char v2_BYTE; dbus_bool_t v_BOOLEAN; DBusMessageIter iter, array_iter, struct_iter; #ifdef HAVE_UNIX_FD_PASSING int v_UNIX_FD; #endif char **decomposed; message = dbus_message_new_method_call ("org.freedesktop.DBus.TestService", "/org/freedesktop/TestPath", "Foo.TestInterface", "TestMethod"); _dbus_assert (dbus_message_has_destination (message, "org.freedesktop.DBus.TestService")); _dbus_assert (dbus_message_is_method_call (message, "Foo.TestInterface", "TestMethod")); _dbus_assert (strcmp (dbus_message_get_path (message), "/org/freedesktop/TestPath") == 0); dbus_message_set_serial (message, 1234); /* string length including nul byte not a multiple of 4 */ if (!dbus_message_set_sender (message, "org.foo.bar1")) _dbus_assert_not_reached ("out of memory"); _dbus_assert (dbus_message_has_sender (message, "org.foo.bar1")); dbus_message_set_reply_serial (message, 5678); _dbus_verbose_bytes_of_string (&message->header.data, 0, _dbus_string_get_length (&message->header.data)); _dbus_verbose_bytes_of_string (&message->body, 0, _dbus_string_get_length (&message->body)); if (!dbus_message_set_sender (message, NULL)) _dbus_assert_not_reached ("out of memory"); _dbus_verbose_bytes_of_string (&message->header.data, 0, _dbus_string_get_length (&message->header.data)); _dbus_verbose_bytes_of_string (&message->body, 0, _dbus_string_get_length (&message->body)); _dbus_assert (!dbus_message_has_sender (message, "org.foo.bar1")); _dbus_assert (dbus_message_get_serial (message) == 1234); _dbus_assert (dbus_message_get_reply_serial (message) == 5678); _dbus_assert (dbus_message_has_destination (message, "org.freedesktop.DBus.TestService")); _dbus_assert (dbus_message_get_no_reply (message) == FALSE); dbus_message_set_no_reply (message, TRUE); _dbus_assert (dbus_message_get_no_reply (message) == TRUE); dbus_message_set_no_reply (message, FALSE); _dbus_assert (dbus_message_get_no_reply (message) == FALSE); /* Set/get some header fields */ if (!dbus_message_set_path (message, "/foo")) _dbus_assert_not_reached ("out of memory"); _dbus_assert (strcmp (dbus_message_get_path (message), "/foo") == 0); if (!dbus_message_set_interface (message, "org.Foo")) _dbus_assert_not_reached ("out of memory"); _dbus_assert (strcmp (dbus_message_get_interface (message), "org.Foo") == 0); if (!dbus_message_set_member (message, "Bar")) _dbus_assert_not_reached ("out of memory"); _dbus_assert (strcmp (dbus_message_get_member (message), "Bar") == 0); /* Set/get them with longer values */ if (!dbus_message_set_path (message, "/foo/bar")) _dbus_assert_not_reached ("out of memory"); _dbus_assert (strcmp (dbus_message_get_path (message), "/foo/bar") == 0); if (!dbus_message_set_interface (message, "org.Foo.Bar")) _dbus_assert_not_reached ("out of memory"); _dbus_assert (strcmp (dbus_message_get_interface (message), "org.Foo.Bar") == 0); if (!dbus_message_set_member (message, "BarFoo")) _dbus_assert_not_reached ("out of memory"); _dbus_assert (strcmp (dbus_message_get_member (message), "BarFoo") == 0); /* Realloc shorter again */ if (!dbus_message_set_path (message, "/foo")) _dbus_assert_not_reached ("out of memory"); _dbus_assert (strcmp (dbus_message_get_path (message), "/foo") == 0); if (!dbus_message_set_interface (message, "org.Foo")) _dbus_assert_not_reached ("out of memory"); _dbus_assert (strcmp (dbus_message_get_interface (message), "org.Foo") == 0); if (!dbus_message_set_member (message, "Bar")) _dbus_assert_not_reached ("out of memory"); _dbus_assert (strcmp (dbus_message_get_member (message), "Bar") == 0); /* Path decomposing */ dbus_message_set_path (message, NULL); dbus_message_get_path_decomposed (message, &decomposed); _dbus_assert (decomposed == NULL); dbus_free_string_array (decomposed); dbus_message_set_path (message, "/"); dbus_message_get_path_decomposed (message, &decomposed); _dbus_assert (decomposed != NULL); _dbus_assert (decomposed[0] == NULL); dbus_free_string_array (decomposed); dbus_message_set_path (message, "/a/b"); dbus_message_get_path_decomposed (message, &decomposed); _dbus_assert (decomposed != NULL); _dbus_assert (strcmp (decomposed[0], "a") == 0); _dbus_assert (strcmp (decomposed[1], "b") == 0); _dbus_assert (decomposed[2] == NULL); dbus_free_string_array (decomposed); dbus_message_set_path (message, "/spam/eggs"); dbus_message_get_path_decomposed (message, &decomposed); _dbus_assert (decomposed != NULL); _dbus_assert (strcmp (decomposed[0], "spam") == 0); _dbus_assert (strcmp (decomposed[1], "eggs") == 0); _dbus_assert (decomposed[2] == NULL); dbus_free_string_array (decomposed); dbus_message_unref (message); /* Test the vararg functions */ message = dbus_message_new_method_call ("org.freedesktop.DBus.TestService", "/org/freedesktop/TestPath", "Foo.TestInterface", "TestMethod"); dbus_message_set_serial (message, 1); dbus_message_set_reply_serial (message, 5678); v_INT16 = -0x123; v_UINT16 = 0x123; v_INT32 = -0x12345678; v_UINT32 = 0x12300042; #ifdef DBUS_HAVE_INT64 v_INT64 = DBUS_INT64_CONSTANT (-0x123456789abcd); v_UINT64 = DBUS_UINT64_CONSTANT (0x123456789abcd); #endif v_STRING = "Test string"; v_DOUBLE = 3.14159; v_BOOLEAN = TRUE; v_BYTE = 42; v2_BYTE = 24; #ifdef HAVE_UNIX_FD_PASSING v_UNIX_FD = 1; #endif dbus_message_append_args (message, DBUS_TYPE_INT16, &v_INT16, DBUS_TYPE_UINT16, &v_UINT16, DBUS_TYPE_INT32, &v_INT32, DBUS_TYPE_UINT32, &v_UINT32, #ifdef DBUS_HAVE_INT64 DBUS_TYPE_INT64, &v_INT64, DBUS_TYPE_UINT64, &v_UINT64, #endif DBUS_TYPE_STRING, &v_STRING, DBUS_TYPE_DOUBLE, &v_DOUBLE, DBUS_TYPE_BOOLEAN, &v_BOOLEAN, DBUS_TYPE_BYTE, &v_BYTE, DBUS_TYPE_BYTE, &v2_BYTE, DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, &v_ARRAY_UINT32, _DBUS_N_ELEMENTS (our_uint32_array), DBUS_TYPE_ARRAY, DBUS_TYPE_INT32, &v_ARRAY_INT32, _DBUS_N_ELEMENTS (our_int32_array), #ifdef DBUS_HAVE_INT64 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT64, &v_ARRAY_UINT64, _DBUS_N_ELEMENTS (our_uint64_array), DBUS_TYPE_ARRAY, DBUS_TYPE_INT64, &v_ARRAY_INT64, _DBUS_N_ELEMENTS (our_int64_array), #endif DBUS_TYPE_ARRAY, DBUS_TYPE_DOUBLE, &v_ARRAY_DOUBLE, _DBUS_N_ELEMENTS (our_double_array), DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &v_ARRAY_BYTE, _DBUS_N_ELEMENTS (our_byte_array), DBUS_TYPE_ARRAY, DBUS_TYPE_BOOLEAN, &v_ARRAY_BOOLEAN, _DBUS_N_ELEMENTS (our_boolean_array), DBUS_TYPE_ARRAY, DBUS_TYPE_STRING, &v_ARRAY_STRING, _DBUS_N_ELEMENTS (our_string_array), DBUS_TYPE_INVALID); i = 0; sig[i++] = DBUS_TYPE_INT16; sig[i++] = DBUS_TYPE_UINT16; sig[i++] = DBUS_TYPE_INT32; sig[i++] = DBUS_TYPE_UINT32; #ifdef DBUS_HAVE_INT64 sig[i++] = DBUS_TYPE_INT64; sig[i++] = DBUS_TYPE_UINT64; #endif sig[i++] = DBUS_TYPE_STRING; sig[i++] = DBUS_TYPE_DOUBLE; sig[i++] = DBUS_TYPE_BOOLEAN; sig[i++] = DBUS_TYPE_BYTE; sig[i++] = DBUS_TYPE_BYTE; sig[i++] = DBUS_TYPE_ARRAY; sig[i++] = DBUS_TYPE_UINT32; sig[i++] = DBUS_TYPE_ARRAY; sig[i++] = DBUS_TYPE_INT32; #ifdef DBUS_HAVE_INT64 sig[i++] = DBUS_TYPE_ARRAY; sig[i++] = DBUS_TYPE_UINT64; sig[i++] = DBUS_TYPE_ARRAY; sig[i++] = DBUS_TYPE_INT64; #endif sig[i++] = DBUS_TYPE_ARRAY; sig[i++] = DBUS_TYPE_DOUBLE; sig[i++] = DBUS_TYPE_ARRAY; sig[i++] = DBUS_TYPE_BYTE; sig[i++] = DBUS_TYPE_ARRAY; sig[i++] = DBUS_TYPE_BOOLEAN; sig[i++] = DBUS_TYPE_ARRAY; sig[i++] = DBUS_TYPE_STRING; message_without_unix_fds = dbus_message_copy(message); _dbus_assert(message_without_unix_fds); #ifdef HAVE_UNIX_FD_PASSING dbus_message_append_args (message, DBUS_TYPE_UNIX_FD, &v_UNIX_FD, DBUS_TYPE_INVALID); sig[i++] = DBUS_TYPE_UNIX_FD; #endif sig[i++] = DBUS_TYPE_INVALID; _dbus_assert (i < (int) _DBUS_N_ELEMENTS (sig)); _dbus_verbose ("HEADER\n"); _dbus_verbose_bytes_of_string (&message->header.data, 0, _dbus_string_get_length (&message->header.data)); _dbus_verbose ("BODY\n"); _dbus_verbose_bytes_of_string (&message->body, 0, _dbus_string_get_length (&message->body)); _dbus_verbose ("Signature expected \"%s\" actual \"%s\"\n", sig, dbus_message_get_signature (message)); s = dbus_message_get_signature (message); _dbus_assert (dbus_message_has_signature (message, sig)); _dbus_assert (strcmp (s, sig) == 0); verify_test_message (message); copy = dbus_message_copy (message); _dbus_assert (dbus_message_get_reply_serial (message) == dbus_message_get_reply_serial (copy)); _dbus_assert (message->header.padding == copy->header.padding); _dbus_assert (_dbus_string_get_length (&message->header.data) == _dbus_string_get_length (©->header.data)); _dbus_assert (_dbus_string_get_length (&message->body) == _dbus_string_get_length (©->body)); verify_test_message (copy); name1 = dbus_message_get_interface (message); name2 = dbus_message_get_interface (copy); _dbus_assert (strcmp (name1, name2) == 0); name1 = dbus_message_get_member (message); name2 = dbus_message_get_member (copy); _dbus_assert (strcmp (name1, name2) == 0); dbus_message_unref (copy); /* Message loader test */ dbus_message_lock (message); loader = _dbus_message_loader_new (); /* check ref/unref */ _dbus_message_loader_ref (loader); _dbus_message_loader_unref (loader); /* Write the header data one byte at a time */ data = _dbus_string_get_const_data (&message->header.data); for (i = 0; i < _dbus_string_get_length (&message->header.data); i++) { DBusString *buffer; _dbus_message_loader_get_buffer (loader, &buffer); _dbus_string_append_byte (buffer, data[i]); _dbus_message_loader_return_buffer (loader, buffer, 1); } /* Write the body data one byte at a time */ data = _dbus_string_get_const_data (&message->body); for (i = 0; i < _dbus_string_get_length (&message->body); i++) { DBusString *buffer; _dbus_message_loader_get_buffer (loader, &buffer); _dbus_string_append_byte (buffer, data[i]); _dbus_message_loader_return_buffer (loader, buffer, 1); } #ifdef HAVE_UNIX_FD_PASSING { int *unix_fds; unsigned n_unix_fds; /* Write unix fd */ _dbus_message_loader_get_unix_fds(loader, &unix_fds, &n_unix_fds); _dbus_assert(n_unix_fds > 0); _dbus_assert(message->n_unix_fds == 1); unix_fds[0] = _dbus_dup(message->unix_fds[0], NULL); _dbus_assert(unix_fds[0] >= 0); _dbus_message_loader_return_unix_fds(loader, unix_fds, 1); } #endif dbus_message_unref (message); /* Now pop back the message */ if (!_dbus_message_loader_queue_messages (loader)) _dbus_assert_not_reached ("no memory to queue messages"); if (_dbus_message_loader_get_is_corrupted (loader)) _dbus_assert_not_reached ("message loader corrupted"); message = _dbus_message_loader_pop_message (loader); if (!message) _dbus_assert_not_reached ("received a NULL message"); if (dbus_message_get_reply_serial (message) != 5678) _dbus_assert_not_reached ("reply serial fields differ"); dbus_message_unref (message); /* ovveride the serial, since it was reset by dbus_message_copy() */ dbus_message_set_serial(message_without_unix_fds, 8901); dbus_message_lock (message_without_unix_fds); verify_test_message (message_without_unix_fds); { /* Marshal and demarshal the message. */ DBusMessage *message2; DBusError error = DBUS_ERROR_INIT; char *marshalled = NULL; int len = 0; char garbage_header[DBUS_MINIMUM_HEADER_SIZE] = "xxx"; if (!dbus_message_marshal (message_without_unix_fds, &marshalled, &len)) _dbus_assert_not_reached ("failed to marshal message"); _dbus_assert (len != 0); _dbus_assert (marshalled != NULL); _dbus_assert (dbus_message_demarshal_bytes_needed (marshalled, len) == len); message2 = dbus_message_demarshal (marshalled, len, &error); _dbus_assert (message2 != NULL); _dbus_assert (!dbus_error_is_set (&error)); verify_test_message (message2); dbus_message_unref (message2); dbus_free (marshalled); /* Demarshal invalid message. */ message2 = dbus_message_demarshal ("invalid", 7, &error); _dbus_assert (message2 == NULL); _dbus_assert (dbus_error_is_set (&error)); dbus_error_free (&error); /* Demarshal invalid (empty) message. */ message2 = dbus_message_demarshal ("", 0, &error); _dbus_assert (message2 == NULL); _dbus_assert (dbus_error_is_set (&error)); dbus_error_free (&error); /* Bytes needed to demarshal empty message: 0 (more) */ _dbus_assert (dbus_message_demarshal_bytes_needed ("", 0) == 0); /* Bytes needed to demarshal invalid message: -1 (error). */ _dbus_assert (dbus_message_demarshal_bytes_needed (garbage_header, DBUS_MINIMUM_HEADER_SIZE) == -1); } dbus_message_unref (message_without_unix_fds); _dbus_message_loader_unref (loader); check_memleaks (); _dbus_check_fdleaks(); /* Check that we can abandon a container */ message = dbus_message_new_method_call ("org.freedesktop.DBus.TestService", "/org/freedesktop/TestPath", "Foo.TestInterface", "Method"); dbus_message_iter_init_append (message, &iter); _dbus_assert (dbus_message_iter_open_container (&iter, DBUS_TYPE_ARRAY, (DBUS_STRUCT_BEGIN_CHAR_AS_STRING DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_STRING_AS_STRING DBUS_STRUCT_END_CHAR_AS_STRING), &array_iter)); _dbus_assert (dbus_message_iter_open_container (&array_iter, DBUS_TYPE_STRUCT, NULL, &struct_iter)); s = "peaches"; _dbus_assert (dbus_message_iter_append_basic (&struct_iter, DBUS_TYPE_STRING, &s)); /* uh-oh, error, try and unwind */ dbus_message_iter_abandon_container (&array_iter, &struct_iter); dbus_message_iter_abandon_container (&array_iter, &iter); dbus_message_unref (message); /* Load all the sample messages from the message factory */ { DBusMessageDataIter diter; DBusMessageData mdata; int count; reset_validities_seen (); count = 0; _dbus_message_data_iter_init (&diter); while (_dbus_message_data_iter_get_and_next (&diter, &mdata)) { if (!dbus_internal_do_not_use_try_message_data (&mdata.data, mdata.expected_validity)) { _dbus_warn ("expected validity %d and did not get it\n", mdata.expected_validity); _dbus_assert_not_reached ("message data failed"); } _dbus_message_data_free (&mdata); count += 1; } printf ("%d sample messages tested\n", count); print_validities_seen (FALSE); print_validities_seen (TRUE); } check_memleaks (); _dbus_check_fdleaks(); /* Now load every message in test_data_dir if we have one */ if (test_data_dir == NULL) return TRUE; return dbus_internal_do_not_use_foreach_message_file (test_data_dir, (DBusForeachMessageFileFunc) dbus_internal_do_not_use_try_message_file, NULL); }
static DBusHandlerResult binary_filter_func (DBusConnection *connection, DBusMessage *message, void *user_data) { BinaryMode mode = _DBUS_POINTER_TO_INT (user_data); char *blob; int len; /* It would be nice if we could do a zero-copy "peek" one day, but libdbus * is so copy-happy that this isn't really a big deal. */ if (!dbus_message_marshal (message, &blob, &len)) tool_oom ("retrieving message"); switch (mode) { case BINARY_MODE_PCAP: { long tv_sec, tv_usec; /* seconds, microseconds, bytes captured (possibly truncated), * original length. * http://wiki.wireshark.org/Development/LibpcapFileFormat */ dbus_uint32_t header[4] = { 0, 0, len, len }; /* If this gets padded then we'd need to write it out in pieces */ _DBUS_STATIC_ASSERT (sizeof (header) == 16); _dbus_get_real_time (&tv_sec, &tv_usec); header[0] = tv_sec; header[1] = tv_usec; if (!tool_write_all (STDOUT_FILENO, header, sizeof (header))) { perror ("dbus-monitor: write"); exit (1); } } break; case BINARY_MODE_RAW: default: /* nothing special, just the raw message stream */ break; } if (!tool_write_all (STDOUT_FILENO, blob, len)) { perror ("dbus-monitor: write"); exit (1); } dbus_free (blob); if (dbus_message_is_signal (message, DBUS_INTERFACE_LOCAL, "Disconnected")) exit (0); return DBUS_HANDLER_RESULT_HANDLED; }