1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright (C) 2013 Samsung Electronics
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
18 * Boston, MA 02111-1307, USA.
20 * Author: Michal Eljasiewicz <m.eljasiewic@samsung.com>
21 * Author: Lukasz Skalski <l.skalski@samsung.com>
26 #include "glib-unix.h"
34 #include <sys/ioctl.h>
38 #ifdef HAVE_SYS_FILIO_H
39 # include <sys/filio.h>
46 #include <glib/gstdio.h>
47 #include <glib/glib-private.h>
49 #include <gio/gunixfdlist.h>
52 #include "gunixfdmessage.h"
54 #define KDBUS_TIMEOUT_NS 2000000000LU
55 #define KDBUS_POOL_SIZE (16 * 1024LU * 1024LU)
56 #define KDBUS_ALIGN8(l) (((l) + 7) & ~7)
57 #define KDBUS_ALIGN8_PTR(p) ((void*) (uintptr_t)(p))
59 #define KDBUS_ITEM_HEADER_SIZE G_STRUCT_OFFSET(struct kdbus_item, data)
60 #define KDBUS_ITEM_SIZE(s) KDBUS_ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
62 #define KDBUS_ITEM_NEXT(item) \
63 (typeof(item))(((guint8 *)item) + KDBUS_ALIGN8((item)->size))
64 #define KDBUS_ITEM_FOREACH(item, head, first) \
65 for (item = (head)->first; \
66 (guint8 *)(item) < (guint8 *)(head) + (head)->size; \
67 item = KDBUS_ITEM_NEXT(item))
69 #define g_alloca0(x) memset(g_alloca(x), '\0', (x))
71 struct dbus_fixed_header {
80 #define DBUS_FIXED_HEADER_TYPE ((const GVariantType *) "(yyyyut)")
81 #define DBUS_EXTENDED_HEADER_TYPE ((const GVariantType *) "a{tv}")
82 #define DBUS_MESSAGE_TYPE ((const GVariantType *) "((yyyyut)a{tv}v)")
84 #define KDBUS_MSG_MAX_SIZE 8192
90 G_BUS_CREDS_UNIQUE_NAME = 3,
91 G_BUS_CREDS_SELINUX_CONTEXT = 4
92 } GBusCredentialsFlags;
94 typedef GObjectClass GKDBusWorkerClass;
98 GObject parent_instance;
102 GMainContext *context;
111 guint64 attach_flags_send;
112 guint64 attach_flags_recv;
124 GDBusCapabilityFlags capabilities;
125 GDBusWorkerMessageReceivedCallback message_received_callback;
126 GDBusWorkerMessageAboutToBeSentCallback message_about_to_be_sent_callback;
127 GDBusWorkerDisconnectedCallback disconnected_callback;
131 static gssize _g_kdbus_receive (GKDBusWorker *kdbus,
132 GCancellable *cancellable,
135 G_DEFINE_TYPE (GKDBusWorker, g_kdbus_worker, G_TYPE_OBJECT)
137 /* Hash keys for bloom filters*/
138 const guint8 hash_keys[8][16] =
140 {0xb9,0x66,0x0b,0xf0,0x46,0x70,0x47,0xc1,0x88,0x75,0xc4,0x9c,0x54,0xb9,0xbd,0x15},
141 {0xaa,0xa1,0x54,0xa2,0xe0,0x71,0x4b,0x39,0xbf,0xe1,0xdd,0x2e,0x9f,0xc5,0x4a,0x3b},
142 {0x63,0xfd,0xae,0xbe,0xcd,0x82,0x48,0x12,0xa1,0x6e,0x41,0x26,0xcb,0xfa,0xa0,0xc8},
143 {0x23,0xbe,0x45,0x29,0x32,0xd2,0x46,0x2d,0x82,0x03,0x52,0x28,0xfe,0x37,0x17,0xf5},
144 {0x56,0x3b,0xbf,0xee,0x5a,0x4f,0x43,0x39,0xaf,0xaa,0x94,0x08,0xdf,0xf0,0xfc,0x10},
145 {0x31,0x80,0xc8,0x73,0xc7,0xea,0x46,0xd3,0xaa,0x25,0x75,0x0f,0x9e,0x4c,0x09,0x29},
146 {0x7d,0xf7,0x18,0x4b,0x7b,0xa4,0x44,0xd5,0x85,0x3c,0x06,0xe0,0x65,0x53,0x96,0x6d},
147 {0xf2,0x77,0xe9,0x6f,0x93,0xb5,0x4e,0x71,0x9a,0x0c,0x34,0x88,0x39,0x25,0xbf,0x35}
155 g_kdbus_worker_finalize (GObject *object)
157 GKDBusWorker *kdbus = G_KDBUS_WORKER (object);
159 if (kdbus->kdbus_buffer != NULL)
160 munmap (kdbus->kdbus_buffer, KDBUS_POOL_SIZE);
162 kdbus->kdbus_buffer = NULL;
164 if (kdbus->fd != -1 && !kdbus->closed)
165 _g_kdbus_close (kdbus);
167 G_OBJECT_CLASS (g_kdbus_worker_parent_class)->finalize (object);
171 g_kdbus_worker_class_init (GKDBusWorkerClass *class)
173 class->finalize = g_kdbus_worker_finalize;
177 g_kdbus_worker_init (GKDBusWorker *kdbus)
181 kdbus->unique_id = -1;
182 kdbus->unique_name = NULL;
184 kdbus->kdbus_buffer = NULL;
186 kdbus->flags = 0; /* KDBUS_HELLO_ACCEPT_FD */
187 kdbus->attach_flags_send = _KDBUS_ATTACH_ALL;
188 kdbus->attach_flags_recv = _KDBUS_ATTACH_ALL;
192 kdbus_ready (gint fd,
193 GIOCondition condition,
196 GKDBusWorker *kdbus = user_data;
197 GError *error = NULL;
199 _g_kdbus_receive (kdbus, NULL, &error);
200 g_assert_no_error (error);
202 return G_SOURCE_CONTINUE;
206 _g_kdbus_open (GKDBusWorker *worker,
207 const gchar *address,
210 g_return_val_if_fail (G_IS_KDBUS_WORKER (worker), FALSE);
212 worker->fd = open(address, O_RDWR|O_NOCTTY|O_CLOEXEC);
215 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED, _("Can't open kdbus endpoint"));
219 worker->closed = FALSE;
230 g_kdbus_free_data (GKDBusWorker *kdbus,
233 struct kdbus_cmd_free cmd;
239 ret = ioctl (kdbus->fd, KDBUS_CMD_FREE, &cmd);
248 * g_kdbus_translate_nameowner_flags:
252 g_kdbus_translate_nameowner_flags (GBusNameOwnerFlags flags,
253 guint64 *kdbus_flags)
259 if (flags & G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT)
260 new_flags |= KDBUS_NAME_ALLOW_REPLACEMENT;
262 if (flags & G_BUS_NAME_OWNER_FLAGS_REPLACE)
263 new_flags |= KDBUS_NAME_REPLACE_EXISTING;
265 if (!(flags & G_BUS_NAME_OWNER_FLAGS_DO_NOT_QUEUE))
266 new_flags |= KDBUS_NAME_QUEUE;
268 *kdbus_flags = new_flags;
277 _g_kdbus_close (GKDBusWorker *kdbus)
279 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), FALSE);
284 g_source_destroy (kdbus->source);
287 g_main_context_unref (kdbus->context);
288 kdbus->context = NULL;
293 kdbus->closed = TRUE;
297 * _g_kdbus_is_closed:
301 _g_kdbus_is_closed (GKDBusWorker *kdbus)
303 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), FALSE);
305 return kdbus->closed;
314 _g_kdbus_Hello (GKDBusWorker *worker,
317 struct kdbus_cmd_hello *hello;
318 struct kdbus_item *item;
321 size_t size, conn_name_size;
323 conn_name = "gdbus-kdbus";
324 conn_name_size = strlen (conn_name);
