D-Bus: dbus-transport-socket.c Source File

D-Bus 1.16.2

dbus-transport-socket.c
1/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2/* dbus-transport-socket.c Socket subclasses of DBusTransport
3 *
4 * Copyright (C) 2002, 2003, 2004, 2006 Red Hat Inc.
5 *
6 * SPDX-License-Identifier: AFL-2.1 OR GPL-2.0-or-later
7 *
8 * Licensed under the Academic Free License version 2.1
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 *
24 */
25
26#include <config.h>
27
28#include <stdio.h>
29
30#include "dbus-internals.h"
31#include "dbus-connection-internal.h"
32#include "dbus-nonce.h"
33#include "dbus-transport-socket.h"
34#include "dbus-transport-protected.h"
35#include "dbus-watch.h"
36#include "dbus-credentials.h"
37
49 typedef struct DBusTransportSocket DBusTransportSocket;
50
54 struct DBusTransportSocket
55{
56 DBusTransport base;
57 DBusSocket fd;
58 DBusWatch *read_watch;
59 DBusWatch *write_watch;
61 int max_bytes_read_per_iteration;
62 int max_bytes_written_per_iteration;
64 int message_bytes_written;
68 DBusString encoded_outgoing;
71 DBusString encoded_incoming;
74};
75
76static void
77free_watches (DBusTransport *transport)
78{
79 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
80
81 _dbus_verbose ("start\n");
82
83 if (socket_transport->read_watch)
84 {
85 if (transport->connection)
86 _dbus_connection_remove_watch_unlocked (transport->connection,
87 socket_transport->read_watch);
88 _dbus_watch_invalidate (socket_transport->read_watch);
89 _dbus_watch_unref (socket_transport->read_watch);
90 socket_transport->read_watch = NULL;
91 }
92
93 if (socket_transport->write_watch)
94 {
95 if (transport->connection)
96 _dbus_connection_remove_watch_unlocked (transport->connection,
97 socket_transport->write_watch);
98 _dbus_watch_invalidate (socket_transport->write_watch);
99 _dbus_watch_unref (socket_transport->write_watch);
100 socket_transport->write_watch = NULL;
101 }
102
103 _dbus_verbose ("end\n");
104}
105
106static void
107socket_finalize (DBusTransport *transport)
108{
109 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
110
111 _dbus_verbose ("\n");
112
113 free_watches (transport);
114
115 _dbus_string_free (&socket_transport->encoded_outgoing);
116 _dbus_string_free (&socket_transport->encoded_incoming);
117
118 _dbus_transport_finalize_base (transport);
119
120 _dbus_assert (socket_transport->read_watch == NULL);
121 _dbus_assert (socket_transport->write_watch == NULL);
122
123 dbus_free (transport);
124}
125
126static void
127check_write_watch (DBusTransport *transport)
128{
129 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
130 dbus_bool_t needed;
131
132 if (transport->connection == NULL)
133 return;
134
135 if (transport->disconnected)
136 {
137 _dbus_assert (socket_transport->write_watch == NULL);
138 return;
139 }
140
141 _dbus_transport_ref (transport);
142
143 if (_dbus_transport_try_to_authenticate (transport))
144 needed = _dbus_connection_has_messages_to_send_unlocked (transport->connection);
145 else
146 {
147 if (transport->send_credentials_pending)
148 needed = TRUE;
149 else
150 {
151 DBusAuthState auth_state;
152
153 auth_state = _dbus_auth_do_work (transport->auth);
154
155 /* If we need memory we install the write watch just in case,
156 * if there's no need for it, it will get de-installed
157 * next time we try reading.
158 */
159 if (auth_state == DBUS_AUTH_STATE_HAVE_BYTES_TO_SEND ||
160 auth_state == DBUS_AUTH_STATE_WAITING_FOR_MEMORY)
161 needed = TRUE;
162 else
163 needed = FALSE;
164 }
165 }
166
167 _dbus_verbose ("check_write_watch(): needed = %d on connection %p watch %p fd = %" DBUS_SOCKET_FORMAT " outgoing messages exist %d\n",
168 needed, transport->connection, socket_transport->write_watch,
169 _dbus_socket_printable (socket_transport->fd),
170 _dbus_connection_has_messages_to_send_unlocked (transport->connection));
171
172 _dbus_connection_toggle_watch_unlocked (transport->connection,
173 socket_transport->write_watch,
174 needed);
175
176 _dbus_transport_unref (transport);
177}
178
179static void
180check_read_watch (DBusTransport *transport)
181{
182 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
183 dbus_bool_t need_read_watch;
184
185 _dbus_verbose ("fd = %" DBUS_SOCKET_FORMAT "\n",
186 _dbus_socket_printable (socket_transport->fd));
187
188 if (transport->connection == NULL)
189 return;
190
191 if (transport->disconnected)
192 {
193 _dbus_assert (socket_transport->read_watch == NULL);
194 return;
195 }
196
197 _dbus_transport_ref (transport);
198
199 if (_dbus_transport_try_to_authenticate (transport))
200 need_read_watch =
201 (_dbus_counter_get_size_value (transport->live_messages) < transport->max_live_messages_size) &&
202 (_dbus_counter_get_unix_fd_value (transport->live_messages) < transport->max_live_messages_unix_fds);
203 else
204 {
205 if (transport->receive_credentials_pending)
206 need_read_watch = TRUE;
207 else
208 {
209 /* The reason to disable need_read_watch when not WAITING_FOR_INPUT
210 * is to avoid spinning on the file descriptor when we're waiting
211 * to write or for some other part of the auth process
212 */
213 DBusAuthState auth_state;
214
215 auth_state = _dbus_auth_do_work (transport->auth);
216
217 /* If we need memory we install the read watch just in case,
218 * if there's no need for it, it will get de-installed
219 * next time we try reading. If we're authenticated we
220 * install it since we normally have it installed while
221 * authenticated.
222 */
223 if (auth_state == DBUS_AUTH_STATE_WAITING_FOR_INPUT ||
224 auth_state == DBUS_AUTH_STATE_WAITING_FOR_MEMORY ||
225 auth_state == DBUS_AUTH_STATE_AUTHENTICATED)
226 need_read_watch = TRUE;
227 else
228 need_read_watch = FALSE;
229 }
230 }
231
232 _dbus_verbose (" setting read watch enabled = %d\n", need_read_watch);
233 _dbus_connection_toggle_watch_unlocked (transport->connection,
234 socket_transport->read_watch,
235 need_read_watch);
236
237 _dbus_transport_unref (transport);
238}
239
240static void
241do_io_error (DBusTransport *transport)
242{
243 _dbus_transport_ref (transport);
244 _dbus_transport_disconnect (transport);
245 _dbus_transport_unref (transport);
246}
247
248/* return value is whether we successfully read any new data. */
249static dbus_bool_t
250read_data_into_auth (DBusTransport *transport,
251 dbus_bool_t *oom)
252{
253 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
254 DBusString *buffer;
255 int bytes_read;
256 int saved_errno;
257
258 *oom = FALSE;
259
260 _dbus_auth_get_buffer (transport->auth, &buffer);
261
262 bytes_read = _dbus_read_socket (socket_transport->fd,
263 buffer, socket_transport->max_bytes_read_per_iteration);
264 saved_errno = _dbus_save_socket_errno ();
265
266 _dbus_auth_return_buffer (transport->auth, buffer);
267
268 if (bytes_read > 0)
269 {
270 _dbus_verbose (" read %d bytes in auth phase\n", bytes_read);
271
272 return TRUE;
273 }
274 else if (bytes_read < 0)
275 {
276 /* EINTR already handled for us */
277
278 if (_dbus_get_is_errno_enomem (saved_errno))
279 {
280 *oom = TRUE;
281 }
282 else if (_dbus_get_is_errno_eagain_or_ewouldblock (saved_errno))
283 ; /* do nothing, just return FALSE below */
284 else
285 {
286 _dbus_verbose ("Error reading from remote app: %s\n",
287 _dbus_strerror (saved_errno));
288 do_io_error (transport);
289 }
290
291 return FALSE;
292 }
293 else
294 {
295 _dbus_assert (bytes_read == 0);
296
297 _dbus_verbose ("Disconnected from remote app\n");
298 do_io_error (transport);
299
300 return FALSE;
301 }
302}
303
304/* Return value is whether we successfully wrote any bytes */
305static dbus_bool_t
306write_data_from_auth (DBusTransport *transport)
307{
308 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
309 int bytes_written;
310 int saved_errno;
311 const DBusString *buffer;
312
313 if (!_dbus_auth_get_bytes_to_send (transport->auth,
314 &buffer))
315 return FALSE;
316
317 bytes_written = _dbus_write_socket (socket_transport->fd,
318 buffer,
319 0, _dbus_string_get_length (buffer));
320 saved_errno = _dbus_save_socket_errno ();
321
322 if (bytes_written > 0)
323 {
324 _dbus_auth_bytes_sent (transport->auth, bytes_written);
325 return TRUE;
326 }
327 else if (bytes_written < 0)
328 {
329 /* EINTR already handled for us */
330
331 if (_dbus_get_is_errno_eagain_or_ewouldblock (saved_errno))
332 ;
333 else
334 {
335 _dbus_verbose ("Error writing to remote app: %s\n",
336 _dbus_strerror (saved_errno));
337 do_io_error (transport);
338 }
339 }
340
341 return FALSE;
342}
343
344/* FALSE on OOM */
345static dbus_bool_t
346exchange_credentials (DBusTransport *transport,
347 dbus_bool_t do_reading,
348 dbus_bool_t do_writing)
349{
350 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
351 DBusError error = DBUS_ERROR_INIT;
352
353 _dbus_verbose ("exchange_credentials: do_reading = %d, do_writing = %d\n",
354 do_reading, do_writing);
355
356 if (do_writing && transport->send_credentials_pending)
357 {
358 if (_dbus_send_credentials_socket (socket_transport->fd,
359 &error))
360 {
361 transport->send_credentials_pending = FALSE;
362 }
363 else
364 {
365 _dbus_verbose ("Failed to write credentials: %s\n", error.message);
366 dbus_error_free (&error);
367 do_io_error (transport);
368 }
369 }
370
371 if (do_reading && transport->receive_credentials_pending)
372 {
373 /* FIXME this can fail due to IO error _or_ OOM, broken
374 * (somewhat tricky to fix since the OOM error can be set after
375 * we already read the credentials byte, so basically we need to
376 * separate reading the byte and storing it in the
377 * transport->credentials). Does not really matter for now
378 * because storing in credentials never actually fails on unix.
