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}
152 MATCH_ELEMENT_SENDER,
153 MATCH_ELEMENT_INTERFACE,
154 MATCH_ELEMENT_MEMBER,
156 MATCH_ELEMENT_PATH_NAMESPACE,
157 MATCH_ELEMENT_DESTINATION,
158 MATCH_ELEMENT_ARG0NAMESPACE,
159 MATCH_ELEMENT_EAVESDROP,
161 MATCH_ELEMENT_ARGNPATH,
164 /* MatchElement struct */
174 MatchElement *elements;
183 is_key (const char *key_start, const char *key_end, char *value)
185 gsize len = strlen (value);
187 if (len != key_end - key_start)
190 return strncmp (key_start, value, len) == 0;
199 parse_key (MatchElement *element, const char *key_start, const char *key_end)
203 if (is_key (key_start, key_end, "type"))
205 element->type = MATCH_ELEMENT_TYPE;
207 else if (is_key (key_start, key_end, "sender"))
209 element->type = MATCH_ELEMENT_SENDER;
211 else if (is_key (key_start, key_end, "interface"))
213 element->type = MATCH_ELEMENT_INTERFACE;
215 else if (is_key (key_start, key_end, "member"))
217 element->type = MATCH_ELEMENT_MEMBER;
219 else if (is_key (key_start, key_end, "path"))
221 element->type = MATCH_ELEMENT_PATH;
223 else if (is_key (key_start, key_end, "path_namespace"))
225 element->type = MATCH_ELEMENT_PATH_NAMESPACE;
227 else if (is_key (key_start, key_end, "destination"))
229 element->type = MATCH_ELEMENT_DESTINATION;
231 else if (is_key (key_start, key_end, "arg0namespace"))
233 element->type = MATCH_ELEMENT_ARG0NAMESPACE;
235 else if (is_key (key_start, key_end, "eavesdrop"))
237 element->type = MATCH_ELEMENT_EAVESDROP;
239 else if (key_end - key_start > 3 && is_key (key_start, key_start + 3, "arg"))
241 const char *digits = key_start + 3;
242 const char *end_digits = digits;
244 while (end_digits < key_end && g_ascii_isdigit (*end_digits))
247 if (end_digits == key_end) /* argN */
249 element->type = MATCH_ELEMENT_ARGN;
250 element->arg = atoi (digits);
252 else if (is_key (end_digits, key_end, "path")) /* argNpath */
254 element->type = MATCH_ELEMENT_ARGNPATH;
255 element->arg = atoi (digits);
272 parse_value (MatchElement *element, const char *s)
277 value = g_string_new ("");
300 g_string_append_c (value, *s);
304 else if (quote_char == '\\')
306 /* \ only counts as an escape if escaping a quote mark */
308 g_string_append_c (value, '\\');
310 g_string_append_c (value, *s);
313 else /* quote_char == ' */
318 g_string_append_c (value, *s);
323 if (quote_char == '\\')
324 g_string_append_c (value, '\\');
325 else if (quote_char == '\'')
327 g_string_free (value, TRUE);
331 element->value = g_string_free (value, FALSE);
341 match_new (const char *str)
346 const char *key_start;
348 MatchElement element;
351 elements = g_array_new (TRUE, TRUE, sizeof (MatchElement));
357 memset (&element, 0, sizeof (element));
359 /* Skip initial whitespace */
360 while (*p && g_ascii_isspace (*p))
365 /* Read non-whitespace non-equals chars */
366 while (*p && *p != '=' && !g_ascii_isspace (*p))
371 /* Skip any whitespace after key */
372 while (*p && g_ascii_isspace (*p))
375 if (key_start == key_end)
376 continue; /* Allow trailing whitespace */
382 if (!parse_key (&element, key_start, key_end))
385 p = parse_value (&element, p);
389 g_array_append_val (elements, element);
392 match = g_new0 (Match, 1);
393 match->n_elements = elements->len;
394 match->elements = (MatchElement *)g_array_free (elements, FALSE);
399 for (i = 0; i < elements->len; i++)
400 g_free (g_array_index (elements, MatchElement, i).value);
401 g_array_free (elements, TRUE);
411 match_free (Match *match)
414 for (i = 0; i < match->n_elements; i++)
415 g_free (match->elements[i].value);
416 g_free (match->elements);
426 g_kdbus_worker_finalize (GObject *object)
428 GKDBusWorker *kdbus = G_KDBUS_WORKER (object);
430 if (kdbus->kdbus_buffer != NULL)
431 munmap (kdbus->kdbus_buffer, KDBUS_POOL_SIZE);
433 kdbus->kdbus_buffer = NULL;
435 if (kdbus->fd != -1 && !kdbus->closed)
436 _g_kdbus_close (kdbus);
438 G_OBJECT_CLASS (g_kdbus_worker_parent_class)->finalize (object);
442 g_kdbus_worker_class_init (GKDBusWorkerClass *class)
444 class->finalize = g_kdbus_worker_finalize;
448 g_kdbus_worker_init (GKDBusWorker *kdbus)
452 kdbus->unique_id = -1;
453 kdbus->unique_name = NULL;
455 kdbus->kdbus_buffer = NULL;
457 kdbus->flags = 0; /* KDBUS_HELLO_ACCEPT_FD */
458 kdbus->attach_flags_send = _KDBUS_ATTACH_ALL;
459 kdbus->attach_flags_recv = _KDBUS_ATTACH_ALL;
463 kdbus_ready (gint fd,
464 GIOCondition condition,
467 GKDBusWorker *kdbus = user_data;
468 GError *error = NULL;
470 _g_kdbus_receive (kdbus, NULL, &error);
471 g_assert_no_error (error);
473 return G_SOURCE_CONTINUE;
477 _g_kdbus_open (GKDBusWorker *worker,
478 const gchar *address,
481 g_return_val_if_fail (G_IS_KDBUS_WORKER (worker), FALSE);
483 worker->fd = open(address, O_RDWR|O_NOCTTY|O_CLOEXEC);
486 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED, _("Can't open kdbus endpoint"));
490 worker->closed = FALSE;
501 g_kdbus_free_data (GKDBusWorker *kdbus,
504 struct kdbus_cmd_free cmd;
510 ret = ioctl (kdbus->fd, KDBUS_CMD_FREE, &cmd);
519 * g_kdbus_translate_nameowner_flags:
523 g_kdbus_translate_nameowner_flags (GBusNameOwnerFlags flags,
524 guint64 *kdbus_flags)
530 if (flags & G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT)
531 new_flags |= KDBUS_NAME_ALLOW_REPLACEMENT;
533 if (flags & G_BUS_NAME_OWNER_FLAGS_REPLACE)
534 new_flags |= KDBUS_NAME_REPLACE_EXISTING;
536 if (!(flags & G_BUS_NAME_OWNER_FLAGS_DO_NOT_QUEUE))
537 new_flags |= KDBUS_NAME_QUEUE;
539 *kdbus_flags = new_flags;
548 _g_kdbus_close (GKDBusWorker *kdbus)
550 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), FALSE);
555 g_source_destroy (kdbus->source);
558 g_main_context_unref (kdbus->context);
559 kdbus->context = NULL;
564 kdbus->closed = TRUE;
568 * _g_kdbus_is_closed:
572 _g_kdbus_is_closed (GKDBusWorker *kdbus)
574 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), FALSE);
576 return kdbus->closed;
585 _g_kdbus_Hello (GKDBusWorker *worker,
588 struct kdbus_cmd_hello *hello;
589 struct kdbus_item *item;
592 size_t size, conn_name_size;
594 conn_name = "gdbus-kdbus";
595 conn_name_size = strlen (conn_name);
597 size = KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_cmd_hello, items)) +