326 size = KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_cmd_hello, items)) +
327 KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, str) + conn_name_size + 1);
329 hello = g_alloca0 (size);
330 hello->flags = worker->flags;
331 hello->attach_flags_send = worker->attach_flags_send;
332 hello->attach_flags_recv = worker->attach_flags_recv;
334 hello->pool_size = KDBUS_POOL_SIZE;
337 item->size = G_STRUCT_OFFSET (struct kdbus_item, str) + conn_name_size + 1;
338 item->type = KDBUS_ITEM_CONN_DESCRIPTION;
339 memcpy (item->str, conn_name, conn_name_size+1);
340 item = KDBUS_ITEM_NEXT (item);
342 if (ioctl(worker->fd, KDBUS_CMD_HELLO, hello))
344 g_set_error (error, G_IO_ERROR,
345 g_io_error_from_errno (errno),
346 _("Failed to send HELLO: %s"),
351 worker->kdbus_buffer = mmap(NULL, KDBUS_POOL_SIZE, PROT_READ, MAP_SHARED, worker->fd, 0);
352 if (worker->kdbus_buffer == MAP_FAILED)
354 g_set_error (error, G_IO_ERROR,
355 g_io_error_from_errno (errno),
361 if (hello->bus_flags > 0xFFFFFFFFULL)
363 g_set_error_literal (error,
366 _("Incompatible HELLO flags"));
370 memcpy (worker->bus_id, hello->id128, 16);
372 worker->unique_id = hello->id;
373 asprintf(&worker->unique_name, ":1.%llu", (unsigned long long) hello->id);
375 /* read bloom filters parameters */
376 //worker->bloom_size = (gsize) hello->bloom.size;
377 //worker->bloom_n_hash = (guint) hello->bloom.n_hash;
379 return g_variant_new ("(s)", worker->unique_name);
384 * _g_kdbus_RequestName:
388 _g_kdbus_RequestName (GKDBusWorker *worker,
390 GBusNameOwnerFlags flags,
394 struct kdbus_cmd_name *kdbus_name;
399 status = G_BUS_REQUEST_NAME_FLAGS_PRIMARY_OWNER;
401 if (!g_dbus_is_name (name))
405 G_DBUS_ERROR_INVALID_ARGS,
406 "Given bus name \"%s\" is not valid", name);
414 G_DBUS_ERROR_INVALID_ARGS,
415 "Cannot acquire a service starting with ':' such as \"%s\"", name);
419 g_kdbus_translate_nameowner_flags (flags, &kdbus_flags);
421 len = strlen(name) + 1;
422 size = G_STRUCT_OFFSET (struct kdbus_cmd_name, items) + KDBUS_ITEM_SIZE(len);
423 kdbus_name = g_alloca0 (size);
424 kdbus_name->size = size;
425 kdbus_name->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
426 kdbus_name->items[0].type = KDBUS_ITEM_NAME;
427 kdbus_name->flags = kdbus_flags;
428 memcpy (kdbus_name->items[0].str, name, len);
430 ret = ioctl(worker->fd, KDBUS_CMD_NAME_ACQUIRE, kdbus_name);
434 status = G_BUS_REQUEST_NAME_FLAGS_EXISTS;
435 else if (errno == EALREADY)
436 status = G_BUS_REQUEST_NAME_FLAGS_ALREADY_OWNER;
439 g_set_error (error, G_IO_ERROR,
440 g_io_error_from_errno (errno),
441 _("Error while acquiring name: %s"),
447 if (kdbus_name->flags & KDBUS_NAME_IN_QUEUE)
448 status = G_BUS_REQUEST_NAME_FLAGS_IN_QUEUE;
450 result = g_variant_new ("(u)", status);
457 * _g_kdbus_ReleaseName:
461 _g_kdbus_ReleaseName (GKDBusWorker *worker,
466 struct kdbus_cmd_name *kdbus_name;
470 status = G_BUS_RELEASE_NAME_FLAGS_RELEASED;
472 if (!g_dbus_is_name (name))
476 G_DBUS_ERROR_INVALID_ARGS,
477 "Given bus name \"%s\" is not valid", name);
485 G_DBUS_ERROR_INVALID_ARGS,
486 "Cannot release a service starting with ':' such as \"%s\"", name);
490 len = strlen(name) + 1;
491 size = G_STRUCT_OFFSET (struct kdbus_cmd_name, items) + KDBUS_ITEM_SIZE(len);
492 kdbus_name = g_alloca0 (size);
493 kdbus_name->size = size;
494 kdbus_name->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
495 kdbus_name->items[0].type = KDBUS_ITEM_NAME;
496 memcpy (kdbus_name->items[0].str, name, len);
498 ret = ioctl(worker->fd, KDBUS_CMD_NAME_RELEASE, kdbus_name);
502 status = G_BUS_RELEASE_NAME_FLAGS_NON_EXISTENT;
503 else if (errno == EADDRINUSE)
504 status = G_BUS_RELEASE_NAME_FLAGS_NOT_OWNER;
507 g_set_error (error, G_IO_ERROR,
508 g_io_error_from_errno (errno),
509 _("Error while releasing name: %s"),
515 result = g_variant_new ("(u)", status);
526 _g_kdbus_GetBusId (GKDBusWorker *worker,
533 result_str = g_string_new (NULL);
535 for (cnt=0; cnt<16; cnt++)
536 g_string_append_printf (result_str, "%02x", worker->bus_id[cnt]);
538 result = g_variant_new ("(s)", result_str->str);
539 g_string_free (result_str, TRUE);
546 * _g_kdbus_GetListNames:
550 _g_kdbus_GetListNames (GKDBusWorker *worker,
551 guint list_name_type,
555 GVariantBuilder *builder;
557 struct kdbus_cmd_name_list cmd = {};
558 struct kdbus_name_list *name_list;
559 struct kdbus_name_info *name;
567 cmd.flags = KDBUS_NAME_LIST_ACTIVATORS; /* ListActivatableNames */
569 cmd.flags = KDBUS_NAME_LIST_UNIQUE | KDBUS_NAME_LIST_NAMES; /* ListNames */
571 ret = ioctl(worker->fd, KDBUS_CMD_NAME_LIST, &cmd);
577 _("Error listing names"));
581 name_list = (struct kdbus_name_list *) ((guint8 *) worker->kdbus_buffer + cmd.offset);
582 builder = g_variant_builder_new (G_VARIANT_TYPE ("as"));
584 KDBUS_ITEM_FOREACH(name, name_list, names)
586 struct kdbus_item *item;
587 const gchar *item_name = "";
589 if ((cmd.flags & KDBUS_NAME_LIST_UNIQUE) && name->owner_id != prev_id)
591 GString *unique_name;
593 unique_name = g_string_new (NULL);
594 g_string_printf (unique_name, ":1.%llu", name->owner_id);
595 g_variant_builder_add (builder, "s", unique_name->str);
596 g_string_free (unique_name,TRUE);
597 prev_id = name->owner_id;
600 KDBUS_ITEM_FOREACH(item, name, items)
601 if (item->type == KDBUS_ITEM_OWNED_NAME)
602 item_name = item->name.name;
604 if (g_dbus_is_name (item_name))
605 g_variant_builder_add (builder, "s", item_name);
