1 /* GDBus - GLib D-Bus Library
3 * Copyright (C) 2008-2010 Red Hat, Inc.
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: David Zeuthen <davidz@redhat.com>
23 /* Uncomment to debug serializer code */
24 /* #define DEBUG_SERIALIZER */
30 #include <sys/types.h>
36 #include "gdbusutils.h"
37 #include "gdbusmessage.h"
38 #include "gdbuserror.h"
39 #include "gioenumtypes.h"
40 #include "ginputstream.h"
41 #include "gdatainputstream.h"
42 #include "gmemoryinputstream.h"
43 #include "goutputstream.h"
44 #include "gdataoutputstream.h"
45 #include "gmemoryoutputstream.h"
46 #include "gseekable.h"
48 #include "gdbusprivate.h"
51 #include "gunixfdlist.h"
57 * SECTION:gdbusmessage
58 * @short_description: D-Bus Message
61 * A type for representing D-Bus messages that can be sent or received
62 * on a #GDBusConnection.
65 typedef struct _GDBusMessageClass GDBusMessageClass;
70 * Class structure for #GDBusMessage.
74 struct _GDBusMessageClass
77 GObjectClass parent_class;
83 * The #GDBusMessage structure contains only private data and should
84 * only be accessed using the provided API.
91 GObject parent_instance;
93 GDBusMessageType type;
94 GDBusMessageFlags flags;
95 guchar major_protocol_version;
100 GUnixFDList *fd_list;
102 GDBusMessageByteOrder byte_order;
105 G_DEFINE_TYPE (GDBusMessage, g_dbus_message, G_TYPE_OBJECT);
108 g_dbus_message_finalize (GObject *object)
110 GDBusMessage *message = G_DBUS_MESSAGE (object);
112 if (message->headers != NULL)
113 g_hash_table_unref (message->headers);
114 if (message->body != NULL)
115 g_variant_unref (message->body);
117 if (message->fd_list != NULL)
118 g_object_unref (message->fd_list);
121 if (G_OBJECT_CLASS (g_dbus_message_parent_class)->finalize != NULL)
122 G_OBJECT_CLASS (g_dbus_message_parent_class)->finalize (object);
126 g_dbus_message_class_init (GDBusMessageClass *klass)
128 GObjectClass *gobject_class;
130 gobject_class = G_OBJECT_CLASS (klass);
132 gobject_class->finalize = g_dbus_message_finalize;
136 g_dbus_message_init (GDBusMessage *message)
138 /* Any D-Bus implementation is supposed to handle both Big and
139 * Little Endian encodings and the Endianness is part of the D-Bus
140 * message - we prefer to use Big Endian (since it's Network Byte
141 * Order and just easier to read for humans) but if the machine is
142 * Little Endian we use that for performance reasons.
144 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
145 message->byte_order = G_DBUS_MESSAGE_BYTE_ORDER_LITTLE_ENDIAN;
147 /* this could also be G_PDP_ENDIAN */
148 message->byte_order = G_DBUS_MESSAGE_BYTE_ORDER_BIG_ENDIAN;
150 message->headers = g_hash_table_new_full (g_direct_hash,
153 (GDestroyNotify) g_variant_unref);
157 * g_dbus_message_new:
159 * Creates a new empty #GDBusMessage.
161 * Returns: A #GDBusMessage. Free with g_object_unref().
166 g_dbus_message_new (void)
168 return g_object_new (G_TYPE_DBUS_MESSAGE, NULL);
172 * g_dbus_message_new_method_call:
173 * @name: A valid D-Bus name or %NULL.
174 * @path: A valid object path.
175 * @interface_: A valid D-Bus interface name or %NULL.
176 * @method: A valid method name.
178 * Creates a new #GDBusMessage for a method call.
180 * Returns: A #GDBusMessage. Free with g_object_unref().