598 KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, str) + conn_name_size + 1);
600 hello = g_alloca0 (size);
601 hello->flags = worker->flags;
602 hello->attach_flags_send = worker->attach_flags_send;
603 hello->attach_flags_recv = worker->attach_flags_recv;
605 hello->pool_size = KDBUS_POOL_SIZE;
608 item->size = G_STRUCT_OFFSET (struct kdbus_item, str) + conn_name_size + 1;
609 item->type = KDBUS_ITEM_CONN_DESCRIPTION;
610 memcpy (item->str, conn_name, conn_name_size+1);
611 item = KDBUS_ITEM_NEXT (item);
613 if (ioctl(worker->fd, KDBUS_CMD_HELLO, hello))
615 g_set_error (error, G_IO_ERROR,
616 g_io_error_from_errno (errno),
617 _("Failed to send HELLO: %s"),
622 worker->kdbus_buffer = mmap(NULL, KDBUS_POOL_SIZE, PROT_READ, MAP_SHARED, worker->fd, 0);
623 if (worker->kdbus_buffer == MAP_FAILED)
625 g_set_error (error, G_IO_ERROR,
626 g_io_error_from_errno (errno),
632 if (hello->bus_flags > 0xFFFFFFFFULL)
634 g_set_error_literal (error,
637 _("Incompatible HELLO flags"));
641 memcpy (worker->bus_id, hello->id128, 16);
643 worker->unique_id = hello->id;
644 asprintf(&worker->unique_name, ":1.%llu", (unsigned long long) hello->id);
646 /* read bloom filters parameters */
647 //worker->bloom_size = (gsize) hello->bloom.size;
648 //worker->bloom_n_hash = (guint) hello->bloom.n_hash;
650 return g_variant_new ("(s)", worker->unique_name);
655 * _g_kdbus_RequestName:
659 _g_kdbus_RequestName (GKDBusWorker *worker,
661 GBusNameOwnerFlags flags,
665 struct kdbus_cmd_name *kdbus_name;
670 status = G_BUS_REQUEST_NAME_FLAGS_PRIMARY_OWNER;
672 if (!g_dbus_is_name (name))
676 G_DBUS_ERROR_INVALID_ARGS,
677 "Given bus name \"%s\" is not valid", name);
685 G_DBUS_ERROR_INVALID_ARGS,
686 "Cannot acquire a service starting with ':' such as \"%s\"", name);
690 g_kdbus_translate_nameowner_flags (flags, &kdbus_flags);
692 len = strlen(name) + 1;
693 size = G_STRUCT_OFFSET (struct kdbus_cmd_name, items) + KDBUS_ITEM_SIZE(len);
694 kdbus_name = g_alloca0 (size);
695 kdbus_name->size = size;
696 kdbus_name->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
697 kdbus_name->items[0].type = KDBUS_ITEM_NAME;
698 kdbus_name->flags = kdbus_flags;
699 memcpy (kdbus_name->items[0].str, name, len);
701 ret = ioctl(worker->fd, KDBUS_CMD_NAME_ACQUIRE, kdbus_name);
705 status = G_BUS_REQUEST_NAME_FLAGS_EXISTS;
706 else if (errno == EALREADY)
707 status = G_BUS_REQUEST_NAME_FLAGS_ALREADY_OWNER;
710 g_set_error (error, G_IO_ERROR,
711 g_io_error_from_errno (errno),
712 _("Error while acquiring name: %s"),
718 if (kdbus_name->flags & KDBUS_NAME_IN_QUEUE)
719 status = G_BUS_REQUEST_NAME_FLAGS_IN_QUEUE;
721 result = g_variant_new ("(u)", status);
728 * _g_kdbus_ReleaseName:
732 _g_kdbus_ReleaseName (GKDBusWorker *worker,
737 struct kdbus_cmd_name *kdbus_name;
741 status = G_BUS_RELEASE_NAME_FLAGS_RELEASED;
743 if (!g_dbus_is_name (name))
747 G_DBUS_ERROR_INVALID_ARGS,
748 "Given bus name \"%s\" is not valid", name);
756 G_DBUS_ERROR_INVALID_ARGS,
757 "Cannot release a service starting with ':' such as \"%s\"", name);
761 len = strlen(name) + 1;
762 size = G_STRUCT_OFFSET (struct kdbus_cmd_name, items) + KDBUS_ITEM_SIZE(len);
763 kdbus_name = g_alloca0 (size);
764 kdbus_name->size = size;
765 kdbus_name->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
766 kdbus_name->items[0].type = KDBUS_ITEM_NAME;
767 memcpy (kdbus_name->items[0].str, name, len);
769 ret = ioctl(worker->fd, KDBUS_CMD_NAME_RELEASE, kdbus_name);
773 status = G_BUS_RELEASE_NAME_FLAGS_NON_EXISTENT;
774 else if (errno == EADDRINUSE)
775 status = G_BUS_RELEASE_NAME_FLAGS_NOT_OWNER;
778 g_set_error (error, G_IO_ERROR,
779 g_io_error_from_errno (errno),
780 _("Error while releasing name: %s"),
786 result = g_variant_new ("(u)", status);
797 _g_kdbus_GetBusId (GKDBusWorker *worker,
804 result_str = g_string_new (NULL);
806 for (cnt=0; cnt<16; cnt++)
807 g_string_append_printf (result_str, "%02x", worker->bus_id[cnt]);
809 result = g_variant_new ("(s)", result_str->str);
810 g_string_free (result_str, TRUE);
817 * _g_kdbus_GetListNames:
821 _g_kdbus_GetListNames (GKDBusWorker *worker,
822 guint list_name_type,
826 GVariantBuilder *builder;
828 struct kdbus_cmd_name_list cmd = {};
829 struct kdbus_name_list *name_list;
830 struct kdbus_name_info *name;
838 cmd.flags = KDBUS_NAME_LIST_ACTIVATORS; /* ListActivatableNames */
840 cmd.flags = KDBUS_NAME_LIST_UNIQUE | KDBUS_NAME_LIST_NAMES; /* ListNames */
842 ret = ioctl(worker->fd, KDBUS_CMD_NAME_LIST, &cmd);
848 _("Error listing names"));
852 name_list = (struct kdbus_name_list *) ((guint8 *) worker->kdbus_buffer + cmd.offset);
853 builder = g_variant_builder_new (G_VARIANT_TYPE ("as"));
855 KDBUS_ITEM_FOREACH(name, name_list, names)
857 struct kdbus_item *item;
858 const gchar *item_name = "";
860 if ((cmd.flags & KDBUS_NAME_LIST_UNIQUE) && name->owner_id != prev_id)
862 GString *unique_name;
864 unique_name = g_string_new (NULL);
865 g_string_printf (unique_name, ":1.%llu", name->owner_id);
866 g_variant_builder_add (builder, "s", unique_name->str);
867 g_string_free (unique_name,TRUE);
868 prev_id = name->owner_id;
871 KDBUS_ITEM_FOREACH(item, name, items)
872 if (item->type == KDBUS_ITEM_OWNED_NAME)
873 item_name = item->name.name;
875 if (g_dbus_is_name (item_name))
876 g_variant_builder_add (builder, "s", item_name);
879 result = g_variant_new ("(as)", builder);
880 g_variant_builder_unref (builder);
882 g_kdbus_free_data (worker, cmd.offset);
888 * _g_kdbus_NameHasOwner_internal:
892 g_kdbus_NameHasOwner_internal (GKDBusWorker *worker,
896 struct kdbus_cmd_info *cmd;
900 if (g_dbus_is_unique_name(name))
902 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items);
903 cmd = g_alloca0 (size);
904 cmd->id = g_ascii_strtoull (name+3, NULL, 10);
908 len = strlen(name) + 1;
909 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items) + KDBUS_ITEM_SIZE(len);
910 cmd = g_alloca0 (size);
911 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
912 cmd->items[0].type = KDBUS_ITEM_NAME;
913 memcpy (cmd->items[0].str, name, len);
917 ret = ioctl(worker->fd, KDBUS_CMD_CONN_INFO, cmd);
918 g_kdbus_free_data (worker, cmd->offset);