379 */
380 if (_dbus_read_credentials_socket (socket_transport->fd,
381 transport->credentials,
382 &error))
383 {
384 transport->receive_credentials_pending = FALSE;
385 }
386 else
387 {
388 _dbus_verbose ("Failed to read credentials %s\n", error.message);
389 dbus_error_free (&error);
390 do_io_error (transport);
391 }
392 }
393
394 if (!(transport->send_credentials_pending ||
395 transport->receive_credentials_pending))
396 {
397 if (!_dbus_auth_set_credentials (transport->auth,
398 transport->credentials))
399 return FALSE;
400 }
401
402 return TRUE;
403}
404
405static dbus_bool_t
406do_authentication (DBusTransport *transport,
407 dbus_bool_t do_reading,
408 dbus_bool_t do_writing,
409 dbus_bool_t *auth_completed)
410{
411 dbus_bool_t oom;
412 dbus_bool_t orig_auth_state;
413
414 oom = FALSE;
415
416 orig_auth_state = _dbus_transport_try_to_authenticate (transport);
417
418 /* This is essential to avoid the check_write_watch() at the end,
419 * we don't want to add a write watch in do_iteration before
420 * we try writing and get EAGAIN
421 */
422 if (orig_auth_state)
423 {
424 if (auth_completed)
425 *auth_completed = FALSE;
426 return TRUE;
427 }
428
429 _dbus_transport_ref (transport);
430
431 while (!_dbus_transport_try_to_authenticate (transport) &&
432 _dbus_transport_get_is_connected (transport))
433 {
434 if (!exchange_credentials (transport, do_reading, do_writing))
435 {
436 /* OOM */
437 oom = TRUE;
438 goto out;
439 }
440
441 if (transport->send_credentials_pending ||
442 transport->receive_credentials_pending)
443 {
444 _dbus_verbose ("send_credentials_pending = %d receive_credentials_pending = %d\n",
445 transport->send_credentials_pending,
446 transport->receive_credentials_pending);
447 goto out;
448 }
449
450#define TRANSPORT_SIDE(t) ((t)->is_server ? "server" : "client")
451 switch (_dbus_auth_do_work (transport->auth))
452 {
453 case DBUS_AUTH_STATE_WAITING_FOR_INPUT:
454 _dbus_verbose (" %s auth state: waiting for input\n",
455 TRANSPORT_SIDE (transport));
456 if (!do_reading || !read_data_into_auth (transport, &oom))
457 goto out;
458 break;
459
460 case DBUS_AUTH_STATE_WAITING_FOR_MEMORY:
461 _dbus_verbose (" %s auth state: waiting for memory\n",
462 TRANSPORT_SIDE (transport));
463 oom = TRUE;
464 goto out;
465 break;
466
467 case DBUS_AUTH_STATE_HAVE_BYTES_TO_SEND:
468 _dbus_verbose (" %s auth state: bytes to send\n",
469 TRANSPORT_SIDE (transport));
470 if (!do_writing || !write_data_from_auth (transport))
471 goto out;
472 break;
473
474 case DBUS_AUTH_STATE_NEED_DISCONNECT:
475 _dbus_verbose (" %s auth state: need to disconnect\n",
476 TRANSPORT_SIDE (transport));
477 do_io_error (transport);
478 break;
479
480 case DBUS_AUTH_STATE_AUTHENTICATED:
481 _dbus_verbose (" %s auth state: authenticated\n",
482 TRANSPORT_SIDE (transport));
483 break;
484
485 case DBUS_AUTH_STATE_INVALID:
486 /* fall through */
487 default:
488 _dbus_assert_not_reached ("invalid auth state");
489 }
490 }
491
492 out:
493 if (auth_completed)
494 *auth_completed = (orig_auth_state != _dbus_transport_try_to_authenticate (transport));
495
496 check_read_watch (transport);
497 check_write_watch (transport);
498 _dbus_transport_unref (transport);
499
500 if (oom)
501 return FALSE;
502 else
503 return TRUE;
504}
505
506/* returns false on oom */
507static dbus_bool_t
508do_writing (DBusTransport *transport)
509{
510 int total;
511 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
512 dbus_bool_t oom;
513
514 /* No messages without authentication! */
515 if (!_dbus_transport_try_to_authenticate (transport))
516 {
517 _dbus_verbose ("Not authenticated, not writing anything\n");
518 return TRUE;
519 }
520
521 if (transport->disconnected)
522 {
523 _dbus_verbose ("Not connected, not writing anything\n");
524 return TRUE;
525 }
526
527#if 1
528 _dbus_verbose ("do_writing(), have_messages = %d, fd = %" DBUS_SOCKET_FORMAT "\n",
529 _dbus_connection_has_messages_to_send_unlocked (transport->connection),
530 _dbus_socket_printable (socket_transport->fd));
531#endif
532
533 oom = FALSE;
534 total = 0;
535
536 while (!transport->disconnected &&
537 _dbus_connection_has_messages_to_send_unlocked (transport->connection))
538 {
539 int bytes_written;
540 DBusMessage *message;
541 const DBusString *header;
542 const DBusString *body;
543 int header_len, body_len;
544 int total_bytes_to_write;
545 int saved_errno;
546
547 if (total > socket_transport->max_bytes_written_per_iteration)
548 {
549 _dbus_verbose ("%d bytes exceeds %d bytes written per iteration, returning\n",
550 total, socket_transport->max_bytes_written_per_iteration);
551 goto out;
552 }
553
554 message = _dbus_connection_get_message_to_send (transport->connection);
555 _dbus_assert (message != NULL);
556 dbus_message_lock (message);
557
558#if 0
559 _dbus_verbose ("writing message %p\n", message);
560#endif
561
562 _dbus_message_get_network_data (message,
563 &header, &body);
564
565 header_len = _dbus_string_get_length (header);
566 body_len = _dbus_string_get_length (body);
567
568 if (_dbus_auth_needs_encoding (transport->auth))
569 {
570 /* Does fd passing even make sense with encoded data? */
571 _dbus_assert(!DBUS_TRANSPORT_CAN_SEND_UNIX_FD(transport));
572
573 if (_dbus_string_get_length (&socket_transport->encoded_outgoing) == 0)
574 {
575 if (!_dbus_auth_encode_data (transport->auth,
576 header, &socket_transport->encoded_outgoing))
577 {
578 oom = TRUE;
579 goto out;
580 }
581
582 if (!_dbus_auth_encode_data (transport->auth,
583 body, &socket_transport->encoded_outgoing))
584 {
585 _dbus_string_set_length (&socket_transport->encoded_outgoing, 0);
586 oom = TRUE;
587 goto out;
588 }
589 }
590
591 total_bytes_to_write = _dbus_string_get_length (&socket_transport->encoded_outgoing);
592
593#if 0
594 _dbus_verbose ("encoded message is %d bytes\n",
595 total_bytes_to_write);
596#endif
597
598 bytes_written =
599 _dbus_write_socket (socket_transport->fd,
600 &socket_transport->encoded_outgoing,
601 socket_transport->message_bytes_written,
602 total_bytes_to_write - socket_transport->message_bytes_written);
603 saved_errno = _dbus_save_socket_errno ();
604 }
605 else
606 {
607 total_bytes_to_write = header_len + body_len;
608
609#if 0
610 _dbus_verbose ("message is %d bytes\n",
611 total_bytes_to_write);
612#endif
613
614#ifdef HAVE_UNIX_FD_PASSING
615 if (socket_transport->message_bytes_written <= 0 && DBUS_TRANSPORT_CAN_SEND_UNIX_FD(transport))
616 {
617 /* Send the fds along with the first byte of the message */
618 const int *unix_fds;
619 unsigned n;
620
621 _dbus_message_get_unix_fds(message, &unix_fds, &n);
622
623 bytes_written =
624 _dbus_write_socket_with_unix_fds_two (socket_transport->fd,
625 header,
626 socket_transport->message_bytes_written,
627 header_len - socket_transport->message_bytes_written,
628 body,
629 0, body_len,
630 unix_fds,
631 n);
632 saved_errno = _dbus_save_socket_errno ();
633
634 if (bytes_written > 0 && n > 0)
635 _dbus_verbose("Wrote %i unix fds\n", n);
636 }
637 else
638#endif
639 {
640 if (socket_transport->message_bytes_written < header_len)
641 {
642 bytes_written =
643 _dbus_write_socket_two (socket_transport->fd,
644 header,
645 socket_transport->message_bytes_written,
646 header_len - socket_transport->message_bytes_written,
647 body,
648 0, body_len);
649 }
650 else
651 {
652 bytes_written =
653 _dbus_write_socket (socket_transport->fd,
654 body,
655 (socket_transport->message_bytes_written - header_len),
656 body_len -
657 (socket_transport->message_bytes_written - header_len));
658 }
659
660 saved_errno = _dbus_save_socket_errno ();
661 }
662 }
663
664 if (bytes_written < 0)
665 {
666 /* EINTR already handled for us */
667
668 /* If the other end closed the socket with close() or shutdown(), we
669 * receive EPIPE here but we must not close the socket yet: there
670 * might still be some data to read. See:
671 * http://lists.freedesktop.org/archives/dbus/2008-March/009526.html
672 */
673
674 if (_dbus_get_is_errno_eagain_or_ewouldblock (saved_errno) || _dbus_get_is_errno_epipe (saved_errno))
675 goto out;
676
677 /* Since Linux commit 25888e (from 2.6.37-rc4, Nov 2010), sendmsg()
678 * on Unix sockets returns -1 errno=ETOOMANYREFS when the passfd
679 * mechanism (SCM_RIGHTS) is used recursively with a recursion level
680 * of maximum 4. The kernel does not have an API to check whether
681 * the passed fds can be forwarded and it can change asynchronously.