185 g_dbus_message_new_method_call (const gchar *name,
187 const gchar *interface_,
190 GDBusMessage *message;
192 g_return_val_if_fail (name == NULL || g_dbus_is_name (name), NULL);
193 g_return_val_if_fail (g_variant_is_object_path (path), NULL);
194 g_return_val_if_fail (g_dbus_is_member_name (method), NULL);
195 g_return_val_if_fail (interface_ == NULL || g_dbus_is_interface_name (interface_), NULL);
197 message = g_dbus_message_new ();
198 message->type = G_DBUS_MESSAGE_TYPE_METHOD_CALL;
201 g_dbus_message_set_destination (message, name);
202 g_dbus_message_set_path (message, path);
203 g_dbus_message_set_member (message, method);
204 if (interface_ != NULL)
205 g_dbus_message_set_interface (message, interface_);
211 * g_dbus_message_new_signal:
212 * @path: A valid object path.
213 * @interface_: A valid D-Bus interface name.
214 * @signal: A valid signal name.
216 * Creates a new #GDBusMessage for a signal emission.
218 * Returns: A #GDBusMessage. Free with g_object_unref().
223 g_dbus_message_new_signal (const gchar *path,
224 const gchar *interface_,
227 GDBusMessage *message;
229 g_return_val_if_fail (g_variant_is_object_path (path), NULL);
230 g_return_val_if_fail (g_dbus_is_member_name (signal), NULL);
231 g_return_val_if_fail (g_dbus_is_interface_name (interface_), NULL);
233 message = g_dbus_message_new ();
234 message->type = G_DBUS_MESSAGE_TYPE_SIGNAL;
235 message->flags = G_DBUS_MESSAGE_FLAGS_NO_REPLY_EXPECTED;
237 g_dbus_message_set_path (message, path);
238 g_dbus_message_set_member (message, signal);
239 g_dbus_message_set_interface (message, interface_);
246 * g_dbus_message_new_method_reply:
247 * @method_call_message: A message of type %G_DBUS_MESSAGE_TYPE_METHOD_CALL to
248 * create a reply message to.
250 * Creates a new #GDBusMessage that is a reply to @method_call_message.
252 * Returns: A #GDBusMessage. Free with g_object_unref().
257 g_dbus_message_new_method_reply (GDBusMessage *method_call_message)
259 GDBusMessage *message;
262 g_return_val_if_fail (G_IS_DBUS_MESSAGE (method_call_message), NULL);
263 g_return_val_if_fail (g_dbus_message_get_message_type (method_call_message) == G_DBUS_MESSAGE_TYPE_METHOD_CALL, NULL);
264 g_return_val_if_fail (g_dbus_message_get_serial (method_call_message) != 0, NULL);
266 message = g_dbus_message_new ();
267 message->type = G_DBUS_MESSAGE_TYPE_METHOD_RETURN;
268 message->flags = G_DBUS_MESSAGE_FLAGS_NO_REPLY_EXPECTED;
269 /* reply with same endianness */
270 message->byte_order = method_call_message->byte_order;
272 g_dbus_message_set_reply_serial (message, g_dbus_message_get_serial (method_call_message));
273 sender = g_dbus_message_get_sender (method_call_message);
275 g_dbus_message_set_destination (message, sender);
281 * g_dbus_message_new_method_error:
282 * @method_call_message: A message of type %G_DBUS_MESSAGE_TYPE_METHOD_CALL to
283 * create a reply message to.
284 * @error_name: A valid D-Bus error name.
285 * @error_message_format: The D-Bus error message in a printf() format.
286 * @...: Arguments for @error_message_format.
288 * Creates a new #GDBusMessage that is an error reply to @method_call_message.
290 * Returns: A #GDBusMessage. Free with g_object_unref().
295 g_dbus_message_new_method_error (GDBusMessage *method_call_message,
296 const gchar *error_name,
297 const gchar *error_message_format,
303 va_start (var_args, error_message_format);
304 ret = g_dbus_message_new_method_error_valist (method_call_message,
306 error_message_format,
314 * g_dbus_message_new_method_error_literal:
315 * @method_call_message: A message of type %G_DBUS_MESSAGE_TYPE_METHOD_CALL to
316 * create a reply message to.
