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_MSG_MAX_SIZE 8192
55 #define KDBUS_TIMEOUT_NS 2000000000LU
56 #define KDBUS_POOL_SIZE (16 * 1024LU * 1024LU)
57 #define KDBUS_ALIGN8(l) (((l) + 7) & ~7)
58 #define KDBUS_ALIGN8_PTR(p) ((void*) (uintptr_t)(p))
60 #define KDBUS_ITEM_HEADER_SIZE G_STRUCT_OFFSET(struct kdbus_item, data)
61 #define KDBUS_ITEM_SIZE(s) KDBUS_ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
63 #define KDBUS_ITEM_NEXT(item) \
64 (typeof(item))(((guint8 *)item) + KDBUS_ALIGN8((item)->size))
65 #define KDBUS_ITEM_FOREACH(item, head, first) \
66 for (item = (head)->first; \
67 (guint8 *)(item) < (guint8 *)(head) + (head)->size; \
68 item = KDBUS_ITEM_NEXT(item))
69 #define KDBUS_FOREACH(iter, first, _size) \
70 for (iter = (first); \
71 ((guint8 *)(iter) < (guint8 *)(first) + (_size)) && \
72 ((guint8 *)(iter) >= (guint8 *)(first)); \
73 iter = (void*)(((guint8 *)iter) + KDBUS_ALIGN8((iter)->size)))
75 #define g_alloca0(x) memset(g_alloca(x), '\0', (x))
77 struct dbus_fixed_header {
86 #define DBUS_FIXED_HEADER_TYPE ((const GVariantType *) "(yyyyut)")
87 #define DBUS_EXTENDED_HEADER_TYPE ((const GVariantType *) "a{tv}")
88 #define DBUS_MESSAGE_TYPE ((const GVariantType *) "((yyyyut)a{tv}v)")
91 * Macros for SipHash algorithm
94 #define ROTL(x,b) (guint64)( ((x) << (b)) | ( (x) >> (64 - (b))) )
96 #define U32TO8_LE(p, v) \
97 (p)[0] = (guint8)((v) ); (p)[1] = (guint8)((v) >> 8); \
98 (p)[2] = (guint8)((v) >> 16); (p)[3] = (guint8)((v) >> 24);
100 #define U64TO8_LE(p, v) \
101 U32TO8_LE((p), (guint32)((v) )); \
102 U32TO8_LE((p) + 4, (guint32)((v) >> 32));
104 #define U8TO64_LE(p) \
105 (((guint64)((p)[0]) ) | \
106 ((guint64)((p)[1]) << 8) | \
107 ((guint64)((p)[2]) << 16) | \
108 ((guint64)((p)[3]) << 24) | \
109 ((guint64)((p)[4]) << 32) | \
110 ((guint64)((p)[5]) << 40) | \
111 ((guint64)((p)[6]) << 48) | \
112 ((guint64)((p)[7]) << 56))
116 v0 += v1; v1=ROTL(v1,13); v1 ^= v0; v0=ROTL(v0,32); \
117 v2 += v3; v3=ROTL(v3,16); v3 ^= v2; \
118 v0 += v3; v3=ROTL(v3,21); v3 ^= v0; \
119 v2 += v1; v1=ROTL(v1,17); v1 ^= v2; v2=ROTL(v2,32); \
126 G_BUS_CREDS_UNIQUE_NAME = 3,
127 G_BUS_CREDS_SELINUX_CONTEXT = 4
128 } GBusCredentialsFlags;
130 typedef GObjectClass GKDBusWorkerClass;
134 GObject parent_instance;
138 GMainContext *context;
147 guint64 attach_flags_send;
148 guint64 attach_flags_recv;
160 GDBusCapabilityFlags capabilities;
161 GDBusWorkerMessageReceivedCallback message_received_callback;
162 GDBusWorkerMessageAboutToBeSentCallback message_about_to_be_sent_callback;
163 GDBusWorkerDisconnectedCallback disconnected_callback;
167 static gssize _g_kdbus_receive (GKDBusWorker *kdbus,
168 GCancellable *cancellable,
171 G_DEFINE_TYPE (GKDBusWorker, g_kdbus_worker, G_TYPE_OBJECT)
173 /* Hash keys for bloom filters*/
174 const guint8 hash_keys[8][16] =
176 {0xb9,0x66,0x0b,0xf0,0x46,0x70,0x47,0xc1,0x88,0x75,0xc4,0x9c,0x54,0xb9,0xbd,0x15},
177 {0xaa,0xa1,0x54,0xa2,0xe0,0x71,0x4b,0x39,0xbf,0xe1,0xdd,0x2e,0x9f,0xc5,0x4a,0x3b},
178 {0x63,0xfd,0xae,0xbe,0xcd,0x82,0x48,0x12,0xa1,0x6e,0x41,0x26,0xcb,0xfa,0xa0,0xc8},
179 {0x23,0xbe,0x45,0x29,0x32,0xd2,0x46,0x2d,0x82,0x03,0x52,0x28,0xfe,0x37,0x17,0xf5},
180 {0x56,0x3b,0xbf,0xee,0x5a,0x4f,0x43,0x39,0xaf,0xaa,0x94,0x08,0xdf,0xf0,0xfc,0x10},
181 {0x31,0x80,0xc8,0x73,0xc7,0xea,0x46,0xd3,0xaa,0x25,0x75,0x0f,0x9e,0x4c,0x09,0x29},
182 {0x7d,0xf7,0x18,0x4b,0x7b,0xa4,0x44,0xd5,0x85,0x3c,0x06,0xe0,0x65,0x53,0x96,0x6d},
183 {0xf2,0x77,0xe9,0x6f,0x93,0xb5,0x4e,0x71,0x9a,0x0c,0x34,0x88,0x39,0x25,0xbf,0x35}
188 MATCH_ELEMENT_SENDER,
189 MATCH_ELEMENT_INTERFACE,
190 MATCH_ELEMENT_MEMBER,
192 MATCH_ELEMENT_PATH_NAMESPACE,
193 MATCH_ELEMENT_DESTINATION,
194 MATCH_ELEMENT_ARG0NAMESPACE,
195 MATCH_ELEMENT_EAVESDROP,
197 MATCH_ELEMENT_ARGNPATH,
200 /* MatchElement struct */
210 MatchElement *elements;
219 _g_siphash24 (guint8 out[8],
224 /* "somepseudorandomlygeneratedbytes" */
225 guint64 v0 = 0x736f6d6570736575ULL;
226 guint64 v1 = 0x646f72616e646f6dULL;
227 guint64 v2 = 0x6c7967656e657261ULL;
228 guint64 v3 = 0x7465646279746573ULL;
230 guint64 k0 = U8TO64_LE (k);
231 guint64 k1 = U8TO64_LE (k + 8);
233 const guint8 *in = _in;
234 const guint8 *end = in + inlen - (inlen % sizeof(guint64));
235 const int left = inlen & 7;
236 b = ((guint64) inlen) << 56;
242 for (; in != end; in += 8)
253 case 7: b |= ((guint64) in[6]) << 48;
254 case 6: b |= ((guint64) in[5]) << 40;
255 case 5: b |= ((guint64) in[4]) << 32;
256 case 4: b |= ((guint64) in[3]) << 24;
257 case 3: b |= ((guint64) in[2]) << 16;
258 case 2: b |= ((guint64) in[1]) << 8;
259 case 1: b |= ((guint64) in[0]); break;
273 b = v0 ^ v1 ^ v2 ^ v3;
283 is_key (const char *key_start, const char *key_end, char *value)
285 gsize len = strlen (value);
287 if (len != key_end - key_start)
290 return strncmp (key_start, value, len) == 0;
299 parse_key (MatchElement *element, const char *key_start, const char *key_end)
303 if (is_key (key_start, key_end, "type"))
305 element->type = MATCH_ELEMENT_TYPE;
307 else if (is_key (key_start, key_end, "sender"))
309 element->type = MATCH_ELEMENT_SENDER;
311 else if (is_key (key_start, key_end, "interface"))
313 element->type = MATCH_ELEMENT_INTERFACE;
315 else if (is_key (key_start, key_end, "member"))
317 element->type = MATCH_ELEMENT_MEMBER;
319 else if (is_key (key_start, key_end, "path"))
321 element->type = MATCH_ELEMENT_PATH;
323 else if (is_key (key_start, key_end, "path_namespace"))
325 element->type = MATCH_ELEMENT_PATH_NAMESPACE;
327 else if (is_key (key_start, key_end, "destination"))
329 element->type = MATCH_ELEMENT_DESTINATION;
331 else if (is_key (key_start, key_end, "arg0namespace"))
333 element->type = MATCH_ELEMENT_ARG0NAMESPACE;
335 else if (is_key (key_start, key_end, "eavesdrop"))
337 element->type = MATCH_ELEMENT_EAVESDROP;
339 else if (key_end - key_start > 3 && is_key (key_start, key_start + 3, "arg"))
341 const char *digits = key_start + 3;
342 const char *end_digits = digits;
344 while (end_digits < key_end && g_ascii_isdigit (*end_digits))
347 if (end_digits == key_end) /* argN */
349 element->type = MATCH_ELEMENT_ARGN;
350 element->arg = atoi (digits);
352 else if (is_key (end_digits, key_end, "path")) /* argNpath */
