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))
68 #define KDBUS_FOREACH(iter, first, _size) \
69 for (iter = (first); \
70 ((guint8 *)(iter) < (guint8 *)(first) + (_size)) && \
71 ((guint8 *)(iter) >= (guint8 *)(first)); \
72 iter = (void*)(((guint8 *)iter) + KDBUS_ALIGN8((iter)->size)))
74 #define g_alloca0(x) memset(g_alloca(x), '\0', (x))
76 struct dbus_fixed_header {
85 #define DBUS_FIXED_HEADER_TYPE ((const GVariantType *) "(yyyyut)")
86 #define DBUS_EXTENDED_HEADER_TYPE ((const GVariantType *) "a{tv}")
87 #define DBUS_MESSAGE_TYPE ((const GVariantType *) "((yyyyut)a{tv}v)")
89 #define KDBUS_MSG_MAX_SIZE 8192
95 G_BUS_CREDS_UNIQUE_NAME = 3,
96 G_BUS_CREDS_SELINUX_CONTEXT = 4
97 } GBusCredentialsFlags;
99 typedef GObjectClass GKDBusWorkerClass;
103 GObject parent_instance;
107 GMainContext *context;
116 guint64 attach_flags_send;
117 guint64 attach_flags_recv;
129 GDBusCapabilityFlags capabilities;
130 GDBusWorkerMessageReceivedCallback message_received_callback;
131 GDBusWorkerMessageAboutToBeSentCallback message_about_to_be_sent_callback;
132 GDBusWorkerDisconnectedCallback disconnected_callback;
136 static gssize _g_kdbus_receive (GKDBusWorker *kdbus,
137 GCancellable *cancellable,
140 G_DEFINE_TYPE (GKDBusWorker, g_kdbus_worker, G_TYPE_OBJECT)
142 /* Hash keys for bloom filters*/
143 const guint8 hash_keys[8][16] =
145 {0xb9,0x66,0x0b,0xf0,0x46,0x70,0x47,0xc1,0x88,0x75,0xc4,0x9c,0x54,0xb9,0xbd,0x15},
146 {0xaa,0xa1,0x54,0xa2,0xe0,0x71,0x4b,0x39,0xbf,0xe1,0xdd,0x2e,0x9f,0xc5,0x4a,0x3b},
147 {0x63,0xfd,0xae,0xbe,0xcd,0x82,0x48,0x12,0xa1,0x6e,0x41,0x26,0xcb,0xfa,0xa0,0xc8},
148 {0x23,0xbe,0x45,0x29,0x32,0xd2,0x46,0x2d,0x82,0x03,0x52,0x28,0xfe,0x37,0x17,0xf5},
149 {0x56,0x3b,0xbf,0xee,0x5a,0x4f,0x43,0x39,0xaf,0xaa,0x94,0x08,0xdf,0xf0,0xfc,0x10},
150 {0x31,0x80,0xc8,0x73,0xc7,0xea,0x46,0xd3,0xaa,0x25,0x75,0x0f,0x9e,0x4c,0x09,0x29},
151 {0x7d,0xf7,0x18,0x4b,0x7b,0xa4,0x44,0xd5,0x85,0x3c,0x06,0xe0,0x65,0x53,0x96,0x6d},
152 {0xf2,0x77,0xe9,0x6f,0x93,0xb5,0x4e,0x71,0x9a,0x0c,0x34,0x88,0x39,0x25,0xbf,0x35}
157 MATCH_ELEMENT_SENDER,
158 MATCH_ELEMENT_INTERFACE,
159 MATCH_ELEMENT_MEMBER,
161 MATCH_ELEMENT_PATH_NAMESPACE,
162 MATCH_ELEMENT_DESTINATION,
163 MATCH_ELEMENT_ARG0NAMESPACE,
164 MATCH_ELEMENT_EAVESDROP,
166 MATCH_ELEMENT_ARGNPATH,
169 /* MatchElement struct */
179 MatchElement *elements;
188 is_key (const char *key_start, const char *key_end, char *value)
190 gsize len = strlen (value);
192 if (len != key_end - key_start)
195 return strncmp (key_start, value, len) == 0;
204 parse_key (MatchElement *element, const char *key_start, const char *key_end)
208 if (is_key (key_start, key_end, "type"))
210 element->type = MATCH_ELEMENT_TYPE;
212 else if (is_key (key_start, key_end, "sender"))
214 element->type = MATCH_ELEMENT_SENDER;
216 else if (is_key (key_start, key_end, "interface"))
218 element->type = MATCH_ELEMENT_INTERFACE;
220 else if (is_key (key_start, key_end, "member"))
222 element->type = MATCH_ELEMENT_MEMBER;
224 else if (is_key (key_start, key_end, "path"))
226 element->type = MATCH_ELEMENT_PATH;
228 else if (is_key (key_start, key_end, "path_namespace"))
230 element->type = MATCH_ELEMENT_PATH_NAMESPACE;
232 else if (is_key (key_start, key_end, "destination"))
234 element->type = MATCH_ELEMENT_DESTINATION;
236 else if (is_key (key_start, key_end, "arg0namespace"))
238 element->type = MATCH_ELEMENT_ARG0NAMESPACE;
240 else if (is_key (key_start, key_end, "eavesdrop"))
242 element->type = MATCH_ELEMENT_EAVESDROP;
244 else if (key_end - key_start > 3 && is_key (key_start, key_start + 3, "arg"))
246 const char *digits = key_start + 3;
247 const char *end_digits = digits;
249 while (end_digits < key_end && g_ascii_isdigit (*end_digits))
252 if (end_digits == key_end) /* argN */
254 element->type = MATCH_ELEMENT_ARGN;
255 element->arg = atoi (digits);
257 else if (is_key (end_digits, key_end, "path")) /* argNpath */
259 element->type = MATCH_ELEMENT_ARGNPATH;
260 element->arg = atoi (digits);
277 parse_value (MatchElement *element, const char *s)
282 value = g_string_new ("");
305 g_string_append_c (value, *s);
309 else if (quote_char == '\\')
311 /* \ only counts as an escape if escaping a quote mark */
313 g_string_append_c (value, '\\');
315 g_string_append_c (value, *s);
318 else /* quote_char == ' */
323 g_string_append_c (value, *s);
328 if (quote_char == '\\')
329 g_string_append_c (value, '\\');
330 else if (quote_char == '\'')
332 g_string_free (value, TRUE);
336 element->value = g_string_free (value, FALSE);
346 match_new (const char *str)
351 const char *key_start;
353 MatchElement element;
356 elements = g_array_new (TRUE, TRUE, sizeof (MatchElement));
362 memset (&element, 0, sizeof (element));
364 /* Skip initial whitespace */
365 while (*p && g_ascii_isspace (*p))
370 /* Read non-whitespace non-equals chars */
371 while (*p && *p != '=' && !g_ascii_isspace (*p))
376 /* Skip any whitespace after key */
377 while (*p && g_ascii_isspace (*p))
380 if (key_start == key_end)
381 continue; /* Allow trailing whitespace */
387 if (!parse_key (&element, key_start, key_end))
390 p = parse_value (&element, p);
394 g_array_append_val (elements, element);
397 match = g_new0 (Match, 1);
398 match->n_elements = elements->len;
399 match->elements = (MatchElement *)g_array_free (elements, FALSE);
404 for (i = 0; i < elements->len; i++)
405 g_free (g_array_index (elements, MatchElement, i).value);
406 g_array_free (elements, TRUE);
416 match_free (Match *match)
419 for (i = 0; i < match->n_elements; i++)
420 g_free (match->elements[i].value);
421 g_free (match->elements);
431 g_kdbus_worker_finalize (GObject *object)
433 GKDBusWorker *kdbus = G_KDBUS_WORKER (object);
435 if (kdbus->kdbus_buffer != NULL)