608 result = g_variant_new ("(as)", builder);
609 g_variant_builder_unref (builder);
611 g_kdbus_free_data (worker, cmd.offset);
617 * _g_kdbus_NameHasOwner_internal:
621 g_kdbus_NameHasOwner_internal (GKDBusWorker *worker,
625 struct kdbus_cmd_info *cmd;
629 if (g_dbus_is_unique_name(name))
631 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items);
632 cmd = g_alloca0 (size);
633 cmd->id = g_ascii_strtoull (name+3, NULL, 10);
637 len = strlen(name) + 1;
638 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items) + KDBUS_ITEM_SIZE(len);
639 cmd = g_alloca0 (size);
640 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
641 cmd->items[0].type = KDBUS_ITEM_NAME;
642 memcpy (cmd->items[0].str, name, len);
646 ret = ioctl(worker->fd, KDBUS_CMD_CONN_INFO, cmd);
647 g_kdbus_free_data (worker, cmd->offset);
657 * _g_kdbus_GetListQueuedOwners:
661 _g_kdbus_GetListQueuedOwners (GKDBusWorker *worker,
666 GVariantBuilder *builder;
667 GString *unique_name;
670 struct kdbus_cmd_name_list cmd = {};
671 struct kdbus_name_list *name_list;
672 struct kdbus_name_info *kname;
674 if (!g_dbus_is_name (name))
678 G_DBUS_ERROR_INVALID_ARGS,
679 "Given bus name \"%s\" is not valid", name);
683 if (!g_kdbus_NameHasOwner_internal (worker, name, error))
687 G_DBUS_ERROR_NAME_HAS_NO_OWNER,
688 "Could not get owner of name '%s': no such name", name);
692 cmd.flags = KDBUS_NAME_LIST_QUEUED;
693 ret = ioctl(worker->fd, KDBUS_CMD_NAME_LIST, &cmd);
699 _("Error listing names"));
703 name_list = (struct kdbus_name_list *) ((guint8 *) worker->kdbus_buffer + cmd.offset);
705 unique_name = g_string_new (NULL);
706 builder = g_variant_builder_new (G_VARIANT_TYPE ("as"));
707 KDBUS_ITEM_FOREACH(kname, name_list, names)
709 struct kdbus_item *item;
710 const char *item_name = "";
712 KDBUS_ITEM_FOREACH(item, kname, items)
713 if (item->type == KDBUS_ITEM_NAME)
714 item_name = item->str;
716 if (strcmp(item_name, name))
719 g_string_printf (unique_name, ":1.%llu", kname->owner_id);
720 g_variant_builder_add (builder, "s", item_name);
723 result = g_variant_new ("(as)", builder);
724 g_variant_builder_unref (builder);
725 g_string_free (unique_name,TRUE);
727 g_kdbus_free_data (worker, cmd.offset);
733 * g_kdbus_GetConnInfo_internal:
737 g_kdbus_GetConnInfo_internal (GKDBusWorker *worker,
744 struct kdbus_cmd_info *cmd;
745 struct kdbus_info *conn_info;
746 struct kdbus_item *item;
752 if (!g_dbus_is_name (name))
756 G_DBUS_ERROR_INVALID_ARGS,
757 "Given bus name \"%s\" is not valid", name);
761 if (!g_kdbus_NameHasOwner_internal (worker, name, error))
765 G_DBUS_ERROR_NAME_HAS_NO_OWNER,
766 "Could not get owner of name '%s': no such name", name);
770 if (g_dbus_is_unique_name(name))
772 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items);
773 cmd = g_alloca0 (size);
774 cmd->id = g_ascii_strtoull (name+3, NULL, 10);
778 len = strlen(name) + 1;
779 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items) + KDBUS_ITEM_SIZE(len);
780 cmd = g_alloca0 (size);
781 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
782 cmd->items[0].type = KDBUS_ITEM_NAME;
783 memcpy (cmd->items[0].str, name, len);
786 cmd->flags = _KDBUS_ATTACH_ALL;
789 ret = ioctl(worker->fd, KDBUS_CMD_CONN_INFO, cmd);
795 _("Could not get connection info"));
799 conn_info = (struct kdbus_info *) ((guint8 *) worker->kdbus_buffer + cmd->offset);
802 if (conn_info->flags & KDBUS_HELLO_ACTIVATOR)
806 if (flag == G_BUS_CREDS_UNIQUE_NAME)
808 GString *unique_name;
810 unique_name = g_string_new (NULL);
811 g_string_printf (unique_name, ":1.%llu", (unsigned long long) conn_info->id);
812 result = g_variant_new ("(s)", unique_name->str);
813 g_string_free (unique_name,TRUE);
817 KDBUS_ITEM_FOREACH(item, conn_info, items)
821 case KDBUS_ITEM_PIDS:
823 if (flag == G_BUS_CREDS_PID)
825 guint pid = item->pids.pid;
826 result = g_variant_new ("(u)", pid);
830 case KDBUS_ITEM_CREDS:
832 if (flag == G_BUS_CREDS_UID)
834 guint uid = item->creds.uid;
835 result = g_variant_new ("(u)", uid);
839 case KDBUS_ITEM_SECLABEL:
840 case KDBUS_ITEM_PID_COMM:
841 case KDBUS_ITEM_TID_COMM:
843 case KDBUS_ITEM_CMDLINE:
844 case KDBUS_ITEM_CGROUP:
845 case KDBUS_ITEM_CAPS:
846 case KDBUS_ITEM_AUDIT:
847 case KDBUS_ITEM_CONN_DESCRIPTION:
848 case KDBUS_ITEM_AUXGROUPS:
849 case KDBUS_ITEM_OWNED_NAME:
855 g_kdbus_free_data (worker, cmd->offset);
861 * _g_kdbus_GetNameOwner:
865 _g_kdbus_GetNameOwner (GKDBusWorker *worker,
869 return g_kdbus_GetConnInfo_internal (worker,
871 G_BUS_CREDS_UNIQUE_NAME,
877 * _g_kdbus_GetConnectionUnixProcessID:
881 _g_kdbus_GetConnectionUnixProcessID (GKDBusWorker *worker,
885 return g_kdbus_GetConnInfo_internal (worker,
893 * _g_kdbus_GetConnectionUnixUser:
897 _g_kdbus_GetConnectionUnixUser (GKDBusWorker *worker,
901 return g_kdbus_GetConnInfo_internal (worker,
909 * _g_kdbus_match_remove:
913 _g_kdbus_match_remove (GKDBusWorker *worker,
916 struct kdbus_cmd_match cmd_match = {};
919 cmd_match.size = sizeof (cmd_match);
920 cmd_match.cookie = cookie;
922 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_REMOVE, &cmd_match);
924 g_warning ("ERROR - %d\n", (int) errno);
929 * _g_kdbus_subscribe_name_acquired:
933 _g_kdbus_subscribe_name_owner_changed (GKDBusWorker *worker,
935 const gchar *old_name,
936 const gchar *new_name,
939 struct kdbus_item *item;
940 struct kdbus_cmd_match *cmd_match;
943 guint64 old_id = 0; /* XXX why? */
