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->attach_flags_send = _KDBUS_ATTACH_ALL;
559 kdbus->attach_flags_recv = _KDBUS_ATTACH_ALL;
563 kdbus_ready (gint fd,
564 GIOCondition condition,
567 GKDBusWorker *kdbus = user_data;
568 GError *error = NULL;
570 _g_kdbus_receive (kdbus, NULL, &error);
571 g_assert_no_error (error);
573 return G_SOURCE_CONTINUE;
577 _g_kdbus_open (GKDBusWorker *worker,
578 const gchar *address,
581 g_return_val_if_fail (G_IS_KDBUS_WORKER (worker), FALSE);
583 worker->fd = open(address, O_RDWR|O_NOCTTY|O_CLOEXEC);
586 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED, _("Can't open kdbus endpoint"));
590 worker->closed = FALSE;
601 g_kdbus_free_data (GKDBusWorker *kdbus,
604 struct kdbus_cmd_free cmd = {
611 ret = ioctl (kdbus->fd, KDBUS_CMD_FREE, &cmd);
620 * g_kdbus_translate_nameowner_flags:
624 g_kdbus_translate_nameowner_flags (GBusNameOwnerFlags flags,
625 guint64 *kdbus_flags)
631 if (flags & G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT)
632 new_flags |= KDBUS_NAME_ALLOW_REPLACEMENT;
634 if (flags & G_BUS_NAME_OWNER_FLAGS_REPLACE)
635 new_flags |= KDBUS_NAME_REPLACE_EXISTING;
637 if (!(flags & G_BUS_NAME_OWNER_FLAGS_DO_NOT_QUEUE))
638 new_flags |= KDBUS_NAME_QUEUE;
640 *kdbus_flags = new_flags;
649 _g_kdbus_close (GKDBusWorker *kdbus)
651 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), FALSE);
656 g_source_destroy (kdbus->source);
659 g_main_context_unref (kdbus->context);
660 kdbus->context = NULL;
665 kdbus->closed = TRUE;
669 * _g_kdbus_is_closed:
673 _g_kdbus_is_closed (GKDBusWorker *kdbus)
675 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), FALSE);
677 return kdbus->closed;
686 _g_kdbus_Hello (GKDBusWorker *worker,
689 struct kdbus_cmd_hello *cmd;
690 struct kdbus_item *item;
693 size_t size, conn_name_size;
695 conn_name = "gdbus-kdbus";
696 conn_name_size = strlen (conn_name);
698 size = KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_cmd_hello, items)) +
699 KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, str) + conn_name_size + 1);
701 cmd = g_alloca0 (size);
702 cmd->flags = worker->flags;
703 cmd->attach_flags_send = worker->attach_flags_send;
704 cmd->attach_flags_recv = worker->attach_flags_recv;
706 cmd->pool_size = KDBUS_POOL_SIZE;
709 item->size = G_STRUCT_OFFSET (struct kdbus_item, str) + conn_name_size + 1;
710 item->type = KDBUS_ITEM_CONN_DESCRIPTION;
711 memcpy (item->str, conn_name, conn_name_size+1);
712 item = KDBUS_ITEM_NEXT (item);
714 if (ioctl(worker->fd, KDBUS_CMD_HELLO, cmd))
716 g_set_error (error, G_IO_ERROR,
717 g_io_error_from_errno (errno),
718 _("Failed to send HELLO: %s"),
723 worker->kdbus_buffer = mmap(NULL, KDBUS_POOL_SIZE, PROT_READ, MAP_SHARED, worker->fd, 0);
724 if (worker->kdbus_buffer == MAP_FAILED)
726 g_set_error (error, G_IO_ERROR,
727 g_io_error_from_errno (errno),
733 if (cmd->bus_flags > 0xFFFFFFFFULL)
735 g_set_error_literal (error,
738 _("Incompatible HELLO flags"));
742 memcpy (worker->bus_id, cmd->id128, 16);
744 worker->unique_id = cmd->id;
745 asprintf(&worker->unique_name, ":1.%llu", (unsigned long long) cmd->id);
747 /* read bloom filters parameters */
748 //worker->bloom_size = (gsize) cmd->bloom.size;
749 //worker->bloom_n_hash = (guint) cmd->bloom.n_hash;
751 return g_variant_new ("(s)", worker->unique_name);
756 * _g_kdbus_RequestName:
760 _g_kdbus_RequestName (GKDBusWorker *worker,
762 GBusNameOwnerFlags flags,
766 struct kdbus_cmd *cmd;
771 status = G_BUS_REQUEST_NAME_FLAGS_PRIMARY_OWNER;
773 if (!g_dbus_is_name (name))
777 G_DBUS_ERROR_INVALID_ARGS,
778 "Given bus name \"%s\" is not valid", name);
786 G_DBUS_ERROR_INVALID_ARGS,
787 "Cannot acquire a service starting with ':' such as \"%s\"", name);
791 g_kdbus_translate_nameowner_flags (flags, &kdbus_flags);
793 len = strlen(name) + 1;
794 size = G_STRUCT_OFFSET (struct kdbus_cmd, items) + KDBUS_ITEM_SIZE(len);
795 cmd = g_alloca0 (size);
797 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
798 cmd->items[0].type = KDBUS_ITEM_NAME;
799 cmd->flags = kdbus_flags;
800 memcpy (cmd->items[0].str, name, len);
802 ret = ioctl(worker->fd, KDBUS_CMD_NAME_ACQUIRE, cmd);
806 status = G_BUS_REQUEST_NAME_FLAGS_EXISTS;
807 else if (errno == EALREADY)
808 status = G_BUS_REQUEST_NAME_FLAGS_ALREADY_OWNER;
811 g_set_error (error, G_IO_ERROR,
812 g_io_error_from_errno (errno),
813 _("Error while acquiring name: %s"),
819 if (cmd->return_flags & KDBUS_NAME_IN_QUEUE)
820 status = G_BUS_REQUEST_NAME_FLAGS_IN_QUEUE;
822 result = g_variant_new ("(u)", status);
829 * _g_kdbus_ReleaseName:
833 _g_kdbus_ReleaseName (GKDBusWorker *worker,
838 struct kdbus_cmd *cmd;
842 status = G_BUS_RELEASE_NAME_FLAGS_RELEASED;
844 if (!g_dbus_is_name (name))
848 G_DBUS_ERROR_INVALID_ARGS,
849 "Given bus name \"%s\" is not valid", name);
857 G_DBUS_ERROR_INVALID_ARGS,
858 "Cannot release a service starting with ':' such as \"%s\"", name);
862 len = strlen(name) + 1;
863 size = G_STRUCT_OFFSET (struct kdbus_cmd, items) + KDBUS_ITEM_SIZE(len);
864 cmd = g_alloca0 (size);
866 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
867 cmd->items[0].type = KDBUS_ITEM_NAME;
868 memcpy (cmd->items[0].str, name, len);
870 ret = ioctl(worker->fd, KDBUS_CMD_NAME_RELEASE, cmd);
874 status = G_BUS_RELEASE_NAME_FLAGS_NON_EXISTENT;
875 else if (errno == EADDRINUSE)
876 status = G_BUS_RELEASE_NAME_FLAGS_NOT_OWNER;
879 g_set_error (error, G_IO_ERROR,
880 g_io_error_from_errno (errno),
881 _("Error while releasing name: %s"),
887 result = g_variant_new ("(u)", status);
898 _g_kdbus_GetBusId (GKDBusWorker *worker,
905 result_str = g_string_new (NULL);
907 for (cnt=0; cnt<16; cnt++)
908 g_string_append_printf (result_str, "%02x", worker->bus_id[cnt]);