928 * _g_kdbus_GetListQueuedOwners:
932 _g_kdbus_GetListQueuedOwners (GKDBusWorker *worker,
937 GVariantBuilder *builder;
938 GString *unique_name;
941 struct kdbus_cmd_name_list cmd = {};
942 struct kdbus_name_list *name_list;
943 struct kdbus_name_info *kname;
945 if (!g_dbus_is_name (name))
949 G_DBUS_ERROR_INVALID_ARGS,
950 "Given bus name \"%s\" is not valid", name);
954 if (!g_kdbus_NameHasOwner_internal (worker, name, error))
958 G_DBUS_ERROR_NAME_HAS_NO_OWNER,
959 "Could not get owner of name '%s': no such name", name);
963 cmd.flags = KDBUS_NAME_LIST_QUEUED;
964 ret = ioctl(worker->fd, KDBUS_CMD_NAME_LIST, &cmd);
970 _("Error listing names"));
974 name_list = (struct kdbus_name_list *) ((guint8 *) worker->kdbus_buffer + cmd.offset);
976 unique_name = g_string_new (NULL);
977 builder = g_variant_builder_new (G_VARIANT_TYPE ("as"));
978 KDBUS_ITEM_FOREACH(kname, name_list, names)
980 struct kdbus_item *item;
981 const char *item_name = "";
983 KDBUS_ITEM_FOREACH(item, kname, items)
984 if (item->type == KDBUS_ITEM_NAME)
985 item_name = item->str;
987 if (strcmp(item_name, name))
990 g_string_printf (unique_name, ":1.%llu", kname->owner_id);
991 g_variant_builder_add (builder, "s", item_name);
994 result = g_variant_new ("(as)", builder);
995 g_variant_builder_unref (builder);
996 g_string_free (unique_name,TRUE);
998 g_kdbus_free_data (worker, cmd.offset);
1004 * g_kdbus_GetConnInfo_internal:
1008 g_kdbus_GetConnInfo_internal (GKDBusWorker *worker,
1015 struct kdbus_cmd_info *cmd;
1016 struct kdbus_info *conn_info;
1017 struct kdbus_item *item;
1023 if (!g_dbus_is_name (name))
1027 G_DBUS_ERROR_INVALID_ARGS,
1028 "Given bus name \"%s\" is not valid", name);
1032 if (!g_kdbus_NameHasOwner_internal (worker, name, error))
1036 G_DBUS_ERROR_NAME_HAS_NO_OWNER,
1037 "Could not get owner of name '%s': no such name", name);
1041 if (g_dbus_is_unique_name(name))
1043 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items);
1044 cmd = g_alloca0 (size);
1045 cmd->id = g_ascii_strtoull (name+3, NULL, 10);
1049 len = strlen(name) + 1;
1050 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items) + KDBUS_ITEM_SIZE(len);
1051 cmd = g_alloca0 (size);
1052 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
1053 cmd->items[0].type = KDBUS_ITEM_NAME;
1054 memcpy (cmd->items[0].str, name, len);
1057 cmd->flags = _KDBUS_ATTACH_ALL;
1060 ret = ioctl(worker->fd, KDBUS_CMD_CONN_INFO, cmd);
1065 G_DBUS_ERROR_FAILED,
1066 _("Could not get connection info"));
1070 conn_info = (struct kdbus_info *) ((guint8 *) worker->kdbus_buffer + cmd->offset);
1073 if (conn_info->flags & KDBUS_HELLO_ACTIVATOR)
1077 if (flag == G_BUS_CREDS_UNIQUE_NAME)
1079 GString *unique_name;
1081 unique_name = g_string_new (NULL);
1082 g_string_printf (unique_name, ":1.%llu", (unsigned long long) conn_info->id);
1083 result = g_variant_new ("(s)", unique_name->str);
1084 g_string_free (unique_name,TRUE);
1088 KDBUS_ITEM_FOREACH(item, conn_info, items)
1092 case KDBUS_ITEM_PIDS:
1094 if (flag == G_BUS_CREDS_PID)
1096 guint pid = item->pids.pid;
1097 result = g_variant_new ("(u)", pid);
1101 case KDBUS_ITEM_CREDS:
1103 if (flag == G_BUS_CREDS_UID)
1105 guint uid = item->creds.uid;
1106 result = g_variant_new ("(u)", uid);
1110 case KDBUS_ITEM_SECLABEL:
1111 case KDBUS_ITEM_PID_COMM:
1112 case KDBUS_ITEM_TID_COMM:
1113 case KDBUS_ITEM_EXE:
1114 case KDBUS_ITEM_CMDLINE:
1115 case KDBUS_ITEM_CGROUP:
1116 case KDBUS_ITEM_CAPS:
1117 case KDBUS_ITEM_AUDIT:
1118 case KDBUS_ITEM_CONN_DESCRIPTION:
1119 case KDBUS_ITEM_AUXGROUPS:
1120 case KDBUS_ITEM_OWNED_NAME:
1126 g_kdbus_free_data (worker, cmd->offset);
1132 * _g_kdbus_GetNameOwner:
1136 _g_kdbus_GetNameOwner (GKDBusWorker *worker,
1140 return g_kdbus_GetConnInfo_internal (worker,
1142 G_BUS_CREDS_UNIQUE_NAME,
1148 * _g_kdbus_GetConnectionUnixProcessID:
1152 _g_kdbus_GetConnectionUnixProcessID (GKDBusWorker *worker,
1156 return g_kdbus_GetConnInfo_internal (worker,
1164 * _g_kdbus_GetConnectionUnixUser:
1168 _g_kdbus_GetConnectionUnixUser (GKDBusWorker *worker,
1172 return g_kdbus_GetConnInfo_internal (worker,
1180 * g_kdbus_bloom_add_data:
1181 * Based on bus-bloom.c from systemd
1182 * http://cgit.freedesktop.org/systemd/systemd/tree/src/libsystemd/sd-bus/bus-bloom.c
1185 g_kdbus_bloom_add_data (GKDBusWorker *worker,
1186 guint64 bloom_data [],
1192 guint bytes_num = 0;
1198 bit_num = worker->bloom_size * 8;
1201 bytes_num = ((__builtin_clzll(bit_num) ^ 63U) + 7) / 8;
1203 for (cnt_1 = 0; cnt_1 < (worker->bloom_n_hash); cnt_1++)
1205 for (cnt_2 = 0; cnt_2 < bytes_num; cnt_2++)
1209 g_siphash24(hash, data, n, hash_keys[cnt_1++]);
1213 p = (p << 8ULL) | (guint64) hash[8 - c];
1218 bloom_data[p >> 6] |= 1ULL << (p & 63);
1224 * g_kdbus_bloom_add_pair:
1228 g_kdbus_bloom_add_pair (GKDBusWorker *worker,
1229 guint64 bloom_data [],
1230 const gchar *parameter,
1236 size = strlen(parameter) + strlen(value) + 1;
1240 strcpy(stpcpy(stpcpy(buf, parameter), ":"), value);
1241 g_kdbus_bloom_add_data(worker, bloom_data, buf, size);
1246 * g_kdbus_bloom_add_prefixes:
1250 g_kdbus_bloom_add_prefixes (GKDBusWorker *worker,
1251 guint64 bloom_data [],
1252 const gchar *parameter,
1259 size = strlen(parameter) + strlen(value) + 1;
1263 strcpy(stpcpy(stpcpy(buf, parameter), ":"), value);
1268 last_sep = strrchr(buf, separator);
1269 if (!last_sep || last_sep == buf)
1273 g_kdbus_bloom_add_data(worker, bloom_data, buf, last_sep-buf);
1279 * _g_kdbus_AddMatch:
1283 _g_kdbus_AddMatch (GKDBusWorker *worker,
1284 const gchar *match_rule,
1288 MatchElement *element;
1289 const gchar *sender_name;
1290 gsize sender_len, size;
1291 struct kdbus_cmd_match *cmd_match;
1292 struct kdbus_item *item;
1298 if (match_rule[0] == '-')
1301 match = match_new (match_rule);
1309 src_id = KDBUS_MATCH_ID_ANY;
1311 bloom = g_alloca0 (worker->bloom_size);
1312 size = KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_cmd_match, items));
1313 match = match_new (match_rule);
1315 for (cnt = 0; cnt < match->n_elements; cnt++)
1317 element = &match->elements[cnt];
1318 switch (element->type)
1320 case MATCH_ELEMENT_SENDER:
1321 if (g_dbus_is_unique_name(element->value))