317 * @error_name: A valid D-Bus error name.
318 * @error_message: The D-Bus error message.
320 * Creates a new #GDBusMessage that is an error reply to @method_call_message.
322 * Returns: A #GDBusMessage. Free with g_object_unref().
327 g_dbus_message_new_method_error_literal (GDBusMessage *method_call_message,
328 const gchar *error_name,
329 const gchar *error_message)
331 GDBusMessage *message;
334 g_return_val_if_fail (G_IS_DBUS_MESSAGE (method_call_message), NULL);
335 g_return_val_if_fail (g_dbus_message_get_message_type (method_call_message) == G_DBUS_MESSAGE_TYPE_METHOD_CALL, NULL);
336 g_return_val_if_fail (g_dbus_message_get_serial (method_call_message) != 0, NULL);
337 g_return_val_if_fail (g_dbus_is_name (error_name), NULL);
338 g_return_val_if_fail (error_message != NULL, NULL);
340 message = g_dbus_message_new ();
341 message->type = G_DBUS_MESSAGE_TYPE_ERROR;
342 message->flags = G_DBUS_MESSAGE_FLAGS_NO_REPLY_EXPECTED;
343 /* reply with same endianness */
344 message->byte_order = method_call_message->byte_order;
346 g_dbus_message_set_reply_serial (message, g_dbus_message_get_serial (method_call_message));
347 g_dbus_message_set_error_name (message, error_name);
348 g_dbus_message_set_body (message, g_variant_new ("(s)", error_message));
350 sender = g_dbus_message_get_sender (method_call_message);
352 g_dbus_message_set_destination (message, sender);
358 * g_dbus_message_new_method_error_valist:
359 * @method_call_message: A message of type %G_DBUS_MESSAGE_TYPE_METHOD_CALL to
360 * create a reply message to.
361 * @error_name: A valid D-Bus error name.
362 * @error_message_format: The D-Bus error message in a printf() format.
363 * @var_args: Arguments for @error_message_format.
365 * Like g_dbus_message_new_method_error() but intended for language bindings.
367 * Returns: A #GDBusMessage. Free with g_object_unref().
372 g_dbus_message_new_method_error_valist (GDBusMessage *method_call_message,
373 const gchar *error_name,
374 const gchar *error_message_format,
378 gchar *error_message;
379 error_message = g_strdup_vprintf (error_message_format, var_args);
380 ret = g_dbus_message_new_method_error_literal (method_call_message,
383 g_free (error_message);
387 /* ---------------------------------------------------------------------------------------------------- */
390 * g_dbus_message_get_byte_order:
391 * @message: A #GDBusMessage.
393 * Gets the byte order of @message.
395 * Returns: The byte order.
397 GDBusMessageByteOrder
398 g_dbus_message_get_byte_order (GDBusMessage *message)
400 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), (GDBusMessageByteOrder) 0);
401 return message->byte_order;
405 * g_dbus_message_set_byte_order:
406 * @message: A #GDBusMessage.
407 * @byte_order: The byte order.
409 * Sets the byte order of @message.
412 g_dbus_message_set_byte_order (GDBusMessage *message,
413 GDBusMessageByteOrder byte_order)
415 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
416 message->byte_order = byte_order;
419 /* ---------------------------------------------------------------------------------------------------- */
421 /* TODO: need GI annotations to specify that any guchar value goes for the type */
424 * g_dbus_message_get_message_type:
425 * @message: A #GDBusMessage.
427 * Gets the type of @message.
429 * Returns: A 8-bit unsigned integer (typically a value from the #GDBusMessageType enumeration).
434 g_dbus_message_get_message_type (GDBusMessage *message)
436 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), G_DBUS_MESSAGE_TYPE_INVALID);
437 return message->type;
441 * g_dbus_message_set_message_type:
442 * @message: A #GDBusMessage.
443 * @type: A 8-bit unsigned integer (typically a value from the #GDBusMessageType enumeration).
445 * Sets @message to be of @type.