436 munmap (kdbus->kdbus_buffer, KDBUS_POOL_SIZE);
438 kdbus->kdbus_buffer = NULL;
440 if (kdbus->fd != -1 && !kdbus->closed)
441 _g_kdbus_close (kdbus);
443 G_OBJECT_CLASS (g_kdbus_worker_parent_class)->finalize (object);
447 g_kdbus_worker_class_init (GKDBusWorkerClass *class)
449 class->finalize = g_kdbus_worker_finalize;
453 g_kdbus_worker_init (GKDBusWorker *kdbus)
457 kdbus->unique_id = -1;
458 kdbus->unique_name = NULL;
460 kdbus->kdbus_buffer = NULL;
462 kdbus->flags = 0; /* KDBUS_HELLO_ACCEPT_FD */
463 kdbus->attach_flags_send = _KDBUS_ATTACH_ALL;
464 kdbus->attach_flags_recv = _KDBUS_ATTACH_ALL;
468 kdbus_ready (gint fd,
469 GIOCondition condition,
472 GKDBusWorker *kdbus = user_data;
473 GError *error = NULL;
475 _g_kdbus_receive (kdbus, NULL, &error);
476 g_assert_no_error (error);
478 return G_SOURCE_CONTINUE;
482 _g_kdbus_open (GKDBusWorker *worker,
483 const gchar *address,
486 g_return_val_if_fail (G_IS_KDBUS_WORKER (worker), FALSE);
488 worker->fd = open(address, O_RDWR|O_NOCTTY|O_CLOEXEC);
491 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED, _("Can't open kdbus endpoint"));
495 worker->closed = FALSE;
506 g_kdbus_free_data (GKDBusWorker *kdbus,
509 struct kdbus_cmd_free cmd = {
516 ret = ioctl (kdbus->fd, KDBUS_CMD_FREE, &cmd);
525 * g_kdbus_translate_nameowner_flags:
529 g_kdbus_translate_nameowner_flags (GBusNameOwnerFlags flags,
530 guint64 *kdbus_flags)
536 if (flags & G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT)
537 new_flags |= KDBUS_NAME_ALLOW_REPLACEMENT;
539 if (flags & G_BUS_NAME_OWNER_FLAGS_REPLACE)
540 new_flags |= KDBUS_NAME_REPLACE_EXISTING;
542 if (!(flags & G_BUS_NAME_OWNER_FLAGS_DO_NOT_QUEUE))
543 new_flags |= KDBUS_NAME_QUEUE;
545 *kdbus_flags = new_flags;
554 _g_kdbus_close (GKDBusWorker *kdbus)
556 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), FALSE);
561 g_source_destroy (kdbus->source);
564 g_main_context_unref (kdbus->context);
565 kdbus->context = NULL;
570 kdbus->closed = TRUE;
574 * _g_kdbus_is_closed:
578 _g_kdbus_is_closed (GKDBusWorker *kdbus)
580 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), FALSE);
582 return kdbus->closed;
591 _g_kdbus_Hello (GKDBusWorker *worker,
594 struct kdbus_cmd_hello *cmd;
595 struct kdbus_item *item;
598 size_t size, conn_name_size;
600 conn_name = "gdbus-kdbus";
601 conn_name_size = strlen (conn_name);
603 size = KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_cmd_hello, items)) +
604 KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, str) + conn_name_size + 1);
606 cmd = g_alloca0 (size);
607 cmd->flags = worker->flags;
608 cmd->attach_flags_send = worker->attach_flags_send;
609 cmd->attach_flags_recv = worker->attach_flags_recv;
611 cmd->pool_size = KDBUS_POOL_SIZE;
614 item->size = G_STRUCT_OFFSET (struct kdbus_item, str) + conn_name_size + 1;
615 item->type = KDBUS_ITEM_CONN_DESCRIPTION;
616 memcpy (item->str, conn_name, conn_name_size+1);
617 item = KDBUS_ITEM_NEXT (item);
619 if (ioctl(worker->fd, KDBUS_CMD_HELLO, cmd))
621 g_set_error (error, G_IO_ERROR,
622 g_io_error_from_errno (errno),
623 _("Failed to send HELLO: %s"),
628 worker->kdbus_buffer = mmap(NULL, KDBUS_POOL_SIZE, PROT_READ, MAP_SHARED, worker->fd, 0);
629 if (worker->kdbus_buffer == MAP_FAILED)
631 g_set_error (error, G_IO_ERROR,
632 g_io_error_from_errno (errno),
638 if (cmd->bus_flags > 0xFFFFFFFFULL)
640 g_set_error_literal (error,
643 _("Incompatible HELLO flags"));
647 memcpy (worker->bus_id, cmd->id128, 16);
649 worker->unique_id = cmd->id;
650 asprintf(&worker->unique_name, ":1.%llu", (unsigned long long) cmd->id);
652 /* read bloom filters parameters */
653 //worker->bloom_size = (gsize) cmd->bloom.size;
654 //worker->bloom_n_hash = (guint) cmd->bloom.n_hash;
656 return g_variant_new ("(s)", worker->unique_name);
661 * _g_kdbus_RequestName:
665 _g_kdbus_RequestName (GKDBusWorker *worker,
667 GBusNameOwnerFlags flags,
671 struct kdbus_cmd *cmd;
676 status = G_BUS_REQUEST_NAME_FLAGS_PRIMARY_OWNER;
678 if (!g_dbus_is_name (name))
682 G_DBUS_ERROR_INVALID_ARGS,
683 "Given bus name \"%s\" is not valid", name);
691 G_DBUS_ERROR_INVALID_ARGS,
692 "Cannot acquire a service starting with ':' such as \"%s\"", name);
696 g_kdbus_translate_nameowner_flags (flags, &kdbus_flags);
698 len = strlen(name) + 1;
699 size = G_STRUCT_OFFSET (struct kdbus_cmd, items) + KDBUS_ITEM_SIZE(len);
700 cmd = g_alloca0 (size);
702 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
703 cmd->items[0].type = KDBUS_ITEM_NAME;
704 cmd->flags = kdbus_flags;
705 memcpy (cmd->items[0].str, name, len);
707 ret = ioctl(worker->fd, KDBUS_CMD_NAME_ACQUIRE, cmd);
711 status = G_BUS_REQUEST_NAME_FLAGS_EXISTS;
712 else if (errno == EALREADY)
713 status = G_BUS_REQUEST_NAME_FLAGS_ALREADY_OWNER;
716 g_set_error (error, G_IO_ERROR,
717 g_io_error_from_errno (errno),
718 _("Error while acquiring name: %s"),
724 if (cmd->flags & KDBUS_NAME_IN_QUEUE)
725 status = G_BUS_REQUEST_NAME_FLAGS_IN_QUEUE;
727 result = g_variant_new ("(u)", status);
734 * _g_kdbus_ReleaseName:
738 _g_kdbus_ReleaseName (GKDBusWorker *worker,
743 struct kdbus_cmd *cmd;
747 status = G_BUS_RELEASE_NAME_FLAGS_RELEASED;
749 if (!g_dbus_is_name (name))
753 G_DBUS_ERROR_INVALID_ARGS,
754 "Given bus name \"%s\" is not valid", name);
762 G_DBUS_ERROR_INVALID_ARGS,
763 "Cannot release a service starting with ':' such as \"%s\"", name);
767 len = strlen(name) + 1;
768 size = G_STRUCT_OFFSET (struct kdbus_cmd, items) + KDBUS_ITEM_SIZE(len);
769 cmd = g_alloca0 (size);
771 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
772 cmd->items[0].type = KDBUS_ITEM_NAME;
773 memcpy (cmd->items[0].str, name, len);
775 ret = ioctl(worker->fd, KDBUS_CMD_NAME_RELEASE, cmd);
779 status = G_BUS_RELEASE_NAME_FLAGS_NON_EXISTENT;