682 * See:
683 * https://bugs.freedesktop.org/show_bug.cgi?id=80163
684 */
685
686 else if (_dbus_get_is_errno_etoomanyrefs (saved_errno))
687 {
688 /* We only send fds in the first byte of the message.
689 * ETOOMANYREFS cannot happen after.
690 */
691 _dbus_assert (socket_transport->message_bytes_written == 0);
692
693 _dbus_verbose (" discard message of %d bytes due to ETOOMANYREFS\n",
694 total_bytes_to_write);
695
696 socket_transport->message_bytes_written = 0;
697 _dbus_string_set_length (&socket_transport->encoded_outgoing, 0);
698 _dbus_string_compact (&socket_transport->encoded_outgoing, 2048);
699
700 /* The message was not actually sent but it needs to be removed
701 * from the outgoing queue
702 */
703 _dbus_connection_message_sent_unlocked (transport->connection,
704 message);
705 }
706 else
707 {
708 _dbus_verbose ("Error writing to remote app: %s\n",
709 _dbus_strerror (saved_errno));
710 do_io_error (transport);
711 goto out;
712 }
713 }
714 else
715 {
716 _dbus_verbose (" wrote %d bytes of %d\n", bytes_written,
717 total_bytes_to_write);
718
719 total += bytes_written;
720 socket_transport->message_bytes_written += bytes_written;
721
722 _dbus_assert (socket_transport->message_bytes_written <=
723 total_bytes_to_write);
724
725 if (socket_transport->message_bytes_written == total_bytes_to_write)
726 {
727 socket_transport->message_bytes_written = 0;
728 _dbus_string_set_length (&socket_transport->encoded_outgoing, 0);
729 _dbus_string_compact (&socket_transport->encoded_outgoing, 2048);
730
731 _dbus_connection_message_sent_unlocked (transport->connection,
732 message);
733 }
734 }
735 }
736
737 out:
738 if (oom)
739 return FALSE;
740 else
741 return TRUE;
742}
743
744/* returns false on out-of-memory */
745static dbus_bool_t
746do_reading (DBusTransport *transport)
747{
748 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
749 DBusString *buffer;
750 int bytes_read;
751 int total;
752 dbus_bool_t oom;
753 int saved_errno;
754
755 _dbus_verbose ("fd = %" DBUS_SOCKET_FORMAT "\n",
756 _dbus_socket_printable (socket_transport->fd));
757
758 /* No messages without authentication! */
759 if (!_dbus_transport_try_to_authenticate (transport))
760 return TRUE;
761
762 oom = FALSE;
763
764 total = 0;
765
766 again:
767
768 /* See if we've exceeded max messages and need to disable reading */
769 check_read_watch (transport);
770
771 if (total > socket_transport->max_bytes_read_per_iteration)
772 {
773 _dbus_verbose ("%d bytes exceeds %d bytes read per iteration, returning\n",
774 total, socket_transport->max_bytes_read_per_iteration);
775 goto out;
776 }
777
778 _dbus_assert (socket_transport->read_watch != NULL ||
779 transport->disconnected);
780
781 if (transport->disconnected)
782 goto out;
783
784 if (!dbus_watch_get_enabled (socket_transport->read_watch))
785 return TRUE;
786
787 if (_dbus_auth_needs_decoding (transport->auth))
788 {
789 /* Does fd passing even make sense with encoded data? */
790 _dbus_assert(!DBUS_TRANSPORT_CAN_SEND_UNIX_FD(transport));
791
792 if (_dbus_string_get_length (&socket_transport->encoded_incoming) > 0)
793 bytes_read = _dbus_string_get_length (&socket_transport->encoded_incoming);
794 else
795 bytes_read = _dbus_read_socket (socket_transport->fd,
796 &socket_transport->encoded_incoming,
797 socket_transport->max_bytes_read_per_iteration);
798
799 saved_errno = _dbus_save_socket_errno ();
800
801 _dbus_assert (_dbus_string_get_length (&socket_transport->encoded_incoming) ==
802 bytes_read);
803
804 if (bytes_read > 0)
805 {
806 _dbus_message_loader_get_buffer (transport->loader,
807 &buffer,
808 NULL,
809 NULL);
810
811 if (!_dbus_auth_decode_data (transport->auth,
812 &socket_transport->encoded_incoming,
813 buffer))
814 {
815 _dbus_verbose ("Out of memory decoding incoming data\n");
816 _dbus_message_loader_return_buffer (transport->loader,
817 buffer);
818
819 oom = TRUE;
820 goto out;
821 }
822
823 _dbus_message_loader_return_buffer (transport->loader,
824 buffer);
825
826 _dbus_string_set_length (&socket_transport->encoded_incoming, 0);
827 _dbus_string_compact (&socket_transport->encoded_incoming, 2048);
828 }
829 }
830 else
831 {
832 int max_to_read = DBUS_MAXIMUM_MESSAGE_LENGTH;
833 dbus_bool_t may_read_unix_fds = TRUE;
834
835 _dbus_message_loader_get_buffer (transport->loader,
836 &buffer,
837 &max_to_read,
838 &may_read_unix_fds);
839
840 if (max_to_read > socket_transport->max_bytes_read_per_iteration)
841 max_to_read = socket_transport->max_bytes_read_per_iteration;
842
843#ifdef HAVE_UNIX_FD_PASSING
844 if (DBUS_TRANSPORT_CAN_SEND_UNIX_FD(transport) && may_read_unix_fds)
845 {
846 int *fds;
847 unsigned int n_fds;
848
849 if (!_dbus_message_loader_get_unix_fds(transport->loader, &fds, &n_fds))
850 {
851 _dbus_verbose ("Out of memory reading file descriptors\n");
852 _dbus_message_loader_return_buffer (transport->loader, buffer);
853 oom = TRUE;
854 goto out;
855 }
856
857 bytes_read = _dbus_read_socket_with_unix_fds(socket_transport->fd,
858 buffer,
859 max_to_read,
860 fds, &n_fds);
861 saved_errno = _dbus_save_socket_errno ();
862
863 if (bytes_read >= 0 && n_fds > 0)
864 _dbus_verbose("Read %i unix fds\n", n_fds);
865
866 _dbus_message_loader_return_unix_fds(transport->loader, fds, bytes_read < 0 ? 0 : n_fds);
867 }
868 else
869#endif
870 {
871 bytes_read = _dbus_read_socket (socket_transport->fd,
872 buffer, max_to_read);
873 saved_errno = _dbus_save_socket_errno ();
874 }
875
876 _dbus_message_loader_return_buffer (transport->loader,
877 buffer);
878 }
879
880 if (bytes_read < 0)
881 {
882 /* EINTR already handled for us */
883
884 if (_dbus_get_is_errno_enomem (saved_errno))
885 {
886 _dbus_verbose ("Out of memory in read()/do_reading()\n");
887 oom = TRUE;
888 goto out;
889 }
890 else if (_dbus_get_is_errno_eagain_or_ewouldblock (saved_errno))
891 goto out;
892 else
893 {
894 _dbus_verbose ("Error reading from remote app: %s\n",
895 _dbus_strerror (saved_errno));
896 do_io_error (transport);
897 goto out;
898 }
899 }
900 else if (bytes_read == 0)
901 {
902 _dbus_verbose ("Disconnected from remote app\n");
903 do_io_error (transport);
904 goto out;
905 }
906 else
907 {
908 _dbus_verbose (" read %d bytes\n", bytes_read);
909
910 total += bytes_read;
911
912 if (!_dbus_transport_queue_messages (transport))
913 {
914 oom = TRUE;
915 _dbus_verbose (" out of memory when queueing messages we just read in the transport\n");
916 goto out;
917 }
918
919 /* Try reading more data until we get EAGAIN and return, or
920 * exceed max bytes per iteration. If in blocking mode of
921 * course we'll block instead of returning.