944 guint64 new_id = KDBUS_MATCH_ID_ANY;
946 len = strlen(name) + 1;
947 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
948 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
949 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
951 cmd_match = g_alloca0 (size);
952 cmd_match->size = size;
953 cmd_match->cookie = cookie;
954 item = cmd_match->items;
956 if (old_name[0] == 0)
958 old_id = KDBUS_MATCH_ID_ANY;
962 if (g_dbus_is_unique_name(old_name))
968 if (new_name[0] == 0)
970 new_id = KDBUS_MATCH_ID_ANY;
974 if (g_dbus_is_unique_name(new_name))
980 cmd_match = g_alloca0 (size);
981 cmd_match->size = size;
982 cmd_match->cookie = cookie;
983 item = cmd_match->items;
985 /* KDBUS_ITEM_NAME_CHANGE */
986 item->type = KDBUS_ITEM_NAME_CHANGE;
987 item->name_change.old_id.id = old_id;
988 item->name_change.new_id.id = new_id;
989 memcpy(item->name_change.name, name, len);
990 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
991 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
992 item = KDBUS_ITEM_NEXT(item);
994 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd_match);
996 g_warning ("ERROR - %d\n", (int) errno);
1001 * _g_kdbus_subscribe_name_acquired:
1005 _g_kdbus_subscribe_name_acquired (GKDBusWorker *worker,
1008 struct kdbus_item *item;
1009 struct kdbus_cmd_match *cmd_match;
1014 len = strlen(name) + 1;
1015 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1016 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1017 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1019 cookie = 0xbeefbeefbeefbeef;
1020 cmd_match = g_alloca0 (size);
1021 cmd_match->size = size;
1022 cmd_match->cookie = cookie;
1023 item = cmd_match->items;
1025 /* KDBUS_ITEM_NAME_ADD */
1026 item->type = KDBUS_ITEM_NAME_ADD;
1027 item->name_change.old_id.id = KDBUS_MATCH_ID_ANY;
1028 item->name_change.new_id.id = worker->unique_id;
1029 memcpy(item->name_change.name, name, len);
1030 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1031 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1032 item = KDBUS_ITEM_NEXT(item);
1034 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd_match);
1036 g_warning ("ERROR - %d\n", (int) errno);
1038 _g_kdbus_subscribe_name_owner_changed (worker, name, "", worker->unique_name, cookie);
1043 * _g_kdbus_subscribe_name_lost:
1047 _g_kdbus_subscribe_name_lost (GKDBusWorker *worker,
1050 struct kdbus_item *item;
1051 struct kdbus_cmd_match *cmd_match;
1056 len = strlen(name) + 1;
1057 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1058 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1059 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1061 cookie = 0xdeafdeafdeafdeaf;
1062 cmd_match = g_alloca0 (size);
1063 cmd_match->size = size;
1064 cmd_match->cookie = cookie;
1065 item = cmd_match->items;
1067 /* KDBUS_ITEM_NAME_REMOVE */
1068 item->type = KDBUS_ITEM_NAME_REMOVE;
1069 item->name_change.old_id.id = worker->unique_id;
1070 item->name_change.new_id.id = KDBUS_MATCH_ID_ANY;
1071 memcpy(item->name_change.name, name, len);
1072 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1073 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1074 item = KDBUS_ITEM_NEXT(item);
1076 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd_match);
1078 g_warning ("ERROR - %d\n", (int) errno);
1080 _g_kdbus_subscribe_name_owner_changed (worker, name, worker->unique_name, "", cookie);
1085 * _g_kdbus_unsubscribe_name_acquired:
1089 _g_kdbus_unsubscribe_name_acquired (GKDBusWorker *worker)
1093 cookie = 0xbeefbeefbeefbeef;
1094 _g_kdbus_match_remove (worker, cookie);
1099 * _g_kdbus_unsubscribe_name_lost:
1103 _g_kdbus_unsubscribe_name_lost (GKDBusWorker *worker)
1107 cookie = 0xdeafdeafdeafdeaf;
1108 _g_kdbus_match_remove (worker, cookie);
1113 * g_kdbus_append_payload_bloom:
1116 static struct kdbus_bloom_filter *
1117 g_kdbus_append_bloom (struct kdbus_item **item,
1120 struct kdbus_item *bloom_item;
1122 bloom_item = KDBUS_ALIGN8_PTR(*item);
1123 bloom_item->size = G_STRUCT_OFFSET (struct kdbus_item, bloom_filter) +
1124 G_STRUCT_OFFSET (struct kdbus_bloom_filter, data) +
1127 bloom_item->type = KDBUS_ITEM_BLOOM_FILTER;
1129 *item = KDBUS_ITEM_NEXT(bloom_item);
1130 return &bloom_item->bloom_filter;
1135 * g_kdbus_bloom_add_data:
1136 * Based on bus-bloom.c from systemd
1137 * http://cgit.freedesktop.org/systemd/systemd/tree/src/libsystemd/sd-bus/bus-bloom.c
1140 g_kdbus_bloom_add_data (GKDBusWorker *worker,
1141 guint64 bloom_data [],
1147 guint bytes_num = 0;
1153 bit_num = worker->bloom_size * 8;
1156 bytes_num = ((__builtin_clzll(bit_num) ^ 63U) + 7) / 8;
1158 for (cnt_1 = 0; cnt_1 < (worker->bloom_n_hash); cnt_1++)
1160 for (cnt_2 = 0; cnt_2 < bytes_num; cnt_2++)
1164 g_siphash24(hash, data, n, hash_keys[cnt_1++]);
1168 p = (p << 8ULL) | (guint64) hash[8 - c];
1173 bloom_data[p >> 6] |= 1ULL << (p & 63);
1179 * g_kdbus_bloom_add_pair:
1183 g_kdbus_bloom_add_pair (GKDBusWorker *worker,
1184 guint64 bloom_data [],
1185 const gchar *parameter,
1188 GString *data = g_string_new (NULL);
1190 g_string_printf (data,"%s:%s",parameter,value);
1191 g_kdbus_bloom_add_data(worker, bloom_data, data->str, data->len);
1192 g_string_free (data, TRUE);
1197 * g_kdbus_bloom_add_prefixes:
1201 g_kdbus_bloom_add_prefixes (GKDBusWorker *worker,
1202 guint64 bloom_data [],
1203 const gchar *parameter,
1207 GString *data = g_string_new (NULL);
1209 g_string_printf (data,"%s:%s",parameter,value);