1323 src_id = g_ascii_strtoull ((element->value)+3, NULL, 10);
1324 size += KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, id) + sizeof(src_id));
1326 else if (g_dbus_is_name (element->value))
1328 sender_name = element->value;
1329 sender_len = strlen(element->value) + 1;
1330 size += KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, str) + sender_len);
1334 g_critical ("Error while adding a match: %d", cookie);
1340 case MATCH_ELEMENT_TYPE:
1341 g_kdbus_bloom_add_pair (worker, bloom, "message-type", element->value);
1344 case MATCH_ELEMENT_INTERFACE:
1345 g_kdbus_bloom_add_pair (worker, bloom, "interface", element->value);
1348 case MATCH_ELEMENT_MEMBER:
1349 g_kdbus_bloom_add_pair (worker, bloom, "member", element->value);
1352 case MATCH_ELEMENT_PATH:
1353 g_kdbus_bloom_add_pair (worker, bloom, "path", element->value);
1356 case MATCH_ELEMENT_PATH_NAMESPACE:
1357 if (g_strcmp0 (element->value, "/"))
1358 g_kdbus_bloom_add_pair (worker, bloom, "path-slash-prefix", element->value);
1361 case MATCH_ELEMENT_ARGN:
1362 asprintf (&type, "arg%u", element->arg);
1363 g_kdbus_bloom_add_pair (worker, bloom, type, element->value);
1367 case MATCH_ELEMENT_ARGNPATH:
1368 asprintf (&type, "arg%u-slash-prefix", element->arg);
1369 g_kdbus_bloom_add_pair (worker, bloom, type, element->value);
1373 case MATCH_ELEMENT_ARG0NAMESPACE:
1374 g_kdbus_bloom_add_pair (worker, bloom, "arg0-dot-prefix", element->value);
1377 case MATCH_ELEMENT_DESTINATION:
1378 case MATCH_ELEMENT_EAVESDROP:
1383 size += KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, data64) + worker->bloom_size);
1384 cmd_match = g_alloca0 (size);
1385 cmd_match->size = size;
1386 cmd_match->cookie = cookie;
1388 item = cmd_match->items;
1389 item->size = G_STRUCT_OFFSET(struct kdbus_item, data64) + worker->bloom_size;
1390 item->type = KDBUS_ITEM_BLOOM_MASK;
1391 memcpy(item->data64, bloom, worker->bloom_size);
1392 item = KDBUS_ITEM_NEXT(item);
1394 if (src_id != KDBUS_MATCH_ID_ANY)
1396 item->size = G_STRUCT_OFFSET (struct kdbus_item, id) + sizeof(src_id);
1397 item->type = KDBUS_ITEM_ID;
1399 item = KDBUS_ITEM_NEXT(item);
1404 item->size = G_STRUCT_OFFSET (struct kdbus_item, str) + sender_len;
1405 item->type = KDBUS_ITEM_NAME;
1406 memcpy (item->str, sender_name, sender_len);
1409 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd_match);
1411 g_critical ("Error while adding a match: %d", cookie);
1418 * _g_kdbus_RemoveMatch:
1422 _g_kdbus_RemoveMatch (GKDBusWorker *worker,
1425 struct kdbus_cmd_match cmd_match = {};
1428 cmd_match.size = sizeof (cmd_match);
1429 cmd_match.cookie = cookie;
1431 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_REMOVE, &cmd_match);
1433 g_warning ("Error while removing a match: %d\n", (int) errno);
1438 * _g_kdbus_subscribe_name_acquired:
1442 _g_kdbus_subscribe_name_owner_changed (GKDBusWorker *worker,
1444 const gchar *old_name,
1445 const gchar *new_name,
1448 struct kdbus_item *item;
1449 struct kdbus_cmd_match *cmd_match;
1452 guint64 old_id = 0; /* XXX why? */
1453 guint64 new_id = KDBUS_MATCH_ID_ANY;
1455 len = strlen(name) + 1;
1456 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1457 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1458 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1460 cmd_match = g_alloca0 (size);
1461 cmd_match->size = size;
1462 cmd_match->cookie = cookie;
1463 item = cmd_match->items;
1465 if (old_name[0] == 0)
1467 old_id = KDBUS_MATCH_ID_ANY;
1471 if (g_dbus_is_unique_name(old_name))
1477 if (new_name[0] == 0)
1479 new_id = KDBUS_MATCH_ID_ANY;
1483 if (g_dbus_is_unique_name(new_name))
1489 cmd_match = g_alloca0 (size);
1490 cmd_match->size = size;
1491 cmd_match->cookie = cookie;
1492 item = cmd_match->items;
1494 /* KDBUS_ITEM_NAME_CHANGE */
1495 item->type = KDBUS_ITEM_NAME_CHANGE;
1496 item->name_change.old_id.id = old_id;
1497 item->name_change.new_id.id = new_id;
1498 memcpy(item->name_change.name, name, len);
1499 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1500 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1501 item = KDBUS_ITEM_NEXT(item);
1503 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd_match);
1505 g_warning ("ERROR - %d\n", (int) errno);
1510 * _g_kdbus_subscribe_name_acquired:
1514 _g_kdbus_subscribe_name_acquired (GKDBusWorker *worker,
1517 struct kdbus_item *item;
1518 struct kdbus_cmd_match *cmd_match;
1523 len = strlen(name) + 1;
1524 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1525 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1526 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1528 cookie = 0xbeefbeefbeefbeef;
1529 cmd_match = g_alloca0 (size);
1530 cmd_match->size = size;
1531 cmd_match->cookie = cookie;
1532 item = cmd_match->items;
1534 /* KDBUS_ITEM_NAME_ADD */
1535 item->type = KDBUS_ITEM_NAME_ADD;
1536 item->name_change.old_id.id = KDBUS_MATCH_ID_ANY;
1537 item->name_change.new_id.id = worker->unique_id;
1538 memcpy(item->name_change.name, name, len);
1539 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1540 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1541 item = KDBUS_ITEM_NEXT(item);
1543 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd_match);
1545 g_warning ("ERROR - %d\n", (int) errno);
1547 _g_kdbus_subscribe_name_owner_changed (worker, name, "", worker->unique_name, cookie);
1552 * _g_kdbus_subscribe_name_lost:
1556 _g_kdbus_subscribe_name_lost (GKDBusWorker *worker,
1559 struct kdbus_item *item;
1560 struct kdbus_cmd_match *cmd_match;
1565 len = strlen(name) + 1;
1566 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1567 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1568 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1570 cookie = 0xdeafdeafdeafdeaf;
1571 cmd_match = g_alloca0 (size);
1572 cmd_match->size = size;
1573 cmd_match->cookie = cookie;
1574 item = cmd_match->items;
1576 /* KDBUS_ITEM_NAME_REMOVE */
1577 item->type = KDBUS_ITEM_NAME_REMOVE;
1578 item->name_change.old_id.id = worker->unique_id;
1579 item->name_change.new_id.id = KDBUS_MATCH_ID_ANY;
1580 memcpy(item->name_change.name, name, len);