450 g_dbus_message_set_message_type (GDBusMessage *message,
451 GDBusMessageType type)
453 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
454 g_return_if_fail (type >=0 && type < 256);
455 message->type = type;
458 /* ---------------------------------------------------------------------------------------------------- */
460 /* TODO: need GI annotations to specify that any guchar value goes for flags */
463 * g_dbus_message_get_flags:
464 * @message: A #GDBusMessage.
466 * Gets the flags for @message.
468 * Returns: Flags that are set (typically values from the #GDBusMessageFlags enumeration bitwise ORed together).
473 g_dbus_message_get_flags (GDBusMessage *message)
475 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), G_DBUS_MESSAGE_FLAGS_NONE);
476 return message->flags;
480 * g_dbus_message_set_flags:
481 * @message: A #GDBusMessage.
482 * @flags: Flags for @message that are set (typically values from the #GDBusMessageFlags
483 * enumeration bitwise ORed together).
485 * Sets the flags to set on @message.
490 g_dbus_message_set_flags (GDBusMessage *message,
491 GDBusMessageFlags flags)
493 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
494 g_return_if_fail (flags >=0 && flags < 256);
495 message->flags = flags;
498 /* ---------------------------------------------------------------------------------------------------- */
501 * g_dbus_message_get_serial:
502 * @message: A #GDBusMessage.
504 * Gets the serial for @message.
506 * Returns: A #guint32.
511 g_dbus_message_get_serial (GDBusMessage *message)
513 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), 0);
514 return message->serial;
518 * g_dbus_message_set_serial:
519 * @message: A #GDBusMessage.
520 * @serial: A #guint32.
522 * Sets the serial for @message.
527 g_dbus_message_set_serial (GDBusMessage *message,
530 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
531 message->serial = serial;
534 /* ---------------------------------------------------------------------------------------------------- */
536 /* TODO: need GI annotations to specify that any guchar value goes for header_field */
539 * g_dbus_message_get_header:
540 * @message: A #GDBusMessage.
541 * @header_field: A 8-bit unsigned integer (typically a value from the #GDBusMessageHeaderField enumeration)
543 * Gets a header field on @message.
545 * Returns: A #GVariant with the value if the header was found, %NULL
546 * otherwise. Do not free, it is owned by @message.
551 g_dbus_message_get_header (GDBusMessage *message,
552 GDBusMessageHeaderField header_field)
554 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
555 g_return_val_if_fail (header_field >=0 && header_field < 256, NULL);
556 return g_hash_table_lookup (message->headers, GUINT_TO_POINTER (header_field));
560 * g_dbus_message_set_header:
561 * @message: A #GDBusMessage.
562 * @header_field: A 8-bit unsigned integer (typically a value from the #GDBusMessageHeaderField enumeration)
563 * @value: A #GVariant to set the header field or %NULL to clear the header field.
565 * Sets a header field on @message.
567 * If @value is floating, @message assumes ownership of @value.
572 g_dbus_message_set_header (GDBusMessage *message,
573 GDBusMessageHeaderField header_field,
576 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
577 g_return_if_fail (header_field >=0 && header_field < 256);
580 g_hash_table_remove (message->headers, GUINT_TO_POINTER (header_field));
584 g_hash_table_insert (message->headers, GUINT_TO_POINTER (header_field), g_variant_ref_sink (value));
589 * g_dbus_message_get_header_fields:
590 * @message: A #GDBusMessage.
592 * Gets an array of all header fields on @message that are set.
594 * Returns: An array of header fields terminated by
595 * %G_DBUS_MESSAGE_HEADER_FIELD_INVALID. Each element is a
596 * #guchar. Free with g_free().
601 g_dbus_message_get_header_fields (GDBusMessage *message)
609 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
611 keys = g_hash_table_get_keys (message->headers);
612 num_keys = g_list_length (keys);
613 ret = g_new (guchar, num_keys + 1);
614 for (l = keys, n = 0; l != NULL; l = l->next, n++)
615 ret[n] = GPOINTER_TO_UINT (l->data);
616 g_assert (n == num_keys);
617 ret[n] = G_DBUS_MESSAGE_HEADER_FIELD_INVALID;
623 /* ---------------------------------------------------------------------------------------------------- */
626 * g_dbus_message_get_body:
627 * @message: A #GDBusMessage.