780 else if (errno == EADDRINUSE)
781 status = G_BUS_RELEASE_NAME_FLAGS_NOT_OWNER;
784 g_set_error (error, G_IO_ERROR,
785 g_io_error_from_errno (errno),
786 _("Error while releasing name: %s"),
792 result = g_variant_new ("(u)", status);
803 _g_kdbus_GetBusId (GKDBusWorker *worker,
810 result_str = g_string_new (NULL);
812 for (cnt=0; cnt<16; cnt++)
813 g_string_append_printf (result_str, "%02x", worker->bus_id[cnt]);
815 result = g_variant_new ("(s)", result_str->str);
816 g_string_free (result_str, TRUE);
823 * _g_kdbus_GetListNames:
827 _g_kdbus_GetListNames (GKDBusWorker *worker,
828 guint list_name_type,
832 GVariantBuilder *builder;
833 struct kdbus_info *name_list, *name;
834 struct kdbus_cmd_list cmd = {
844 cmd.flags = KDBUS_LIST_ACTIVATORS; /* ListActivatableNames */
846 cmd.flags = KDBUS_LIST_UNIQUE | KDBUS_LIST_NAMES; /* ListNames */
848 ret = ioctl(worker->fd, KDBUS_CMD_LIST, &cmd);
854 _("Error listing names"));
858 name_list = (struct kdbus_info *) ((guint8 *) worker->kdbus_buffer + cmd.offset);
859 builder = g_variant_builder_new (G_VARIANT_TYPE ("as"));
861 KDBUS_FOREACH(name, name_list, cmd.list_size)
863 struct kdbus_item *item;
864 const gchar *item_name = "";
866 if ((cmd.flags & KDBUS_LIST_UNIQUE) && name->id != prev_id)
868 GString *unique_name;
870 unique_name = g_string_new (NULL);
871 g_string_printf (unique_name, ":1.%llu", name->id);
872 g_variant_builder_add (builder, "s", unique_name->str);
873 g_string_free (unique_name,TRUE);
877 KDBUS_ITEM_FOREACH(item, name, items)
878 if (item->type == KDBUS_ITEM_OWNED_NAME)
879 item_name = item->name.name;
881 if (g_dbus_is_name (item_name))
882 g_variant_builder_add (builder, "s", item_name);
885 result = g_variant_new ("(as)", builder);
886 g_variant_builder_unref (builder);
888 g_kdbus_free_data (worker, cmd.offset);
894 * _g_kdbus_NameHasOwner_internal:
898 g_kdbus_NameHasOwner_internal (GKDBusWorker *worker,
902 struct kdbus_cmd_info *cmd;
906 if (g_dbus_is_unique_name(name))
908 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items);
909 cmd = g_alloca0 (size);
910 cmd->id = g_ascii_strtoull (name+3, NULL, 10);
914 len = strlen(name) + 1;
915 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items) + KDBUS_ITEM_SIZE(len);
916 cmd = g_alloca0 (size);
917 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
918 cmd->items[0].type = KDBUS_ITEM_NAME;
919 memcpy (cmd->items[0].str, name, len);
923 ret = ioctl(worker->fd, KDBUS_CMD_CONN_INFO, cmd);
924 g_kdbus_free_data (worker, cmd->offset);
934 * _g_kdbus_GetListQueuedOwners:
938 _g_kdbus_GetListQueuedOwners (GKDBusWorker *worker,
943 GVariantBuilder *builder;
944 GString *unique_name;
947 struct kdbus_info *name_list, *kname;
948 struct kdbus_cmd_list cmd = {
950 .flags = KDBUS_LIST_QUEUED
953 if (!g_dbus_is_name (name))
957 G_DBUS_ERROR_INVALID_ARGS,
958 "Given bus name \"%s\" is not valid", name);
962 if (!g_kdbus_NameHasOwner_internal (worker, name, error))
966 G_DBUS_ERROR_NAME_HAS_NO_OWNER,
967 "Could not get owner of name '%s': no such name", name);
971 ret = ioctl(worker->fd, KDBUS_CMD_LIST, &cmd);
977 _("Error listing names"));
981 name_list = (struct kdbus_info *) ((guint8 *) worker->kdbus_buffer + cmd.offset);
983 unique_name = g_string_new (NULL);
984 builder = g_variant_builder_new (G_VARIANT_TYPE ("as"));
985 KDBUS_FOREACH(kname, name_list, cmd.list_size)
987 struct kdbus_item *item;
988 const char *item_name = "";
990 KDBUS_ITEM_FOREACH(item, kname, items)
991 if (item->type == KDBUS_ITEM_NAME)
992 item_name = item->str;
994 if (strcmp(item_name, name))
997 g_string_printf (unique_name, ":1.%llu", kname->id);
998 g_variant_builder_add (builder, "s", item_name);
1001 result = g_variant_new ("(as)", builder);
1002 g_variant_builder_unref (builder);
1003 g_string_free (unique_name,TRUE);
1005 g_kdbus_free_data (worker, cmd.offset);
1011 * g_kdbus_GetConnInfo_internal:
1015 g_kdbus_GetConnInfo_internal (GKDBusWorker *worker,
1022 struct kdbus_cmd_info *cmd;
1023 struct kdbus_info *conn_info;
1024 struct kdbus_item *item;
1030 if (!g_dbus_is_name (name))
1034 G_DBUS_ERROR_INVALID_ARGS,
1035 "Given bus name \"%s\" is not valid", name);
1039 if (!g_kdbus_NameHasOwner_internal (worker, name, error))
1043 G_DBUS_ERROR_NAME_HAS_NO_OWNER,
1044 "Could not get owner of name '%s': no such name", name);
1048 if (g_dbus_is_unique_name(name))
1050 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items);
1051 cmd = g_alloca0 (size);
1052 cmd->id = g_ascii_strtoull (name+3, NULL, 10);
1056 len = strlen(name) + 1;
1057 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items) + KDBUS_ITEM_SIZE(len);
1058 cmd = g_alloca0 (size);
1059 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
1060 cmd->items[0].type = KDBUS_ITEM_NAME;
1061 memcpy (cmd->items[0].str, name, len);
1064 cmd->flags = _KDBUS_ATTACH_ALL;
1067 ret = ioctl(worker->fd, KDBUS_CMD_CONN_INFO, cmd);
1072 G_DBUS_ERROR_FAILED,
1073 _("Could not get connection info"));
1077 conn_info = (struct kdbus_info *) ((guint8 *) worker->kdbus_buffer + cmd->offset);
1080 if (conn_info->flags & KDBUS_HELLO_ACTIVATOR)
1084 if (flag == G_BUS_CREDS_UNIQUE_NAME)
1086 GString *unique_name;
1088 unique_name = g_string_new (NULL);
1089 g_string_printf (unique_name, ":1.%llu", (unsigned long long) conn_info->id);
1090 result = g_variant_new ("(s)", unique_name->str);
1091 g_string_free (unique_name,TRUE);
1095 KDBUS_ITEM_FOREACH(item, conn_info, items)
1099 case KDBUS_ITEM_PIDS:
1101 if (flag == G_BUS_CREDS_PID)
1103 guint pid = item->pids.pid;
1104 result = g_variant_new ("(u)", pid);
1108 case KDBUS_ITEM_CREDS:
1110 if (flag == G_BUS_CREDS_UID)
1112 guint uid = item->creds.uid;
1113 result = g_variant_new ("(u)", uid);
1117 case KDBUS_ITEM_SECLABEL:
1118 case KDBUS_ITEM_PID_COMM:
1119 case KDBUS_ITEM_TID_COMM:
1120 case KDBUS_ITEM_EXE:
1121 case KDBUS_ITEM_CMDLINE:
1122 case KDBUS_ITEM_CGROUP:
1123 case KDBUS_ITEM_CAPS:
1124 case KDBUS_ITEM_AUDIT:
1125 case KDBUS_ITEM_CONN_DESCRIPTION:
1126 case KDBUS_ITEM_AUXGROUPS:
1127 case KDBUS_ITEM_OWNED_NAME:
1133 g_kdbus_free_data (worker, cmd->offset);
1139 * _g_kdbus_GetNameOwner:
1143 _g_kdbus_GetNameOwner (GKDBusWorker *worker,
1147 return g_kdbus_GetConnInfo_internal (worker,
1149 G_BUS_CREDS_UNIQUE_NAME,
1155 * _g_kdbus_GetConnectionUnixProcessID:
1159 _g_kdbus_GetConnectionUnixProcessID (GKDBusWorker *worker,
1163 return g_kdbus_GetConnInfo_internal (worker,
1171 * _g_kdbus_GetConnectionUnixUser:
1175 _g_kdbus_GetConnectionUnixUser (GKDBusWorker *worker,
1179 return g_kdbus_GetConnInfo_internal (worker,
1187 * g_kdbus_bloom_add_data:
1188 * Based on bus-bloom.c from systemd
1189 * http://cgit.freedesktop.org/systemd/systemd/tree/src/libsystemd/sd-bus/bus-bloom.c
1192 g_kdbus_bloom_add_data (GKDBusWorker *worker,
1193 guint64 bloom_data [],
1199 guint bytes_num = 0;
1205 bit_num = worker->bloom_size * 8;
1208 bytes_num = ((__builtin_clzll(bit_num) ^ 63U) + 7) / 8;
1210 for (cnt_1 = 0; cnt_1 < (worker->bloom_n_hash); cnt_1++)
1212 for (cnt_2 = 0; cnt_2 < bytes_num; cnt_2++)
1216 g_siphash24(hash, data, n, hash_keys[cnt_1++]);
1220 p = (p << 8ULL) | (guint64) hash[8 - c];
1225 bloom_data[p >> 6] |= 1ULL << (p & 63);
1231 * g_kdbus_bloom_add_pair:
1235 g_kdbus_bloom_add_pair (GKDBusWorker *worker,
1236 guint64 bloom_data [],
1237 const gchar *parameter,
1243 size = strlen(parameter) + strlen(value) + 1;
1247 strcpy(stpcpy(stpcpy(buf, parameter), ":"), value);
1248 g_kdbus_bloom_add_data(worker, bloom_data, buf, size);
1253 * g_kdbus_bloom_add_prefixes:
1257 g_kdbus_bloom_add_prefixes (GKDBusWorker *worker,
1258 guint64 bloom_data [],
1259 const gchar *parameter,
1266 size = strlen(parameter) + strlen(value) + 1;
1270 strcpy(stpcpy(stpcpy(buf, parameter), ":"), value);
1275 last_sep = strrchr(buf, separator);
1276 if (!last_sep || last_sep == buf)
1280 g_kdbus_bloom_add_data(worker, bloom_data, buf, last_sep-buf);
1286 * _g_kdbus_AddMatch:
1290 _g_kdbus_AddMatch (GKDBusWorker *worker,
1291 const gchar *match_rule,
1295 MatchElement *element;
1296 const gchar *sender_name;
1297 gsize sender_len, size;
1298 struct kdbus_cmd_match *cmd;
1299 struct kdbus_item *item;
1305 if (match_rule[0] == '-')
1308 match = match_new (match_rule);
1316 src_id = KDBUS_MATCH_ID_ANY;
1318 bloom = g_alloca0 (worker->bloom_size);
1319 size = KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_cmd_match, items));
1320 match = match_new (match_rule);
1322 for (cnt = 0; cnt < match->n_elements; cnt++)
1324 element = &match->elements[cnt];
1325 switch (element->type)
1327 case MATCH_ELEMENT_SENDER:
1328 if (g_dbus_is_unique_name(element->value))
1330 src_id = g_ascii_strtoull ((element->value)+3, NULL, 10);
1331 size += KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, id) + sizeof(src_id));
1333 else if (g_dbus_is_name (element->value))
1335 sender_name = element->value;
1336 sender_len = strlen(element->value) + 1;
1337 size += KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, str) + sender_len);
1341 g_critical ("Error while adding a match: %d", cookie);
1347 case MATCH_ELEMENT_TYPE:
1348 g_kdbus_bloom_add_pair (worker, bloom, "message-type", element->value);
1351 case MATCH_ELEMENT_INTERFACE:
1352 g_kdbus_bloom_add_pair (worker, bloom, "interface", element->value);
1355 case MATCH_ELEMENT_MEMBER:
1356 g_kdbus_bloom_add_pair (worker, bloom, "member", element->value);
1359 case MATCH_ELEMENT_PATH:
1360 g_kdbus_bloom_add_pair (worker, bloom, "path", element->value);
1363 case MATCH_ELEMENT_PATH_NAMESPACE:
1364 if (g_strcmp0 (element->value, "/"))
1365 g_kdbus_bloom_add_pair (worker, bloom, "path-slash-prefix", element->value);
1368 case MATCH_ELEMENT_ARGN:
1369 asprintf (&type, "arg%u", element->arg);
1370 g_kdbus_bloom_add_pair (worker, bloom, type, element->value);
1374 case MATCH_ELEMENT_ARGNPATH:
1375 asprintf (&type, "arg%u-slash-prefix", element->arg);
1376 g_kdbus_bloom_add_pair (worker, bloom, type, element->value);
1380 case MATCH_ELEMENT_ARG0NAMESPACE:
1381 g_kdbus_bloom_add_pair (worker, bloom, "arg0-dot-prefix", element->value);
1384 case MATCH_ELEMENT_DESTINATION:
1385 case MATCH_ELEMENT_EAVESDROP:
1390 size += KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, data64) + worker->bloom_size);
1391 cmd = g_alloca0 (size);
1393 cmd->cookie = cookie;
1396 item->size = G_STRUCT_OFFSET(struct kdbus_item, data64) + worker->bloom_size;
1397 item->type = KDBUS_ITEM_BLOOM_MASK;
1398 memcpy(item->data64, bloom, worker->bloom_size);
1399 item = KDBUS_ITEM_NEXT(item);
1401 if (src_id != KDBUS_MATCH_ID_ANY)
1403 item->size = G_STRUCT_OFFSET (struct kdbus_item, id) + sizeof(src_id);
1404 item->type = KDBUS_ITEM_ID;
1406 item = KDBUS_ITEM_NEXT(item);
1411 item->size = G_STRUCT_OFFSET (struct kdbus_item, str) + sender_len;
1412 item->type = KDBUS_ITEM_NAME;
1413 memcpy (item->str, sender_name, sender_len);
1416 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd);
1418 g_critical ("Error while adding a match: %d", cookie);
1425 * _g_kdbus_RemoveMatch:
1429 _g_kdbus_RemoveMatch (GKDBusWorker *worker,
1432 struct kdbus_cmd_match cmd = {
1433 .size = sizeof(cmd),
1438 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_REMOVE, &cmd);
1440 g_warning ("Error while removing a match: %d\n", (int) errno);
1445 * _g_kdbus_subscribe_name_acquired:
1449 _g_kdbus_subscribe_name_owner_changed (GKDBusWorker *worker,
1451 const gchar *old_name,
1452 const gchar *new_name,
1455 struct kdbus_item *item;
1456 struct kdbus_cmd_match *cmd;