1581 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1582 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1583 item = KDBUS_ITEM_NEXT(item);
1585 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd_match);
1587 g_warning ("ERROR - %d\n", (int) errno);
1589 _g_kdbus_subscribe_name_owner_changed (worker, name, worker->unique_name, "", cookie);
1594 * _g_kdbus_unsubscribe_name_acquired:
1598 _g_kdbus_unsubscribe_name_acquired (GKDBusWorker *worker)
1602 cookie = 0xbeefbeefbeefbeef;
1603 _g_kdbus_RemoveMatch (worker, cookie);
1608 * _g_kdbus_unsubscribe_name_lost:
1612 _g_kdbus_unsubscribe_name_lost (GKDBusWorker *worker)
1616 cookie = 0xdeafdeafdeafdeaf;
1617 _g_kdbus_RemoveMatch (worker, cookie);
1622 * g_kdbus_append_payload_bloom:
1625 static struct kdbus_bloom_filter *
1626 g_kdbus_append_bloom (struct kdbus_item **item,
1629 struct kdbus_item *bloom_item;
1631 bloom_item = KDBUS_ALIGN8_PTR(*item);
1632 bloom_item->size = G_STRUCT_OFFSET (struct kdbus_item, bloom_filter) +
1633 G_STRUCT_OFFSET (struct kdbus_bloom_filter, data) +
1636 bloom_item->type = KDBUS_ITEM_BLOOM_FILTER;
1638 *item = KDBUS_ITEM_NEXT(bloom_item);
1639 return &bloom_item->bloom_filter;
1644 * g_kdbus_setup_bloom:
1645 * Based on bus-bloom.c from systemd
1646 * http://cgit.freedesktop.org/systemd/systemd/tree/src/libsystemd/sd-bus/bus-bloom.c
1649 g_kdbus_setup_bloom (GKDBusWorker *worker,
1650 GDBusMessage *dbus_msg,
1651 struct kdbus_bloom_filter *bloom_filter)
1655 const gchar *message_type;
1656 const gchar *interface;
1657 const gchar *member;
1662 body = g_dbus_message_get_body (dbus_msg);
1663 message_type = _g_dbus_enum_to_string (G_TYPE_DBUS_MESSAGE_TYPE, g_dbus_message_get_message_type (dbus_msg));
1664 interface = g_dbus_message_get_interface (dbus_msg);
1665 member = g_dbus_message_get_member (dbus_msg);
1666 path = g_dbus_message_get_path (dbus_msg);
1668 bloom_data = bloom_filter->data;
1669 memset (bloom_data, 0, worker->bloom_size);
1670 bloom_filter->generation = 0;
1672 g_kdbus_bloom_add_pair(worker, bloom_data, "message-type", message_type);
1675 g_kdbus_bloom_add_pair(worker, bloom_data, "interface", interface);
1678 g_kdbus_bloom_add_pair(worker, bloom_data, "member", member);
1682 g_kdbus_bloom_add_pair(worker, bloom_data, "path", path);
1683 g_kdbus_bloom_add_pair(worker, bloom_data, "path-slash-prefix", path);
1684 g_kdbus_bloom_add_prefixes(worker, bloom_data, "path-slash-prefix", path, '/');
1689 const GVariantType *body_type;
1690 const GVariantType *arg_type;
1693 body_type = g_variant_get_type (body);
1695 for (arg_type = g_variant_type_first (body_type), cnt = 0;
1697 arg_type = g_variant_type_next (arg_type), cnt++)
1699 gchar type_char = g_variant_type_peek_string (arg_type)[0];
1700 gchar buf[sizeof("arg")-1 + 2 + sizeof("-slash-prefix")];
1705 if (type_char != 's' && type_char != 'o')
1706 /* XXX: kdbus docs say "stop after first non-string" but I
1707 * think they're wrong (vs. dbus-1 compat)...
1711 child = g_variant_get_child_value (body, cnt);
1712 str = g_variant_get_string (child, NULL);
1714 e = stpcpy(buf, "arg");
1716 *(e++) = '0' + (char) cnt;
1719 *(e++) = '0' + (char) (cnt / 10);
1720 *(e++) = '0' + (char) (cnt % 10);
1723 /* We add this one for both strings and object paths */
1724 strcpy(e, "-slash-prefix");
1725 g_kdbus_bloom_add_prefixes(worker, bloom_data, buf, str, '/');
1727 /* But the others are only for strings */
1728 if (type_char == 's')
1730 strcpy(e, "-dot-prefix");
1731 g_kdbus_bloom_add_prefixes(worker, bloom_data, buf, str, '.');
1734 g_kdbus_bloom_add_pair(worker, bloom_data, buf, str);
1737 g_variant_unref (child);
1744 * TODO: g_kdbus_NameOwnerChanged_generate, g_kdbus_KernelMethodError_generate
1748 * g_kdbus_decode_kernel_msg:
1752 g_kdbus_decode_kernel_msg (GKDBusWorker *worker,
1753 struct kdbus_msg *msg)
1755 struct kdbus_item *item = NULL;
1757 KDBUS_ITEM_FOREACH(item, msg, items)
1761 case KDBUS_ITEM_ID_ADD:
1762 case KDBUS_ITEM_ID_REMOVE:
1763 case KDBUS_ITEM_NAME_ADD:
1764 case KDBUS_ITEM_NAME_REMOVE:
1765 case KDBUS_ITEM_NAME_CHANGE:
1766 //size = g_kdbus_NameOwnerChanged_generate (worker, item);
1767 g_error ("'NameOwnerChanged'");
1770 case KDBUS_ITEM_REPLY_TIMEOUT:
1771 case KDBUS_ITEM_REPLY_DEAD:
1772 //size = g_kdbus_KernelMethodError_generate (worker, item);
1773 g_error ("'KernelMethodError'");
1777 g_warning ("Unknown field in kernel message - %lld", item->type);
1782 /* Override information from the user header with data from the kernel */
1783 g_string_printf (worker->msg_sender, "org.freedesktop.DBus");
1785 /* for destination */
1786 if (worker->kmsg->dst_id == KDBUS_DST_ID_BROADCAST)
1787 /* for broadcast messages we don't have to set destination */
1789 else if (worker->kmsg->dst_id == KDBUS_DST_ID_NAME)
1790 g_string_printf (worker->msg_destination, ":1.%" G_GUINT64_FORMAT, (guint64) worker->unique_id);
1792 g_string_printf (worker->msg_destination, ":1.%" G_GUINT64_FORMAT, (guint64) worker->kmsg->dst_id);
1800 * g_kdbus_decode_dbus_msg:
1803 static GDBusMessage *
1804 g_kdbus_decode_dbus_msg (GKDBusWorker *worker,
1805 struct kdbus_msg *msg)
1807 GDBusMessage *message;
1808 struct kdbus_item *item;
1809 gssize data_size = 0;
1810 GArray *body_vectors;
1816 GVariantIter *fields_iter;
1817 guint8 endianness, type, flags, version;
1823 message = g_dbus_message_new ();
1825 body_vectors = g_array_new (FALSE, FALSE, sizeof (GVariantVector));
1827 tmp = g_strdup_printf (":1.%"G_GUINT64_FORMAT, (guint64) msg->src_id);
1828 g_dbus_message_set_sender (message, tmp);
1834 KDBUS_ITEM_FOREACH(item, msg, items)
1836 if (item->size <= KDBUS_ITEM_HEADER_SIZE)
1837 g_error("[KDBUS] %llu bytes - invalid data record\n", item->size);
1839 data_size = item->size - KDBUS_ITEM_HEADER_SIZE;
1843 /* KDBUS_ITEM_DST_NAME */
1844 case KDBUS_ITEM_DST_NAME:
1845 /* Classic D-Bus doesn't make this known to the receiver, so
1846 * we don't do it here either (for compatibility with the
1851 /* KDBUS_ITEM_PALOAD_OFF */
1852 case KDBUS_ITEM_PAYLOAD_OFF:
1854 GVariantVector vector;
1857 /* We want to make sure the bytes are aligned the same as
1858 * they would be if they appeared in a contiguously
1859 * allocated chunk of aligned memory.