922 */
923 goto again;
924 }
925
926 out:
927 if (oom)
928 return FALSE;
929 else
930 return TRUE;
931}
932
933static dbus_bool_t
934unix_error_with_read_to_come (DBusTransport *itransport,
935 DBusWatch *watch,
936 unsigned int flags)
937{
938 DBusTransportSocket *transport = (DBusTransportSocket *) itransport;
939
940 if (!(flags & DBUS_WATCH_HANGUP || flags & DBUS_WATCH_ERROR))
941 return FALSE;
942
943 /* If we have a read watch enabled ...
944 we -might have data incoming ... => handle the HANGUP there */
945 if (watch != transport->read_watch &&
946 _dbus_watch_get_enabled (transport->read_watch))
947 return FALSE;
948
949 return TRUE;
950}
951
952static dbus_bool_t
953socket_handle_watch (DBusTransport *transport,
954 DBusWatch *watch,
955 unsigned int flags)
956{
957 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
958
959 _dbus_assert (watch == socket_transport->read_watch ||
960 watch == socket_transport->write_watch);
961 _dbus_assert (watch != NULL);
962
963 /* If we hit an error here on a write watch, don't disconnect the transport yet because data can
964 * still be in the buffer and do_reading may need several iteration to read
965 * it all (because of its max_bytes_read_per_iteration limit).
966 */
967 if (!(flags & DBUS_WATCH_READABLE) && unix_error_with_read_to_come (transport, watch, flags))
968 {
969 _dbus_verbose ("Hang up or error on watch\n");
970 _dbus_transport_disconnect (transport);
971 return TRUE;
972 }
973
974 if (watch == socket_transport->read_watch &&
975 (flags & DBUS_WATCH_READABLE))
976 {
977 dbus_bool_t auth_finished;
978#if 1
979 _dbus_verbose ("handling read watch %p flags = %x\n",
980 watch, flags);
981#endif
982 if (!do_authentication (transport, TRUE, FALSE, &auth_finished))
983 return FALSE;
984
985 /* We don't want to do a read immediately following
986 * a successful authentication. This is so we
987 * have a chance to propagate the authentication
988 * state further up. Specifically, we need to
989 * process any pending data from the auth object.
990 */
991 if (!auth_finished)
992 {
993 if (!do_reading (transport))
994 {
995 _dbus_verbose ("no memory to read\n");
996 return FALSE;
997 }
998 }
999 else
1000 {
1001 _dbus_verbose ("Not reading anything since we just completed the authentication\n");
1002 }
1003 }
1004 else if (watch == socket_transport->write_watch &&
1005 (flags & DBUS_WATCH_WRITABLE))
1006 {
1007#if 1
1008 _dbus_verbose ("handling write watch, have_outgoing_messages = %d\n",
1009 _dbus_connection_has_messages_to_send_unlocked (transport->connection));
1010#endif
1011 if (!do_authentication (transport, FALSE, TRUE, NULL))
1012 return FALSE;
1013
1014 if (!do_writing (transport))
1015 {
1016 _dbus_verbose ("no memory to write\n");
1017 return FALSE;
1018 }
1019
1020 /* See if we still need the write watch */
1021 check_write_watch (transport);
1022 }
1023#ifdef DBUS_ENABLE_VERBOSE_MODE
1024 else
1025 {
1026 if (watch == socket_transport->read_watch)
1027 _dbus_verbose ("asked to handle read watch with non-read condition 0x%x\n",
1028 flags);
1029 else if (watch == socket_transport->write_watch)
1030 _dbus_verbose ("asked to handle write watch with non-write condition 0x%x\n",
1031 flags);
1032 else
1033 _dbus_verbose ("asked to handle watch %p on fd %" DBUS_SOCKET_FORMAT " that we don't recognize\n",
1034 watch, _dbus_socket_printable (_dbus_watch_get_socket (watch)));
1035 }
1036#endif /* DBUS_ENABLE_VERBOSE_MODE */
1037
1038 return TRUE;
1039}
1040
1041static void
1042socket_disconnect (DBusTransport *transport)
1043{
1044 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
1045
1046 _dbus_verbose ("\n");
1047
1048 free_watches (transport);
1049
1050 _dbus_close_socket (&socket_transport->fd, NULL);
1051}
1052
1053static dbus_bool_t
1054socket_connection_set (DBusTransport *transport)
1055{
1056 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
1057
1058 _dbus_watch_set_handler (socket_transport->write_watch,
1059 _dbus_connection_handle_watch,
1060 transport->connection, NULL);
1061
1062 _dbus_watch_set_handler (socket_transport->read_watch,
1063 _dbus_connection_handle_watch,
1064 transport->connection, NULL);
1065
1066 if (!_dbus_connection_add_watch_unlocked (transport->connection,
1067 socket_transport->write_watch))
1068 return FALSE;
1069
1070 if (!_dbus_connection_add_watch_unlocked (transport->connection,
1071 socket_transport->read_watch))
1072 {
1073 _dbus_connection_remove_watch_unlocked (transport->connection,
1074 socket_transport->write_watch);
1075 return FALSE;
1076 }
1077
1078 check_read_watch (transport);
1079 check_write_watch (transport);
1080
1081 return TRUE;
1082}
1083
1091static void
1092socket_do_iteration (DBusTransport *transport,
1093 unsigned int flags,
1094 int timeout_milliseconds)
1095{
1096 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
1097 DBusPollFD poll_fd;
1098 int poll_res;
1099 int poll_timeout;
1100
1101 _dbus_verbose (" iteration flags = %s%s timeout = %d read_watch = %p write_watch = %p fd = %" DBUS_SOCKET_FORMAT "\n",
1102 flags & DBUS_ITERATION_DO_READING ? "read" : "",
1103 flags & DBUS_ITERATION_DO_WRITING ? "write" : "",
1104 timeout_milliseconds,
1105 socket_transport->read_watch,
1106 socket_transport->write_watch,
1107 _dbus_socket_printable (socket_transport->fd));
1108
1109 /* the passed in DO_READING/DO_WRITING flags indicate whether to
1110 * read/write messages, but regardless of those we may need to block
1111 * for reading/writing to do auth. But if we do reading for auth,
1112 * we don't want to read any messages yet if not given DO_READING.
1113 */
1114
1115 poll_fd.fd = _dbus_socket_get_pollable (socket_transport->fd);
1116 poll_fd.events = 0;
1117
1118 if (_dbus_transport_try_to_authenticate (transport))
1119 {
1120 /* This is kind of a hack; if we have stuff to write, then try
1121 * to avoid the poll. This is probably about a 5% speedup on an
1122 * echo client/server.
1123 *
1124 * If both reading and writing were requested, we want to avoid this
1125 * since it could have funky effects:
1126 * - both ends spinning waiting for the other one to read
1127 * data so they can finish writing
1128 * - prioritizing all writing ahead of reading
1129 */
1130 if ((flags & DBUS_ITERATION_DO_WRITING) &&
1131 !(flags & (DBUS_ITERATION_DO_READING | DBUS_ITERATION_BLOCK)) &&
1132 !transport->disconnected &&
1133 _dbus_connection_has_messages_to_send_unlocked (transport->connection))
1134 {
1135 do_writing (transport);
1136
1137 if (transport->disconnected ||
1138 !_dbus_connection_has_messages_to_send_unlocked (transport->connection))
1139 goto out;
1140 }
1141
1142 /* If we get here, we decided to do the poll() after all */
1143 _dbus_assert (socket_transport->read_watch);
1144 if (flags & DBUS_ITERATION_DO_READING)
1145 poll_fd.events |= _DBUS_POLLIN;
1146
1147 _dbus_assert (socket_transport->write_watch);
1148 if (flags & DBUS_ITERATION_DO_WRITING)
1149 poll_fd.events |= _DBUS_POLLOUT;
1150 }
1151 else
1152 {
1153 DBusAuthState auth_state;
1154
1155 auth_state = _dbus_auth_do_work (transport->auth);
1156
1157 if (transport->receive_credentials_pending ||
1158 auth_state == DBUS_AUTH_STATE_WAITING_FOR_INPUT)
1159 poll_fd.events |= _DBUS_POLLIN;
1160
1161 if (transport->send_credentials_pending ||
1162 auth_state == DBUS_AUTH_STATE_HAVE_BYTES_TO_SEND)
1163 poll_fd.events |= _DBUS_POLLOUT;
1164 }
1165
1166 if (poll_fd.events)
1167 {
1168 int saved_errno;
1169
1170 if (flags & DBUS_ITERATION_BLOCK)
1171 poll_timeout = timeout_milliseconds;
1172 else
1173 poll_timeout = 0;
1174
1175 /* For blocking selects we drop the connection lock here
1176 * to avoid blocking out connection access during a potentially
1177 * indefinite blocking call. The io path is still protected
1178 * by the io_path_cond condvar, so we won't reenter this.