1459 guint64 old_id = 0; /* XXX why? */
1460 guint64 new_id = KDBUS_MATCH_ID_ANY;
1462 len = strlen(name) + 1;
1463 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1464 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1465 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1467 cmd = g_alloca0 (size);
1469 cmd->cookie = cookie;
1472 if (old_name[0] == 0)
1474 old_id = KDBUS_MATCH_ID_ANY;
1478 if (g_dbus_is_unique_name(old_name))
1484 if (new_name[0] == 0)
1486 new_id = KDBUS_MATCH_ID_ANY;
1490 if (g_dbus_is_unique_name(new_name))
1496 cmd = g_alloca0 (size);
1498 cmd->cookie = cookie;
1501 /* KDBUS_ITEM_NAME_CHANGE */
1502 item->type = KDBUS_ITEM_NAME_CHANGE;
1503 item->name_change.old_id.id = old_id;
1504 item->name_change.new_id.id = new_id;
1505 memcpy(item->name_change.name, name, len);
1506 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1507 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1508 item = KDBUS_ITEM_NEXT(item);
1510 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd);
1512 g_warning ("ERROR - %d\n", (int) errno);
1517 * _g_kdbus_subscribe_name_acquired:
1521 _g_kdbus_subscribe_name_acquired (GKDBusWorker *worker,
1524 struct kdbus_item *item;
1525 struct kdbus_cmd_match *cmd;
1530 len = strlen(name) + 1;
1531 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1532 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1533 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1535 cookie = 0xbeefbeefbeefbeef;
1536 cmd = g_alloca0 (size);
1538 cmd->cookie = cookie;
1541 /* KDBUS_ITEM_NAME_ADD */
1542 item->type = KDBUS_ITEM_NAME_ADD;
1543 item->name_change.old_id.id = KDBUS_MATCH_ID_ANY;
1544 item->name_change.new_id.id = worker->unique_id;
1545 memcpy(item->name_change.name, name, len);
1546 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1547 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1548 item = KDBUS_ITEM_NEXT(item);
1550 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd);
1552 g_warning ("ERROR - %d\n", (int) errno);
1554 _g_kdbus_subscribe_name_owner_changed (worker, name, "", worker->unique_name, cookie);
1559 * _g_kdbus_subscribe_name_lost:
1563 _g_kdbus_subscribe_name_lost (GKDBusWorker *worker,
1566 struct kdbus_item *item;
1567 struct kdbus_cmd_match *cmd;
1572 len = strlen(name) + 1;
1573 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1574 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1575 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1577 cookie = 0xdeafdeafdeafdeaf;
1578 cmd = g_alloca0 (size);
1580 cmd->cookie = cookie;
1583 /* KDBUS_ITEM_NAME_REMOVE */
1584 item->type = KDBUS_ITEM_NAME_REMOVE;
1585 item->name_change.old_id.id = worker->unique_id;
1586 item->name_change.new_id.id = KDBUS_MATCH_ID_ANY;
1587 memcpy(item->name_change.name, name, len);
1588 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1589 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1590 item = KDBUS_ITEM_NEXT(item);
1592 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd);
1594 g_warning ("ERROR - %d\n", (int) errno);
1596 _g_kdbus_subscribe_name_owner_changed (worker, name, worker->unique_name, "", cookie);
1601 * _g_kdbus_unsubscribe_name_acquired:
1605 _g_kdbus_unsubscribe_name_acquired (GKDBusWorker *worker)
1609 cookie = 0xbeefbeefbeefbeef;
1610 _g_kdbus_RemoveMatch (worker, cookie);
1615 * _g_kdbus_unsubscribe_name_lost:
1619 _g_kdbus_unsubscribe_name_lost (GKDBusWorker *worker)
1623 cookie = 0xdeafdeafdeafdeaf;
1624 _g_kdbus_RemoveMatch (worker, cookie);
1629 * g_kdbus_append_payload_bloom:
1632 static struct kdbus_bloom_filter *
1633 g_kdbus_append_bloom (struct kdbus_item **item,
1636 struct kdbus_item *bloom_item;
1638 bloom_item = KDBUS_ALIGN8_PTR(*item);
1639 bloom_item->size = G_STRUCT_OFFSET (struct kdbus_item, bloom_filter) +
1640 G_STRUCT_OFFSET (struct kdbus_bloom_filter, data) +
1643 bloom_item->type = KDBUS_ITEM_BLOOM_FILTER;
1645 *item = KDBUS_ITEM_NEXT(bloom_item);
1646 return &bloom_item->bloom_filter;
1651 * g_kdbus_setup_bloom:
1652 * Based on bus-bloom.c from systemd
1653 * http://cgit.freedesktop.org/systemd/systemd/tree/src/libsystemd/sd-bus/bus-bloom.c
1656 g_kdbus_setup_bloom (GKDBusWorker *worker,
1657 GDBusMessage *dbus_msg,
1658 struct kdbus_bloom_filter *bloom_filter)
1662 const gchar *message_type;
1663 const gchar *interface;
1664 const gchar *member;
1669 body = g_dbus_message_get_body (dbus_msg);
1670 message_type = _g_dbus_enum_to_string (G_TYPE_DBUS_MESSAGE_TYPE, g_dbus_message_get_message_type (dbus_msg));
1671 interface = g_dbus_message_get_interface (dbus_msg);
1672 member = g_dbus_message_get_member (dbus_msg);
1673 path = g_dbus_message_get_path (dbus_msg);
1675 bloom_data = bloom_filter->data;
1676 memset (bloom_data, 0, worker->bloom_size);
1677 bloom_filter->generation = 0;
1679 g_kdbus_bloom_add_pair(worker, bloom_data, "message-type", message_type);
1682 g_kdbus_bloom_add_pair(worker, bloom_data, "interface", interface);
1685 g_kdbus_bloom_add_pair(worker, bloom_data, "member", member);
1689 g_kdbus_bloom_add_pair(worker, bloom_data, "path", path);
1690 g_kdbus_bloom_add_pair(worker, bloom_data, "path-slash-prefix", path);
1691 g_kdbus_bloom_add_prefixes(worker, bloom_data, "path-slash-prefix", path, '/');
1696 const GVariantType *body_type;
1697 const GVariantType *arg_type;
1700 body_type = g_variant_get_type (body);
1702 for (arg_type = g_variant_type_first (body_type), cnt = 0;
1704 arg_type = g_variant_type_next (arg_type), cnt++)
1706 gchar type_char = g_variant_type_peek_string (arg_type)[0];
1707 gchar buf[sizeof("arg")-1 + 2 + sizeof("-slash-prefix")];
1712 if (type_char != 's' && type_char != 'o')
1713 /* XXX: kdbus docs say "stop after first non-string" but I
1714 * think they're wrong (vs. dbus-1 compat)...