1861 * We decide what the alignment 'should' be by consulting
1862 * body_size, which has been tracking the total size of the
1863 * message up to this point.
1865 * We then play around with the pointer by removing as many
1866 * bytes as required to get it to the proper alignment (and
1867 * copy extra bytes accordingly). This means that we will
1868 * grab some extra data in the 'bytes', but it won't be
1869 * shared with GVariant (which means there is no chance of
1870 * it being accidentally retransmitted).
1872 * The kernel does the same thing, so make sure we get the
1873 * expected result. Because of the kernel doing the same,
1874 * the result is that we will always be rounding-down to a
1875 * multiple of 8 for the pointer, which means that the
1876 * pointer will always be valid, assuming the original
1879 * We could fix this with a new GBytes constructor that took
1880 * 'flavour' as a parameter, but it's not worth it...
1882 flavour = body_size & 7;
1883 g_assert ((item->vec.offset & 7) == flavour);
1885 vector.gbytes = g_bytes_new (((guchar *) worker->kdbus_buffer) + item->vec.offset - flavour, item->vec.size + flavour);
1886 vector.data.pointer = g_bytes_get_data (vector.gbytes, NULL);
1887 vector.data.pointer += flavour;
1888 vector.size = item->vec.size;
1890 g_array_append_val (body_vectors, vector);
1891 body_size += vector.size;
1895 /* KDBUS_ITEM_PAYLOAD_MEMFD */
1896 case KDBUS_ITEM_PAYLOAD_MEMFD:
1898 GVariantVector vector;
1902 vector.gbytes = g_bytes_new_take_zero_copy_fd (item->memfd.fd);
1903 data = g_bytes_get_data (vector.gbytes, &size);
1905 g_assert (item->memfd.start + item->memfd.size <= size);
1907 vector.data.pointer = data + item->memfd.start;
1908 vector.size = item->memfd.size;
1910 g_array_append_val (body_vectors, vector);
1911 body_size += vector.size;
1915 /* KDBUS_ITEM_FDS */
1916 case KDBUS_ITEM_FDS:
1918 GUnixFDList *fd_list;
1920 fd_list = g_unix_fd_list_new_from_array (item->fds, data_size / sizeof (int));
1921 g_dbus_message_set_unix_fd_list (message, fd_list);
1922 g_object_unref (fd_list);
1926 /* All of the following items, like CMDLINE,
1927 CGROUP, etc. need some GDBUS API extensions and
1928 should be implemented in the future */
1929 case KDBUS_ITEM_TIMESTAMP:
1931 g_print ("time: seq %llu mon %llu real %llu\n",
1932 item->timestamp.seqnum, item->timestamp.monotonic_ns, item->timestamp.realtime_ns);
1933 //g_dbus_message_set_timestamp (message, item->timestamp.monotonic_ns / 1000);
1934 //g_dbus_message_set_serial (message, item->timestamp.seqnum);
1938 case KDBUS_ITEM_CREDS:
1940 g_print ("creds: u%u eu %u su%u fsu%u g%u eg%u sg%u fsg%u\n",
1941 item->creds.uid, item->creds.euid, item->creds.suid, item->creds.fsuid,
1942 item->creds.gid, item->creds.egid, item->creds.sgid, item->creds.fsgid);
1946 case KDBUS_ITEM_PIDS:
1947 case KDBUS_ITEM_PID_COMM:
1948 case KDBUS_ITEM_TID_COMM:
1949 case KDBUS_ITEM_EXE:
1950 case KDBUS_ITEM_CMDLINE:
1951 case KDBUS_ITEM_CGROUP:
1952 case KDBUS_ITEM_AUDIT:
1953 case KDBUS_ITEM_CAPS:
1954 case KDBUS_ITEM_SECLABEL:
1955 case KDBUS_ITEM_CONN_DESCRIPTION:
1956 case KDBUS_ITEM_AUXGROUPS:
1957 case KDBUS_ITEM_OWNED_NAME:
1958 case KDBUS_ITEM_NAME:
1959 g_print ("unhandled %04x\n", (int) item->type);
1963 g_error ("[KDBUS] DBUS_PAYLOAD: Unknown filed - %lld", item->type);
1968 body = GLIB_PRIVATE_CALL(g_variant_from_vectors) (G_VARIANT_TYPE ("((yyyyuta{tv})v)"),
1969 (GVariantVector *) body_vectors->data,
1970 body_vectors->len, body_size, FALSE);
1973 for (i = 0; i < body_vectors->len; i++)
1974 g_bytes_unref (g_array_index (body_vectors, GVariantVector, i).gbytes);
1976 g_array_free (body_vectors, TRUE);
1978 parts[0] = g_variant_get_child_value (body, 0);
1979 parts[1] = g_variant_get_child_value (body, 1);
1980 g_variant_unref (body);
1982 body = g_variant_get_variant (parts[1]);
1983 g_variant_unref (parts[1]);
1984 g_dbus_message_set_body (message, body);
1985 g_variant_unref (body);
1987 g_variant_get (parts[0], "(yyyyuta{tv})", &endianness, &type, &flags, &version, NULL, &serial, &fields_iter);
1988 g_variant_unref (parts[0]);
1990 while (g_variant_iter_loop (fields_iter, "{tv}", &key, &value))
1991 g_dbus_message_set_header (message, key, value);
1993 g_dbus_message_set_flags (message, flags);
1994 g_dbus_message_set_serial (message, serial);
1995 g_dbus_message_set_message_type (message, type);
1997 g_print ("Received:\n%s\n", g_dbus_message_print (message, 2));
1999 (* worker->message_received_callback) (message, worker->user_data);
2001 g_object_unref (message);
2012 _g_kdbus_receive (GKDBusWorker *kdbus,
2013 GCancellable *cancellable,
2016 struct kdbus_cmd_recv recv;
2017 struct kdbus_msg *msg;
2019 memset (&recv, 0, sizeof recv);
2020 recv.size = sizeof (recv);
2022 if (g_cancellable_set_error_if_cancelled (cancellable, error))
2026 if (ioctl(kdbus->fd, KDBUS_CMD_RECV, &recv) < 0)
2031 if (errno == EAGAIN)
2034 g_warning ("in holding pattern over %d %d\n", kdbus->fd, errno);
2038 g_set_error (error, G_IO_ERROR,
2039 g_io_error_from_errno (errno),
2040 _("Error while receiving message: %s"),
2041 g_strerror (errno));
2045 g_print ("but sometimes that's okay\n");
2047 msg = (struct kdbus_msg *)((guint8 *)kdbus->kdbus_buffer + recv.reply.offset);
2049 if (msg->payload_type == KDBUS_PAYLOAD_DBUS)
2050 g_kdbus_decode_dbus_msg (kdbus, msg);
2051 else if (msg->payload_type == KDBUS_PAYLOAD_KERNEL)
2052 g_kdbus_decode_kernel_msg (kdbus, msg);
2057 G_DBUS_ERROR_FAILED,
2058 _("Received unknown payload type"));
2062 ioctl(kdbus->fd, KDBUS_CMD_FREE, &recv.reply.offset);
2068 g_kdbus_msg_append_item (struct kdbus_msg *msg,
2073 struct kdbus_item *item;
2076 item_size = size + G_STRUCT_OFFSET(struct kdbus_item, data);
2078 if (msg->size + item_size > KDBUS_MSG_MAX_SIZE)
2082 msg->size += (-msg->size) & 7;
2083 item = (struct kdbus_item *) ((guchar *) msg + msg->size);