629 * Gets the body of a message.
631 * Returns: A #GVariant or %NULL if the body is empty. Do not free, it is owned by @message.
636 g_dbus_message_get_body (GDBusMessage *message)
638 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
639 return message->body;
643 * g_dbus_message_set_body:
644 * @message: A #GDBusMessage.
645 * @body: Either %NULL or a #GVariant that is a tuple.
647 * Sets the body @message. As a side-effect the
648 * %G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE header field is set to the
649 * type string of @body (or cleared if @body is %NULL).
651 * If @body is floating, @message assumes ownership of @body.
656 g_dbus_message_set_body (GDBusMessage *message,
659 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
660 g_return_if_fail ((body == NULL) || g_variant_is_of_type (body, G_VARIANT_TYPE_TUPLE));
662 if (message->body != NULL)
663 g_variant_unref (message->body);
666 message->body = NULL;
667 g_dbus_message_set_signature (message, NULL);
671 const gchar *type_string;
672 gsize type_string_len;
675 message->body = g_variant_ref_sink (body);
677 type_string = g_variant_get_type_string (body);
678 type_string_len = strlen (type_string);
679 g_assert (type_string_len >= 2);
680 signature = g_strndup (type_string + 1, type_string_len - 2);
681 g_dbus_message_set_signature (message, signature);
686 /* ---------------------------------------------------------------------------------------------------- */
690 * g_dbus_message_get_unix_fd_list:
691 * @message: A #GDBusMessage.
693 * Gets the UNIX file descriptors associated with @message, if any.
695 * This method is only available on UNIX.
697 * Returns: A #GUnixFDList or %NULL if no file descriptors are
698 * associated. Do not free, this object is owned by @message.
703 g_dbus_message_get_unix_fd_list (GDBusMessage *message)
705 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
706 return message->fd_list;
710 * g_dbus_message_set_unix_fd_list:
711 * @message: A #GDBusMessage.
712 * @fd_list: (allow-none): A #GUnixFDList or %NULL.
714 * Sets the UNIX file descriptors associated with @message. As a
715 * side-effect the %G_DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS header
716 * field is set to the number of fds in @fd_list (or cleared if
717 * @fd_list is %NULL).
719 * This method is only available on UNIX.
724 g_dbus_message_set_unix_fd_list (GDBusMessage *message,
725 GUnixFDList *fd_list)
727 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
728 g_return_if_fail (fd_list == NULL || G_IS_UNIX_FD_LIST (fd_list));
729 if (message->fd_list != NULL)
730 g_object_unref (message->fd_list);
733 message->fd_list = g_object_ref (fd_list);
734 g_dbus_message_set_num_unix_fds (message, g_unix_fd_list_get_length (fd_list));
738 message->fd_list = NULL;
739 g_dbus_message_set_num_unix_fds (message, 0);
744 /* ---------------------------------------------------------------------------------------------------- */
747 validate_headers (GDBusMessage *message,
752 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), FALSE);
753 g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
757 switch (message->type)
759 case G_DBUS_MESSAGE_TYPE_INVALID:
760 g_set_error_literal (error,
762 G_IO_ERROR_INVALID_ARGUMENT,
763 _("type is INVALID"));
767 case G_DBUS_MESSAGE_TYPE_METHOD_CALL:
768 if (g_dbus_message_get_header (message, G_DBUS_MESSAGE_HEADER_FIELD_PATH) == NULL ||