1179 */
1180 if (flags & DBUS_ITERATION_BLOCK)
1181 {
1182 _dbus_verbose ("unlock pre poll\n");
1183 _dbus_connection_unlock (transport->connection);
1184 }
1185
1186 again:
1187 poll_res = _dbus_poll (&poll_fd, 1, poll_timeout);
1188 saved_errno = _dbus_save_socket_errno ();
1189
1190 if (poll_res < 0 && _dbus_get_is_errno_eintr (saved_errno))
1191 goto again;
1192
1193 if (flags & DBUS_ITERATION_BLOCK)
1194 {
1195 _dbus_verbose ("lock post poll\n");
1196 _dbus_connection_lock (transport->connection);
1197 }
1198
1199 if (poll_res >= 0)
1200 {
1201 if (poll_res == 0)
1202 poll_fd.revents = 0; /* some concern that posix does not guarantee this;
1203 * valgrind flags it as an error. though it probably
1204 * is guaranteed on linux at least.
1205 */
1206
1207 if (poll_fd.revents & _DBUS_POLLERR)
1208 do_io_error (transport);
1209 else
1210 {
1211 dbus_bool_t need_read = (poll_fd.revents & _DBUS_POLLIN) > 0;
1212 dbus_bool_t need_write = (poll_fd.revents & _DBUS_POLLOUT) > 0;
1213 dbus_bool_t authentication_completed;
1214
1215 _dbus_verbose ("in iteration, need_read=%d need_write=%d\n",
1216 need_read, need_write);
1217 do_authentication (transport, need_read, need_write,
1218 &authentication_completed);
1219
1220 /* See comment in socket_handle_watch. */
1221 if (authentication_completed)
1222 goto out;
1223
1224 if (need_read && (flags & DBUS_ITERATION_DO_READING))
1225 do_reading (transport);
1226 if (need_write && (flags & DBUS_ITERATION_DO_WRITING))
1227 do_writing (transport);
1228 }
1229 }
1230 else
1231 {
1232 _dbus_verbose ("Error from _dbus_poll(): %s\n",
1233 _dbus_strerror (saved_errno));
1234 }
1235 }
1236
1237
1238 out:
1239 /* We need to install the write watch only if we did not
1240 * successfully write everything. Note we need to be careful that we
1241 * don't call check_write_watch *before* do_writing, since it's
1242 * inefficient to add the write watch, and we can avoid it most of
1243 * the time since we can write immediately.
1244 *
1245 * However, we MUST always call check_write_watch(); DBusConnection code
1246 * relies on the fact that running an iteration will notice that
1247 * messages are pending.
1248 */
1249 check_write_watch (transport);
1250
1251 _dbus_verbose (" ... leaving do_iteration()\n");
1252}
1253
1254static void
1255socket_live_messages_changed (DBusTransport *transport)
1256{
1257 /* See if we should look for incoming messages again */
1258 check_read_watch (transport);
1259}
1260
1261
1262static dbus_bool_t
1263socket_get_socket_fd (DBusTransport *transport,
1264 DBusSocket *fd_p)
1265{
1266 DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
1267
1268 *fd_p = socket_transport->fd;
1269
1270 return TRUE;
1271}
1272
1273static const DBusTransportVTable socket_vtable = {
1274 socket_finalize,
1275 socket_handle_watch,
1276 socket_disconnect,
1277 socket_connection_set,
1278 socket_do_iteration,
1279 socket_live_messages_changed,
1280 socket_get_socket_fd
1281};
1282
1294 DBusTransport*
1295_dbus_transport_new_for_socket (DBusSocket fd,
1296 const DBusString *server_guid,
1297 const DBusString *address)
1298{
1299 DBusTransportSocket *socket_transport;
1300 DBusString invalid = _DBUS_STRING_INIT_INVALID;
1301
1302 socket_transport = dbus_new0 (DBusTransportSocket, 1);
1303 if (socket_transport == NULL)
1304 return NULL;
1305
1306 /* So they can be "freed" without error */
1307 socket_transport->encoded_outgoing = invalid;
1308 socket_transport->encoded_incoming = invalid;
1309
1310 if (!_dbus_string_init (&socket_transport->encoded_outgoing))
1311 goto failed;
1312
1313 if (!_dbus_string_init (&socket_transport->encoded_incoming))
1314 goto failed;
1315
1316 socket_transport->write_watch = _dbus_watch_new (_dbus_socket_get_pollable (fd),
1317 DBUS_WATCH_WRITABLE,
1318 FALSE,
1319 NULL, NULL, NULL);
1320 if (socket_transport->write_watch == NULL)
1321 goto failed;
1322
1323 socket_transport->read_watch = _dbus_watch_new (_dbus_socket_get_pollable (fd),
1324 DBUS_WATCH_READABLE,
1325 FALSE,
1326 NULL, NULL, NULL);
1327 if (socket_transport->read_watch == NULL)
1328 goto failed;
1329
1330 if (!_dbus_transport_init_base (&socket_transport->base,
1331 &socket_vtable,
1332 server_guid, address))
1333 goto failed;
1334
1335#ifdef HAVE_UNIX_FD_PASSING
1336 _dbus_auth_set_unix_fd_possible(socket_transport->base.auth, _dbus_socket_can_pass_unix_fd(fd));
1337#endif
1338
1339 socket_transport->fd = fd;
1340 socket_transport->message_bytes_written = 0;
1341
1342 /* These values should probably be tunable or something. */
1343 socket_transport->max_bytes_read_per_iteration = 2048;
1344 socket_transport->max_bytes_written_per_iteration = 2048;
1345
1346 return (DBusTransport*) socket_transport;
1347
1348failed:
1349 if (socket_transport->read_watch != NULL)
1350 {
1351 _dbus_watch_invalidate (socket_transport->read_watch);
1352 _dbus_watch_unref (socket_transport->read_watch);
1353 }
1354
1355 if (socket_transport->write_watch != NULL)
1356 {
1357 _dbus_watch_invalidate (socket_transport->write_watch);
1358 _dbus_watch_unref (socket_transport->write_watch);
1359 }
1360
1361 _dbus_string_free (&socket_transport->encoded_incoming);
1362 _dbus_string_free (&socket_transport->encoded_outgoing);
1363 dbus_free (socket_transport);
1364 return NULL;
1365}
1366
1378 DBusTransport*
1379_dbus_transport_new_for_tcp_socket (const char *host,
1380 const char *port,
1381 const char *family,
1382 const char *noncefile,
1383 DBusError *error)
1384{
1385 DBusSocket fd;
1386 DBusTransport *transport;
1387 DBusString address;
1388
1389 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1390
1391 if (!_dbus_string_init (&address))
1392 {
1393 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1394 return NULL;
1395 }
1396
1397 if (host == NULL)
1398 host = "localhost";
1399
1400 if (!_dbus_string_append (&address, noncefile ? "nonce-tcp:" : "tcp:"))
1401 goto error;
1402
1403 if (!_dbus_string_append (&address, "host=") ||
1404 !_dbus_string_append (&address, host))
1405 goto error;
1406
1407 if (!_dbus_string_append (&address, ",port=") ||
1408 !_dbus_string_append (&address, port))
1409 goto error;
1410
1411 if (family != NULL &&
1412 (!_dbus_string_append (&address, ",family=") ||
1413 !_dbus_string_append (&address, family)))
1414 goto error;
1415
1416 if (noncefile != NULL &&
1417 (!_dbus_string_append (&address, ",noncefile=") ||
1418 !_dbus_string_append (&address, noncefile)))
1419 goto error;
1420
1421 fd = _dbus_connect_tcp_socket_with_nonce (host, port, family, noncefile, error);
1422 if (!_dbus_socket_is_valid (fd))
1423 {
1424 _DBUS_ASSERT_ERROR_IS_SET (error);
1425 _dbus_string_free (&address);
1426 return NULL;
1427 }
1428
1429 _dbus_verbose ("Successfully connected to tcp socket %s:%s\n",
1430 host, port);
1431
1432 transport = _dbus_transport_new_for_socket (fd, NULL, &address);
1433 _dbus_string_free (&address);
1434 if (transport == NULL)
1435 {
1436 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1437 _dbus_close_socket (&fd, NULL);
1438 }
1439
1440 return transport;
1441
1442error:
1443 _dbus_string_free (&address);
1444 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1445 return NULL;
1446}
1447
1456DBusTransportOpenResult
1457_dbus_transport_open_socket(DBusAddressEntry *entry,
1458 DBusTransport **transport_p,
1459 DBusError *error)
1460{
1461 const char *method;
1462 dbus_bool_t isTcp;
1463 dbus_bool_t isNonceTcp;
1464
1465 method = dbus_address_entry_get_method (entry);
1466 _dbus_assert (method != NULL);
1467
1468 isTcp = strcmp (method, "tcp") == 0;
1469 isNonceTcp = strcmp (method, "nonce-tcp") == 0;
1470
1471 if (isTcp || isNonceTcp)
1472 {
1473 const char *host = dbus_address_entry_get_value (entry, "host");