910 result = g_variant_new ("(s)", result_str->str);
911 g_string_free (result_str, TRUE);
918 * _g_kdbus_GetListNames:
922 _g_kdbus_GetListNames (GKDBusWorker *worker,
923 guint list_name_type,
927 GVariantBuilder *builder;
928 struct kdbus_info *name_list, *name;
929 struct kdbus_cmd_list cmd = {
939 cmd.flags = KDBUS_LIST_ACTIVATORS; /* ListActivatableNames */
941 cmd.flags = KDBUS_LIST_UNIQUE | KDBUS_LIST_NAMES; /* ListNames */
943 ret = ioctl(worker->fd, KDBUS_CMD_LIST, &cmd);
949 _("Error listing names"));
953 name_list = (struct kdbus_info *) ((guint8 *) worker->kdbus_buffer + cmd.offset);
954 builder = g_variant_builder_new (G_VARIANT_TYPE ("as"));
956 KDBUS_FOREACH(name, name_list, cmd.list_size)
958 struct kdbus_item *item;
959 const gchar *item_name = "";
961 if ((cmd.flags & KDBUS_LIST_UNIQUE) && name->id != prev_id)
963 GString *unique_name;
965 unique_name = g_string_new (NULL);
966 g_string_printf (unique_name, ":1.%llu", name->id);
967 g_variant_builder_add (builder, "s", unique_name->str);
968 g_string_free (unique_name,TRUE);
972 KDBUS_ITEM_FOREACH(item, name, items)
973 if (item->type == KDBUS_ITEM_OWNED_NAME)
974 item_name = item->name.name;
976 if (g_dbus_is_name (item_name))
977 g_variant_builder_add (builder, "s", item_name);
980 result = g_variant_new ("(as)", builder);
981 g_variant_builder_unref (builder);
983 g_kdbus_free_data (worker, cmd.offset);
989 * _g_kdbus_NameHasOwner_internal:
993 g_kdbus_NameHasOwner_internal (GKDBusWorker *worker,
997 struct kdbus_cmd_info *cmd;
1001 if (g_dbus_is_unique_name(name))
1003 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items);
1004 cmd = g_alloca0 (size);
1005 cmd->id = g_ascii_strtoull (name+3, NULL, 10);
1009 len = strlen(name) + 1;
1010 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items) + KDBUS_ITEM_SIZE(len);
1011 cmd = g_alloca0 (size);
1012 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
1013 cmd->items[0].type = KDBUS_ITEM_NAME;
1014 memcpy (cmd->items[0].str, name, len);
1018 ret = ioctl(worker->fd, KDBUS_CMD_CONN_INFO, cmd);
1019 g_kdbus_free_data (worker, cmd->offset);
1029 * _g_kdbus_GetListQueuedOwners:
1033 _g_kdbus_GetListQueuedOwners (GKDBusWorker *worker,
1038 GVariantBuilder *builder;
1039 GString *unique_name;
1042 struct kdbus_info *name_list, *kname;
1043 struct kdbus_cmd_list cmd = {
1044 .size = sizeof(cmd),
1045 .flags = KDBUS_LIST_QUEUED
1048 if (!g_dbus_is_name (name))
1052 G_DBUS_ERROR_INVALID_ARGS,
1053 "Given bus name \"%s\" is not valid", name);
1057 if (!g_kdbus_NameHasOwner_internal (worker, name, error))
1061 G_DBUS_ERROR_NAME_HAS_NO_OWNER,
1062 "Could not get owner of name '%s': no such name", name);
1066 ret = ioctl(worker->fd, KDBUS_CMD_LIST, &cmd);
1071 G_DBUS_ERROR_FAILED,
1072 _("Error listing names"));
1076 name_list = (struct kdbus_info *) ((guint8 *) worker->kdbus_buffer + cmd.offset);
1078 unique_name = g_string_new (NULL);
1079 builder = g_variant_builder_new (G_VARIANT_TYPE ("as"));
1080 KDBUS_FOREACH(kname, name_list, cmd.list_size)
1082 struct kdbus_item *item;
1083 const char *item_name = "";
1085 KDBUS_ITEM_FOREACH(item, kname, items)
1086 if (item->type == KDBUS_ITEM_NAME)
1087 item_name = item->str;
1089 if (strcmp(item_name, name))
1092 g_string_printf (unique_name, ":1.%llu", kname->id);
1093 g_variant_builder_add (builder, "s", item_name);
1096 result = g_variant_new ("(as)", builder);
1097 g_variant_builder_unref (builder);
1098 g_string_free (unique_name,TRUE);
1100 g_kdbus_free_data (worker, cmd.offset);
1106 * g_kdbus_GetConnInfo_internal:
1110 g_kdbus_GetConnInfo_internal (GKDBusWorker *worker,
1117 struct kdbus_cmd_info *cmd;
1118 struct kdbus_info *conn_info;
1119 struct kdbus_item *item;
1125 if (!g_dbus_is_name (name))
1129 G_DBUS_ERROR_INVALID_ARGS,
1130 "Given bus name \"%s\" is not valid", name);
1134 if (!g_kdbus_NameHasOwner_internal (worker, name, error))
1138 G_DBUS_ERROR_NAME_HAS_NO_OWNER,
1139 "Could not get owner of name '%s': no such name", name);
1143 if (g_dbus_is_unique_name(name))
1145 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items);
1146 cmd = g_alloca0 (size);
1147 cmd->id = g_ascii_strtoull (name+3, NULL, 10);
1151 len = strlen(name) + 1;
1152 size = G_STRUCT_OFFSET (struct kdbus_cmd_info, items) + KDBUS_ITEM_SIZE(len);
1153 cmd = g_alloca0 (size);
1154 cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + len;
1155 cmd->items[0].type = KDBUS_ITEM_NAME;
1156 memcpy (cmd->items[0].str, name, len);
1159 cmd->attach_flags = _KDBUS_ATTACH_ALL;
1162 ret = ioctl(worker->fd, KDBUS_CMD_CONN_INFO, cmd);
1167 G_DBUS_ERROR_FAILED,
1168 _("Could not get connection info"));
1172 conn_info = (struct kdbus_info *) ((guint8 *) worker->kdbus_buffer + cmd->offset);
1175 if (conn_info->flags & KDBUS_HELLO_ACTIVATOR)
1179 if (flag == G_BUS_CREDS_UNIQUE_NAME)
1181 GString *unique_name;
1183 unique_name = g_string_new (NULL);
1184 g_string_printf (unique_name, ":1.%llu", (unsigned long long) conn_info->id);
1185 result = g_variant_new ("(s)", unique_name->str);
1186 g_string_free (unique_name,TRUE);
1190 KDBUS_ITEM_FOREACH(item, conn_info, items)
1194 case KDBUS_ITEM_PIDS:
1196 if (flag == G_BUS_CREDS_PID)
1198 guint pid = item->pids.pid;
1199 result = g_variant_new ("(u)", pid);
1203 case KDBUS_ITEM_CREDS:
1205 if (flag == G_BUS_CREDS_UID)
1207 guint uid = item->creds.uid;
1208 result = g_variant_new ("(u)", uid);
1212 case KDBUS_ITEM_SECLABEL:
1213 case KDBUS_ITEM_PID_COMM:
1214 case KDBUS_ITEM_TID_COMM:
1215 case KDBUS_ITEM_EXE:
1216 case KDBUS_ITEM_CMDLINE:
1217 case KDBUS_ITEM_CGROUP:
1218 case KDBUS_ITEM_CAPS:
1219 case KDBUS_ITEM_AUDIT:
1220 case KDBUS_ITEM_CONN_DESCRIPTION:
1221 case KDBUS_ITEM_AUXGROUPS:
1222 case KDBUS_ITEM_OWNED_NAME:
1228 g_kdbus_free_data (worker, cmd->offset);
1234 * _g_kdbus_GetNameOwner:
1238 _g_kdbus_GetNameOwner (GKDBusWorker *worker,
1242 return g_kdbus_GetConnInfo_internal (worker,
1244 G_BUS_CREDS_UNIQUE_NAME,
1250 * _g_kdbus_GetConnectionUnixProcessID:
1254 _g_kdbus_GetConnectionUnixProcessID (GKDBusWorker *worker,
1258 return g_kdbus_GetConnInfo_internal (worker,
1266 * _g_kdbus_GetConnectionUnixUser:
1270 _g_kdbus_GetConnectionUnixUser (GKDBusWorker *worker,
1274 return g_kdbus_GetConnInfo_internal (worker,
1282 * g_kdbus_bloom_add_data:
1283 * Based on bus-bloom.c from systemd
1284 * http://cgit.freedesktop.org/systemd/systemd/tree/src/libsystemd/sd-bus/bus-bloom.c
1287 g_kdbus_bloom_add_data (GKDBusWorker *worker,
1288 guint64 bloom_data [],
1294 guint bytes_num = 0;
1300 bit_num = worker->bloom_size * 8;
1303 bytes_num = ((__builtin_clzll(bit_num) ^ 63U) + 7) / 8;
1305 for (cnt_1 = 0; cnt_1 < (worker->bloom_n_hash); cnt_1++)
1307 for (cnt_2 = 0; cnt_2 < bytes_num; cnt_2++)
1311 _g_siphash24(hash, data, n, hash_keys[cnt_1++]);
1315 p = (p << 8ULL) | (guint64) hash[8 - c];
1320 bloom_data[p >> 6] |= 1ULL << (p & 63);
1326 * g_kdbus_bloom_add_pair:
1330 g_kdbus_bloom_add_pair (GKDBusWorker *worker,
1331 guint64 bloom_data [],
1332 const gchar *parameter,
1338 size = strlen(parameter) + strlen(value) + 1;
1342 strcpy(stpcpy(stpcpy(buf, parameter), ":"), value);
1343 g_kdbus_bloom_add_data(worker, bloom_data, buf, size);
1348 * g_kdbus_bloom_add_prefixes:
1352 g_kdbus_bloom_add_prefixes (GKDBusWorker *worker,
1353 guint64 bloom_data [],
1354 const gchar *parameter,
1361 size = strlen(parameter) + strlen(value) + 1;
1365 strcpy(stpcpy(stpcpy(buf, parameter), ":"), value);
1370 last_sep = strrchr(buf, separator);
1371 if (!last_sep || last_sep == buf)
1375 g_kdbus_bloom_add_data(worker, bloom_data, buf, last_sep-buf);
1381 * _g_kdbus_AddMatch:
1385 _g_kdbus_AddMatch (GKDBusWorker *worker,
1386 const gchar *match_rule,
1390 MatchElement *element;
1391 const gchar *sender_name;
1392 gsize sender_len, size;
1393 struct kdbus_cmd_match *cmd;
1394 struct kdbus_item *item;
1400 if (match_rule[0] == '-')
1403 match = match_new (match_rule);
1411 src_id = KDBUS_MATCH_ID_ANY;
1413 bloom = g_alloca0 (worker->bloom_size);
1414 size = KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_cmd_match, items));
1415 match = match_new (match_rule);
1417 for (cnt = 0; cnt < match->n_elements; cnt++)
1419 element = &match->elements[cnt];
1420 switch (element->type)
1422 case MATCH_ELEMENT_SENDER:
1423 if (g_dbus_is_unique_name(element->value))
1425 src_id = g_ascii_strtoull ((element->value)+3, NULL, 10);
1426 size += KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, id) + sizeof(src_id));
1428 else if (g_dbus_is_name (element->value))
1430 sender_name = element->value;
1431 sender_len = strlen(element->value) + 1;
1432 size += KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, str) + sender_len);
1436 g_critical ("Error while adding a match");
1442 case MATCH_ELEMENT_TYPE:
1443 g_kdbus_bloom_add_pair (worker, bloom, "message-type", element->value);
1446 case MATCH_ELEMENT_INTERFACE:
1447 g_kdbus_bloom_add_pair (worker, bloom, "interface", element->value);
1450 case MATCH_ELEMENT_MEMBER:
1451 g_kdbus_bloom_add_pair (worker, bloom, "member", element->value);
1454 case MATCH_ELEMENT_PATH:
1455 g_kdbus_bloom_add_pair (worker, bloom, "path", element->value);
1458 case MATCH_ELEMENT_PATH_NAMESPACE:
1459 if (g_strcmp0 (element->value, "/"))
1460 g_kdbus_bloom_add_pair (worker, bloom, "path-slash-prefix", element->value);
1463 case MATCH_ELEMENT_ARGN:
1464 asprintf (&type, "arg%u", element->arg);
1465 g_kdbus_bloom_add_pair (worker, bloom, type, element->value);
1469 case MATCH_ELEMENT_ARGNPATH:
1470 asprintf (&type, "arg%u-slash-prefix", element->arg);
1471 g_kdbus_bloom_add_pair (worker, bloom, type, element->value);
1475 case MATCH_ELEMENT_ARG0NAMESPACE:
1476 g_kdbus_bloom_add_pair (worker, bloom, "arg0-dot-prefix", element->value);
1479 case MATCH_ELEMENT_DESTINATION:
1480 case MATCH_ELEMENT_EAVESDROP:
1485 size += KDBUS_ALIGN8 (G_STRUCT_OFFSET (struct kdbus_item, data64) + worker->bloom_size);
1486 cmd = g_alloca0 (size);
1488 cmd->cookie = cookie;
1491 item->size = G_STRUCT_OFFSET(struct kdbus_item, data64) + worker->bloom_size;
1492 item->type = KDBUS_ITEM_BLOOM_MASK;
1493 memcpy(item->data64, bloom, worker->bloom_size);
1494 item = KDBUS_ITEM_NEXT(item);
1496 if (src_id != KDBUS_MATCH_ID_ANY)
1498 item->size = G_STRUCT_OFFSET (struct kdbus_item, id) + sizeof(src_id);
1499 item->type = KDBUS_ITEM_ID;
1501 item = KDBUS_ITEM_NEXT(item);
1506 item->size = G_STRUCT_OFFSET (struct kdbus_item, str) + sender_len;
1507 item->type = KDBUS_ITEM_NAME;
1508 memcpy (item->str, sender_name, sender_len);
1511 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd);
1513 g_critical ("Error while adding a match: %d", (int) errno);
1520 * _g_kdbus_RemoveMatch:
1524 _g_kdbus_RemoveMatch (GKDBusWorker *worker,
1527 struct kdbus_cmd_match cmd = {
1528 .size = sizeof(cmd),
1533 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_REMOVE, &cmd);
1535 g_warning ("Error while removing a match: %d\n", errno);
1540 * _g_kdbus_subscribe_name_acquired:
1544 _g_kdbus_subscribe_name_owner_changed (GKDBusWorker *worker,
1546 const gchar *old_name,
1547 const gchar *new_name,
1550 struct kdbus_item *item;
1551 struct kdbus_cmd_match *cmd;
1555 guint64 new_id = KDBUS_MATCH_ID_ANY;
1558 len = strlen(name) + 1;
1562 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1563 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1564 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1566 cmd = g_alloca0 (size);
1568 cmd->cookie = cookie;
1571 if (old_name == NULL)