354 element->type = MATCH_ELEMENT_ARGNPATH;
355 element->arg = atoi (digits);
372 parse_value (MatchElement *element, const char *s)
377 value = g_string_new ("");
400 g_string_append_c (value, *s);
404 else if (quote_char == '\\')
406 /* \ only counts as an escape if escaping a quote mark */
408 g_string_append_c (value, '\\');
410 g_string_append_c (value, *s);
413 else /* quote_char == ' */
418 g_string_append_c (value, *s);
423 if (quote_char == '\\')
424 g_string_append_c (value, '\\');
425 else if (quote_char == '\'')
427 g_string_free (value, TRUE);
431 element->value = g_string_free (value, FALSE);
441 match_new (const char *str)
446 const char *key_start;
448 MatchElement element;
451 elements = g_array_new (TRUE, TRUE, sizeof (MatchElement));
457 memset (&element, 0, sizeof (element));
459 /* Skip initial whitespace */
460 while (*p && g_ascii_isspace (*p))
465 /* Read non-whitespace non-equals chars */
466 while (*p && *p != '=' && !g_ascii_isspace (*p))
471 /* Skip any whitespace after key */
472 while (*p && g_ascii_isspace (*p))
475 if (key_start == key_end)
476 continue; /* Allow trailing whitespace */
482 if (!parse_key (&element, key_start, key_end))
485 p = parse_value (&element, p);
489 g_array_append_val (elements, element);
492 match = g_new0 (Match, 1);
493 match->n_elements = elements->len;
494 match->elements = (MatchElement *)g_array_free (elements, FALSE);
499 for (i = 0; i < elements->len; i++)
500 g_free (g_array_index (elements, MatchElement, i).value);
501 g_array_free (elements, TRUE);
511 match_free (Match *match)
514 for (i = 0; i < match->n_elements; i++)
515 g_free (match->elements[i].value);
516 g_free (match->elements);
526 g_kdbus_worker_finalize (GObject *object)
528 GKDBusWorker *kdbus = G_KDBUS_WORKER (object);
530 if (kdbus->kdbus_buffer != NULL)
531 munmap (kdbus->kdbus_buffer, KDBUS_POOL_SIZE);
533 kdbus->kdbus_buffer = NULL;
535 if (kdbus->fd != -1 && !kdbus->closed)
536 _g_kdbus_close (kdbus);
538 G_OBJECT_CLASS (g_kdbus_worker_parent_class)->finalize (object);
542 g_kdbus_worker_class_init (GKDBusWorkerClass *class)
544 class->finalize = g_kdbus_worker_finalize;
548 g_kdbus_worker_init (GKDBusWorker *kdbus)
552 kdbus->unique_id = -1;
553 kdbus->unique_name = NULL;
555 kdbus->kdbus_buffer = NULL;
557 //kdbus->flags = 0; /* KDBUS_HELLO_ACCEPT_FD */
558 kdbus->flags = KDBUS_HELLO_ACCEPT_FD;
559 kdbus->attach_flags_send = _KDBUS_ATTACH_ALL;
560 kdbus->attach_flags_recv = _KDBUS_ATTACH_ALL;
564 kdbus_ready (gint fd,
565 GIOCondition condition,
568 GKDBusWorker *kdbus = user_data;
569 GError *error = NULL;
571 _g_kdbus_receive (kdbus, NULL, &error);
572 g_assert_no_error (error);
574 return G_SOURCE_CONTINUE;
578 _g_kdbus_open (GKDBusWorker *worker,
579 const gchar *address,
582 g_return_val_if_fail (G_IS_KDBUS_WORKER (worker), FALSE);
584 worker->fd = open(address, O_RDWR|O_NOCTTY|O_CLOEXEC);
587 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED, _("Can't open kdbus endpoint"));
591 worker->closed = FALSE;
602 g_kdbus_free_data (GKDBusWorker *kdbus,
605 struct kdbus_cmd_free cmd = {
612 ret = ioctl (kdbus->fd, KDBUS_CMD_FREE, &cmd);
621 * g_kdbus_translate_nameowner_flags:
625 g_kdbus_translate_nameowner_flags (GBusNameOwnerFlags flags,
626 guint64 *kdbus_flags)
632 if (flags & G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT)
633 new_flags |= KDBUS_NAME_ALLOW_REPLACEMENT;
635 if (flags & G_BUS_NAME_OWNER_FLAGS_REPLACE)
636 new_flags |= KDBUS_NAME_REPLACE_EXISTING;
638 if (!(flags & G_BUS_NAME_OWNER_FLAGS_DO_NOT_QUEUE))
639 new_flags |= KDBUS_NAME_QUEUE;
641 *kdbus_flags = new_flags;
650 _g_kdbus_close (GKDBusWorker *kdbus)
652 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), FALSE);
657 g_source_destroy (kdbus->source);
660 g_main_context_unref (kdbus->context);
661 kdbus->context = NULL;
666 kdbus->closed = TRUE;
670 * _g_kdbus_is_closed:
674 _g_kdbus_is_closed (GKDBusWorker *kdbus)
676 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), FALSE);
678 return kdbus->closed;
687 _g_kdbus_Hello (GKDBusWorker *worker,
690 struct kdbus_cmd_hello *cmd;
691 struct kdbus_bloom_parameter *bloom;
692 struct kdbus_item *item, *items;
695 size_t size, conn_name_size;
697 conn_name = "gdbus-kdbus";
698 conn_name_size = strlen (conn_name);
700 size = KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_cmd_hello, items)) +
701 KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, str) + conn_name_size + 1);
703 cmd = g_alloca0 (size);
704 cmd->flags = worker->flags;
705 cmd->attach_flags_send = worker->attach_flags_send;
706 cmd->attach_flags_recv = worker->attach_flags_recv;
708 cmd->pool_size = KDBUS_POOL_SIZE;
711 item->size = G_STRUCT_OFFSET (struct kdbus_item, str) + conn_name_size + 1;
712 item->type = KDBUS_ITEM_CONN_DESCRIPTION;
713 memcpy (item->str, conn_name, conn_name_size+1);
714 item = KDBUS_ITEM_NEXT (item);
716 if (ioctl(worker->fd, KDBUS_CMD_HELLO, cmd))
718 g_set_error (error, G_IO_ERROR,
719 g_io_error_from_errno (errno),
720 _("Failed to send HELLO: %s"),
725 worker->kdbus_buffer = mmap(NULL, KDBUS_POOL_SIZE, PROT_READ, MAP_SHARED, worker->fd, 0);
726 if (worker->kdbus_buffer == MAP_FAILED)
728 g_set_error (error, G_IO_ERROR,
729 g_io_error_from_errno (errno),
735 if (cmd->bus_flags > 0xFFFFFFFFULL)
737 g_set_error_literal (error,
740 _("Incompatible HELLO flags"));
744 memcpy (worker->bus_id, cmd->id128, 16);
746 worker->unique_id = cmd->id;
747 asprintf(&worker->unique_name, ":1.%llu", (unsigned long long) cmd->id);
749 /* read bloom filters parameters */
751 items = (void*)(worker->kdbus_buffer + cmd->offset);
752 KDBUS_FOREACH(item, items, cmd->items_size)
756 case KDBUS_ITEM_BLOOM_PARAMETER:
757 bloom = &item->bloom_parameter;
764 worker->bloom_size = (gsize) bloom->size;
765 worker->bloom_n_hash = (guint) bloom->n_hash;
768 return g_variant_new ("(s)", worker->unique_name);
773 * _g_kdbus_RequestName:
777 _g_kdbus_RequestName (GKDBusWorker *worker,
779 GBusNameOwnerFlags flags,
783 struct kdbus_cmd *cmd;
788 status = G_BUS_REQUEST_NAME_FLAGS_PRIMARY_OWNER;
790 if (!g_dbus_is_name (name))
794 G_DBUS_ERROR_INVALID_ARGS,
795 "Given bus name \"%s\" is not valid", name);
803 G_DBUS_ERROR_INVALID_ARGS,