1214 last_sep = strrchr(data->str, separator);
1215 if (!last_sep || last_sep == data->str)
1219 g_kdbus_bloom_add_data(worker, bloom_data, data->str, last_sep-(data->str));
1221 g_string_free (data, TRUE);
1226 * g_kdbus_setup_bloom:
1227 * Based on bus-bloom.c from systemd
1228 * http://cgit.freedesktop.org/systemd/systemd/tree/src/libsystemd/sd-bus/bus-bloom.c
1231 g_kdbus_setup_bloom (GKDBusWorker *worker,
1232 GDBusMessage *dbus_msg,
1233 struct kdbus_bloom_filter *bloom_filter)
1237 const gchar *message_type;
1238 const gchar *interface;
1239 const gchar *member;
1244 body = g_dbus_message_get_body (dbus_msg);
1245 message_type = _g_dbus_enum_to_string (G_TYPE_DBUS_MESSAGE_TYPE, g_dbus_message_get_message_type (dbus_msg));
1246 interface = g_dbus_message_get_interface (dbus_msg);
1247 member = g_dbus_message_get_member (dbus_msg);
1248 path = g_dbus_message_get_path (dbus_msg);
1250 bloom_data = bloom_filter->data;
1251 memset (bloom_data, 0, worker->bloom_size);
1252 bloom_filter->generation = 0;
1254 g_kdbus_bloom_add_pair(worker, bloom_data, "message-type", message_type);
1257 g_kdbus_bloom_add_pair(worker, bloom_data, "interface", interface);
1260 g_kdbus_bloom_add_pair(worker, bloom_data, "member", member);
1264 g_kdbus_bloom_add_pair(worker, bloom_data, "path", path);
1265 g_kdbus_bloom_add_pair(worker, bloom_data, "path-slash-prefix", path);
1266 g_kdbus_bloom_add_prefixes(worker, bloom_data, "path-slash-prefix", path, '/');
1271 const GVariantType *body_type;
1272 const GVariantType *arg_type;
1275 body_type = g_variant_get_type (body);
1277 for (arg_type = g_variant_type_first (body_type), cnt = 0;
1279 arg_type = g_variant_type_next (arg_type), cnt++)
1281 gchar type_char = g_variant_type_peek_string (arg_type)[0];
1282 gchar buf[sizeof("arg")-1 + 2 + sizeof("-slash-prefix")];
1287 if (type_char != 's' && type_char != 'o')
1288 /* XXX: kdbus docs say "stop after first non-string" but I
1289 * think they're wrong (vs. dbus-1 compat)...
1293 child = g_variant_get_child_value (body, cnt);
1294 str = g_variant_get_string (child, NULL);
1296 e = stpcpy(buf, "arg");
1298 *(e++) = '0' + (char) cnt;
1301 *(e++) = '0' + (char) (cnt / 10);
1302 *(e++) = '0' + (char) (cnt % 10);
1305 /* We add this one for both strings and object paths */
1306 strcpy(e, "-slash-prefix");
1307 g_kdbus_bloom_add_prefixes(worker, bloom_data, buf, str, '/');
1309 /* But the others are only for strings */
1310 if (type_char == 's')
1312 strcpy(e, "-dot-prefix");
1313 g_kdbus_bloom_add_prefixes(worker, bloom_data, buf, str, '.');
1316 g_kdbus_bloom_add_pair(worker, bloom_data, buf, str);
1319 g_variant_unref (child);
1326 * TODO: g_kdbus_NameOwnerChanged_generate, g_kdbus_KernelMethodError_generate
1330 * g_kdbus_decode_kernel_msg:
1334 g_kdbus_decode_kernel_msg (GKDBusWorker *worker,
1335 struct kdbus_msg *msg)
1337 struct kdbus_item *item = NULL;
1339 KDBUS_ITEM_FOREACH(item, msg, items)
1343 case KDBUS_ITEM_ID_ADD:
1344 case KDBUS_ITEM_ID_REMOVE:
1345 case KDBUS_ITEM_NAME_ADD:
1346 case KDBUS_ITEM_NAME_REMOVE:
1347 case KDBUS_ITEM_NAME_CHANGE:
1348 //size = g_kdbus_NameOwnerChanged_generate (worker, item);
1349 g_error ("'NameOwnerChanged'");
1352 case KDBUS_ITEM_REPLY_TIMEOUT:
1353 case KDBUS_ITEM_REPLY_DEAD:
1354 //size = g_kdbus_KernelMethodError_generate (worker, item);
1355 g_error ("'KernelMethodError'");
1359 g_warning ("Unknown field in kernel message - %lld", item->type);
1364 /* Override information from the user header with data from the kernel */
1365 g_string_printf (worker->msg_sender, "org.freedesktop.DBus");
1367 /* for destination */
1368 if (worker->kmsg->dst_id == KDBUS_DST_ID_BROADCAST)
1369 /* for broadcast messages we don't have to set destination */
1371 else if (worker->kmsg->dst_id == KDBUS_DST_ID_NAME)
1372 g_string_printf (worker->msg_destination, ":1.%" G_GUINT64_FORMAT, (guint64) worker->unique_id);
1374 g_string_printf (worker->msg_destination, ":1.%" G_GUINT64_FORMAT, (guint64) worker->kmsg->dst_id);
1382 * g_kdbus_decode_dbus_msg:
1385 static GDBusMessage *
1386 g_kdbus_decode_dbus_msg (GKDBusWorker *worker,
1387 struct kdbus_msg *msg)
1389 GDBusMessage *message;
1390 struct kdbus_item *item;
1391 gssize data_size = 0;
1392 GArray *body_vectors;
1398 GVariantIter *fields_iter;
1399 guint8 endianness, type, flags, version;
1405 message = g_dbus_message_new ();
1407 body_vectors = g_array_new (FALSE, FALSE, sizeof (GVariantVector));
1409 tmp = g_strdup_printf (":1.%"G_GUINT64_FORMAT, (guint64) msg->src_id);
1410 g_dbus_message_set_sender (message, tmp);
1416 KDBUS_ITEM_FOREACH(item, msg, items)
1418 if (item->size <= KDBUS_ITEM_HEADER_SIZE)
1419 g_error("[KDBUS] %llu bytes - invalid data record\n", item->size);
1421 data_size = item->size - KDBUS_ITEM_HEADER_SIZE;
1425 /* KDBUS_ITEM_DST_NAME */
1426 case KDBUS_ITEM_DST_NAME:
1427 /* Classic D-Bus doesn't make this known to the receiver, so
1428 * we don't do it here either (for compatibility with the
1433 /* KDBUS_ITEM_PALOAD_OFF */
1434 case KDBUS_ITEM_PAYLOAD_OFF:
1436 GVariantVector vector;
1439 /* We want to make sure the bytes are aligned the same as
1440 * they would be if they appeared in a contiguously
1441 * allocated chunk of aligned memory.
1443 * We decide what the alignment 'should' be by consulting
1444 * body_size, which has been tracking the total size of the
1445 * message up to this point.