1573 old_id = KDBUS_MATCH_ID_ANY;
1577 if (g_dbus_is_unique_name(old_name))
1578 old_id = strtoull (old_name + 3, NULL, 10);
1583 if (new_name == NULL)
1585 new_id = KDBUS_MATCH_ID_ANY;
1589 if (g_dbus_is_unique_name(new_name))
1590 new_id = strtoull (new_name + 3, NULL, 10);
1595 cmd = g_alloca0 (size);
1597 cmd->cookie = cookie;
1600 /* KDBUS_ITEM_NAME_CHANGE */
1601 item->type = KDBUS_ITEM_NAME_CHANGE;
1602 item->name_change.old_id.id = old_id;
1603 item->name_change.new_id.id = new_id;
1606 memcpy(item->name_change.name, name, len);
1608 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1609 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1610 item = KDBUS_ITEM_NEXT(item);
1612 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd);
1614 g_warning ("ERROR - %d\n", (int) errno);
1619 * _g_kdbus_subscribe_name_acquired:
1623 _g_kdbus_subscribe_name_acquired (GKDBusWorker *worker,
1627 struct kdbus_item *item;
1628 struct kdbus_cmd_match *cmd;
1632 g_print ("Subscribe 'NameAcquired': name - %s ; cookie - %d\n", name, (int)cookie);
1634 len = strlen(name) + 1;
1638 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1639 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1640 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1642 cmd = g_alloca0 (size);
1644 cmd->cookie = cookie;
1647 /* KDBUS_ITEM_NAME_ADD */
1648 item->type = KDBUS_ITEM_NAME_ADD;
1649 item->name_change.old_id.id = KDBUS_MATCH_ID_ANY;
1650 item->name_change.new_id.id = worker->unique_id;
1653 memcpy(item->name_change.name, name, len);
1655 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1656 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1657 item = KDBUS_ITEM_NEXT(item);
1659 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd);
1661 g_warning ("ERROR - %d\n", (int) errno);
1663 _g_kdbus_subscribe_name_owner_changed (worker, name, NULL, worker->unique_name, cookie);
1668 * _g_kdbus_subscribe_name_lost:
1672 _g_kdbus_subscribe_name_lost (GKDBusWorker *worker,
1676 struct kdbus_item *item;
1677 struct kdbus_cmd_match *cmd;
1681 g_print ("Subscribe 'NameLost': name - %s ; cookie - %d\n", name, (int)cookie);
1683 len = strlen(name) + 1;
1687 size = KDBUS_ALIGN8(G_STRUCT_OFFSET (struct kdbus_cmd_match, items) +
1688 G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1689 G_STRUCT_OFFSET (struct kdbus_notify_name_change, name) + len);
1691 cmd = g_alloca0 (size);
1693 cmd->cookie = cookie;
1696 /* KDBUS_ITEM_NAME_REMOVE */
1697 item->type = KDBUS_ITEM_NAME_REMOVE;
1698 item->name_change.old_id.id = worker->unique_id;
1699 item->name_change.new_id.id = KDBUS_MATCH_ID_ANY;
1702 memcpy(item->name_change.name, name, len);
1704 item->size = G_STRUCT_OFFSET (struct kdbus_item, name_change) +
1705 G_STRUCT_OFFSET(struct kdbus_notify_name_change, name) + len;
1706 item = KDBUS_ITEM_NEXT(item);
1708 ret = ioctl(worker->fd, KDBUS_CMD_MATCH_ADD, cmd);
1710 g_warning ("ERROR - %d\n", (int) errno);
1712 _g_kdbus_subscribe_name_owner_changed (worker, name, worker->unique_name, NULL, cookie);
1717 * _g_kdbus_unsubscribe_name_acquired:
1721 _g_kdbus_unsubscribe_name_acquired (GKDBusWorker *worker,
1724 g_print ("Unsubscribe 'NameAcquired': cookie - %d\n", (int)cookie);
1725 _g_kdbus_RemoveMatch (worker, cookie);
1730 * _g_kdbus_unsubscribe_name_lost:
1734 _g_kdbus_unsubscribe_name_lost (GKDBusWorker *worker,
1737 g_print ("Unsubscribe 'NameLost': cookie - %d\n", (int)cookie);
1738 _g_kdbus_RemoveMatch (worker, cookie);
1743 * g_kdbus_append_payload_bloom:
1746 static struct kdbus_bloom_filter *
1747 g_kdbus_append_bloom (struct kdbus_item **item,
1750 struct kdbus_item *bloom_item;
1752 bloom_item = KDBUS_ALIGN8_PTR(*item);
1753 bloom_item->size = G_STRUCT_OFFSET (struct kdbus_item, bloom_filter) +
1754 G_STRUCT_OFFSET (struct kdbus_bloom_filter, data) +
1757 bloom_item->type = KDBUS_ITEM_BLOOM_FILTER;
1759 *item = KDBUS_ITEM_NEXT(bloom_item);
1760 return &bloom_item->bloom_filter;
1765 * g_kdbus_setup_bloom:
1766 * Based on bus-bloom.c from systemd
1767 * http://cgit.freedesktop.org/systemd/systemd/tree/src/libsystemd/sd-bus/bus-bloom.c
1770 g_kdbus_setup_bloom (GKDBusWorker *worker,
1771 GDBusMessage *dbus_msg,
1772 struct kdbus_bloom_filter *bloom_filter)
1776 const gchar *message_type;
1777 const gchar *interface;
1778 const gchar *member;
1783 body = g_dbus_message_get_body (dbus_msg);
1784 message_type = _g_dbus_enum_to_string (G_TYPE_DBUS_MESSAGE_TYPE, g_dbus_message_get_message_type (dbus_msg));
1785 interface = g_dbus_message_get_interface (dbus_msg);
1786 member = g_dbus_message_get_member (dbus_msg);
1787 path = g_dbus_message_get_path (dbus_msg);
1789 bloom_data = bloom_filter->data;
1790 memset (bloom_data, 0, worker->bloom_size);
1791 bloom_filter->generation = 0;
1793 g_kdbus_bloom_add_pair(worker, bloom_data, "message-type", message_type);
1796 g_kdbus_bloom_add_pair(worker, bloom_data, "interface", interface);
1799 g_kdbus_bloom_add_pair(worker, bloom_data, "member", member);
1803 g_kdbus_bloom_add_pair(worker, bloom_data, "path", path);
1804 g_kdbus_bloom_add_pair(worker, bloom_data, "path-slash-prefix", path);
1805 g_kdbus_bloom_add_prefixes(worker, bloom_data, "path-slash-prefix", path, '/');
1810 const GVariantType *body_type;
1811 const GVariantType *arg_type;
1814 body_type = g_variant_get_type (body);
1816 for (arg_type = g_variant_type_first (body_type), cnt = 0;
1818 arg_type = g_variant_type_next (arg_type), cnt++)
1820 gchar type_char = g_variant_type_peek_string (arg_type)[0];
1821 gchar buf[sizeof("arg")-1 + 2 + sizeof("-slash-prefix")];
1826 if (type_char != 's' && type_char != 'o')
1827 /* XXX: kdbus docs say "stop after first non-string" but I
1828 * think they're wrong (vs. dbus-1 compat)...