804 "Cannot acquire a service starting with ':' such as \"%s\"", name);
808 g_kdbus_translate_nameowner_flags (flags, &kdbus_flags);
810 len = strlen(name) + 1;
811 size = G_STRUCT_OFFSET (struct kdbus_cmd, items) + KDBUS_ITEM_SIZE(len);
812 cmd = g_alloca0 (size);
814 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
815 cmd->items[0].type = KDBUS_ITEM_NAME;
816 cmd->flags = kdbus_flags;
817 memcpy (cmd->items[0].str, name, len);
819 ret = ioctl(worker->fd, KDBUS_CMD_NAME_ACQUIRE, cmd);
823 status = G_BUS_REQUEST_NAME_FLAGS_EXISTS;
824 else if (errno == EALREADY)
825 status = G_BUS_REQUEST_NAME_FLAGS_ALREADY_OWNER;
828 g_set_error (error, G_IO_ERROR,
829 g_io_error_from_errno (errno),
830 _("Error while acquiring name: %s"),
836 if (cmd->return_flags & KDBUS_NAME_IN_QUEUE)
837 status = G_BUS_REQUEST_NAME_FLAGS_IN_QUEUE;
839 result = g_variant_new ("(u)", status);
846 * _g_kdbus_ReleaseName:
850 _g_kdbus_ReleaseName (GKDBusWorker *worker,
855 struct kdbus_cmd *cmd;
859 status = G_BUS_RELEASE_NAME_FLAGS_RELEASED;
861 if (!g_dbus_is_name (name))
865 G_DBUS_ERROR_INVALID_ARGS,
866 "Given bus name \"%s\" is not valid", name);
874 G_DBUS_ERROR_INVALID_ARGS,
875 "Cannot release a service starting with ':' such as \"%s\"", name);
879 len = strlen(name) + 1;
880 size = G_STRUCT_OFFSET (struct kdbus_cmd, items) + KDBUS_ITEM_SIZE(len);
881 cmd = g_alloca0 (size);
883 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
884 cmd->items[0].type = KDBUS_ITEM_NAME;
885 memcpy (cmd->items[0].str, name, len);
887 ret = ioctl(worker->fd, KDBUS_CMD_NAME_RELEASE, cmd);
891 status = G_BUS_RELEASE_NAME_FLAGS_NON_EXISTENT;
892 else if (errno == EADDRINUSE)
893 status = G_BUS_RELEASE_NAME_FLAGS_NOT_OWNER;
896 g_set_error (error, G_IO_ERROR,
897 g_io_error_from_errno (errno),
898 _("Error while releasing name: %s"),
904 result = g_variant_new ("(u)", status);
915 _g_kdbus_GetBusId (GKDBusWorker *worker,
922 result_str = g_string_new (NULL);
924 for (cnt=0; cnt<16; cnt++)
925 g_string_append_printf (result_str, "%02x", worker->bus_id[cnt]);
927 result = g_variant_new ("(s)", result_str->str);
928 g_string_free (result_str, TRUE);
935 * _g_kdbus_GetListNames:
939 _g_kdbus_GetListNames (GKDBusWorker *worker,
940 guint list_name_type,
944 GVariantBuilder *builder;
945 struct kdbus_info *name_list, *name;
946 struct kdbus_cmd_list cmd = {
956 cmd.flags = KDBUS_LIST_ACTIVATORS; /* ListActivatableNames */
958 cmd.flags = KDBUS_LIST_UNIQUE | KDBUS_LIST_NAMES; /* ListNames */
960 ret = ioctl(worker->fd, KDBUS_CMD_LIST, &cmd);
966 _("Error listing names"));
970 name_list = (struct kdbus_info *) ((guint8 *) worker->kdbus_buffer + cmd.offset);
971 builder = g_variant_builder_new (G_VARIANT_TYPE ("as"));
973 KDBUS_FOREACH(name, name_list, cmd.list_size)
975 struct kdbus_item *item;
976 const gchar *item_name = "";
978 if ((cmd.flags & KDBUS_LIST_UNIQUE) && name->id != prev_id)
980 GString *unique_name;
982 unique_name = g_string_new (NULL);
983 g_string_printf (unique_name, ":1.%llu", name->id);
984 g_variant_builder_add (builder, "s", unique_name->str);
985 g_string_free (unique_name,TRUE);
989 KDBUS_ITEM_FOREACH(item, name, items)
990 if (item->type == KDBUS_ITEM_OWNED_NAME)
991 item_name = item->name.name;
993 if (g_dbus_is_name (item_name))
994 g_variant_builder_add (builder, "s", item_name);
997 result = g_variant_new ("(as)", builder);
998 g_variant_builder_unref (builder);
1000 g_kdbus_free_data (worker, cmd.offset);
1006 * _g_kdbus_NameHasOwner_internal:
1010 g_kdbus_NameHasOwner_internal (GKDBusWorker *worker,
1014 struct kdbus_cmd_info *cmd;
1018 if (g_dbus_is_unique_name(name))
1020 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items);
1021 cmd = g_alloca0 (size);
1022 cmd->id = g_ascii_strtoull (name+3, NULL, 10);
1026 len = strlen(name) + 1;
1027 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items) + KDBUS_ITEM_SIZE(len);
1028 cmd = g_alloca0 (size);
1029 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
1030 cmd->items[0].type = KDBUS_ITEM_NAME;
1031 memcpy (cmd->items[0].str, name, len);
1035 ret = ioctl(worker->fd, KDBUS_CMD_CONN_INFO, cmd);
1036 g_kdbus_free_data (worker, cmd->offset);
1046 * _g_kdbus_GetListQueuedOwners:
1050 _g_kdbus_GetListQueuedOwners (GKDBusWorker *worker,
1055 GVariantBuilder *builder;
1056 GString *unique_name;
1059 struct kdbus_info *name_list, *kname;
1060 struct kdbus_cmd_list cmd = {
1061 .size = sizeof(cmd),
1062 .flags = KDBUS_LIST_QUEUED
1065 if (!g_dbus_is_name (name))
1069 G_DBUS_ERROR_INVALID_ARGS,
1070 "Given bus name \"%s\" is not valid", name);
1074 if (!g_kdbus_NameHasOwner_internal (worker, name, error))
1078 G_DBUS_ERROR_NAME_HAS_NO_OWNER,
1079 "Could not get owner of name '%s': no such name", name);
1083 ret = ioctl(worker->fd, KDBUS_CMD_LIST, &cmd);
1088 G_DBUS_ERROR_FAILED,
1089 _("Error listing names"));
1093 name_list = (struct kdbus_info *) ((guint8 *) worker->kdbus_buffer + cmd.offset);
1095 unique_name = g_string_new (NULL);
1096 builder = g_variant_builder_new (G_VARIANT_TYPE ("as"));
1097 KDBUS_FOREACH(kname, name_list, cmd.list_size)
1099 struct kdbus_item *item;
1100 const char *item_name = "";
1102 KDBUS_ITEM_FOREACH(item, kname, items)
1103 if (item->type == KDBUS_ITEM_NAME)
1104 item_name = item->str;
1106 if (strcmp(item_name, name))
1109 g_string_printf (unique_name, ":1.%llu", kname->id);
1110 g_variant_builder_add (builder, "s", item_name);
1113 result = g_variant_new ("(as)", builder);
1114 g_variant_builder_unref (builder);
1115 g_string_free (unique_name,TRUE);
1117 g_kdbus_free_data (worker, cmd.offset);
1123 * g_kdbus_GetConnInfo_internal:
1127 g_kdbus_GetConnInfo_internal (GKDBusWorker *worker,
1134 struct kdbus_cmd_info *cmd;
1135 struct kdbus_info *conn_info;
1136 struct kdbus_item *item;
1142 if (!g_dbus_is_name (name))
1146 G_DBUS_ERROR_INVALID_ARGS,
1147 "Given bus name \"%s\" is not valid", name);
1151 if (!g_kdbus_NameHasOwner_internal (worker, name, error))
1155 G_DBUS_ERROR_NAME_HAS_NO_OWNER,
1156 "Could not get owner of name '%s': no such name", name);
1160 if (g_dbus_is_unique_name(name))
1162 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items);
1163 cmd = g_alloca0 (size);