769 g_dbus_message_get_header (message, G_DBUS_MESSAGE_HEADER_FIELD_MEMBER) == NULL)
771 g_set_error_literal (error,
773 G_IO_ERROR_INVALID_ARGUMENT,
774 _("METHOD_CALL message: PATH or MEMBER header field is missing"));
779 case G_DBUS_MESSAGE_TYPE_METHOD_RETURN:
780 if (g_dbus_message_get_header (message, G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL) == NULL)
782 g_set_error_literal (error,
784 G_IO_ERROR_INVALID_ARGUMENT,
785 _("METHOD_RETURN message: REPLY_SERIAL header field is missing"));
790 case G_DBUS_MESSAGE_TYPE_ERROR:
791 if (g_dbus_message_get_header (message, G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME) == NULL ||
792 g_dbus_message_get_header (message, G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL) == NULL)
794 g_set_error_literal (error,
796 G_IO_ERROR_INVALID_ARGUMENT,
797 _("ERROR message: REPLY_SERIAL or ERROR_NAME header field is missing"));
802 case G_DBUS_MESSAGE_TYPE_SIGNAL:
803 if (g_dbus_message_get_header (message, G_DBUS_MESSAGE_HEADER_FIELD_PATH) == NULL ||
804 g_dbus_message_get_header (message, G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE) == NULL ||
805 g_dbus_message_get_header (message, G_DBUS_MESSAGE_HEADER_FIELD_MEMBER) == NULL)
807 g_set_error_literal (error,
809 G_IO_ERROR_INVALID_ARGUMENT,
810 _("SIGNAL message: PATH, INTERFACE or MEMBER header field is missing"));
813 if (g_strcmp0 (g_dbus_message_get_path (message), "/org/freedesktop/DBus/Local") == 0)
815 g_set_error_literal (error,
817 G_IO_ERROR_INVALID_ARGUMENT,
818 _("SIGNAL message: The PATH header field is using the reserved value /org/freedesktop/DBus/Local"));
821 if (g_strcmp0 (g_dbus_message_get_interface (message), "org.freedesktop.DBus.Local") == 0)
823 g_set_error_literal (error,
825 G_IO_ERROR_INVALID_ARGUMENT,
826 _("SIGNAL message: The INTERFACE header field is using the reserved value org.freedesktop.DBus.Local"));
832 /* hitherto unknown type - nothing to check */
839 g_assert (ret || (error == NULL || *error != NULL));
843 /* ---------------------------------------------------------------------------------------------------- */
846 ensure_input_padding (GMemoryInputStream *mis,
853 offset = g_seekable_tell (G_SEEKABLE (mis));
854 wanted_offset = ((offset + padding_size - 1) / padding_size) * padding_size;
856 if (offset != wanted_offset)
858 return g_seekable_seek (G_SEEKABLE (mis), wanted_offset, G_SEEK_SET, NULL, error);
867 read_string (GMemoryInputStream *mis,
868 GDataInputStream *dis,
877 const gchar *end_valid;
879 s = g_string_new (NULL);
882 while (remaining > 0)
887 to_read = MIN (remaining, sizeof (buf));
888 num_read = g_input_stream_read (G_INPUT_STREAM (mis),
897 /* G_GSIZE_FORMAT doesn't work with gettext, so we use %lu */
900 G_IO_ERROR_INVALID_ARGUMENT,
901 _("Wanted to read %lu bytes but got EOF"),
906 remaining -= num_read;
907 g_string_append_len (s, buf, num_read);
911 nul = g_data_input_stream_read_byte (dis, NULL, &local_error);
912 if (local_error != NULL)
914 g_propagate_error (error, local_error);
917 if (!g_utf8_validate (s->str, -1, &end_valid))
921 offset = (gint) (end_valid - s->str);
922 valid_str = g_strndup (s->str, offset);
925 G_IO_ERROR_INVALID_ARGUMENT,
926 _("Expected valid UTF-8 string but found invalid bytes at byte offset %d (length of string is %d). "
927 "The valid UTF-8 string up until that point was `%s'"),
938 G_IO_ERROR_INVALID_ARGUMENT,
939 _("Expected NUL byte after the string `%s' but found byte %d"),