1832 child = g_variant_get_child_value (body, cnt);
1833 str = g_variant_get_string (child, NULL);
1835 e = stpcpy(buf, "arg");
1837 *(e++) = '0' + (char) cnt;
1840 *(e++) = '0' + (char) (cnt / 10);
1841 *(e++) = '0' + (char) (cnt % 10);
1844 /* We add this one for both strings and object paths */
1845 strcpy(e, "-slash-prefix");
1846 g_kdbus_bloom_add_prefixes(worker, bloom_data, buf, str, '/');
1848 /* But the others are only for strings */
1849 if (type_char == 's')
1851 strcpy(e, "-dot-prefix");
1852 g_kdbus_bloom_add_prefixes(worker, bloom_data, buf, str, '.');
1855 g_kdbus_bloom_add_pair(worker, bloom_data, buf, str);
1858 g_variant_unref (child);
1869 g_kdbus_translate_id_change (GKDBusWorker *worker,
1870 struct kdbus_item *item)
1872 g_error ("TODO: translate_id_change\n");
1881 g_kdbus_translate_name_change (GKDBusWorker *worker,
1882 struct kdbus_item *item)
1884 GDBusMessage *signal_message;
1886 signal_message = NULL;
1889 if ((item->type == KDBUS_ITEM_NAME_ADD) ||
1890 (item->type == KDBUS_ITEM_NAME_CHANGE && ((guint64)item->name_change.new_id.id == worker->unique_id)))
1892 signal_message = g_dbus_message_new_signal ("/org/freedesktop/DBus",
1893 "org.freedesktop.DBus",
1896 g_dbus_message_set_sender (signal_message, "org.freedesktop.DBus");
1897 g_dbus_message_set_body (signal_message,
1898 g_variant_new ("(s)", item->name_change.name));
1900 (* worker->message_received_callback) (signal_message, worker->user_data);
1901 g_object_unref (signal_message);
1905 if ((item->type == KDBUS_ITEM_NAME_REMOVE) ||
1906 (item->type == KDBUS_ITEM_NAME_CHANGE && ((guint64)item->name_change.old_id.id == worker->unique_id)))
1908 GDBusMessage *signal_message;
1910 signal_message = g_dbus_message_new_signal ("/org/freedesktop/DBus",
1911 "org.freedesktop.DBus",
1914 g_dbus_message_set_sender (signal_message, "org.freedesktop.DBus");
1915 g_dbus_message_set_body (signal_message,
1916 g_variant_new ("(s)", item->name_change.name));
1918 (* worker->message_received_callback) (signal_message, worker->user_data);
1919 g_object_unref (signal_message);
1922 /* NameOwnerChanged */
1932 g_kdbus_translate_kernel_reply (GKDBusWorker *worker,
1933 struct kdbus_item *item)
1935 g_error ("TODO: translate_kernel_reply\n");
1940 * g_kdbus_decode_kernel_msg:
1944 g_kdbus_decode_kernel_msg (GKDBusWorker *worker,
1945 struct kdbus_msg *msg)
1947 struct kdbus_item *item = NULL;
1949 KDBUS_ITEM_FOREACH(item, msg, items)
1953 case KDBUS_ITEM_ID_ADD:
1954 case KDBUS_ITEM_ID_REMOVE:
1955 g_kdbus_translate_id_change (worker, item);
1958 case KDBUS_ITEM_NAME_ADD:
1959 case KDBUS_ITEM_NAME_REMOVE:
1960 case KDBUS_ITEM_NAME_CHANGE:
1961 g_kdbus_translate_name_change (worker, item);
1964 case KDBUS_ITEM_REPLY_TIMEOUT:
1965 case KDBUS_ITEM_REPLY_DEAD:
1966 g_kdbus_translate_kernel_reply (worker, item);
1969 case KDBUS_ITEM_TIMESTAMP:
1973 g_warning ("Unknown field in kernel message - %lld", item->type);
1978 /* Override information from the user header with data from the kernel */
1979 g_string_printf (worker->msg_sender, "org.freedesktop.DBus");
1981 /* for destination */
1982 if (worker->kmsg->dst_id == KDBUS_DST_ID_BROADCAST)
1983 /* for broadcast messages we don't have to set destination */
1985 else if (worker->kmsg->dst_id == KDBUS_DST_ID_NAME)
1986 g_string_printf (worker->msg_destination, ":1.%" G_GUINT64_FORMAT, (guint64) worker->unique_id);
1988 g_string_printf (worker->msg_destination, ":1.%" G_GUINT64_FORMAT, (guint64) worker->kmsg->dst_id);
1994 * g_kdbus_decode_dbus_msg:
1997 static GDBusMessage *
1998 g_kdbus_decode_dbus_msg (GKDBusWorker *worker,
1999 struct kdbus_msg *msg)
2001 GDBusMessage *message;
2002 struct kdbus_item *item;
2003 gssize data_size = 0;
2004 GArray *body_vectors;
2010 GVariantIter *fields_iter;
2011 guint8 endianness, type, flags, version;
2017 message = g_dbus_message_new ();
2019 body_vectors = g_array_new (FALSE, FALSE, sizeof (GVariantVector));
2021 tmp = g_strdup_printf (":1.%"G_GUINT64_FORMAT, (guint64) msg->src_id);
2022 g_dbus_message_set_sender (message, tmp);
2028 KDBUS_ITEM_FOREACH(item, msg, items)
2030 if (item->size <= KDBUS_ITEM_HEADER_SIZE)
2031 g_error("[KDBUS] %llu bytes - invalid data record\n", item->size);
2033 data_size = item->size - KDBUS_ITEM_HEADER_SIZE;
2037 /* KDBUS_ITEM_DST_NAME */
2038 case KDBUS_ITEM_DST_NAME:
2039 /* Classic D-Bus doesn't make this known to the receiver, so
2040 * we don't do it here either (for compatibility with the
2045 /* KDBUS_ITEM_PALOAD_OFF */
2046 case KDBUS_ITEM_PAYLOAD_OFF:
2048 GVariantVector vector;
2051 /* We want to make sure the bytes are aligned the same as
2052 * they would be if they appeared in a contiguously
2053 * allocated chunk of aligned memory.