1164 cmd->id = g_ascii_strtoull (name+3, NULL, 10);
1168 len = strlen(name) + 1;
1169 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items) + KDBUS_ITEM_SIZE(len);
1170 cmd = g_alloca0 (size);
1171 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
1172 cmd->items[0].type = KDBUS_ITEM_NAME;
1173 memcpy (cmd->items[0].str, name, len);
1176 cmd->attach_flags = _KDBUS_ATTACH_ALL;
1179 ret = ioctl(worker->fd, KDBUS_CMD_CONN_INFO, cmd);
1184 G_DBUS_ERROR_FAILED,
1185 _("Could not get connection info"));
1189 conn_info = (struct kdbus_info *) ((guint8 *) worker->kdbus_buffer + cmd->offset);
1192 if (conn_info->flags & KDBUS_HELLO_ACTIVATOR)
1196 if (flag == G_BUS_CREDS_UNIQUE_NAME)
1198 GString *unique_name;
1200 unique_name = g_string_new (NULL);
1201 g_string_printf (unique_name, ":1.%llu", (unsigned long long) conn_info->id);
1202 result = g_variant_new ("(s)", unique_name->str);
1203 g_string_free (unique_name,TRUE);
1207 KDBUS_ITEM_FOREACH(item, conn_info, items)
1211 case KDBUS_ITEM_PIDS:
1213 if (flag == G_BUS_CREDS_PID)
1215 guint pid = item->pids.pid;
1216 result = g_variant_new ("(u)", pid);
1220 case KDBUS_ITEM_CREDS:
1222 if (flag == G_BUS_CREDS_UID)
1224 guint uid = item->creds.uid;
1225 result = g_variant_new ("(u)", uid);
1229 case KDBUS_ITEM_SECLABEL:
1230 case KDBUS_ITEM_PID_COMM:
1231 case KDBUS_ITEM_TID_COMM:
1232 case KDBUS_ITEM_EXE:
1233 case KDBUS_ITEM_CMDLINE:
1234 case KDBUS_ITEM_CGROUP:
1235 case KDBUS_ITEM_CAPS:
1236 case KDBUS_ITEM_AUDIT:
1237 case KDBUS_ITEM_CONN_DESCRIPTION:
1238 case KDBUS_ITEM_AUXGROUPS:
1239 case KDBUS_ITEM_OWNED_NAME:
1245 g_kdbus_free_data (worker, cmd->offset);
1251 * _g_kdbus_GetNameOwner:
1255 _g_kdbus_GetNameOwner (GKDBusWorker *worker,
1259 return g_kdbus_GetConnInfo_internal (worker,
1261 G_BUS_CREDS_UNIQUE_NAME,
1267 * _g_kdbus_GetConnectionUnixProcessID:
1271 _g_kdbus_GetConnectionUnixProcessID (GKDBusWorker *worker,
1275 return g_kdbus_GetConnInfo_internal (worker,
1283 * _g_kdbus_GetConnectionUnixUser:
1287 _g_kdbus_GetConnectionUnixUser (GKDBusWorker *worker,
1291 return g_kdbus_GetConnInfo_internal (worker,
1299 * g_kdbus_bloom_add_data:
1300 * Based on bus-bloom.c from systemd
1301 * http://cgit.freedesktop.org/systemd/systemd/tree/src/libsystemd/sd-bus/bus-bloom.c
1304 g_kdbus_bloom_add_data (GKDBusWorker *worker,
1305 guint64 bloom_data [],
1311 guint bytes_num = 0;
1313 guint hash_index = 0;
1318 bit_num = worker->bloom_size * 8;
1321 bytes_num = ((__builtin_clzll(bit_num) ^ 63U) + 7) / 8;
1323 for (cnt_1 = 0; cnt_1 < (worker->bloom_n_hash); cnt_1++)
1325 for (cnt_2 = 0, hash_index = 0; cnt_2 < bytes_num; cnt_2++)
1329 _g_siphash24(hash, data, n, hash_keys[hash_index++]);
1333 p = (p << 8ULL) | (guint64) hash[8 - c];
1338 bloom_data[p >> 6] |= 1ULL << (p & 63);
1344 * g_kdbus_bloom_add_pair:
1348 g_kdbus_bloom_add_pair (GKDBusWorker *worker,
1349 guint64 bloom_data [],
1350 const gchar *parameter,
1356 size = strlen(parameter) + strlen(value) + 1;
1360 strcpy(stpcpy(stpcpy(buf, parameter), ":"), value);
1361 g_kdbus_bloom_add_data(worker, bloom_data, buf, size);
1366 * g_kdbus_bloom_add_prefixes:
1370 g_kdbus_bloom_add_prefixes (GKDBusWorker *worker,
1371 guint64 bloom_data [],
1372 const gchar *parameter,
1379 size = strlen(parameter) + strlen(value) + 1;
1383 strcpy(stpcpy(stpcpy(buf, parameter), ":"), value);
1388 last_sep = strrchr(buf, separator);
1389 if (!last_sep || last_sep == buf)
1393 g_kdbus_bloom_add_data(worker, bloom_data, buf, last_sep-buf);
1399 * _g_kdbus_AddMatch:
1403 _g_kdbus_AddMatch (GKDBusWorker *worker,
1404 const gchar *match_rule,
1408 MatchElement *element;
1409 const gchar *sender_name;
1410 gsize sender_len, size;
1411 struct kdbus_cmd_match *cmd;
1412 struct kdbus_item *item;
1418 if (match_rule[0] == '-')
1421 match = match_new (match_rule);
1429 src_id = KDBUS_MATCH_ID_ANY;
1431 bloom = g_alloca0 (worker->bloom_size);
1432 size = KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_cmd_match, items));
1433 match = match_new (match_rule);
1435 for (cnt = 0; cnt < match->n_elements; cnt++)
1437 element = &match->elements[cnt];
1438 switch (element->type)
1440 case MATCH_ELEMENT_SENDER:
1441 if (g_dbus_is_unique_name(element->value))
1443 src_id = g_ascii_strtoull ((element->value)+3, NULL, 10);
1444 size += KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, id) + sizeof(src_id));
1446 else if (g_dbus_is_name (element->value))
1448 sender_name = element->value;
1449 sender_len = strlen(element->value) + 1;
1450 size += KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, str) + sender_len);
1454 g_critical ("Error while adding a match");
1460 case MATCH_ELEMENT_TYPE:
1461 g_kdbus_bloom_add_pair (worker, bloom, "message-type", element->value);
1464 case MATCH_ELEMENT_INTERFACE:
1465 g_kdbus_bloom_add_pair (worker, bloom, "interface", element->value);
1468 case MATCH_ELEMENT_MEMBER:
1469 g_kdbus_bloom_add_pair (worker, bloom, "member", element->value);
1472 case MATCH_ELEMENT_PATH:
1473 g_kdbus_bloom_add_pair (worker, bloom, "path", element->value);
1476 case MATCH_ELEMENT_PATH_NAMESPACE:
1477 if (g_strcmp0 (element->value, "/"))
1478 g_kdbus_bloom_add_pair (worker, bloom, "path-slash-prefix", element->value);
1481 case MATCH_ELEMENT_ARGN:
1482 asprintf (&type, "arg%u", element->arg);
1483 g_kdbus_bloom_add_pair (worker, bloom, type, element->value);
1487 case MATCH_ELEMENT_ARGNPATH:
1488 asprintf (&type, "arg%u-slash-prefix", element->arg);
1489 g_kdbus_bloom_add_pair (worker, bloom, type, element->value);
1493 case MATCH_ELEMENT_ARG0NAMESPACE:
1494 g_kdbus_bloom_add_pair (worker, bloom, "arg0-dot-prefix", element->value);
1497 case MATCH_ELEMENT_DESTINATION:
1498 case MATCH_ELEMENT_EAVESDROP:
1503 size += KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, data64) + worker->bloom_size);
1504 cmd = g_alloca0 (size);
1506 cmd->cookie = cookie;
1509 item->size = G_STRUCT_OFFSET(struct kdbus_item, data64) + worker->bloom_size;
1510 item->type = KDBUS_ITEM_BLOOM_MASK;
1511 memcpy(item->data64, bloom, worker->bloom_size);
1512 item = KDBUS_ITEM_NEXT(item);
1514 if (src_id != KDBUS_MATCH_ID_ANY)
1516 item->size = G_STRUCT_OFFSET (struct kdbus_item, id) + sizeof(src_id);