1718 child = g_variant_get_child_value (body, cnt);
1719 str = g_variant_get_string (child, NULL);
1721 e = stpcpy(buf, "arg");
1723 *(e++) = '0' + (char) cnt;
1726 *(e++) = '0' + (char) (cnt / 10);
1727 *(e++) = '0' + (char) (cnt % 10);
1730 /* We add this one for both strings and object paths */
1731 strcpy(e, "-slash-prefix");
1732 g_kdbus_bloom_add_prefixes(worker, bloom_data, buf, str, '/');
1734 /* But the others are only for strings */
1735 if (type_char == 's')
1737 strcpy(e, "-dot-prefix");
1738 g_kdbus_bloom_add_prefixes(worker, bloom_data, buf, str, '.');
1741 g_kdbus_bloom_add_pair(worker, bloom_data, buf, str);
1744 g_variant_unref (child);
1751 * TODO: g_kdbus_NameOwnerChanged_generate, g_kdbus_KernelMethodError_generate
1755 * g_kdbus_decode_kernel_msg:
1759 g_kdbus_decode_kernel_msg (GKDBusWorker *worker,
1760 struct kdbus_msg *msg)
1762 struct kdbus_item *item = NULL;
1764 KDBUS_ITEM_FOREACH(item, msg, items)
1768 case KDBUS_ITEM_ID_ADD:
1769 case KDBUS_ITEM_ID_REMOVE:
1770 case KDBUS_ITEM_NAME_ADD:
1771 case KDBUS_ITEM_NAME_REMOVE:
1772 case KDBUS_ITEM_NAME_CHANGE:
1773 //size = g_kdbus_NameOwnerChanged_generate (worker, item);
1774 g_error ("'NameOwnerChanged'");
1777 case KDBUS_ITEM_REPLY_TIMEOUT:
1778 case KDBUS_ITEM_REPLY_DEAD:
1779 //size = g_kdbus_KernelMethodError_generate (worker, item);
1780 g_error ("'KernelMethodError'");
1784 g_warning ("Unknown field in kernel message - %lld", item->type);
1789 /* Override information from the user header with data from the kernel */
1790 g_string_printf (worker->msg_sender, "org.freedesktop.DBus");
1792 /* for destination */
1793 if (worker->kmsg->dst_id == KDBUS_DST_ID_BROADCAST)
1794 /* for broadcast messages we don't have to set destination */
1796 else if (worker->kmsg->dst_id == KDBUS_DST_ID_NAME)
1797 g_string_printf (worker->msg_destination, ":1.%" G_GUINT64_FORMAT, (guint64) worker->unique_id);
1799 g_string_printf (worker->msg_destination, ":1.%" G_GUINT64_FORMAT, (guint64) worker->kmsg->dst_id);
1807 * g_kdbus_decode_dbus_msg:
1810 static GDBusMessage *
1811 g_kdbus_decode_dbus_msg (GKDBusWorker *worker,
1812 struct kdbus_msg *msg)
1814 GDBusMessage *message;
1815 struct kdbus_item *item;
1816 gssize data_size = 0;
1817 GArray *body_vectors;
1823 GVariantIter *fields_iter;
1824 guint8 endianness, type, flags, version;
1830 message = g_dbus_message_new ();
1832 body_vectors = g_array_new (FALSE, FALSE, sizeof (GVariantVector));
1834 tmp = g_strdup_printf (":1.%"G_GUINT64_FORMAT, (guint64) msg->src_id);
1835 g_dbus_message_set_sender (message, tmp);
1841 KDBUS_ITEM_FOREACH(item, msg, items)
1843 if (item->size <= KDBUS_ITEM_HEADER_SIZE)
1844 g_error("[KDBUS] %llu bytes - invalid data record\n", item->size);
1846 data_size = item->size - KDBUS_ITEM_HEADER_SIZE;
1850 /* KDBUS_ITEM_DST_NAME */
1851 case KDBUS_ITEM_DST_NAME:
1852 /* Classic D-Bus doesn't make this known to the receiver, so
1853 * we don't do it here either (for compatibility with the
1858 /* KDBUS_ITEM_PALOAD_OFF */
1859 case KDBUS_ITEM_PAYLOAD_OFF:
1861 GVariantVector vector;
1864 /* We want to make sure the bytes are aligned the same as
1865 * they would be if they appeared in a contiguously
1866 * allocated chunk of aligned memory.
1868 * We decide what the alignment 'should' be by consulting
1869 * body_size, which has been tracking the total size of the
1870 * message up to this point.
1872 * We then play around with the pointer by removing as many
1873 * bytes as required to get it to the proper alignment (and
1874 * copy extra bytes accordingly). This means that we will
1875 * grab some extra data in the 'bytes', but it won't be
1876 * shared with GVariant (which means there is no chance of
1877 * it being accidentally retransmitted).
1879 * The kernel does the same thing, so make sure we get the
1880 * expected result. Because of the kernel doing the same,
1881 * the result is that we will always be rounding-down to a
1882 * multiple of 8 for the pointer, which means that the
1883 * pointer will always be valid, assuming the original
1886 * We could fix this with a new GBytes constructor that took
1887 * 'flavour' as a parameter, but it's not worth it...
1889 flavour = body_size & 7;
1890 g_assert ((item->vec.offset & 7) == flavour);
1892 vector.gbytes = g_bytes_new (((guchar *) worker->kdbus_buffer) + item->vec.offset - flavour, item->vec.size + flavour);
1893 vector.data.pointer = g_bytes_get_data (vector.gbytes, NULL);
1894 vector.data.pointer += flavour;
1895 vector.size = item->vec.size;
1897 g_array_append_val (body_vectors, vector);
1898 body_size += vector.size;
1902 /* KDBUS_ITEM_PAYLOAD_MEMFD */
1903 case KDBUS_ITEM_PAYLOAD_MEMFD:
1905 GVariantVector vector;
1909 vector.gbytes = g_bytes_new_take_zero_copy_fd (item->memfd.fd);
1910 data = g_bytes_get_data (vector.gbytes, &size);
1912 g_assert (item->memfd.start + item->memfd.size <= size);
1914 vector.data.pointer = data + item->memfd.start;
1915 vector.size = item->memfd.size;
1917 g_array_append_val (body_vectors, vector);
1918 body_size += vector.size;
1922 /* KDBUS_ITEM_FDS */
1923 case KDBUS_ITEM_FDS:
1925 GUnixFDList *fd_list;
1927 fd_list = g_unix_fd_list_new_from_array (item->fds, data_size / sizeof (int));
1928 g_dbus_message_set_unix_fd_list (message, fd_list);
1929 g_object_unref (fd_list);
1933 /* All of the following items, like CMDLINE,
1934 CGROUP, etc. need some GDBUS API extensions and
1935 should be implemented in the future */
1936 case KDBUS_ITEM_TIMESTAMP:
1938 g_print ("time: seq %llu mon %llu real %llu\n",
1939 item->timestamp.seqnum, item->timestamp.monotonic_ns, item->timestamp.realtime_ns);
1940 //g_dbus_message_set_timestamp (message, item->timestamp.monotonic_ns / 1000);
1941 //g_dbus_message_set_serial (message, item->timestamp.seqnum);
1945 case KDBUS_ITEM_CREDS:
1947 g_print ("creds: u%u eu %u su%u fsu%u g%u eg%u sg%u fsg%u\n",
1948 item->creds.uid, item->creds.euid, item->creds.suid, item->creds.fsuid,
1949 item->creds.gid, item->creds.egid, item->creds.sgid, item->creds.fsgid);
1953 case KDBUS_ITEM_PIDS:
1954 case KDBUS_ITEM_PID_COMM:
1955 case KDBUS_ITEM_TID_COMM:
1956 case KDBUS_ITEM_EXE:
1957 case KDBUS_ITEM_CMDLINE:
1958 case KDBUS_ITEM_CGROUP:
1959 case KDBUS_ITEM_AUDIT:
1960 case KDBUS_ITEM_CAPS:
1961 case KDBUS_ITEM_SECLABEL:
1962 case KDBUS_ITEM_CONN_DESCRIPTION:
1963 case KDBUS_ITEM_AUXGROUPS:
1964 case KDBUS_ITEM_OWNED_NAME:
1965 case KDBUS_ITEM_NAME:
1966 g_print ("unhandled %04x\n", (int) item->type);
1970 g_error ("[KDBUS] DBUS_PAYLOAD: Unknown filed - %lld", item->type);
1975 body = GLIB_PRIVATE_CALL(g_variant_from_vectors) (G_VARIANT_TYPE ("((yyyyuta{tv})v)"),
1976 (GVariantVector *) body_vectors->data,
1977 body_vectors->len, body_size, FALSE);
1980 for (i = 0; i < body_vectors->len; i++)
1981 g_bytes_unref (g_array_index (body_vectors, GVariantVector, i).gbytes);
1983 g_array_free (body_vectors, TRUE);
1985 parts[0] = g_variant_get_child_value (body, 0);
1986 parts[1] = g_variant_get_child_value (body, 1);
1987 g_variant_unref (body);
1989 body = g_variant_get_variant (parts[1]);
1990 g_variant_unref (parts[1]);
1991 g_dbus_message_set_body (message, body);
1992 g_variant_unref (body);
1994 g_variant_get (parts[0], "(yyyyuta{tv})", &endianness, &type, &flags, &version, NULL, &serial, &fields_iter);
1995 g_variant_unref (parts[0]);
1997 while (g_variant_iter_loop (fields_iter, "{tv}", &key, &value))
1998 g_dbus_message_set_header (message, key, value);