2055 * We decide what the alignment 'should' be by consulting
2056 * body_size, which has been tracking the total size of the
2057 * message up to this point.
2059 * We then play around with the pointer by removing as many
2060 * bytes as required to get it to the proper alignment (and
2061 * copy extra bytes accordingly). This means that we will
2062 * grab some extra data in the 'bytes', but it won't be
2063 * shared with GVariant (which means there is no chance of
2064 * it being accidentally retransmitted).
2066 * The kernel does the same thing, so make sure we get the
2067 * expected result. Because of the kernel doing the same,
2068 * the result is that we will always be rounding-down to a
2069 * multiple of 8 for the pointer, which means that the
2070 * pointer will always be valid, assuming the original
2073 * We could fix this with a new GBytes constructor that took
2074 * 'flavour' as a parameter, but it's not worth it...
2076 flavour = body_size & 7;
2077 g_assert ((item->vec.offset & 7) == flavour);
2079 vector.gbytes = g_bytes_new (((guchar *) msg) + item->vec.offset - flavour, item->vec.size + flavour);
2080 vector.data.pointer = g_bytes_get_data (vector.gbytes, NULL);
2081 vector.data.pointer += flavour;
2082 vector.size = item->vec.size;
2084 g_array_append_val (body_vectors, vector);
2085 body_size += vector.size;
2089 /* KDBUS_ITEM_PAYLOAD_MEMFD */
2090 case KDBUS_ITEM_PAYLOAD_MEMFD:
2092 GVariantVector vector;
2096 vector.gbytes = g_bytes_new_take_zero_copy_fd (item->memfd.fd);
2097 data = g_bytes_get_data (vector.gbytes, &size);
2099 g_assert (item->memfd.start + item->memfd.size <= size);
2101 vector.data.pointer = data + item->memfd.start;
2102 vector.size = item->memfd.size;
2104 g_array_append_val (body_vectors, vector);
2105 body_size += vector.size;
2109 /* KDBUS_ITEM_FDS */
2110 case KDBUS_ITEM_FDS:
2112 GUnixFDList *fd_list;
2114 fd_list = g_unix_fd_list_new_from_array (item->fds, data_size / sizeof (int));
2115 g_dbus_message_set_unix_fd_list (message, fd_list);
2116 g_object_unref (fd_list);
2120 /* All of the following items, like CMDLINE,
2121 CGROUP, etc. need some GDBUS API extensions and
2122 should be implemented in the future */
2123 case KDBUS_ITEM_TIMESTAMP:
2125 /* g_print ("time: seq %llu mon %llu real %llu\n",
2126 item->timestamp.seqnum, item->timestamp.monotonic_ns, item->timestamp.realtime_ns); */
2128 //g_dbus_message_set_timestamp (message, item->timestamp.monotonic_ns / 1000);
2129 //g_dbus_message_set_serial (message, item->timestamp.seqnum);
2133 case KDBUS_ITEM_CREDS:
2135 /* g_print ("creds: u%llu eu %llu su%llu fsu%llu g%llu eg%llu sg%llu fsg%llu\n",
2136 item->creds.uid, item->creds.euid, item->creds.suid, item->creds.fsuid,
2137 item->creds.gid, item->creds.egid, item->creds.sgid, item->creds.fsgid); */
2141 case KDBUS_ITEM_PIDS:
2142 case KDBUS_ITEM_PID_COMM:
2143 case KDBUS_ITEM_TID_COMM:
2144 case KDBUS_ITEM_EXE:
2145 case KDBUS_ITEM_CMDLINE:
2146 case KDBUS_ITEM_CGROUP:
2147 case KDBUS_ITEM_AUDIT:
2148 case KDBUS_ITEM_CAPS:
2149 case KDBUS_ITEM_SECLABEL:
2150 case KDBUS_ITEM_CONN_DESCRIPTION:
2151 case KDBUS_ITEM_AUXGROUPS:
2152 case KDBUS_ITEM_OWNED_NAME:
2153 case KDBUS_ITEM_NAME:
2154 //g_print ("unhandled %04x\n", (int) item->type);
2158 g_error ("[KDBUS] DBUS_PAYLOAD: Unknown filed - %lld", item->type);
2163 body = GLIB_PRIVATE_CALL(g_variant_from_vectors) (G_VARIANT_TYPE ("((yyyyuta{tv})v)"),
2164 (GVariantVector *) body_vectors->data,
2165 body_vectors->len, body_size, FALSE);
2168 for (i = 0; i < body_vectors->len; i++)
2169 g_bytes_unref (g_array_index (body_vectors, GVariantVector, i).gbytes);
2171 g_array_free (body_vectors, TRUE);
2173 parts[0] = g_variant_get_child_value (body, 0);
2174 parts[1] = g_variant_get_child_value (body, 1);
2175 g_variant_unref (body);
2177 body = g_variant_get_variant (parts[1]);
2178 g_variant_unref (parts[1]);
2179 g_dbus_message_set_body (message, body);
2180 g_variant_unref (body);
2182 g_variant_get (parts[0], "(yyyyuta{tv})", &endianness, &type, &flags, &version, NULL, &serial, &fields_iter);
2183 g_variant_unref (parts[0]);
2185 while (g_variant_iter_loop (fields_iter, "{tv}", &key, &value))
2186 g_dbus_message_set_header (message, key, value);
2188 g_dbus_message_set_flags (message, flags);
2189 g_dbus_message_set_serial (message, serial);
2190 g_dbus_message_set_message_type (message, type);
2192 //g_print ("Received:\n%s\n", g_dbus_message_print (message, 2));
2194 (* worker->message_received_callback) (message, worker->user_data);
2196 g_object_unref (message);
2207 _g_kdbus_receive (GKDBusWorker *kdbus,
2208 GCancellable *cancellable,
2211 struct kdbus_cmd_recv recv;
2212 struct kdbus_msg *msg;
2214 memset (&recv, 0, sizeof recv);
2215 recv.size = sizeof (recv);
2217 if (g_cancellable_set_error_if_cancelled (cancellable, error))
2221 if (ioctl(kdbus->fd, KDBUS_CMD_RECV, &recv) < 0)
2226 if (errno == EAGAIN)
2229 g_warning ("in holding pattern over %d %d\n", kdbus->fd, errno);
2233 g_set_error (error, G_IO_ERROR,
2234 g_io_error_from_errno (errno),
2235 _("Error while receiving message: %s"),
2236 g_strerror (errno));
2240 msg = (struct kdbus_msg *)((guint8 *)kdbus->kdbus_buffer + recv.msg.offset);
2242 if (msg->payload_type == KDBUS_PAYLOAD_DBUS)
2243 g_kdbus_decode_dbus_msg (kdbus, msg);
2244 else if (msg->payload_type == KDBUS_PAYLOAD_KERNEL)
2245 g_kdbus_decode_kernel_msg (kdbus, msg);
2250 G_DBUS_ERROR_FAILED,
2251 _("Received unknown payload type"));
2255 g_kdbus_free_data (kdbus, recv.msg.offset);
2261 g_kdbus_msg_append_item (struct kdbus_msg *msg,
2266 struct kdbus_item *item;
2269 item_size = size + G_STRUCT_OFFSET(struct kdbus_item, data);
2271 if (msg->size + item_size > KDBUS_MSG_MAX_SIZE)
2275 msg->size += (-msg->size) & 7;
2276 item = (struct kdbus_item *) ((guchar *) msg + msg->size);