1517 item->type = KDBUS_ITEM_ID;
1519 item = KDBUS_ITEM_NEXT(item);
1524 item->size = G_STRUCT_OFFSET (struct kdbus_item, str) + sender_len;
1525 item->type = KDBUS_ITEM_NAME;
1526 memcpy (item->str, sender_name, sender_len);
1529 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd);
1531 g_critical ("Error while adding a match: %d", (int) errno);
1538 * _g_kdbus_RemoveMatch:
1542 _g_kdbus_RemoveMatch (GKDBusWorker *worker,
1545 struct kdbus_cmd_match cmd = {
1546 .size = sizeof(cmd),
1551 g_print ("Unsubscribe match entry with cookie - %d\n", (int)cookie);
1552 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_REMOVE, &cmd);
1554 g_warning ("Error while removing a match: %d\n", errno);
1559 * _g_kdbus_subscribe_name_owner_changed_internal:
1563 _g_kdbus_subscribe_name_owner_changed_internal (GKDBusWorker *worker,
1565 const gchar *old_name,
1566 const gchar *new_name,
1569 struct kdbus_item *item;
1570 struct kdbus_cmd_match *cmd;
1574 guint64 new_id = KDBUS_MATCH_ID_ANY;
1577 len = strlen(name) + 1;
1581 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1582 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1583 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1585 cmd = g_alloca0 (size);
1587 cmd->cookie = cookie;
1590 if (old_name == NULL)
1592 old_id = KDBUS_MATCH_ID_ANY;
1596 if (g_dbus_is_unique_name(old_name))
1597 old_id = strtoull (old_name + 3, NULL, 10);
1602 if (new_name == NULL)
1604 new_id = KDBUS_MATCH_ID_ANY;
1608 if (g_dbus_is_unique_name(new_name))
1609 new_id = strtoull (new_name + 3, NULL, 10);
1614 cmd = g_alloca0 (size);
1616 cmd->cookie = cookie;
1619 /* KDBUS_ITEM_NAME_CHANGE */
1620 item->type = KDBUS_ITEM_NAME_CHANGE;
1621 item->name_change.old_id.id = old_id;
1622 item->name_change.new_id.id = new_id;
1625 memcpy(item->name_change.name, name, len);
1627 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1628 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1629 item = KDBUS_ITEM_NEXT(item);
1631 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd);
1633 g_warning ("ERROR - %d\n", (int) errno);
1638 * _g_kdbus_subscribe_name_acquired:
1642 _g_kdbus_subscribe_name_acquired (GKDBusWorker *worker,
1646 struct kdbus_item *item;
1647 struct kdbus_cmd_match *cmd;
1651 g_print ("Subscribe 'NameAcquired': name - %s ; cookie - %d\n", name, (int)cookie);
1653 len = strlen(name) + 1;
1657 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1658 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1659 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1661 cmd = g_alloca0 (size);
1663 cmd->cookie = cookie;
1666 /* KDBUS_ITEM_NAME_ADD */
1667 item->type = KDBUS_ITEM_NAME_ADD;
1668 item->name_change.old_id.id = KDBUS_MATCH_ID_ANY;
1669 item->name_change.new_id.id = worker->unique_id;
1672 memcpy(item->name_change.name, name, len);
1674 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1675 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1676 item = KDBUS_ITEM_NEXT(item);
1678 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd);
1680 g_warning ("ERROR - %d\n", (int) errno);
1682 _g_kdbus_subscribe_name_owner_changed_internal (worker, name, NULL, worker->unique_name, cookie);
1687 * _g_kdbus_subscribe_name_lost:
1691 _g_kdbus_subscribe_name_lost (GKDBusWorker *worker,
1695 struct kdbus_item *item;
1696 struct kdbus_cmd_match *cmd;
1700 g_print ("Subscribe 'NameLost': name - %s ; cookie - %d\n", name, (int)cookie);
1702 len = strlen(name) + 1;
1706 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1707 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1708 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1710 cmd = g_alloca0 (size);
1712 cmd->cookie = cookie;
1715 /* KDBUS_ITEM_NAME_REMOVE */
1716 item->type = KDBUS_ITEM_NAME_REMOVE;
1717 item->name_change.old_id.id = worker->unique_id;
1718 item->name_change.new_id.id = KDBUS_MATCH_ID_ANY;
1721 memcpy(item->name_change.name, name, len);
1723 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1724 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1725 item = KDBUS_ITEM_NEXT(item);
1727 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd);
1729 g_warning ("ERROR - %d\n", (int) errno);
1731 _g_kdbus_subscribe_name_owner_changed_internal (worker, name, worker->unique_name, NULL, cookie);
1740 _g_kdbus_subscribe_name_owner_changed (GKDBusWorker *worker,
1744 g_print ("NameOwnerChanged subscription\n");
1749 * g_kdbus_setup_bloom:
1750 * Based on bus-bloom.c from systemd
1751 * http://cgit.freedesktop.org/systemd/systemd/tree/src/libsystemd/sd-bus/bus-bloom.c
1754 g_kdbus_setup_bloom (GKDBusWorker *worker,
1755 GDBusMessage *dbus_msg,
1756 struct kdbus_bloom_filter *bloom_filter)
1760 const gchar *message_type;
1761 const gchar *interface;
1762 const gchar *member;
1767 body = g_dbus_message_get_body (dbus_msg);
1768 message_type = _g_dbus_enum_to_string (G_TYPE_DBUS_MESSAGE_TYPE, g_dbus_message_get_message_type (dbus_msg));
1769 interface = g_dbus_message_get_interface (dbus_msg);
1770 member = g_dbus_message_get_member (dbus_msg);
1771 path = g_dbus_message_get_path (dbus_msg);
1773 bloom_data = bloom_filter->data;
1774 memset (bloom_data, 0, worker->bloom_size);
1775 bloom_filter->generation = 0;
1777 g_kdbus_bloom_add_pair(worker, bloom_data, "message-type", message_type);
1780 g_kdbus_bloom_add_pair(worker, bloom_data, "interface", interface);
1783 g_kdbus_bloom_add_pair(worker, bloom_data, "member", member);
1787 g_kdbus_bloom_add_pair(worker, bloom_data, "path", path);
1788 g_kdbus_bloom_add_pair(worker, bloom_data, "path-slash-prefix", path);
1789 g_kdbus_bloom_add_prefixes(worker, bloom_data, "path-slash-prefix", path, '/');
1794 const GVariantType *body_type;
1795 const GVariantType *arg_type;
1798 body_type = g_variant_get_type (body);
1800 for (arg_type = g_variant_type_first (body_type), cnt = 0;
1802 arg_type = g_variant_type_next (arg_type), cnt++)
1804 gchar type_char = g_variant_type_peek_string (arg_type)[0];
1805 gchar buf[sizeof("arg")-1 + 2 + sizeof("-slash-prefix")];
1810 if (type_char != 's' && type_char != 'o')
1811 /* XXX: kdbus docs say "stop after first non-string" but I
1812 * think they're wrong (vs. dbus-1 compat)...