1474 const char *port = dbus_address_entry_get_value (entry, "port");
1475 const char *family = dbus_address_entry_get_value (entry, "family");
1476 const char *noncefile = dbus_address_entry_get_value (entry, "noncefile");
1477
1478 if ((isNonceTcp == TRUE) != (noncefile != NULL)) {
1479 _dbus_set_bad_address (error, method, "noncefile", NULL);
1480 return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
1481 }
1482
1483 if (port == NULL)
1484 {
1485 _dbus_set_bad_address (error, method, "port", NULL);
1486 return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
1487 }
1488
1489 *transport_p = _dbus_transport_new_for_tcp_socket (host, port, family, noncefile, error);
1490 if (*transport_p == NULL)
1491 {
1492 _DBUS_ASSERT_ERROR_IS_SET (error);
1493 return DBUS_TRANSPORT_OPEN_DID_NOT_CONNECT;
1494 }
1495 else
1496 {
1497 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1498 return DBUS_TRANSPORT_OPEN_OK;
1499 }
1500 }
1501 else
1502 {
1503 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1504 return DBUS_TRANSPORT_OPEN_NOT_HANDLED;
1505 }
1506}
1507
1517 DBusTransport*
1518_dbus_transport_new_for_domain_socket (const char *path,
1519 dbus_bool_t abstract,
1520 DBusError *error)
1521{
1522 DBusSocket fd = DBUS_SOCKET_INIT;
1523 DBusTransport *transport;
1524 DBusString address;
1525 DBusString unescaped_path;
1526
1527 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1528
1529 if (!_dbus_string_init (&address))
1530 {
1531 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1532 return NULL;
1533 }
1534
1535 _dbus_string_init_const (&unescaped_path, path);
1536
1537 if ((abstract &&
1538 !_dbus_string_append (&address, "unix:abstract=")) ||
1539 (!abstract &&
1540 !_dbus_string_append (&address, "unix:path=")) ||
1541 !_dbus_address_append_escaped (&address, &unescaped_path))
1542 {
1543 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1544 goto failed_0;
1545 }
1546
1547 fd = _dbus_connect_unix_socket (path, abstract, error);
1548 if (!_dbus_socket_is_valid (fd))
1549 {
1550 _DBUS_ASSERT_ERROR_IS_SET (error);
1551 goto failed_0;
1552 }
1553
1554 _dbus_verbose ("Successfully connected to unix socket %s\n",
1555 path);
1556
1557 transport = _dbus_transport_new_for_socket (fd, NULL, &address);
1558 if (transport == NULL)
1559 {
1560 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1561 goto failed_1;
1562 }
1563
1564 _dbus_string_free (&address);
1565
1566 return transport;
1567
1568 failed_1:
1569 _dbus_close_socket (&fd, NULL);
1570 failed_0:
1571 _dbus_string_free (&address);
1572 return NULL;
1573}
1574
1583DBusTransportOpenResult
1584_dbus_transport_open_unix_socket (DBusAddressEntry *entry,
1585 DBusTransport **transport_p,
1586 DBusError *error)
1587{
1588 const char *method;
1589
1590 method = dbus_address_entry_get_method (entry);
1591 _dbus_assert (method != NULL);
1592
1593 if (strcmp (method, "unix") == 0)
1594 {
1595 const char *path = dbus_address_entry_get_value (entry, "path");
1596 const char *tmpdir = dbus_address_entry_get_value (entry, "tmpdir");
1597 const char *abstract = dbus_address_entry_get_value (entry, "abstract");
1598
1599 if (tmpdir != NULL)
1600 {
1601 _dbus_set_bad_address (error, NULL, NULL,
1602 "cannot use the \"tmpdir\" option for an address to connect to, only in an address to listen on");
1603 return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
1604 }
1605
1606 if (path == NULL && abstract == NULL)
1607 {
1608 _dbus_set_bad_address (error, "unix",
1609 "path or abstract",
1610 NULL);
1611 return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
1612 }
1613
1614 if (path != NULL && abstract != NULL)
1615 {
1616 _dbus_set_bad_address (error, NULL, NULL,
1617 "can't specify both \"path\" and \"abstract\" options in an address");
1618 return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
1619 }
1620
1621 if (path)
1622 *transport_p = _dbus_transport_new_for_domain_socket (path, FALSE,
1623 error);
1624 else
1625 *transport_p = _dbus_transport_new_for_domain_socket (abstract, TRUE,
1626 error);
1627 if (*transport_p == NULL)
1628 {
1629 _DBUS_ASSERT_ERROR_IS_SET (error);
1630 return DBUS_TRANSPORT_OPEN_DID_NOT_CONNECT;
1631 }
1632 else
1633 {
1634 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1635 return DBUS_TRANSPORT_OPEN_OK;
1636 }
1637 }
1638 else
1639 {
1640 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1641 return DBUS_TRANSPORT_OPEN_NOT_HANDLED;
1642 }
1643}
1644
_dbus_address_append_escaped
dbus_bool_t _dbus_address_append_escaped(DBusString *escaped, const DBusString *unescaped)
Appends an escaped version of one string to another string, using the D-Bus address escaping mechanis...
Definition dbus-address.c:109
_dbus_set_bad_address
void _dbus_set_bad_address(DBusError *error, const char *address_problem_type, const char *address_problem_field, const char *address_problem_other)
Sets DBUS_ERROR_BAD_ADDRESS.
Definition dbus-address.c:70
dbus_address_entry_get_method
const char * dbus_address_entry_get_method(DBusAddressEntry *entry)
Returns the method string of an address entry.
Definition dbus-address.c:232
dbus_address_entry_get_value
const char * dbus_address_entry_get_value(DBusAddressEntry *entry, const char *key)
Returns a value from a key of an entry.
Definition dbus-address.c:249
_dbus_auth_do_work
DBusAuthState _dbus_auth_do_work(DBusAuth *auth)
Analyzes buffered input and moves the auth conversation forward, returning the new state of the auth ...
Definition dbus-auth.c:2548
_dbus_auth_encode_data
dbus_bool_t _dbus_auth_encode_data(DBusAuth *auth, const DBusString *plaintext, DBusString *encoded)
Called post-authentication, encodes a block of bytes for sending to the peer.
Definition dbus-auth.c:2735
_dbus_auth_needs_encoding
dbus_bool_t _dbus_auth_needs_encoding(DBusAuth *auth)
Called post-authentication, indicates whether we need to encode the message stream with _dbus_auth_en...
Definition dbus-auth.c:2708
_dbus_auth_set_credentials
dbus_bool_t _dbus_auth_set_credentials(DBusAuth *auth, DBusCredentials *credentials)
Sets credentials received via reliable means from the operating system.
Definition dbus-auth.c:2830
_dbus_auth_get_bytes_to_send
dbus_bool_t _dbus_auth_get_bytes_to_send(DBusAuth *auth, const DBusString **str)
Gets bytes that need to be sent to the peer we're conversing with.
Definition dbus-auth.c:2592
_dbus_auth_decode_data
dbus_bool_t _dbus_auth_decode_data(DBusAuth *auth, const DBusString *encoded, DBusString *plaintext)
Called post-authentication, decodes a block of bytes received from the peer.
Definition dbus-auth.c:2798
_dbus_auth_set_unix_fd_possible
void _dbus_auth_set_unix_fd_possible(DBusAuth *auth, dbus_bool_t b)
Sets whether unix fd passing is potentially on the transport and hence shall be negotiated.
Definition dbus-auth.c:2906
_dbus_auth_return_buffer
void _dbus_auth_return_buffer(DBusAuth *auth, DBusString *buffer)
Returns a buffer with new data read into it.
Definition dbus-auth.c:2655
_dbus_auth_get_buffer
void _dbus_auth_get_buffer(DBusAuth *auth, DBusString **buffer)
Get a buffer to be used for reading bytes from the peer we're conversing with.
Definition dbus-auth.c:2637
_dbus_auth_needs_decoding
dbus_bool_t _dbus_auth_needs_decoding(DBusAuth *auth)
Called post-authentication, indicates whether we need to decode the message stream with _dbus_auth_de...
Definition dbus-auth.c:2767
_dbus_auth_bytes_sent
void _dbus_auth_bytes_sent(DBusAuth *auth, int bytes_sent)
Notifies the auth conversation object that the given number of bytes of the outgoing buffer have been...
Definition dbus-auth.c:2617
_dbus_connection_handle_watch
dbus_bool_t _dbus_connection_handle_watch(DBusWatch *watch, unsigned int condition, void *data)
A callback for use with dbus_watch_new() to create a DBusWatch.