2278 item->size = item_size;
2279 memcpy (item->data, data, size);
2281 msg->size += item_size;
2287 g_kdbus_msg_append_payload_vec (struct kdbus_msg *msg,
2291 struct kdbus_vec vec = {
2293 .address = (gsize) data
2296 return g_kdbus_msg_append_item (msg, KDBUS_ITEM_PAYLOAD_VEC, &vec, sizeof vec);
2300 g_kdbus_msg_append_payload_memfd (struct kdbus_msg *msg,
2305 struct kdbus_memfd mfd = {
2311 return g_kdbus_msg_append_item (msg, KDBUS_ITEM_PAYLOAD_MEMFD, &mfd, sizeof mfd);
2315 #include "dbusheader.h"
2317 void dump_header (gconstpointer data, gsize size) ;
2319 dump_header (gconstpointer data,
2322 GDBusMessageHeaderFieldsIterator iter;
2323 GDBusMessageHeader header;
2325 header = g_dbus_message_header_new (data, size);
2326 g_print ("header e/%c t/%u f/x%x v/%u s/%"G_GUINT64_FORMAT"\n",
2327 g_dbus_message_header_get_endian (header),
2328 g_dbus_message_header_get_type (header),
2329 g_dbus_message_header_get_flags (header),
2330 g_dbus_message_header_get_version (header),
2331 g_dbus_message_header_get_serial (header));
2333 iter = g_dbus_message_header_iterate_fields (header);
2335 while (g_dbus_message_header_fields_iterator_next (&iter))
2337 const gchar *string;
2341 key = g_dbus_message_header_fields_iterator_get_key (iter);
2345 case G_DBUS_MESSAGE_HEADER_FIELD_PATH:
2346 if (g_dbus_message_header_fields_iterator_get_value_as_object_path (iter, &string))
2347 g_print (" path: %s\n", string);
2349 g_print (" path: <<invalid string>>\n");
2352 case G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE:
2353 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2354 g_print (" interface: %s\n", string);
2356 g_print (" interface: <<invalid string>>\n");
2359 case G_DBUS_MESSAGE_HEADER_FIELD_MEMBER:
2360 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2361 g_print (" member: %s\n", string);
2363 g_print (" member: <<invalid string>>\n");
2366 case G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME:
2367 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2368 g_print (" error: %s\n", string);
2370 g_print (" error: <<invalid string>>\n");
2373 case G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL:
2374 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2375 g_print (" serial: %s\n", string);
2377 g_print (" serial: <<invalid string>>\n");
2380 case G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION:
2381 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2382 g_print (" destination: %s\n", string);
2384 g_print (" destination: <<invalid string>>\n");
2387 case G_DBUS_MESSAGE_HEADER_FIELD_SENDER:
2388 if (g_dbus_message_header_fields_iterator_get_value_as_string (iter, &string))
2389 g_print (" sender: %s\n", string);
2391 g_print (" sender: <<invalid string>>\n");
2395 g_print ("unknown field code %"G_GUINT64_FORMAT"\n", key);
2396 g_assert_not_reached ();
2407 * Returns: size of data sent or -1 when error
2410 _g_kdbus_send (GKDBusWorker *kdbus,
2411 GDBusMessage *message,
2414 struct kdbus_msg *msg = alloca (KDBUS_MSG_MAX_SIZE);
2415 GVariantVectors body_vectors;
2416 struct kdbus_cmd_send send;
2417 const gchar *dst_name;
2419 g_return_val_if_fail (G_IS_KDBUS_WORKER (kdbus), -1);
2421 /* fill in as we go... */
2422 memset (msg, 0, sizeof (struct kdbus_msg));
2423 msg->size = sizeof (struct kdbus_msg);
2424 msg->payload_type = KDBUS_PAYLOAD_DBUS;
2425 msg->src_id = kdbus->unique_id;
2426 msg->cookie = g_dbus_message_get_serial(message);
2428 /* Message destination */
2430 dst_name = g_dbus_message_get_destination (message);
2432 if (dst_name != NULL)
2434 if (g_dbus_is_unique_name (dst_name))
2436 if (dst_name[1] != '1' || dst_name[2] != '.')
2438 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_NAME_HAS_NO_OWNER,
2439 "Invalid unique D-Bus name '%s'", dst_name);
2443 /* We already know that it passes the checks for unique
2444 * names, so no need to perform error checking on strtoull.
2446 msg->dst_id = strtoull (dst_name + 3, NULL, 10);
2451 g_kdbus_msg_append_item (msg, KDBUS_ITEM_DST_NAME, dst_name, strlen (dst_name) + 1);
2452 msg->dst_id = KDBUS_DST_ID_NAME;
2456 msg->dst_id = KDBUS_DST_ID_BROADCAST;
2459 /* File descriptors */
2461 GUnixFDList *fd_list;
2463 fd_list = g_dbus_message_get_unix_fd_list (message);
2465 if (fd_list != NULL)
2470 fds = g_unix_fd_list_peek_fds (fd_list, &n_fds);
2473 g_kdbus_msg_append_item (msg, KDBUS_ITEM_FDS, fds, sizeof (gint) * n_fds);
2479 struct dbus_fixed_header fh;
2480 GHashTableIter header_iter;
2481 GVariantBuilder builder;
2482 gpointer key, value;
2486 fh.endian = (G_BYTE_ORDER == G_LITTLE_ENDIAN) ? 'l': 'B';
2487 fh.type = g_dbus_message_get_message_type (message);
2488 fh.flags = g_dbus_message_get_flags (message);
2491 fh.serial = g_dbus_message_get_serial (message);
2492 parts[0] = g_variant_new_from_data (DBUS_FIXED_HEADER_TYPE, &fh, sizeof fh, TRUE, NULL, NULL);
2494 g_dbus_message_init_header_iter (message, &header_iter);
2495 g_variant_builder_init (&builder, DBUS_EXTENDED_HEADER_TYPE);
2497 /* We set the sender field to the correct value for ourselves */
2498 g_variant_builder_add (&builder, "{tv}",
2499 (guint64) G_DBUS_MESSAGE_HEADER_FIELD_SENDER,
2500 g_variant_new_printf (":1.%"G_GUINT64_FORMAT, kdbus->unique_id));
2502 while (g_hash_table_iter_next (&header_iter, &key, &value))
2504 guint64 key_int = (gsize) key;
2508 /* These are the normal header fields that get passed
2511 case G_DBUS_MESSAGE_HEADER_FIELD_PATH:
2512 case G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE:
2513 case G_DBUS_MESSAGE_HEADER_FIELD_MEMBER:
2514 case G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME:
2515 case G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL:
2516 case G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION:
2517 g_variant_builder_add (&builder, "{tv}", key_int, value);
2518 /* This is a little bit gross.