1816 child = g_variant_get_child_value (body, cnt);
1817 str = g_variant_get_string (child, NULL);
1819 e = stpcpy(buf, "arg");
1821 *(e++) = '0' + (char) cnt;
1824 *(e++) = '0' + (char) (cnt / 10);
1825 *(e++) = '0' + (char) (cnt % 10);
1828 /* We add this one for both strings and object paths */
1829 strcpy(e, "-slash-prefix");
1830 g_kdbus_bloom_add_prefixes(worker, bloom_data, buf, str, '/');
1832 /* But the others are only for strings */
1833 if (type_char == 's')
1835 strcpy(e, "-dot-prefix");
1836 g_kdbus_bloom_add_prefixes(worker, bloom_data, buf, str, '.');
1839 g_kdbus_bloom_add_pair(worker, bloom_data, buf, str);
1842 g_variant_unref (child);
1853 g_kdbus_translate_id_change (GKDBusWorker *worker,
1854 struct kdbus_item *item)
1856 g_error ("TODO: translate_id_change\n");
1865 g_kdbus_translate_name_change (GKDBusWorker *worker,
1866 struct kdbus_item *item)
1868 GDBusMessage *signal_message;
1870 signal_message = NULL;
1873 if ((item->type == KDBUS_ITEM_NAME_ADD) ||
1874 (item->type == KDBUS_ITEM_NAME_CHANGE && ((guint64)item->name_change.new_id.id == worker->unique_id)))
1876 signal_message = g_dbus_message_new_signal ("/org/freedesktop/DBus",
1877 "org.freedesktop.DBus",
1880 g_dbus_message_set_sender (signal_message, "org.freedesktop.DBus");
1881 g_dbus_message_set_body (signal_message,
1882 g_variant_new ("(s)", item->name_change.name));
1884 (* worker->message_received_callback) (signal_message, worker->user_data);
1885 g_object_unref (signal_message);
1889 if ((item->type == KDBUS_ITEM_NAME_REMOVE) ||
1890 (item->type == KDBUS_ITEM_NAME_CHANGE && ((guint64)item->name_change.old_id.id == worker->unique_id)))
1892 GDBusMessage *signal_message;
1894 signal_message = g_dbus_message_new_signal ("/org/freedesktop/DBus",
1895 "org.freedesktop.DBus",
1898 g_dbus_message_set_sender (signal_message, "org.freedesktop.DBus");
1899 g_dbus_message_set_body (signal_message,
1900 g_variant_new ("(s)", item->name_change.name));
1902 (* worker->message_received_callback) (signal_message, worker->user_data);
1903 g_object_unref (signal_message);
1906 /* NameOwnerChanged */
1916 g_kdbus_translate_kernel_reply (GKDBusWorker *worker,
1917 struct kdbus_item *item)
1919 g_error ("TODO: translate_kernel_reply\n");
1924 * g_kdbus_decode_kernel_msg:
1928 g_kdbus_decode_kernel_msg (GKDBusWorker *worker,
1929 struct kdbus_msg *msg)
1931 struct kdbus_item *item = NULL;
1933 KDBUS_ITEM_FOREACH(item, msg, items)
1937 case KDBUS_ITEM_ID_ADD:
1938 case KDBUS_ITEM_ID_REMOVE:
1939 g_kdbus_translate_id_change (worker, item);
1942 case KDBUS_ITEM_NAME_ADD:
1943 case KDBUS_ITEM_NAME_REMOVE:
1944 case KDBUS_ITEM_NAME_CHANGE:
1945 g_kdbus_translate_name_change (worker, item);
1948 case KDBUS_ITEM_REPLY_TIMEOUT:
1949 case KDBUS_ITEM_REPLY_DEAD:
1950 g_kdbus_translate_kernel_reply (worker, item);
1953 case KDBUS_ITEM_TIMESTAMP:
1957 g_warning ("Unknown field in kernel message - %lld", item->type);
1964 * g_kdbus_decode_dbus_msg:
1967 static GDBusMessage *
1968 g_kdbus_decode_dbus_msg (GKDBusWorker *worker,
1969 struct kdbus_msg *msg)
1971 GDBusMessage *message;
1972 struct kdbus_item *item;
1973 gssize data_size = 0;
1974 GArray *body_vectors;
1980 GVariantIter *fields_iter;
1981 guint8 endianness, type, flags, version;
1987 message = g_dbus_message_new ();
1989 body_vectors = g_array_new (FALSE, FALSE, sizeof (GVariantVector));
1991 tmp = g_strdup_printf (":1.%"G_GUINT64_FORMAT, (guint64) msg->src_id);
1992 g_dbus_message_set_sender (message, tmp);
1998 KDBUS_ITEM_FOREACH(item, msg, items)
2000 if (item->size <= KDBUS_ITEM_HEADER_SIZE)
2001 g_error("[KDBUS] %llu bytes - invalid data record\n", item->size);
2003 data_size = item->size - KDBUS_ITEM_HEADER_SIZE;
2007 /* KDBUS_ITEM_DST_NAME */
2008 case KDBUS_ITEM_DST_NAME:
2009 /* Classic D-Bus doesn't make this known to the receiver, so
2010 * we don't do it here either (for compatibility with the
2015 /* KDBUS_ITEM_PALOAD_OFF */
2016 case KDBUS_ITEM_PAYLOAD_OFF:
2018 GVariantVector vector;
2021 /* We want to make sure the bytes are aligned the same as
2022 * they would be if they appeared in a contiguously
2023 * allocated chunk of aligned memory.
2025 * We decide what the alignment 'should' be by consulting
2026 * body_size, which has been tracking the total size of the
2027 * message up to this point.
2029 * We then play around with the pointer by removing as many
2030 * bytes as required to get it to the proper alignment (and
2031 * copy extra bytes accordingly). This means that we will
2032 * grab some extra data in the 'bytes', but it won't be
2033 * shared with GVariant (which means there is no chance of
2034 * it being accidentally retransmitted).
2036 * The kernel does the same thing, so make sure we get the
2037 * expected result. Because of the kernel doing the same,
2038 * the result is that we will always be rounding-down to a
2039 * multiple of 8 for the pointer, which means that the
2040 * pointer will always be valid, assuming the original
2043 * We could fix this with a new GBytes constructor that took
2044 * 'flavour' as a parameter, but it's not worth it...
2046 flavour = body_size & 7;
2047 g_assert ((item->vec.offset & 7) == flavour);
2049 vector.gbytes = g_bytes_new (((guchar *) msg) + item->vec.offset - flavour, item->vec.size + flavour);
2050 vector.data.pointer = g_bytes_get_data (vector.gbytes, NULL);
2051 vector.data.pointer += flavour;
2052 vector.size = item->vec.size;
2054 g_array_append_val (body_vectors, vector);
2055 body_size += vector.size;
2059 /* KDBUS_ITEM_PAYLOAD_MEMFD */
2060 case KDBUS_ITEM_PAYLOAD_MEMFD:
2062 GVariantVector vector;
2066 vector.gbytes = g_bytes_new_take_zero_copy_fd (item->memfd.fd);
2067 data = g_bytes_get_data (vector.gbytes, &size);
2069 g_assert (item->memfd.start + item->memfd.size <= size);
2071 vector.data.pointer = data + item->memfd.start;
2072 vector.size = item->memfd.size;
2074 g_array_append_val (body_vectors, vector);
2075 body_size += vector.size;
2079 /* KDBUS_ITEM_FDS */
2080 case KDBUS_ITEM_FDS:
2082 GUnixFDList *fd_list;
2084 fd_list = g_unix_fd_list_new_from_array (item->fds, data_size / sizeof (int));
2085 g_dbus_message_set_unix_fd_list (message, fd_list);
2086 g_object_unref (fd_list);
2090 /* All of the following items, like CMDLINE,
2091 CGROUP, etc. need some GDBUS API extensions and
2092 should be implemented in the future */
2093 case KDBUS_ITEM_TIMESTAMP:
2095 /* g_print ("time: seq %llu mon %llu real %llu\n",
2096 item->timestamp.seqnum, item->timestamp.monotonic_ns, item->timestamp.realtime_ns); */
2098 //g_dbus_message_set_timestamp (message, item->timestamp.monotonic_ns / 1000);
2099 //g_dbus_message_set_serial (message, item->timestamp.seqnum);
2103 case KDBUS_ITEM_CREDS:
2105 /* g_print ("creds: u%llu eu %llu su%llu fsu%llu g%llu eg%llu sg%llu fsg%llu\n",
2106 item->creds.uid, item->creds.euid, item->creds.suid, item->creds.fsuid,
2107 item->creds.gid, item->creds.egid, item->creds.sgid, item->creds.fsgid); */
2111 case KDBUS_ITEM_PIDS:
2112 case KDBUS_ITEM_PID_COMM:
2113 case KDBUS_ITEM_TID_COMM:
2114 case KDBUS_ITEM_EXE:
2115 case KDBUS_ITEM_CMDLINE:
2116 case KDBUS_ITEM_CGROUP:
2117 case KDBUS_ITEM_AUDIT:
2118 case KDBUS_ITEM_CAPS:
2119 case KDBUS_ITEM_SECLABEL:
2120 case KDBUS_ITEM_CONN_DESCRIPTION:
2121 case KDBUS_ITEM_AUXGROUPS:
2122 case KDBUS_ITEM_OWNED_NAME:
2123 case KDBUS_ITEM_NAME:
2124 //g_print ("unhandled %04x\n", (int) item->type);
2128 g_error ("[KDBUS] DBUS_PAYLOAD: Unknown filed - %lld", item->type);
2133 body = GLIB_PRIVATE_CALL(g_variant_from_vectors) (G_VARIANT_TYPE ("((yyyyuta{tv})v)"),
2134 (GVariantVector *) body_vectors->data,
2135 body_vectors->len, body_size, FALSE);
2138 for (i = 0; i < body_vectors->len; i++)
2139 g_bytes_unref (g_array_index (body_vectors, GVariantVector, i).gbytes);
2141 g_array_free (body_vectors, TRUE);
2143 parts[0] = g_variant_get_child_value (body, 0);
2144 parts[1] = g_variant_get_child_value (body, 1);
2145 g_variant_unref (body);
2147 g_variant_get (parts[0], "(yyyyuta{tv})", &endianness, &type, &flags, &version, NULL, &serial, &fields_iter);
2148 g_variant_unref (parts[0]);
2150 while (g_variant_iter_loop (fields_iter, "{tv}", &key, &value))
2151 g_dbus_message_set_header (message, key, value);
2153 g_dbus_message_set_flags (message, flags);
2154 g_dbus_message_set_serial (message, serial);
2155 g_dbus_message_set_message_type (message, type);
2157 //if (g_dbus_message_get_header (message, G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE) != NULL)
2159 body = g_variant_get_variant (parts[1]);
2160 g_dbus_message_set_body (message, body);
2161 g_variant_unref (body);
2163 g_variant_unref (parts[1]);
2165 //g_print ("Received:\n%s\n", g_dbus_message_print (message, 2));
2167 (* worker->message_received_callback) (message, worker->user_data);
2169 g_object_unref (message);
2180 _g_kdbus_receive (GKDBusWorker *kdbus,
2181 GCancellable *cancellable,
2184 struct kdbus_cmd_recv recv;
2185 struct kdbus_msg *msg;
2187 memset (&recv, 0, sizeof recv);
2188 recv.size = sizeof (recv);
2190 if (g_cancellable_set_error_if_cancelled (cancellable, error))
2194 if (ioctl(kdbus->fd, KDBUS_CMD_RECV, &recv) < 0)
2199 if (errno == EAGAIN)
2202 g_warning ("in holding pattern over %d %d\n", kdbus->fd, errno);
2206 g_set_error (error, G_IO_ERROR,
2207 g_io_error_from_errno (errno),
2208 _("Error while receiving message: %s"),
2209 g_strerror (errno));
2213 msg = (struct kdbus_msg *)((guint8 *)kdbus->kdbus_buffer + recv.msg.offset);
2215 if (msg->payload_type == KDBUS_PAYLOAD_DBUS)
2216 g_kdbus_decode_dbus_msg (kdbus, msg);
2217 else if (msg->payload_type == KDBUS_PAYLOAD_KERNEL)
2218 g_kdbus_decode_kernel_msg (kdbus, msg);
2223 G_DBUS_ERROR_FAILED,
2224 _("Received unknown payload type"));
2228 g_kdbus_free_data (kdbus, recv.msg.offset);
2234 g_kdbus_msg_append_item (struct kdbus_msg *msg,
2239 struct kdbus_item *item;
2242 item_size = size + G_STRUCT_OFFSET(struct kdbus_item, data);
2244 if (msg->size + item_size > KDBUS_MSG_MAX_SIZE)
2248 msg->size += (-msg->size) & 7;
2249 item = (struct kdbus_item *) ((guchar *) msg + msg->size);
2251 item->size = item_size;
2252 memcpy (item->data, data, size);
2254 msg->size += item_size;
2260 g_kdbus_msg_append_payload_vec (struct kdbus_msg *msg,
2264 struct kdbus_vec vec = {
2266 .address = (gsize) data
2269 return g_kdbus_msg_append_item (msg, KDBUS_ITEM_PAYLOAD_VEC, &vec, sizeof vec);
2273 g_kdbus_msg_append_payload_memfd (struct kdbus_msg *msg,
2278 struct kdbus_memfd mfd = {
2284 return g_kdbus_msg_append_item (msg, KDBUS_ITEM_PAYLOAD_MEMFD, &mfd, sizeof mfd);
2287 static struct kdbus_bloom_filter *
2288 g_kdbus_msg_append_bloom (struct kdbus_msg *msg,
2291 struct kdbus_item *bloom_item;
2294 msg->size += (-msg->size) & 7;
2295 bloom_item = (struct kdbus_item *) ((guchar *) msg + msg->size);
2297 /* set size and type */
2298 bloom_item->size = G_STRUCT_OFFSET (struct kdbus_item, bloom_filter) +
2299 G_STRUCT_OFFSET (struct kdbus_bloom_filter, data) +
2301 bloom_item->type = KDBUS_ITEM_BLOOM_FILTER;
2303 msg->size += bloom_item->size;
2304 return &bloom_item->bloom_filter;
2308 #include "dbusheader.h"
2310 void dump_header (gconstpointer data, gsize size) ;
2312 dump_header (gconstpointer data,
2315 GDBusMessageHeaderFieldsIterator iter;
2316 GDBusMessageHeader header;
2318 header = g_dbus_message_header_new (data, size);
2319 g_print ("header e/%c t/%u f/x%x v/%u s/%"G_GUINT64_FORMAT"\n",
2320 g_dbus_message_header_get_endian (header),
2321 g_dbus_message_header_get_type (header),
2322 g_dbus_message_header_get_flags (header),
2323 g_dbus_message_header_get_version (header),
2324 g_dbus_message_header_get_serial (header));
2326 iter = g_dbus_message_header_iterate_fields (header);
2328 while (g_dbus_message_header_fields_iterator_next (&iter))
2330 const gchar *string;
2334 key = g_dbus_message_header_fields_iterator_get_key (iter);
2338 case G_DBUS_MESSAGE_HEADER_FIELD_PATH:
2339 if (g_dbus_message_header_fields_iterator_get_value_as_object_path (iter, &string))
2340 g_print (" path: %s\n", string);
2342 g_print (" path: <<invalid string>>\n");
2345 case G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE:
2346 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2347 g_print (" interface: %s\n", string);
2349 g_print (" interface: <<invalid string>>\n");
2352 case G_DBUS_MESSAGE_HEADER_FIELD_MEMBER:
2353 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2354 g_print (" member: %s\n", string);
2356 g_print (" member: <<invalid string>>\n");
2359 case G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME:
2360 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2361 g_print (" error: %s\n", string);
2363 g_print (" error: <<invalid string>>\n");
2366 case G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL:
2367 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2368 g_print (" serial: %s\n", string);
2370 g_print (" serial: <<invalid string>>\n");
2373 case G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION:
2374 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2375 g_print (" destination: %s\n", string);
2377 g_print (" destination: <<invalid string>>\n");
2380 case G_DBUS_MESSAGE_HEADER_FIELD_SENDER:
2381 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2382 g_print (" sender: %s\n", string);
2384 g_print (" sender: <<invalid string>>\n");
2388 g_print ("unknown field code %"G_GUINT64_FORMAT"\n", key);
2389 g_assert_not_reached ();
2400 * Returns: size of data sent or -1 when error
2403 _g_kdbus_send (GKDBusWorker *kdbus,
2404 GDBusMessage *message,
2407 struct kdbus_msg *msg = alloca (KDBUS_MSG_MAX_SIZE);
2408 GVariantVectors body_vectors;
2409 struct kdbus_cmd_send send;
2410 const gchar *dst_name;
2412 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), -1);
2414 /* fill in as we go... */
2415 memset (msg, 0, sizeof (struct kdbus_msg));
2416 msg->size = sizeof (struct kdbus_msg);
2417 msg->payload_type = KDBUS_PAYLOAD_DBUS;
2418 msg->src_id = kdbus->unique_id;
2419 msg->cookie = g_dbus_message_get_serial(message);
2421 /* Message destination */
2423 dst_name = g_dbus_message_get_destination (message);
2425 if (dst_name != NULL)
2427 if (g_dbus_is_unique_name (dst_name))
2429 if (dst_name[1] != '1' || dst_name[2] != '.')
2431 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_NAME_HAS_NO_OWNER,
2432 "Invalid unique D-Bus name '%s'", dst_name);
2436 /* We already know that it passes the checks for unique
2437 * names, so no need to perform error checking on strtoull.