Definition dbus-connection.c:1500
_dbus_connection_has_messages_to_send_unlocked
dbus_bool_t _dbus_connection_has_messages_to_send_unlocked(DBusConnection *connection)
Checks whether there are messages in the outgoing message queue.
Definition dbus-connection.c:576
_dbus_connection_unlock
DBUS_PRIVATE_EXPORT void _dbus_connection_unlock(DBusConnection *connection)
Releases the connection lock.
Definition dbus-connection.c:403
_dbus_connection_lock
DBUS_PRIVATE_EXPORT void _dbus_connection_lock(DBusConnection *connection)
Acquires the connection lock.
Definition dbus-connection.c:392
_dbus_connection_remove_watch_unlocked
void _dbus_connection_remove_watch_unlocked(DBusConnection *connection, DBusWatch *watch)
Removes a watch using the connection's DBusRemoveWatchFunction if available.
Definition dbus-connection.c:765
_dbus_connection_toggle_watch_unlocked
void _dbus_connection_toggle_watch_unlocked(DBusConnection *connection, DBusWatch *watch, dbus_bool_t enabled)
Toggles a watch and notifies app via connection's DBusWatchToggledFunction if available.
Definition dbus-connection.c:785
_dbus_connection_add_watch_unlocked
dbus_bool_t _dbus_connection_add_watch_unlocked(DBusConnection *connection, DBusWatch *watch)
Adds a watch using the connection's DBusAddWatchFunction if available.
Definition dbus-connection.c:747
_dbus_connection_get_message_to_send
DBusMessage * _dbus_connection_get_message_to_send(DBusConnection *connection)
Gets the next outgoing message.
Definition dbus-connection.c:613
_dbus_connection_message_sent_unlocked
void _dbus_connection_message_sent_unlocked(DBusConnection *connection, DBusMessage *message)
Notifies the connection that a message has been sent, so the message can be removed from the outgoing...
Definition dbus-connection.c:629
DBUS_WATCH_READABLE
@ DBUS_WATCH_READABLE
As in POLLIN.
Definition dbus-connection.h:63
DBUS_WATCH_WRITABLE
@ DBUS_WATCH_WRITABLE
As in POLLOUT.
Definition dbus-connection.h:64
DBUS_WATCH_HANGUP
@ DBUS_WATCH_HANGUP
As in POLLHUP (can't watch for it, but can be present in current state passed to dbus_watch_handle())...
Definition dbus-connection.h:70
DBUS_WATCH_ERROR
@ DBUS_WATCH_ERROR
As in POLLERR (can't watch for this, but can be present in current state passed to dbus_watch_handle(...
Definition dbus-connection.h:65
DBUS_ERROR_INIT
#define DBUS_ERROR_INIT
Expands to a suitable initializer for a DBusError on the stack.
Definition dbus-errors.h:64
dbus_set_error
void dbus_set_error(DBusError *error, const char *name, const char *format,...)
Assigns an error name and message to a DBusError.
Definition dbus-errors.c:356
dbus_error_free
void dbus_error_free(DBusError *error)
Frees an error that's been set (or just initialized), then reinitializes the error as in dbus_error_i...
Definition dbus-errors.c:213
_dbus_get_is_errno_epipe
dbus_bool_t _dbus_get_is_errno_epipe(int e)
See if errno is EPIPE.
Definition dbus-sysdeps.c:700
_dbus_assert_not_reached
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
Definition dbus-internals.h:164
_dbus_get_is_errno_etoomanyrefs
dbus_bool_t _dbus_get_is_errno_etoomanyrefs(int e)
See if errno is ETOOMANYREFS.
Definition dbus-sysdeps.c:710
_dbus_assert
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
Definition dbus-internals.h:153
_dbus_get_is_errno_eintr
dbus_bool_t _dbus_get_is_errno_eintr(int e)
See if errno is EINTR.
Definition dbus-sysdeps.c:690
_dbus_get_is_errno_enomem
dbus_bool_t _dbus_get_is_errno_enomem(int e)
See if errno is ENOMEM.
Definition dbus-sysdeps.c:680
NULL
#define NULL
A null pointer, defined appropriately for C or C++.
Definition dbus-macros.h:51
TRUE
#define TRUE
Expands to "1".
Definition dbus-macros.h:41
FALSE
#define FALSE
Expands to "0".
Definition dbus-macros.h:44
dbus_free
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
Definition dbus-memory.c:710
dbus_new0
#define dbus_new0(type, count)
Safe macro for using dbus_malloc0().
Definition dbus-memory.h:60
dbus_message_lock
void dbus_message_lock(DBusMessage *message)
Locks a message.
Definition dbus-message.c:431
_dbus_message_get_unix_fds
DBUS_PRIVATE_EXPORT void _dbus_message_get_unix_fds(DBusMessage *message, const int **fds, unsigned *n_fds)
Gets the unix fds to be sent over the network for this message.
Definition dbus-message.c:262
_dbus_message_get_network_data
void _dbus_message_get_network_data(DBusMessage *message, const DBusString **header, const DBusString **body)
Gets the data to be sent over the network for this message.
Definition dbus-message.c:243
_dbus_message_loader_get_buffer
DBUS_PRIVATE_EXPORT void _dbus_message_loader_get_buffer(DBusMessageLoader *loader, DBusString **buffer, int *max_to_read, dbus_bool_t *may_read_unix_fds)
Gets the buffer to use for reading data from the network.
Definition dbus-message.c:4274
_dbus_message_loader_return_buffer
DBUS_PRIVATE_EXPORT void _dbus_message_loader_return_buffer(DBusMessageLoader *loader, DBusString *buffer)
Returns a buffer obtained from _dbus_message_loader_get_buffer(), indicating to the loader how many b...
Definition dbus-message.c:4380
DBUS_MAXIMUM_MESSAGE_LENGTH
#define DBUS_MAXIMUM_MESSAGE_LENGTH
The maximum total message size including header and body; similar rationale to max array size.
Definition dbus-protocol.h:212
DBUS_ERROR_NO_MEMORY
#define DBUS_ERROR_NO_MEMORY
There was not enough memory to complete an operation.
Definition dbus-protocol.h:363
_dbus_counter_get_unix_fd_value
long _dbus_counter_get_unix_fd_value(DBusCounter *counter)
Gets the current value of the unix fd counter.
Definition dbus-resources.c:292
_dbus_counter_get_size_value
long _dbus_counter_get_size_value(DBusCounter *counter)
Gets the current value of the size counter.
Definition dbus-resources.c:276
_dbus_string_set_length
dbus_bool_t _dbus_string_set_length(DBusString *str, int length)
Sets the length of a string.
Definition dbus-string.c:847
_dbus_string_append
dbus_bool_t _dbus_string_append(DBusString *str, const char *buffer)
Appends a nul-terminated C-style string to a DBusString.
Definition dbus-string.c:980
_dbus_string_init
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
Definition dbus-string.c:182
_dbus_string_init_const
void _dbus_string_init_const(DBusString *str, const char *value)
Initializes a constant string.
Definition dbus-string.c:197
_dbus_string_free
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init(), and fills it with the same contents as _DBUS_STRING_IN...
Definition dbus-string.c:278
_dbus_string_compact
dbus_bool_t _dbus_string_compact(DBusString *str, int max_waste)
Compacts the string to avoid wasted memory.
Definition dbus-string.c:420
_DBUS_POLLOUT
#define _DBUS_POLLOUT
Writing now will not block.
Definition dbus-sysdeps.h:448
_dbus_get_is_errno_eagain_or_ewouldblock
dbus_bool_t _dbus_get_is_errno_eagain_or_ewouldblock(int e)
See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently for Winsock so is abstracted)
Definition dbus-sysdeps-unix.c:4801
_dbus_read_socket
int _dbus_read_socket(DBusSocket fd, DBusString *buffer, int count)
Like _dbus_read(), but only works on sockets so is available on Windows.
Definition dbus-sysdeps-unix.c:338
_DBUS_POLLERR
#define _DBUS_POLLERR
Error condition.
Definition dbus-sysdeps.h:450
_dbus_socket_can_pass_unix_fd
dbus_bool_t _dbus_socket_can_pass_unix_fd(DBusSocket fd)
Checks whether file descriptors may be passed via the socket.
Definition dbus-sysdeps-unix.c:4850
_dbus_write_socket
int _dbus_write_socket(DBusSocket fd, const DBusString *buffer, int start, int len)
Like _dbus_write(), but only supports sockets and is thus available on Windows.
Definition dbus-sysdeps-unix.c:356
_dbus_read_socket_with_unix_fds
int _dbus_read_socket_with_unix_fds(DBusSocket fd, DBusString *buffer, int count, int *fds, unsigned int *n_fds)
Like _dbus_read_socket() but also tries to read unix fds from the socket.
Definition dbus-sysdeps-unix.c:394
_dbus_read_credentials_socket
dbus_bool_t _dbus_read_credentials_socket(DBusSocket client_fd, DBusCredentials *credentials, DBusError *error)
Reads a single byte which must be nul (an error occurs otherwise), and reads unix credentials if avai...
Definition dbus-sysdeps-unix.c:2209
_DBUS_POLLIN
#define _DBUS_POLLIN
There is data to read.