944 return g_string_free (s, FALSE);
947 g_string_free (s, TRUE);
951 /* if just_align==TRUE, don't read a value, just align the input stream wrt padding */
953 /* returns a non-floating GVariant! */
955 parse_value_from_blob (GMemoryInputStream *mis,
956 GDataInputStream *dis,
957 const GVariantType *type,
966 #ifdef DEBUG_SERIALIZER
970 s = g_variant_type_dup_string (type);
971 g_print ("%*sReading type %s from offset 0x%04x",
974 (gint) g_seekable_tell (G_SEEKABLE (mis)));
977 #endif /* DEBUG_SERIALIZER */
983 if (g_variant_type_equal (type, G_VARIANT_TYPE_BOOLEAN))
985 if (!ensure_input_padding (mis, 4, &local_error))
990 v = g_data_input_stream_read_uint32 (dis, NULL, &local_error);
991 if (local_error != NULL)
993 ret = g_variant_new_boolean (v);
996 else if (g_variant_type_equal (type, G_VARIANT_TYPE_BYTE))
1001 v = g_data_input_stream_read_byte (dis, NULL, &local_error);
1002 if (local_error != NULL)
1004 ret = g_variant_new_byte (v);
1007 else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT16))
1009 if (!ensure_input_padding (mis, 2, &local_error))
1014 v = g_data_input_stream_read_int16 (dis, NULL, &local_error);
1015 if (local_error != NULL)
1017 ret = g_variant_new_int16 (v);
1020 else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT16))
1022 if (!ensure_input_padding (mis, 2, &local_error))
1027 v = g_data_input_stream_read_uint16 (dis, NULL, &local_error);
1028 if (local_error != NULL)
1030 ret = g_variant_new_uint16 (v);
1033 else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT32))
1035 if (!ensure_input_padding (mis, 4, &local_error))
1040 v = g_data_input_stream_read_int32 (dis, NULL, &local_error);
1041 if (local_error != NULL)
1043 ret = g_variant_new_int32 (v);
1046 else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT32))
1048 if (!ensure_input_padding (mis, 4, &local_error))
1053 v = g_data_input_stream_read_uint32 (dis, NULL, &local_error);
1054 if (local_error != NULL)
1056 ret = g_variant_new_uint32 (v);
1059 else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT64))
1061 if (!ensure_input_padding (mis, 8, &local_error))
1066 v = g_data_input_stream_read_int64 (dis, NULL, &local_error);
1067 if (local_error != NULL)
1069 ret = g_variant_new_int64 (v);
1072 else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT64))
1074 if (!ensure_input_padding (mis, 8, &local_error))
1079 v = g_data_input_stream_read_uint64 (dis, NULL, &local_error);
1080 if (local_error != NULL)
1082 ret = g_variant_new_uint64 (v);
1085 else if (g_variant_type_equal (type, G_VARIANT_TYPE_DOUBLE))
1087 if (!ensure_input_padding (mis, 8, &local_error))
1093 v = g_data_input_stream_read_uint64 (dis, NULL, &local_error);
1094 if (local_error != NULL)
1096 G_STATIC_ASSERT (sizeof (gdouble) == sizeof (guint64));
1097 encoded = (gdouble *) &v;
1098 ret = g_variant_new_double (*encoded);
1101 else if (g_variant_type_equal (type, G_VARIANT_TYPE_STRING))
1103 if (!ensure_input_padding (mis, 4, &local_error))
1109 len = g_data_input_stream_read_uint32 (dis, NULL, &local_error);
1110 if (local_error != NULL)
1112 v = read_string (mis, dis, (gsize) len, &local_error);
1115 ret = g_variant_new_string (v);
1119 else if (g_variant_type_equal (type, G_VARIANT_TYPE_OBJECT_PATH))
1121 if (!ensure_input_padding (mis, 4, &local_error))
1127 len = g_data_input_stream_read_uint32 (dis, NULL, &local_error);
1128 if (local_error != NULL)
1130 v = read_string (mis, dis, (gsize) len, &local_error);