2000 g_dbus_message_set_flags (message, flags);
2001 g_dbus_message_set_serial (message, serial);
2002 g_dbus_message_set_message_type (message, type);
2004 g_print ("Received:\n%s\n", g_dbus_message_print (message, 2));
2006 (* worker->message_received_callback) (message, worker->user_data);
2008 g_object_unref (message);
2019 _g_kdbus_receive (GKDBusWorker *kdbus,
2020 GCancellable *cancellable,
2023 struct kdbus_cmd_recv recv;
2024 struct kdbus_msg *msg;
2026 memset (&recv, 0, sizeof recv);
2027 recv.size = sizeof (recv);
2029 if (g_cancellable_set_error_if_cancelled (cancellable, error))
2033 if (ioctl(kdbus->fd, KDBUS_CMD_RECV, &recv) < 0)
2038 if (errno == EAGAIN)
2041 g_warning ("in holding pattern over %d %d\n", kdbus->fd, errno);
2045 g_set_error (error, G_IO_ERROR,
2046 g_io_error_from_errno (errno),
2047 _("Error while receiving message: %s"),
2048 g_strerror (errno));
2052 g_print ("but sometimes that's okay\n");
2054 msg = (struct kdbus_msg *)((guint8 *)kdbus->kdbus_buffer + recv.msg.offset);
2056 if (msg->payload_type == KDBUS_PAYLOAD_DBUS)
2057 g_kdbus_decode_dbus_msg (kdbus, msg);
2058 else if (msg->payload_type == KDBUS_PAYLOAD_KERNEL)
2059 g_kdbus_decode_kernel_msg (kdbus, msg);
2064 G_DBUS_ERROR_FAILED,
2065 _("Received unknown payload type"));
2069 ioctl(kdbus->fd, KDBUS_CMD_FREE, &recv.msg.offset);
2075 g_kdbus_msg_append_item (struct kdbus_msg *msg,
2080 struct kdbus_item *item;
2083 item_size = size + G_STRUCT_OFFSET(struct kdbus_item, data);
2085 if (msg->size + item_size > KDBUS_MSG_MAX_SIZE)
2089 msg->size += (-msg->size) & 7;
2090 item = (struct kdbus_item *) ((guchar *) msg + msg->size);
2092 item->size = item_size;
2093 memcpy (item->data, data, size);
2095 msg->size += item_size;
2101 g_kdbus_msg_append_payload_vec (struct kdbus_msg *msg,
2105 struct kdbus_vec vec = {
2107 .address = (gsize) data
2110 return g_kdbus_msg_append_item (msg, KDBUS_ITEM_PAYLOAD_VEC, &vec, sizeof vec);
2114 g_kdbus_msg_append_payload_memfd (struct kdbus_msg *msg,
2119 struct kdbus_memfd mfd = {
2125 return g_kdbus_msg_append_item (msg, KDBUS_ITEM_PAYLOAD_MEMFD, &mfd, sizeof mfd);
2129 #include "dbusheader.h"
2131 void dump_header (gconstpointer data, gsize size) ;
2133 dump_header (gconstpointer data,
2136 GDBusMessageHeaderFieldsIterator iter;
2137 GDBusMessageHeader header;
2139 header = g_dbus_message_header_new (data, size);
2140 g_print ("header e/%c t/%u f/x%x v/%u s/%"G_GUINT64_FORMAT"\n",
2141 g_dbus_message_header_get_endian (header),
2142 g_dbus_message_header_get_type (header),
2143 g_dbus_message_header_get_flags (header),
2144 g_dbus_message_header_get_version (header),
2145 g_dbus_message_header_get_serial (header));
2147 iter = g_dbus_message_header_iterate_fields (header);
2149 while (g_dbus_message_header_fields_iterator_next (&iter))
2151 const gchar *string;
2155 key = g_dbus_message_header_fields_iterator_get_key (iter);
2159 case G_DBUS_MESSAGE_HEADER_FIELD_PATH:
2160 if (g_dbus_message_header_fields_iterator_get_value_as_object_path (iter, &string))
2161 g_print (" path: %s\n", string);
2163 g_print (" path: <<invalid string>>\n");
2166 case G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE:
2167 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2168 g_print (" interface: %s\n", string);
2170 g_print (" interface: <<invalid string>>\n");
2173 case G_DBUS_MESSAGE_HEADER_FIELD_MEMBER:
2174 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2175 g_print (" member: %s\n", string);
2177 g_print (" member: <<invalid string>>\n");
2180 case G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME:
2181 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2182 g_print (" error: %s\n", string);
2184 g_print (" error: <<invalid string>>\n");
2187 case G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL:
2188 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2189 g_print (" serial: %s\n", string);
2191 g_print (" serial: <<invalid string>>\n");
2194 case G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION:
2195 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2196 g_print (" destination: %s\n", string);
2198 g_print (" destination: <<invalid string>>\n");
2201 case G_DBUS_MESSAGE_HEADER_FIELD_SENDER:
2202 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2203 g_print (" sender: %s\n", string);
2205 g_print (" sender: <<invalid string>>\n");
2209 g_print ("unknown field code %"G_GUINT64_FORMAT"\n", key);
2210 g_assert_not_reached ();
2221 * Returns: size of data sent or -1 when error
2224 _g_kdbus_send (GKDBusWorker *kdbus,
2225 GDBusMessage *message,
2228 struct kdbus_msg *msg = alloca (KDBUS_MSG_MAX_SIZE);
2229 GVariantVectors body_vectors;
2230 struct kdbus_cmd_send send;
2232 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), -1);
2234 /* fill in as we go... */
2235 memset (msg, 0, sizeof (struct kdbus_msg));
2236 msg->size = sizeof (struct kdbus_msg);
2237 msg->payload_type = KDBUS_PAYLOAD_DBUS;
2238 msg->src_id = kdbus->unique_id;
2239 msg->cookie = g_dbus_message_get_serial(message);
2241 /* Message destination */
2243 const gchar *dst_name;
2245 dst_name = g_dbus_message_get_destination (message);
2247 if (dst_name != NULL)
2249 if (g_dbus_is_unique_name (dst_name))
2251 if (dst_name[1] != '1' || dst_name[2] != '.')
2253 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_NAME_HAS_NO_OWNER,
2254 "Invalid unique D-Bus name '%s'", dst_name);
2258 /* We already know that it passes the checks for unique
2259 * names, so no need to perform error checking on strtoull.
2261 msg->dst_id = strtoull (dst_name + 3, NULL, 10);
2266 g_kdbus_msg_append_item (msg, KDBUS_ITEM_DST_NAME, dst_name, strlen (dst_name) + 1);
2267 msg->dst_id = KDBUS_DST_ID_NAME;
2271 msg->dst_id = KDBUS_DST_ID_BROADCAST;
2274 /* File descriptors */
2276 GUnixFDList *fd_list;
2278 fd_list = g_dbus_message_get_unix_fd_list (message);
2280 if (fd_list != NULL)
2285 fds = g_unix_fd_list_peek_fds (fd_list, &n_fds);
2288 g_kdbus_msg_append_item (msg, KDBUS_ITEM_FDS, fds, sizeof (gint) * n_fds);
2294 struct dbus_fixed_header fh;
2295 GHashTableIter header_iter;
2296 GVariantBuilder builder;
2297 gpointer key, value;
2301 fh.endian = (G_BYTE_ORDER == G_LITTLE_ENDIAN) ? 'l': 'B';
2302 fh.type = g_dbus_message_get_message_type (message);
2303 fh.flags = g_dbus_message_get_flags (message);
2306 fh.serial = g_dbus_message_get_serial (message);
2307 parts[0] = g_variant_new_from_data (DBUS_FIXED_HEADER_TYPE, &fh, sizeof fh, TRUE, NULL, NULL);
2309 g_dbus_message_init_header_iter (message, &header_iter);
2310 g_variant_builder_init (&builder, DBUS_EXTENDED_HEADER_TYPE);
2312 /* We set the sender field to the correct value for ourselves */
2313 g_variant_builder_add (&builder, "{tv}",
2314 (guint64) G_DBUS_MESSAGE_HEADER_FIELD_SENDER,
2315 g_variant_new_printf (":1.%"G_GUINT64_FORMAT, kdbus->unique_id));
2317 while (g_hash_table_iter_next (&header_iter, &key, &value))
2319 guint64 key_int = (gsize) key;
2323 /* These are the normal header fields that get passed
2326 case G_DBUS_MESSAGE_HEADER_FIELD_PATH:
2327 case G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE:
2328 case G_DBUS_MESSAGE_HEADER_FIELD_MEMBER:
2329 case G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME:
2330 case G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL:
2331 case G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION:
2332 g_variant_builder_add (&builder, "{tv}", key_int, value);
2333 /* This is a little bit gross.