1447 * We then play around with the pointer by removing as many
1448 * bytes as required to get it to the proper alignment (and
1449 * copy extra bytes accordingly). This means that we will
1450 * grab some extra data in the 'bytes', but it won't be
1451 * shared with GVariant (which means there is no chance of
1452 * it being accidentally retransmitted).
1454 * The kernel does the same thing, so make sure we get the
1455 * expected result. Because of the kernel doing the same,
1456 * the result is that we will always be rounding-down to a
1457 * multiple of 8 for the pointer, which means that the
1458 * pointer will always be valid, assuming the original
1461 * We could fix this with a new GBytes constructor that took
1462 * 'flavour' as a parameter, but it's not worth it...
1464 flavour = body_size & 7;
1465 g_assert ((item->vec.offset & 7) == flavour);
1467 vector.gbytes = g_bytes_new (((guchar *) worker->kdbus_buffer) + item->vec.offset - flavour, item->vec.size + flavour);
1468 vector.data.pointer = g_bytes_get_data (vector.gbytes, NULL);
1469 vector.data.pointer += flavour;
1470 vector.size = item->vec.size;
1472 g_array_append_val (body_vectors, vector);
1473 body_size += vector.size;
1477 /* KDBUS_ITEM_PAYLOAD_MEMFD */
1478 case KDBUS_ITEM_PAYLOAD_MEMFD:
1480 GVariantVector vector;
1484 vector.gbytes = g_bytes_new_take_zero_copy_fd (item->memfd.fd);
1485 data = g_bytes_get_data (vector.gbytes, &size);
1487 g_assert (item->memfd.start + item->memfd.size <= size);
1489 vector.data.pointer = data + item->memfd.start;
1490 vector.size = item->memfd.size;
1492 g_array_append_val (body_vectors, vector);
1493 body_size += vector.size;
1497 /* KDBUS_ITEM_FDS */
1498 case KDBUS_ITEM_FDS:
1500 GUnixFDList *fd_list;
1502 fd_list = g_unix_fd_list_new_from_array (item->fds, data_size / sizeof (int));
1503 g_dbus_message_set_unix_fd_list (message, fd_list);
1504 g_object_unref (fd_list);
1508 /* All of the following items, like CMDLINE,
1509 CGROUP, etc. need some GDBUS API extensions and
1510 should be implemented in the future */
1511 case KDBUS_ITEM_TIMESTAMP:
1513 g_print ("time: seq %llu mon %llu real %llu\n",
1514 item->timestamp.seqnum, item->timestamp.monotonic_ns, item->timestamp.realtime_ns);
1515 //g_dbus_message_set_timestamp (message, item->timestamp.monotonic_ns / 1000);
1516 //g_dbus_message_set_serial (message, item->timestamp.seqnum);
1520 case KDBUS_ITEM_CREDS:
1522 g_print ("creds: u%u eu %u su%u fsu%u g%u eg%u sg%u fsg%u\n",
1523 item->creds.uid, item->creds.euid, item->creds.suid, item->creds.fsuid,
1524 item->creds.gid, item->creds.egid, item->creds.sgid, item->creds.fsgid);
1528 case KDBUS_ITEM_PIDS:
1529 case KDBUS_ITEM_PID_COMM:
1530 case KDBUS_ITEM_TID_COMM:
1531 case KDBUS_ITEM_EXE:
1532 case KDBUS_ITEM_CMDLINE:
1533 case KDBUS_ITEM_CGROUP:
1534 case KDBUS_ITEM_AUDIT:
1535 case KDBUS_ITEM_CAPS:
1536 case KDBUS_ITEM_SECLABEL:
1537 case KDBUS_ITEM_CONN_DESCRIPTION:
1538 case KDBUS_ITEM_AUXGROUPS:
1539 case KDBUS_ITEM_OWNED_NAME:
1540 case KDBUS_ITEM_NAME:
1541 g_print ("unhandled %04x\n", (int) item->type);
1545 g_error ("[KDBUS] DBUS_PAYLOAD: Unknown filed - %lld", item->type);
1550 body = GLIB_PRIVATE_CALL(g_variant_from_vectors) (G_VARIANT_TYPE ("((yyyyuta{tv})v)"),
1551 (GVariantVector *) body_vectors->data,
1552 body_vectors->len, body_size, FALSE);
1555 for (i = 0; i < body_vectors->len; i++)
1556 g_bytes_unref (g_array_index (body_vectors, GVariantVector, i).gbytes);
1558 g_array_free (body_vectors, TRUE);
1560 parts[0] = g_variant_get_child_value (body, 0);
1561 parts[1] = g_variant_get_child_value (body, 1);
1562 g_variant_unref (body);
1564 body = g_variant_get_variant (parts[1]);
1565 g_variant_unref (parts[1]);
1566 g_dbus_message_set_body (message, body);
1567 g_variant_unref (body);
1569 g_variant_get (parts[0], "(yyyyuta{tv})", &endianness, &type, &flags, &version, NULL, &serial, &fields_iter);
1570 g_variant_unref (parts[0]);
1572 while (g_variant_iter_loop (fields_iter, "{tv}", &key, &value))
1573 g_dbus_message_set_header (message, key, value);
1575 g_dbus_message_set_flags (message, flags);
1576 g_dbus_message_set_serial (message, serial);
1577 g_dbus_message_set_message_type (message, type);
1579 g_print ("Received:\n%s\n", g_dbus_message_print (message, 2));
1581 (* worker->message_received_callback) (message, worker->user_data);
1583 g_object_unref (message);
1594 _g_kdbus_receive (GKDBusWorker *kdbus,
1595 GCancellable *cancellable,
1598 struct kdbus_cmd_recv recv;
1599 struct kdbus_msg *msg;
1601 memset (&recv, 0, sizeof recv);
1602 recv.size = sizeof (recv);
1604 if (g_cancellable_set_error_if_cancelled (cancellable, error))
1608 if (ioctl(kdbus->fd, KDBUS_CMD_RECV, &recv) < 0)
1613 if (errno == EAGAIN)
1616 g_warning ("in holding pattern over %d %d\n", kdbus->fd, errno);
1620 g_set_error (error, G_IO_ERROR,
1621 g_io_error_from_errno (errno),
1622 _("Error while receiving message: %s"),
1623 g_strerror (errno));
1627 g_print ("but sometimes that's okay\n");
1629 msg = (struct kdbus_msg *)((guint8 *)kdbus->kdbus_buffer + recv.reply.offset);
1631 if (msg->payload_type == KDBUS_PAYLOAD_DBUS)
1632 g_kdbus_decode_dbus_msg (kdbus, msg);
1633 else if (msg->payload_type == KDBUS_PAYLOAD_KERNEL)
1634 g_kdbus_decode_kernel_msg (kdbus, msg);
1639 G_DBUS_ERROR_FAILED,
1640 _("Received unknown payload type"));
1644 ioctl(kdbus->fd, KDBUS_CMD_FREE, &recv.reply.offset);
1650 g_kdbus_msg_append_item (struct kdbus_msg *msg,
1655 struct kdbus_item *item;
1658 item_size = size + G_STRUCT_OFFSET(struct kdbus_item, data);
1660 if (msg->size + item_size > KDBUS_MSG_MAX_SIZE)
1664 msg->size += (-msg->size) & 7;
1665 item = (struct kdbus_item *) ((guchar *) msg + msg->size);
1667 item->size = item_size;
1668 memcpy (item->data, data, size);
1670 msg->size += item_size;
1676 g_kdbus_msg_append_payload_vec (struct kdbus_msg *msg,
1680 struct kdbus_vec vec = {