2085 item->size = item_size;
2086 memcpy (item->data, data, size);
2088 msg->size += item_size;
2094 g_kdbus_msg_append_payload_vec (struct kdbus_msg *msg,
2098 struct kdbus_vec vec = {
2100 .address = (gsize) data
2103 return g_kdbus_msg_append_item (msg, KDBUS_ITEM_PAYLOAD_VEC, &vec, sizeof vec);
2107 g_kdbus_msg_append_payload_memfd (struct kdbus_msg *msg,
2112 struct kdbus_memfd mfd = {
2118 return g_kdbus_msg_append_item (msg, KDBUS_ITEM_PAYLOAD_MEMFD, &mfd, sizeof mfd);
2122 #include "dbusheader.h"
2124 void dump_header (gconstpointer data, gsize size) ;
2126 dump_header (gconstpointer data,
2129 GDBusMessageHeaderFieldsIterator iter;
2130 GDBusMessageHeader header;
2132 header = g_dbus_message_header_new (data, size);
2133 g_print ("header e/%c t/%u f/x%x v/%u s/%"G_GUINT64_FORMAT"\n",
2134 g_dbus_message_header_get_endian (header),
2135 g_dbus_message_header_get_type (header),
2136 g_dbus_message_header_get_flags (header),
2137 g_dbus_message_header_get_version (header),
2138 g_dbus_message_header_get_serial (header));
2140 iter = g_dbus_message_header_iterate_fields (header);
2142 while (g_dbus_message_header_fields_iterator_next (&iter))
2144 const gchar *string;
2148 key = g_dbus_message_header_fields_iterator_get_key (iter);
2152 case G_DBUS_MESSAGE_HEADER_FIELD_PATH:
2153 if (g_dbus_message_header_fields_iterator_get_value_as_object_path (iter, &string))
2154 g_print (" path: %s\n", string);
2156 g_print (" path: <<invalid string>>\n");
2159 case G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE:
2160 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2161 g_print (" interface: %s\n", string);
2163 g_print (" interface: <<invalid string>>\n");
2166 case G_DBUS_MESSAGE_HEADER_FIELD_MEMBER:
2167 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2168 g_print (" member: %s\n", string);
2170 g_print (" member: <<invalid string>>\n");
2173 case G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME:
2174 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2175 g_print (" error: %s\n", string);
2177 g_print (" error: <<invalid string>>\n");
2180 case G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL:
2181 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2182 g_print (" serial: %s\n", string);
2184 g_print (" serial: <<invalid string>>\n");
2187 case G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION:
2188 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2189 g_print (" destination: %s\n", string);
2191 g_print (" destination: <<invalid string>>\n");
2194 case G_DBUS_MESSAGE_HEADER_FIELD_SENDER:
2195 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2196 g_print (" sender: %s\n", string);
2198 g_print (" sender: <<invalid string>>\n");
2202 g_print ("unknown field code %"G_GUINT64_FORMAT"\n", key);
2203 g_assert_not_reached ();
2214 * Returns: size of data sent or -1 when error
2217 _g_kdbus_send (GKDBusWorker *kdbus,
2218 GDBusMessage *message,
2221 struct kdbus_msg *msg = alloca (KDBUS_MSG_MAX_SIZE);
2222 GVariantVectors body_vectors;
2223 struct kdbus_cmd_send send;
2225 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), -1);
2227 /* fill in as we go... */
2228 memset (msg, 0, sizeof (struct kdbus_msg));
2229 msg->size = sizeof (struct kdbus_msg);
2230 msg->payload_type = KDBUS_PAYLOAD_DBUS;
2231 msg->src_id = kdbus->unique_id;
2232 msg->cookie = g_dbus_message_get_serial(message);
2234 /* Message destination */
2236 const gchar *dst_name;
2238 dst_name = g_dbus_message_get_destination (message);
2240 if (dst_name != NULL)
2242 if (g_dbus_is_unique_name (dst_name))
2244 if (dst_name[1] != '1' || dst_name[2] != '.')
2246 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_NAME_HAS_NO_OWNER,
2247 "Invalid unique D-Bus name '%s'", dst_name);
2251 /* We already know that it passes the checks for unique
2252 * names, so no need to perform error checking on strtoull.
2254 msg->dst_id = strtoull (dst_name + 3, NULL, 10);
2259 g_kdbus_msg_append_item (msg, KDBUS_ITEM_DST_NAME, dst_name, strlen (dst_name) + 1);
2260 msg->dst_id = KDBUS_DST_ID_NAME;
2264 msg->dst_id = KDBUS_DST_ID_BROADCAST;
2267 /* File descriptors */
2269 GUnixFDList *fd_list;
2271 fd_list = g_dbus_message_get_unix_fd_list (message);
2273 if (fd_list != NULL)
2278 fds = g_unix_fd_list_peek_fds (fd_list, &n_fds);
2281 g_kdbus_msg_append_item (msg, KDBUS_ITEM_FDS, fds, sizeof (gint) * n_fds);
2287 struct dbus_fixed_header fh;
2288 GHashTableIter header_iter;
2289 GVariantBuilder builder;
2290 gpointer key, value;
2294 fh.endian = (G_BYTE_ORDER == G_LITTLE_ENDIAN) ? 'l': 'B';
2295 fh.type = g_dbus_message_get_message_type (message);
2296 fh.flags = g_dbus_message_get_flags (message);
2299 fh.serial = g_dbus_message_get_serial (message);
2300 parts[0] = g_variant_new_from_data (DBUS_FIXED_HEADER_TYPE, &fh, sizeof fh, TRUE, NULL, NULL);
2302 g_dbus_message_init_header_iter (message, &header_iter);
2303 g_variant_builder_init (&builder, DBUS_EXTENDED_HEADER_TYPE);
2305 /* We set the sender field to the correct value for ourselves */
2306 g_variant_builder_add (&builder, "{tv}",
2307 (guint64) G_DBUS_MESSAGE_HEADER_FIELD_SENDER,
2308 g_variant_new_printf (":1.%"G_GUINT64_FORMAT, kdbus->unique_id));
2310 while (g_hash_table_iter_next (&header_iter, &key, &value))
2312 guint64 key_int = (gsize) key;
2316 /* These are the normal header fields that get passed
2319 case G_DBUS_MESSAGE_HEADER_FIELD_PATH:
2320 case G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE:
2321 case G_DBUS_MESSAGE_HEADER_FIELD_MEMBER:
2322 case G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME:
2323 case G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL:
2324 case G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION:
2325 g_variant_builder_add (&builder, "{tv}", key_int, value);
2326 /* This is a little bit gross.