2335 * We must send the header part of the message in a single
2336 * vector as per kdbus rules, but the GVariant serialiser
2337 * code will split any item >= 128 bytes into its own
2338 * vector to save the copy.
2340 * No header field should be that big anyway... right?
2342 g_assert_cmpint (g_variant_get_size (value), <, 128);
2345 /* We send this one unconditionally, but set it ourselves */
2346 case G_DBUS_MESSAGE_HEADER_FIELD_SENDER:
2349 /* We don't send these at all in GVariant format */
2350 case G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE:
2351 case G_DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS:
2355 g_assert_not_reached ();
2358 parts[1] = g_variant_builder_end (&builder);
2360 body = g_dbus_message_get_body (message);
2362 body = g_variant_new ("()");
2363 parts[2] = g_variant_new_variant (body);
2365 body = g_variant_ref_sink (g_variant_new_tuple (parts, G_N_ELEMENTS (parts)));
2366 GLIB_PRIVATE_CALL(g_variant_to_vectors) (body, &body_vectors);
2368 /* Sanity check to make sure the header is really contiguous:
2370 * - we must have at least one vector in the output
2371 * - the first vector must completely contain at least the header
2373 g_assert_cmpint (body_vectors.vectors->len, >, 0);
2374 g_assert_cmpint (g_array_index (body_vectors.vectors, GVariantVector, 0).size, >=,
2375 g_variant_get_size (parts[0]) + g_variant_get_size (parts[1]));
2377 g_variant_unref (body);
2383 for (i = 0; i < body_vectors.vectors->len; i++)
2385 GVariantVector vector = g_array_index (body_vectors.vectors, GVariantVector, i);
2391 fd = g_bytes_get_zero_copy_fd (vector.gbytes);
2395 const guchar *bytes_data;
2398 bytes_data = g_bytes_get_data (vector.gbytes, &bytes_size);
2400 if (bytes_data <= vector.data.pointer && vector.data.pointer + vector.size <= bytes_data + bytes_size)
2402 if (!g_kdbus_msg_append_payload_memfd (msg, fd, vector.data.pointer - bytes_data, vector.size))
2407 if (!g_kdbus_msg_append_payload_vec (msg, vector.data.pointer, vector.size))
2413 if (!g_kdbus_msg_append_payload_vec (msg, vector.data.pointer, vector.size))
2418 if (!g_kdbus_msg_append_payload_vec (msg, body_vectors.extra_bytes->data + vector.data.offset, vector.size))
2426 msg->flags = ((g_dbus_message_get_flags (message) & G_DBUS_MESSAGE_FLAGS_NO_REPLY_EXPECTED) ? 0 : KDBUS_MSG_EXPECT_REPLY) |
2427 ((g_dbus_message_get_flags (message) & G_DBUS_MESSAGE_FLAGS_NO_AUTO_START) ? KDBUS_MSG_NO_AUTO_START : 0);
2429 if ((msg->flags) & KDBUS_MSG_EXPECT_REPLY)
2430 msg->timeout_ns = 1000LU * g_get_monotonic_time() + KDBUS_TIMEOUT_NS;
2432 msg->cookie_reply = g_dbus_message_get_reply_serial(message);
2436 if (dst_id == KDBUS_DST_ID_BROADCAST)
2438 struct kdbus_bloom_filter *bloom_filter;
2440 bloom_filter = g_kdbus_append_bloom (&item, kdbus->bloom_size);
2441 g_kdbus_setup_bloom (kdbus, message, bloom_filter);
2445 send.size = sizeof (send);
2447 send.msg_address = (gsize) msg;
2453 if (ioctl(kdbus->fd, KDBUS_CMD_SEND, &send))
2456 GString *error_name;
2457 error_name = g_string_new (NULL);
2461 g_string_free (error_name,TRUE);
2464 else if (errno == ENXIO)
2466 g_string_printf (error_name, "Name %s does not exist", g_dbus_message_get_destination(dbus_msg));
2467 g_kdbus_generate_local_error (worker,
2469 g_variant_new ("(s)",error_name->str),
2470 G_DBUS_ERROR_SERVICE_UNKNOWN);
2471 g_string_free (error_name,TRUE);
2474 else if ((errno == ESRCH) || (errno == EADDRNOTAVAIL))
2476 if (kmsg->flags & KDBUS_MSG_FLAGS_NO_AUTO_START)
2478 g_string_printf (error_name, "Name %s does not exist", g_dbus_message_get_destination(dbus_msg));
2479 g_kdbus_generate_local_error (worker,
2481 g_variant_new ("(s)",error_name->str),
2482 G_DBUS_ERROR_SERVICE_UNKNOWN);
2483 g_string_free (error_name,TRUE);
2488 g_string_printf (error_name, "The name %s was not provided by any .service files", g_dbus_message_get_destination(dbus_msg));
2489 g_kdbus_generate_local_error (worker,
2491 g_variant_new ("(s)",error_name->str),
2492 G_DBUS_ERROR_SERVICE_UNKNOWN);
2493 g_string_free (error_name,TRUE);
2498 g_print ("[KDBUS] ioctl error sending kdbus message:%d (%m)\n",errno);
2499 g_set_error (error, G_IO_ERROR, g_io_error_from_errno(errno), _("Error sending message - KDBUS_CMD_MSG_SEND error"));
2501 perror("ioctl send");
2502 g_error ("IOCTL SEND: %d\n",errno);
2509 /* We end up here if:
2510 * - too many kdbus_items
2511 * - too large kdbus_msg size
2512 * - too much vector data
2514 * We need to compact the message before sending it.
2516 g_assert_not_reached ();
2520 g_kdbus_worker_new (const gchar *address,
2523 GKDBusWorker *worker;
2525 worker = g_object_new (G_TYPE_KDBUS_WORKER, NULL);
2526 if (!_g_kdbus_open (worker, address, error))
2528 g_object_unref (worker);
2536 g_kdbus_worker_associate (GKDBusWorker *worker,
2537 GDBusCapabilityFlags capabilities,
2538 GDBusWorkerMessageReceivedCallback message_received_callback,
2539 GDBusWorkerMessageAboutToBeSentCallback message_about_to_be_sent_callback,
2540 GDBusWorkerDisconnectedCallback disconnected_callback,
2543 worker->capabilities = capabilities;
2544 worker->message_received_callback = message_received_callback;
2545 worker->message_about_to_be_sent_callback = message_about_to_be_sent_callback;
2546 worker->disconnected_callback = disconnected_callback;
2547 worker->user_data = user_data;
2551 g_kdbus_worker_unfreeze (GKDBusWorker *worker)
2555 if (worker->source != NULL)
2558 worker->context = g_main_context_ref_thread_default ();
2559 worker->source = g_unix_fd_source_new (worker->fd, G_IO_IN);
2561 g_source_set_callback (worker->source, (GSourceFunc) kdbus_ready, worker, NULL);
2562 name = g_strdup_printf ("kdbus worker");
2563 g_source_set_name (worker->source, name);
2566 g_source_attach (worker->source, worker->context);
2570 g_kdbus_worker_send_message (GKDBusWorker *worker,
2571 GDBusMessage *message,
2574 return _g_kdbus_send (worker, message, error);
2578 g_kdbus_worker_stop (GKDBusWorker *worker)
2583 g_kdbus_worker_flush_sync (GKDBusWorker *worker)
2588 g_kdbus_worker_close (GKDBusWorker *worker,
2589 GCancellable *cancellable,
2590 GSimpleAsyncResult *result)