1682 .address = (gsize) data
1685 return g_kdbus_msg_append_item (msg, KDBUS_ITEM_PAYLOAD_VEC, &vec, sizeof vec);
1689 g_kdbus_msg_append_payload_memfd (struct kdbus_msg *msg,
1694 struct kdbus_memfd mfd = {
1700 return g_kdbus_msg_append_item (msg, KDBUS_ITEM_PAYLOAD_MEMFD, &mfd, sizeof mfd);
1704 #include "dbusheader.h"
1706 void dump_header (gconstpointer data, gsize size) ;
1708 dump_header (gconstpointer data,
1711 GDBusMessageHeaderFieldsIterator iter;
1712 GDBusMessageHeader header;
1714 header = g_dbus_message_header_new (data, size);
1715 g_print ("header e/%c t/%u f/x%x v/%u s/%"G_GUINT64_FORMAT"\n",
1716 g_dbus_message_header_get_endian (header),
1717 g_dbus_message_header_get_type (header),
1718 g_dbus_message_header_get_flags (header),
1719 g_dbus_message_header_get_version (header),
1720 g_dbus_message_header_get_serial (header));
1722 iter = g_dbus_message_header_iterate_fields (header);
1724 while (g_dbus_message_header_fields_iterator_next (&iter))
1726 const gchar *string;
1730 key = g_dbus_message_header_fields_iterator_get_key (iter);
1734 case G_DBUS_MESSAGE_HEADER_FIELD_PATH:
1735 if (g_dbus_message_header_fields_iterator_get_value_as_object_path (iter, &string))
1736 g_print (" path: %s\n", string);
1738 g_print (" path: <<invalid string>>\n");
1741 case G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE:
1742 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
1743 g_print (" interface: %s\n", string);
1745 g_print (" interface: <<invalid string>>\n");
1748 case G_DBUS_MESSAGE_HEADER_FIELD_MEMBER:
1749 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
1750 g_print (" member: %s\n", string);
1752 g_print (" member: <<invalid string>>\n");
1755 case G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME:
1756 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
1757 g_print (" error: %s\n", string);
1759 g_print (" error: <<invalid string>>\n");
1762 case G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL:
1763 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
1764 g_print (" serial: %s\n", string);
1766 g_print (" serial: <<invalid string>>\n");
1769 case G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION:
1770 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
1771 g_print (" destination: %s\n", string);
1773 g_print (" destination: <<invalid string>>\n");
1776 case G_DBUS_MESSAGE_HEADER_FIELD_SENDER:
1777 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
1778 g_print (" sender: %s\n", string);
1780 g_print (" sender: <<invalid string>>\n");
1784 g_print ("unknown field code %"G_GUINT64_FORMAT"\n", key);
1785 g_assert_not_reached ();
1796 * Returns: size of data sent or -1 when error
1799 _g_kdbus_send (GKDBusWorker *kdbus,
1800 GDBusMessage *message,
1803 struct kdbus_msg *msg = alloca (KDBUS_MSG_MAX_SIZE);
1804 GVariantVectors body_vectors;
1805 struct kdbus_cmd_send send;
1807 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), -1);
1809 /* fill in as we go... */
1810 memset (msg, 0, sizeof (struct kdbus_msg));
1811 msg->size = sizeof (struct kdbus_msg);
1812 msg->payload_type = KDBUS_PAYLOAD_DBUS;
1813 msg->src_id = kdbus->unique_id;
1814 msg->cookie = g_dbus_message_get_serial(message);
1816 /* Message destination */
1818 const gchar *dst_name;
1820 dst_name = g_dbus_message_get_destination (message);
1822 if (dst_name != NULL)
1824 if (g_dbus_is_unique_name (dst_name))
1826 if (dst_name[1] != '1' || dst_name[2] != '.')
1828 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_NAME_HAS_NO_OWNER,
1829 "Invalid unique D-Bus name '%s'", dst_name);
1833 /* We already know that it passes the checks for unique
1834 * names, so no need to perform error checking on strtoull.
1836 msg->dst_id = strtoull (dst_name + 3, NULL, 10);
1841 g_kdbus_msg_append_item (msg, KDBUS_ITEM_DST_NAME, dst_name, strlen (dst_name) + 1);
1842 msg->dst_id = KDBUS_DST_ID_NAME;
1846 msg->dst_id = KDBUS_DST_ID_BROADCAST;
1849 /* File descriptors */
1851 GUnixFDList *fd_list;
1853 fd_list = g_dbus_message_get_unix_fd_list (message);
1855 if (fd_list != NULL)
1860 fds = g_unix_fd_list_peek_fds (fd_list, &n_fds);
1863 g_kdbus_msg_append_item (msg, KDBUS_ITEM_FDS, fds, sizeof (gint) * n_fds);
1869 struct dbus_fixed_header fh;
1870 GHashTableIter header_iter;
1871 GVariantBuilder builder;
1872 gpointer key, value;
1876 fh.endian = (G_BYTE_ORDER == G_LITTLE_ENDIAN) ? 'l': 'B';
1877 fh.type = g_dbus_message_get_message_type (message);
1878 fh.flags = g_dbus_message_get_flags (message);
1881 fh.serial = g_dbus_message_get_serial (message);
1882 parts[0] = g_variant_new_from_data (DBUS_FIXED_HEADER_TYPE, &fh, sizeof fh, TRUE, NULL, NULL);
1884 g_dbus_message_init_header_iter (message, &header_iter);
1885 g_variant_builder_init (&builder, DBUS_EXTENDED_HEADER_TYPE);
1887 /* We set the sender field to the correct value for ourselves */
1888 g_variant_builder_add (&builder, "{tv}",
1889 (guint64) G_DBUS_MESSAGE_HEADER_FIELD_SENDER,
1890 g_variant_new_printf (":1.%"G_GUINT64_FORMAT, kdbus->unique_id));
1892 while (g_hash_table_iter_next (&header_iter, &key, &value))
1894 guint64 key_int = (gsize) key;
1898 /* These are the normal header fields that get passed
1901 case G_DBUS_MESSAGE_HEADER_FIELD_PATH:
1902 case G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE:
1903 case G_DBUS_MESSAGE_HEADER_FIELD_MEMBER:
1904 case G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME:
1905 case G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL:
1906 case G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION:
1907 g_variant_builder_add (&builder, "{tv}", key_int, value);
1908 /* This is a little bit gross.
1910 * We must send the header part of the message in a single
1911 * vector as per kdbus rules, but the GVariant serialiser
1912 * code will split any item >= 128 bytes into its own
1913 * vector to save the copy.
1915 * No header field should be that big anyway... right?