2328 * We must send the header part of the message in a single
2329 * vector as per kdbus rules, but the GVariant serialiser
2330 * code will split any item >= 128 bytes into its own
2331 * vector to save the copy.
2333 * No header field should be that big anyway... right?
2335 g_assert_cmpint (g_variant_get_size (value), <, 128);
2338 /* We send this one unconditionally, but set it ourselves */
2339 case G_DBUS_MESSAGE_HEADER_FIELD_SENDER:
2342 /* We don't send these at all in GVariant format */
2343 case G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE:
2344 case G_DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS:
2348 g_assert_not_reached ();
2351 parts[1] = g_variant_builder_end (&builder);
2353 body = g_dbus_message_get_body (message);
2355 body = g_variant_new ("()");
2356 parts[2] = g_variant_new_variant (body);
2358 body = g_variant_ref_sink (g_variant_new_tuple (parts, G_N_ELEMENTS (parts)));
2359 GLIB_PRIVATE_CALL(g_variant_to_vectors) (body, &body_vectors);
2361 /* Sanity check to make sure the header is really contiguous:
2363 * - we must have at least one vector in the output
2364 * - the first vector must completely contain at least the header
2366 g_assert_cmpint (body_vectors.vectors->len, >, 0);
2367 g_assert_cmpint (g_array_index (body_vectors.vectors, GVariantVector, 0).size, >=,
2368 g_variant_get_size (parts[0]) + g_variant_get_size (parts[1]));
2370 g_variant_unref (body);
2376 for (i = 0; i < body_vectors.vectors->len; i++)
2378 GVariantVector vector = g_array_index (body_vectors.vectors, GVariantVector, i);
2384 fd = g_bytes_get_zero_copy_fd (vector.gbytes);
2388 const guchar *bytes_data;
2391 bytes_data = g_bytes_get_data (vector.gbytes, &bytes_size);
2393 if (bytes_data <= vector.data.pointer && vector.data.pointer + vector.size <= bytes_data + bytes_size)
2395 if (!g_kdbus_msg_append_payload_memfd (msg, fd, vector.data.pointer - bytes_data, vector.size))
2400 if (!g_kdbus_msg_append_payload_vec (msg, vector.data.pointer, vector.size))
2406 if (!g_kdbus_msg_append_payload_vec (msg, vector.data.pointer, vector.size))
2411 if (!g_kdbus_msg_append_payload_vec (msg, body_vectors.extra_bytes->data + vector.data.offset, vector.size))
2419 msg->flags = ((g_dbus_message_get_flags (message) & G_DBUS_MESSAGE_FLAGS_NO_REPLY_EXPECTED) ? 0 : KDBUS_MSG_EXPECT_REPLY) |
2420 ((g_dbus_message_get_flags (message) & G_DBUS_MESSAGE_FLAGS_NO_AUTO_START) ? KDBUS_MSG_NO_AUTO_START : 0);
2422 if ((msg->flags) & KDBUS_MSG_EXPECT_REPLY)
2423 msg->timeout_ns = 1000LU * g_get_monotonic_time() + KDBUS_TIMEOUT_NS;
2425 msg->cookie_reply = g_dbus_message_get_reply_serial(message);
2429 if (dst_id == KDBUS_DST_ID_BROADCAST)
2431 struct kdbus_bloom_filter *bloom_filter;
2433 bloom_filter = g_kdbus_append_bloom (&item, kdbus->bloom_size);
2434 g_kdbus_setup_bloom (kdbus, message, bloom_filter);
2438 send.size = sizeof (send);
2440 send.msg_address = (gsize) msg;
2446 if (ioctl(kdbus->fd, KDBUS_CMD_SEND, &send))
2449 GString *error_name;
2450 error_name = g_string_new (NULL);
2454 g_string_free (error_name,TRUE);
2457 else if (errno == ENXIO)
2459 g_string_printf (error_name, "Name %s does not exist", g_dbus_message_get_destination(dbus_msg));
2460 g_kdbus_generate_local_error (worker,
2462 g_variant_new ("(s)",error_name->str),
2463 G_DBUS_ERROR_SERVICE_UNKNOWN);
2464 g_string_free (error_name,TRUE);
2467 else if ((errno == ESRCH) || (errno == EADDRNOTAVAIL))
2469 if (kmsg->flags & KDBUS_MSG_FLAGS_NO_AUTO_START)
2471 g_string_printf (error_name, "Name %s does not exist", g_dbus_message_get_destination(dbus_msg));
2472 g_kdbus_generate_local_error (worker,
2474 g_variant_new ("(s)",error_name->str),
2475 G_DBUS_ERROR_SERVICE_UNKNOWN);
2476 g_string_free (error_name,TRUE);
2481 g_string_printf (error_name, "The name %s was not provided by any .service files", g_dbus_message_get_destination(dbus_msg));
2482 g_kdbus_generate_local_error (worker,
2484 g_variant_new ("(s)",error_name->str),
2485 G_DBUS_ERROR_SERVICE_UNKNOWN);
2486 g_string_free (error_name,TRUE);
2491 g_print ("[KDBUS] ioctl error sending kdbus message:%d (%m)\n",errno);
2492 g_set_error (error, G_IO_ERROR, g_io_error_from_errno(errno), _("Error sending message - KDBUS_CMD_MSG_SEND error"));
2494 perror("ioctl send");
2495 g_error ("IOCTL SEND: %d\n",errno);
2502 /* We end up here if:
2503 * - too many kdbus_items
2504 * - too large kdbus_msg size
2505 * - too much vector data
2507 * We need to compact the message before sending it.
2509 g_assert_not_reached ();
2513 g_kdbus_worker_new (const gchar *address,
2516 GKDBusWorker *worker;
2518 worker = g_object_new (G_TYPE_KDBUS_WORKER, NULL);
2519 if (!_g_kdbus_open (worker, address, error))
2521 g_object_unref (worker);
2529 g_kdbus_worker_associate (GKDBusWorker *worker,
2530 GDBusCapabilityFlags capabilities,
2531 GDBusWorkerMessageReceivedCallback message_received_callback,
2532 GDBusWorkerMessageAboutToBeSentCallback message_about_to_be_sent_callback,
2533 GDBusWorkerDisconnectedCallback disconnected_callback,
2536 worker->capabilities = capabilities;
2537 worker->message_received_callback = message_received_callback;
2538 worker->message_about_to_be_sent_callback = message_about_to_be_sent_callback;
2539 worker->disconnected_callback = disconnected_callback;
2540 worker->user_data = user_data;
2544 g_kdbus_worker_unfreeze (GKDBusWorker *worker)
2548 if (worker->source != NULL)
2551 worker->context = g_main_context_ref_thread_default ();
2552 worker->source = g_unix_fd_source_new (worker->fd, G_IO_IN);
2554 g_source_set_callback (worker->source, (GSourceFunc) kdbus_ready, worker, NULL);
2555 name = g_strdup_printf ("kdbus worker");
2556 g_source_set_name (worker->source, name);
2559 g_source_attach (worker->source, worker->context);
2563 g_kdbus_worker_send_message (GKDBusWorker *worker,
2564 GDBusMessage *message,
2567 return _g_kdbus_send (worker, message, error);
2571 g_kdbus_worker_stop (GKDBusWorker *worker)
2576 g_kdbus_worker_flush_sync (GKDBusWorker *worker)
2581 g_kdbus_worker_close (GKDBusWorker *worker,
2582 GCancellable *cancellable,
2583 GSimpleAsyncResult *result)