2439 msg->dst_id = strtoull (dst_name + 3, NULL, 10);
2444 g_kdbus_msg_append_item (msg, KDBUS_ITEM_DST_NAME, dst_name, strlen (dst_name) + 1);
2445 msg->dst_id = KDBUS_DST_ID_NAME;
2449 msg->dst_id = KDBUS_DST_ID_BROADCAST;
2452 /* File descriptors */
2454 GUnixFDList *fd_list;
2456 fd_list = g_dbus_message_get_unix_fd_list (message);
2458 if (fd_list != NULL)
2463 fds = g_unix_fd_list_peek_fds (fd_list, &n_fds);
2466 g_kdbus_msg_append_item (msg, KDBUS_ITEM_FDS, fds, sizeof (gint) * n_fds);
2472 struct dbus_fixed_header fh;
2473 GHashTableIter header_iter;
2474 GVariantBuilder builder;
2475 gpointer key, value;
2479 fh.endian = (G_BYTE_ORDER == G_LITTLE_ENDIAN) ? 'l': 'B';
2480 fh.type = g_dbus_message_get_message_type (message);
2481 fh.flags = g_dbus_message_get_flags (message);
2484 fh.serial = g_dbus_message_get_serial (message);
2485 parts[0] = g_variant_new_from_data (DBUS_FIXED_HEADER_TYPE, &fh, sizeof fh, TRUE, NULL, NULL);
2487 g_dbus_message_init_header_iter (message, &header_iter);
2488 g_variant_builder_init (&builder, DBUS_EXTENDED_HEADER_TYPE);
2490 /* We set the sender field to the correct value for ourselves */
2491 g_variant_builder_add (&builder, "{tv}",
2492 (guint64) G_DBUS_MESSAGE_HEADER_FIELD_SENDER,
2493 g_variant_new_printf (":1.%"G_GUINT64_FORMAT, kdbus->unique_id));
2495 while (g_hash_table_iter_next (&header_iter, &key, &value))
2497 guint64 key_int = (gsize) key;
2501 /* These are the normal header fields that get passed
2504 case G_DBUS_MESSAGE_HEADER_FIELD_PATH:
2505 case G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE:
2506 case G_DBUS_MESSAGE_HEADER_FIELD_MEMBER:
2507 case G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME:
2508 case G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL:
2509 case G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION:
2510 g_variant_builder_add (&builder, "{tv}", key_int, value);
2511 /* This is a little bit gross.
2513 * We must send the header part of the message in a single
2514 * vector as per kdbus rules, but the GVariant serialiser
2515 * code will split any item >= 128 bytes into its own
2516 * vector to save the copy.
2518 * No header field should be that big anyway... right?
2520 g_assert_cmpint (g_variant_get_size (value), <, 128);
2523 /* We send this one unconditionally, but set it ourselves */
2524 case G_DBUS_MESSAGE_HEADER_FIELD_SENDER:
2527 /* We don't send these at all in GVariant format */
2528 case G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE:
2529 case G_DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS:
2533 g_assert_not_reached ();
2536 parts[1] = g_variant_builder_end (&builder);
2538 body = g_dbus_message_get_body (message);
2540 body = g_variant_new ("()");
2541 parts[2] = g_variant_new_variant (body);
2543 body = g_variant_ref_sink (g_variant_new_tuple (parts, G_N_ELEMENTS (parts)));
2544 GLIB_PRIVATE_CALL(g_variant_to_vectors) (body, &body_vectors);
2546 /* Sanity check to make sure the header is really contiguous:
2548 * - we must have at least one vector in the output
2549 * - the first vector must completely contain at least the header
2551 g_assert_cmpint (body_vectors.vectors->len, >, 0);
2552 g_assert_cmpint (g_array_index (body_vectors.vectors, GVariantVector, 0).size, >=,
2553 g_variant_get_size (parts[0]) + g_variant_get_size (parts[1]));
2555 g_variant_unref (body);
2561 for (i = 0; i < body_vectors.vectors->len; i++)
2563 GVariantVector vector = g_array_index (body_vectors.vectors, GVariantVector, i);
2569 fd = g_bytes_get_zero_copy_fd (vector.gbytes);
2573 const guchar *bytes_data;
2576 bytes_data = g_bytes_get_data (vector.gbytes, &bytes_size);
2578 if (bytes_data <= vector.data.pointer && vector.data.pointer + vector.size <= bytes_data + bytes_size)
2580 if (!g_kdbus_msg_append_payload_memfd (msg, fd, vector.data.pointer - bytes_data, vector.size))
2585 if (!g_kdbus_msg_append_payload_vec (msg, vector.data.pointer, vector.size))
2591 if (!g_kdbus_msg_append_payload_vec (msg, vector.data.pointer, vector.size))
2596 if (!g_kdbus_msg_append_payload_vec (msg, body_vectors.extra_bytes->data + vector.data.offset, vector.size))
2604 msg->flags = ((g_dbus_message_get_flags (message) & G_DBUS_MESSAGE_FLAGS_NO_REPLY_EXPECTED) ? 0 : KDBUS_MSG_EXPECT_REPLY) |
2605 ((g_dbus_message_get_flags (message) & G_DBUS_MESSAGE_FLAGS_NO_AUTO_START) ? KDBUS_MSG_NO_AUTO_START : 0);
2607 if ((msg->flags) & KDBUS_MSG_EXPECT_REPLY)
2608 msg->timeout_ns = 1000LU * g_get_monotonic_time() + KDBUS_TIMEOUT_NS;
2610 msg->cookie_reply = g_dbus_message_get_reply_serial(message);
2612 if (g_dbus_message_get_message_type (message) == G_DBUS_MESSAGE_TYPE_SIGNAL)
2613 msg->flags |= KDBUS_MSG_SIGNAL;
2618 if (msg->dst_id == KDBUS_DST_ID_BROADCAST)
2620 struct kdbus_bloom_filter *bloom_filter;
2622 bloom_filter = g_kdbus_msg_append_bloom (msg, kdbus->bloom_size);
2623 g_kdbus_setup_bloom (kdbus, message, bloom_filter);
2626 send.size = sizeof (send);
2628 send.msg_address = (gsize) msg;
2633 if (ioctl(kdbus->fd, KDBUS_CMD_SEND, &send))
2635 if (errno == ENXIO || errno == ESRCH)
2637 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_SERVICE_UNKNOWN,
2638 "Destination '%s' not known", dst_name);
2640 else if (errno == EADDRNOTAVAIL)
2642 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_SERVICE_UNKNOWN,
2643 "No support for activation for name: %s", dst_name);
2645 else if (errno == EXFULL)
2647 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_LIMITS_EXCEEDED,
2648 "The memory pool of the receiver is full");
2652 g_error ("WTF? %d\n", errno);
2653 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
2654 "%s", strerror(errno));
2662 /* We end up here if:
2663 * - too many kdbus_items
2664 * - too large kdbus_msg size
2665 * - too much vector data
2667 * We need to compact the message before sending it.
2669 g_assert_not_reached ();
2673 g_kdbus_worker_new (const gchar *address,
2676 GKDBusWorker *worker;
2678 worker = g_object_new (G_TYPE_KDBUS_WORKER, NULL);
2679 if (!_g_kdbus_open (worker, address, error))
2681 g_object_unref (worker);
2689 g_kdbus_worker_associate (GKDBusWorker *worker,
2690 GDBusCapabilityFlags capabilities,
2691 GDBusWorkerMessageReceivedCallback message_received_callback,
2692 GDBusWorkerMessageAboutToBeSentCallback message_about_to_be_sent_callback,
2693 GDBusWorkerDisconnectedCallback disconnected_callback,
2696 worker->capabilities = capabilities;
2697 worker->message_received_callback = message_received_callback;
2698 worker->message_about_to_be_sent_callback = message_about_to_be_sent_callback;
2699 worker->disconnected_callback = disconnected_callback;
2700 worker->user_data = user_data;
2704 g_kdbus_worker_unfreeze (GKDBusWorker *worker)
2708 if (worker->source != NULL)
2711 worker->context = g_main_context_ref_thread_default ();
2712 worker->source = g_unix_fd_source_new (worker->fd, G_IO_IN);
2714 g_source_set_callback (worker->source, (GSourceFunc) kdbus_ready, worker, NULL);
2715 name = g_strdup_printf ("kdbus worker");
2716 g_source_set_name (worker->source, name);
2719 g_source_attach (worker->source, worker->context);
2723 g_kdbus_worker_send_message (GKDBusWorker *worker,
2724 GDBusMessage *message,
2727 return _g_kdbus_send (worker, message, error);
2731 g_kdbus_worker_stop (GKDBusWorker *worker)
2736 g_kdbus_worker_flush_sync (GKDBusWorker *worker)
2741 g_kdbus_worker_close (GKDBusWorker *worker,
2742 GCancellable *cancellable,
2743 GSimpleAsyncResult *result)