1917 g_assert_cmpint (g_variant_get_size (value), <, 128);
1920 /* We send this one unconditionally, but set it ourselves */
1921 case G_DBUS_MESSAGE_HEADER_FIELD_SENDER:
1924 /* We don't send these at all in GVariant format */
1925 case G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE:
1926 case G_DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS:
1930 g_assert_not_reached ();
1933 parts[1] = g_variant_builder_end (&builder);
1935 body = g_dbus_message_get_body (message);
1937 body = g_variant_new ("()");
1938 parts[2] = g_variant_new_variant (body);
1940 body = g_variant_ref_sink (g_variant_new_tuple (parts, G_N_ELEMENTS (parts)));
1941 GLIB_PRIVATE_CALL(g_variant_to_vectors) (body, &body_vectors);
1943 /* Sanity check to make sure the header is really contiguous:
1945 * - we must have at least one vector in the output
1946 * - the first vector must completely contain at least the header
1948 g_assert_cmpint (body_vectors.vectors->len, >, 0);
1949 g_assert_cmpint (g_array_index (body_vectors.vectors, GVariantVector, 0).size, >=,
1950 g_variant_get_size (parts[0]) + g_variant_get_size (parts[1]));
1952 g_variant_unref (body);
1958 for (i = 0; i < body_vectors.vectors->len; i++)
1960 GVariantVector vector = g_array_index (body_vectors.vectors, GVariantVector, i);
1966 fd = g_bytes_get_zero_copy_fd (vector.gbytes);
1970 const guchar *bytes_data;
1973 bytes_data = g_bytes_get_data (vector.gbytes, &bytes_size);
1975 if (bytes_data <= vector.data.pointer && vector.data.pointer + vector.size <= bytes_data + bytes_size)
1977 if (!g_kdbus_msg_append_payload_memfd (msg, fd, vector.data.pointer - bytes_data, vector.size))
1982 if (!g_kdbus_msg_append_payload_vec (msg, vector.data.pointer, vector.size))
1988 if (!g_kdbus_msg_append_payload_vec (msg, vector.data.pointer, vector.size))
1993 if (!g_kdbus_msg_append_payload_vec (msg, body_vectors.extra_bytes->data + vector.data.offset, vector.size))
2001 msg->flags = ((g_dbus_message_get_flags (message) & G_DBUS_MESSAGE_FLAGS_NO_REPLY_EXPECTED) ? 0 : KDBUS_MSG_EXPECT_REPLY) |
2002 ((g_dbus_message_get_flags (message) & G_DBUS_MESSAGE_FLAGS_NO_AUTO_START) ? KDBUS_MSG_NO_AUTO_START : 0);
2004 if ((msg->flags) & KDBUS_MSG_EXPECT_REPLY)
2005 msg->timeout_ns = 1000LU * g_get_monotonic_time() + KDBUS_TIMEOUT_NS;
2007 msg->cookie_reply = g_dbus_message_get_reply_serial(message);
2011 if (dst_id == KDBUS_DST_ID_BROADCAST)
2013 struct kdbus_bloom_filter *bloom_filter;
2015 bloom_filter = g_kdbus_append_bloom (&item, kdbus->bloom_size);
2016 g_kdbus_setup_bloom (kdbus, message, bloom_filter);
2020 send.size = sizeof (send);
2022 send.msg_address = (gsize) msg;
2028 if (ioctl(kdbus->fd, KDBUS_CMD_SEND, &send))
2031 GString *error_name;
2032 error_name = g_string_new (NULL);
2036 g_string_free (error_name,TRUE);
2039 else if (errno == ENXIO)
2041 g_string_printf (error_name, "Name %s does not exist", g_dbus_message_get_destination(dbus_msg));
2042 g_kdbus_generate_local_error (worker,
2044 g_variant_new ("(s)",error_name->str),
2045 G_DBUS_ERROR_SERVICE_UNKNOWN);
2046 g_string_free (error_name,TRUE);
2049 else if ((errno == ESRCH) || (errno == EADDRNOTAVAIL))
2051 if (kmsg->flags & KDBUS_MSG_FLAGS_NO_AUTO_START)
2053 g_string_printf (error_name, "Name %s does not exist", g_dbus_message_get_destination(dbus_msg));
2054 g_kdbus_generate_local_error (worker,
2056 g_variant_new ("(s)",error_name->str),
2057 G_DBUS_ERROR_SERVICE_UNKNOWN);
2058 g_string_free (error_name,TRUE);
2063 g_string_printf (error_name, "The name %s was not provided by any .service files", g_dbus_message_get_destination(dbus_msg));
2064 g_kdbus_generate_local_error (worker,
2066 g_variant_new ("(s)",error_name->str),
2067 G_DBUS_ERROR_SERVICE_UNKNOWN);
2068 g_string_free (error_name,TRUE);
2073 g_print ("[KDBUS] ioctl error sending kdbus message:%d (%m)\n",errno);
2074 g_set_error (error, G_IO_ERROR, g_io_error_from_errno(errno), _("Error sending message - KDBUS_CMD_MSG_SEND error"));
2076 perror("ioctl send");
2077 g_error ("IOCTL SEND: %d\n",errno);
2084 /* We end up here if:
2085 * - too many kdbus_items
2086 * - too large kdbus_msg size
2087 * - too much vector data
2089 * We need to compact the message before sending it.
2091 g_assert_not_reached ();
2095 g_kdbus_worker_new (const gchar *address,
2098 GKDBusWorker *worker;
2100 worker = g_object_new (G_TYPE_KDBUS_WORKER, NULL);
2101 if (!_g_kdbus_open (worker, address, error))
2103 g_object_unref (worker);
2111 g_kdbus_worker_associate (GKDBusWorker *worker,
2112 GDBusCapabilityFlags capabilities,
2113 GDBusWorkerMessageReceivedCallback message_received_callback,
2114 GDBusWorkerMessageAboutToBeSentCallback message_about_to_be_sent_callback,
2115 GDBusWorkerDisconnectedCallback disconnected_callback,
2118 worker->capabilities = capabilities;
2119 worker->message_received_callback = message_received_callback;
2120 worker->message_about_to_be_sent_callback = message_about_to_be_sent_callback;
2121 worker->disconnected_callback = disconnected_callback;
2122 worker->user_data = user_data;
2126 g_kdbus_worker_unfreeze (GKDBusWorker *worker)
2130 if (worker->source != NULL)
2133 worker->context = g_main_context_ref_thread_default ();
2134 worker->source = g_unix_fd_source_new (worker->fd, G_IO_IN);
2136 g_source_set_callback (worker->source, (GSourceFunc) kdbus_ready, worker, NULL);
2137 name = g_strdup_printf ("kdbus worker");
2138 g_source_set_name (worker->source, name);
2141 g_source_attach (worker->source, worker->context);
2145 g_kdbus_worker_send_message (GKDBusWorker *worker,
2146 GDBusMessage *message,
2149 return _g_kdbus_send (worker, message, error);
2153 g_kdbus_worker_stop (GKDBusWorker *worker)
2158 g_kdbus_worker_flush_sync (GKDBusWorker *worker)
2163 g_kdbus_worker_close (GKDBusWorker *worker,
2164 GCancellable *cancellable,
2165 GSimpleAsyncResult *result)