2520 * We must send the header part of the message in a single
2521 * vector as per kdbus rules, but the GVariant serialiser
2522 * code will split any item >= 128 bytes into its own
2523 * vector to save the copy.
2525 * No header field should be that big anyway... right?
2527 g_assert_cmpint (g_variant_get_size (value), <, 128);
2530 /* We send this one unconditionally, but set it ourselves */
2531 case G_DBUS_MESSAGE_HEADER_FIELD_SENDER:
2534 /* We don't send these at all in GVariant format */
2535 case G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE:
2536 case G_DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS:
2540 g_assert_not_reached ();
2543 parts[1] = g_variant_builder_end (&builder);
2545 body = g_dbus_message_get_body (message);
2547 body = g_variant_new ("()");
2548 parts[2] = g_variant_new_variant (body);
2550 body = g_variant_ref_sink (g_variant_new_tuple (parts, G_N_ELEMENTS (parts)));
2551 GLIB_PRIVATE_CALL(g_variant_to_vectors) (body, &body_vectors);
2553 /* Sanity check to make sure the header is really contiguous:
2555 * - we must have at least one vector in the output
2556 * - the first vector must completely contain at least the header
2558 g_assert_cmpint (body_vectors.vectors->len, >, 0);
2559 g_assert_cmpint (g_array_index (body_vectors.vectors, GVariantVector, 0).size, >=,
2560 g_variant_get_size (parts[0]) + g_variant_get_size (parts[1]));
2562 g_variant_unref (body);
2568 for (i = 0; i < body_vectors.vectors->len; i++)
2570 GVariantVector vector = g_array_index (body_vectors.vectors, GVariantVector, i);
2576 fd = g_bytes_get_zero_copy_fd (vector.gbytes);
2580 const guchar *bytes_data;
2583 bytes_data = g_bytes_get_data (vector.gbytes, &bytes_size);
2585 if (bytes_data <= vector.data.pointer && vector.data.pointer + vector.size <= bytes_data + bytes_size)
2587 if (!g_kdbus_msg_append_payload_memfd (msg, fd, vector.data.pointer - bytes_data, vector.size))
2592 if (!g_kdbus_msg_append_payload_vec (msg, vector.data.pointer, vector.size))
2598 if (!g_kdbus_msg_append_payload_vec (msg, vector.data.pointer, vector.size))
2603 if (!g_kdbus_msg_append_payload_vec (msg, body_vectors.extra_bytes->data + vector.data.offset, vector.size))
2611 msg->flags = ((g_dbus_message_get_flags (message) & G_DBUS_MESSAGE_FLAGS_NO_REPLY_EXPECTED) ? 0 : KDBUS_MSG_EXPECT_REPLY) |
2612 ((g_dbus_message_get_flags (message) & G_DBUS_MESSAGE_FLAGS_NO_AUTO_START) ? KDBUS_MSG_NO_AUTO_START : 0);
2614 if ((msg->flags) & KDBUS_MSG_EXPECT_REPLY)
2615 msg->timeout_ns = 1000LU * g_get_monotonic_time() + KDBUS_TIMEOUT_NS;
2617 msg->cookie_reply = g_dbus_message_get_reply_serial(message);
2620 if (dst_id == KDBUS_DST_ID_BROADCAST)
2622 struct kdbus_bloom_filter *bloom_filter;
2624 bloom_filter = g_kdbus_append_bloom (&item, kdbus->bloom_size);
2625 g_kdbus_setup_bloom (kdbus, message, bloom_filter);
2629 send.size = sizeof (send);
2631 send.msg_address = (gsize) msg;
2636 if (ioctl(kdbus->fd, KDBUS_CMD_SEND, &send))
2638 if (errno == ENXIO || errno == ESRCH)
2640 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_SERVICE_UNKNOWN,
2641 "Destination '%s' not known", dst_name);
2643 else if (errno == EADDRNOTAVAIL)
2645 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_SERVICE_UNKNOWN,
2646 "No support for activation for name: %s", dst_name);
2648 else if (errno == EXFULL)
2650 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_LIMITS_EXCEEDED,
2651 "The memory pool of the receiver is full");
2655 g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
2656 "%s", strerror(errno));
2664 /* We end up here if:
2665 * - too many kdbus_items
2666 * - too large kdbus_msg size
2667 * - too much vector data
2669 * We need to compact the message before sending it.
2671 g_assert_not_reached ();
2675 g_kdbus_worker_new (const gchar *address,
2678 GKDBusWorker *worker;
2680 worker = g_object_new (G_TYPE_KDBUS_WORKER, NULL);
2681 if (!_g_kdbus_open (worker, address, error))
2683 g_object_unref (worker);
2691 g_kdbus_worker_associate (GKDBusWorker *worker,
2692 GDBusCapabilityFlags capabilities,
2693 GDBusWorkerMessageReceivedCallback message_received_callback,
2694 GDBusWorkerMessageAboutToBeSentCallback message_about_to_be_sent_callback,
2695 GDBusWorkerDisconnectedCallback disconnected_callback,
2698 worker->capabilities = capabilities;
2699 worker->message_received_callback = message_received_callback;
2700 worker->message_about_to_be_sent_callback = message_about_to_be_sent_callback;
2701 worker->disconnected_callback = disconnected_callback;
2702 worker->user_data = user_data;
2706 g_kdbus_worker_unfreeze (GKDBusWorker *worker)
2710 if (worker->source != NULL)
2713 worker->context = g_main_context_ref_thread_default ();
2714 worker->source = g_unix_fd_source_new (worker->fd, G_IO_IN);
2716 g_source_set_callback (worker->source, (GSourceFunc) kdbus_ready, worker, NULL);
2717 name = g_strdup_printf ("kdbus worker");
2718 g_source_set_name (worker->source, name);
2721 g_source_attach (worker->source, worker->context);
2725 g_kdbus_worker_send_message (GKDBusWorker *worker,
2726 GDBusMessage *message,
2729 return _g_kdbus_send (worker, message, error);
2733 g_kdbus_worker_stop (GKDBusWorker *worker)
2738 g_kdbus_worker_flush_sync (GKDBusWorker *worker)
2743 g_kdbus_worker_close (GKDBusWorker *worker,
2744 GCancellable *cancellable,
2745 GSimpleAsyncResult *result)