Definition dbus-sysdeps.h:444
_dbus_send_credentials_socket
dbus_bool_t _dbus_send_credentials_socket(DBusSocket server_fd, DBusError *error)
Sends a single nul byte with our UNIX credentials as ancillary data.
Definition dbus-sysdeps-unix.c:2568
_dbus_close_socket
dbus_bool_t _dbus_close_socket(DBusSocket *fd, DBusError *error)
Closes a socket and invalidates it.
Definition dbus-sysdeps-unix.c:314
_dbus_connect_unix_socket
DBusSocket _dbus_connect_unix_socket(const char *path, dbus_bool_t abstract, DBusError *error)
Creates a socket and connects it to the UNIX domain socket at the given path.
Definition dbus-sysdeps-unix.c:957
_dbus_poll
int _dbus_poll(DBusPollFD *fds, int n_fds, int timeout_milliseconds)
Wrapper for poll().
Definition dbus-sysdeps-unix.c:3303
_dbus_write_socket_two
int _dbus_write_socket_two(DBusSocket fd, const DBusString *buffer1, int start1, int len1, const DBusString *buffer2, int start2, int len2)
Like _dbus_write_two() but only works on sockets and is thus available on Windows.
Definition dbus-sysdeps-unix.c:694
_dbus_transport_open_socket
DBusTransportOpenResult _dbus_transport_open_socket(DBusAddressEntry *entry, DBusTransport **transport_p, DBusError *error)
Opens a TCP socket transport.
Definition dbus-transport-socket.c:1457
_dbus_transport_open_unix_socket
DBusTransportOpenResult _dbus_transport_open_unix_socket(DBusAddressEntry *entry, DBusTransport **transport_p, DBusError *error)
Opens a UNIX socket transport.
Definition dbus-transport-socket.c:1584
_dbus_transport_new_for_tcp_socket
DBusTransport * _dbus_transport_new_for_tcp_socket(const char *host, const char *port, const char *family, const char *noncefile, DBusError *error)
Creates a new transport for the given hostname and port.
Definition dbus-transport-socket.c:1379
_dbus_transport_new_for_socket
DBusTransport * _dbus_transport_new_for_socket(DBusSocket fd, const DBusString *server_guid, const DBusString *address)
Creates a new transport for the given socket file descriptor.
Definition dbus-transport-socket.c:1295
_dbus_transport_new_for_domain_socket
DBusTransport * _dbus_transport_new_for_domain_socket(const char *path, dbus_bool_t abstract, DBusError *error)
Creates a new transport for the given Unix domain socket path.
Definition dbus-transport-socket.c:1518
_dbus_transport_queue_messages
dbus_bool_t _dbus_transport_queue_messages(DBusTransport *transport)
Processes data we've read while handling a watch, potentially converting some of it to messages and q...
Definition dbus-transport.c:1166
_dbus_transport_ref
DBusTransport * _dbus_transport_ref(DBusTransport *transport)
Increments the reference count for the transport.
Definition dbus-transport.c:469
_dbus_transport_disconnect
void _dbus_transport_disconnect(DBusTransport *transport)
Closes our end of the connection to a remote application.
Definition dbus-transport.c:511
_dbus_transport_init_base
dbus_bool_t _dbus_transport_init_base(DBusTransport *transport, const DBusTransportVTable *vtable, const DBusString *server_guid, const DBusString *address)
Initializes the base class members of DBusTransport.
Definition dbus-transport.c:104
_dbus_transport_unref
void _dbus_transport_unref(DBusTransport *transport)
Decrements the reference count for the transport.
Definition dbus-transport.c:486
_dbus_transport_try_to_authenticate
dbus_bool_t _dbus_transport_try_to_authenticate(DBusTransport *transport)
Returns TRUE if we have been authenticated.
Definition dbus-transport.c:733
_dbus_transport_get_is_connected
dbus_bool_t _dbus_transport_get_is_connected(DBusTransport *transport)
Returns TRUE if the transport has not been disconnected.
Definition dbus-transport.c:536
_dbus_transport_finalize_base
void _dbus_transport_finalize_base(DBusTransport *transport)
Finalizes base class members of DBusTransport.
Definition dbus-transport.c:218
_dbus_watch_set_handler
void _dbus_watch_set_handler(DBusWatch *watch, DBusWatchHandler handler, void *data, DBusFreeFunction free_data_function)
Sets the handler for the watch.
Definition dbus-watch.c:500
_dbus_watch_new
DBusWatch * _dbus_watch_new(DBusPollable fd, unsigned int flags, dbus_bool_t enabled, DBusWatchHandler handler, void *data, DBusFreeFunction free_data_function)
Creates a new DBusWatch.
Definition dbus-watch.c:90
_dbus_watch_unref
void _dbus_watch_unref(DBusWatch *watch)
Decrements the reference count of a DBusWatch object and finalizes the object if the count reaches ze...
Definition dbus-watch.c:140
_dbus_watch_invalidate
void _dbus_watch_invalidate(DBusWatch *watch)
Clears the file descriptor from a now-invalid watch object so that no one tries to use it.
Definition dbus-watch.c:171
dbus_watch_get_enabled
DBUS_EXPORT dbus_bool_t dbus_watch_get_enabled(DBusWatch *watch)
Returns whether a watch is enabled or not.
Definition dbus-watch.c:704
DBusAddressEntry
Internals of DBusAddressEntry.
Definition dbus-address.c:49
DBusError
Object representing an exception.
Definition dbus-errors.h:51
DBusError::message
const char * message
public error message field
Definition dbus-errors.h:53
DBusMessage
Internals of DBusMessage.
Definition dbus-message-private.h:102
DBusPollFD
Definition dbus-sysdeps.h:437
DBusPollFD::events
short events
Events to poll for.
Definition dbus-sysdeps.h:439
DBusPollFD::revents
short revents
Events that occurred.
Definition dbus-sysdeps.h:440
DBusPollFD::fd
DBusPollable fd
File descriptor.
Definition dbus-sysdeps.h:438
DBusSocket
Socket interface.
Definition dbus-sysdeps.h:185
DBusString
Definition dbus-string.h:47
DBusTransportSocket
Implementation details of DBusTransportSocket.
Definition dbus-transport-socket.c:55
DBusTransportSocket::write_watch
DBusWatch * write_watch
Watch for writability.
Definition dbus-transport-socket.c:59
DBusTransportSocket::message_bytes_written
int message_bytes_written
Number of bytes of current outgoing message that have been written.
Definition dbus-transport-socket.c:64
DBusTransportSocket::max_bytes_written_per_iteration
int max_bytes_written_per_iteration
To avoid blocking too long.
Definition dbus-transport-socket.c:62
DBusTransportSocket::encoded_incoming
DBusString encoded_incoming
Encoded version of current incoming data.
Definition dbus-transport-socket.c:71
DBusTransportSocket::encoded_outgoing
DBusString encoded_outgoing
Encoded version of current outgoing message.
Definition dbus-transport-socket.c:68
DBusTransportSocket::fd
DBusSocket fd
File descriptor.
Definition dbus-transport-socket.c:57
DBusTransportSocket::base
DBusTransport base
Parent instance.
Definition dbus-transport-socket.c:56
DBusTransportSocket::read_watch
DBusWatch * read_watch
Watch for readability.
Definition dbus-transport-socket.c:58
DBusTransportSocket::max_bytes_read_per_iteration
int max_bytes_read_per_iteration
To avoid blocking too long.
Definition dbus-transport-socket.c:61
DBusTransportVTable
The virtual table that must be implemented to create a new kind of transport.
Definition dbus-transport-protected.h:44
DBusTransport
Object representing a transport such as a socket.
Definition dbus-transport-protected.h:83
DBusTransport::max_live_messages_size
long max_live_messages_size
Max total size of received messages.
Definition dbus-transport-protected.h:96
DBusTransport::max_live_messages_unix_fds
long max_live_messages_unix_fds
Max total unix fds of received messages.
Definition dbus-transport-protected.h:97
DBusTransport::disconnected
unsigned int disconnected
TRUE if we are disconnected.
Definition dbus-transport-protected.h:115
DBusTransport::send_credentials_pending
unsigned int send_credentials_pending
TRUE if we need to send credentials
Definition dbus-transport-protected.h:117
DBusTransport::connection
DBusConnection * connection
Connection owning this transport.
Definition dbus-transport-protected.h:88
DBusTransport::receive_credentials_pending
unsigned int receive_credentials_pending
TRUE if we need to receive credentials
Definition dbus-transport-protected.h:118
DBusTransport::loader
DBusMessageLoader * loader
Message-loading buffer.
Definition dbus-transport-protected.h:90
DBusTransport::credentials
DBusCredentials * credentials
Credentials of other end read from the socket.
Definition dbus-transport-protected.h:94
DBusTransport::auth
DBusAuth * auth
Authentication conversation.
Definition dbus-transport-protected.h:92
DBusTransport::live_messages
DBusCounter * live_messages
Counter for size/unix fds of all live messages.
Definition dbus-transport-protected.h:99
DBusWatch
Implementation of DBusWatch.
Definition dbus-watch.c:43