1133 if (!g_variant_is_object_path (v))
1135 g_set_error (&local_error,
1137 G_IO_ERROR_INVALID_ARGUMENT,
1138 _("Parsed value `%s' is not a valid D-Bus object path"),
1143 ret = g_variant_new_object_path (v);
1147 else if (g_variant_type_equal (type, G_VARIANT_TYPE_SIGNATURE))
1153 len = g_data_input_stream_read_byte (dis, NULL, &local_error);
1154 if (local_error != NULL)
1156 v = read_string (mis, dis, (gsize) len, &local_error);
1159 if (!g_variant_is_signature (v))
1161 g_set_error (&local_error,
1163 G_IO_ERROR_INVALID_ARGUMENT,
1164 _("Parsed value `%s' is not a valid D-Bus signature"),
1169 ret = g_variant_new_signature (v);
1173 else if (g_variant_type_equal (type, G_VARIANT_TYPE_HANDLE))
1175 if (!ensure_input_padding (mis, 4, &local_error))
1180 v = g_data_input_stream_read_int32 (dis, NULL, &local_error);
1181 if (local_error != NULL)
1183 ret = g_variant_new_handle (v);
1186 else if (g_variant_type_is_array (type))
1191 const GVariantType *element_type;
1192 GVariantBuilder builder;
1194 if (!ensure_input_padding (mis, 4, &local_error))
1203 array_len = g_data_input_stream_read_uint32 (dis, NULL, &local_error);
1204 if (local_error != NULL)
1208 #ifdef DEBUG_SERIALIZER
1209 g_print (": array spans 0x%04x bytes\n", array_len);
1210 #endif /* DEBUG_SERIALIZER */
1212 if (array_len > (2<<26))
1214 /* G_GUINT32_FORMAT doesn't work with gettext, so use u */
1215 g_set_error (&local_error,
1217 G_IO_ERROR_INVALID_ARGUMENT,
1218 _("Encountered array of length %u bytes. Maximum length is 2<<26 bytes (64 MiB)."),
1224 g_variant_builder_init (&builder, type);
1225 element_type = g_variant_type_element (type);
1230 item = parse_value_from_blob (mis,
1236 g_assert (item == NULL);
1240 /* TODO: optimize array of primitive types */
1241 offset = g_seekable_tell (G_SEEKABLE (mis));
1242 target = offset + array_len;
1243 while (offset < target)
1246 item = parse_value_from_blob (mis,
1254 g_variant_builder_clear (&builder);
1257 g_variant_builder_add_value (&builder, item);
1258 g_variant_unref (item);
1259 offset = g_seekable_tell (G_SEEKABLE (mis));
1265 ret = g_variant_builder_end (&builder);
1269 g_variant_builder_clear (&builder);
1272 else if (g_variant_type_is_dict_entry (type))
1274 const GVariantType *key_type;
1275 const GVariantType *value_type;
1279 if (!ensure_input_padding (mis, 8, &local_error))
1283 #ifdef DEBUG_SERIALIZER
1285 #endif /* DEBUG_SERIALIZER */
1289 key_type = g_variant_type_key (type);
1290 key = parse_value_from_blob (mis,
1298 value_type = g_variant_type_value (type);
1299 value = parse_value_from_blob (mis,
1307 g_variant_unref (key);
1310 ret = g_variant_new_dict_entry (key, value);
1311 g_variant_unref (key);
1312 g_variant_unref (value);
1315 else if (g_variant_type_is_tuple (type))
1317 if (!ensure_input_padding (mis, 8, &local_error))
1321 #ifdef DEBUG_SERIALIZER
1323 #endif /* DEBUG_SERIALIZER */
1327 const GVariantType *element_type;
1328 GVariantBuilder builder;
1330 g_variant_builder_init (&builder, type);
1331 element_type = g_variant_type_first (type);
1332 while (element_type != NULL)
1335 item = parse_value_from_blob (mis,
1343 g_variant_builder_clear (&builder);
1346 g_variant_builder_add_value (&builder, item);
1347 g_variant_unref (item);
1349 element_type = g_variant_type_next (element_type);
1351 ret = g_variant_builder_end (&builder);
1354 else if (g_variant_type_is_variant (type))
1357 #ifdef DEBUG_SERIALIZER
1359 #endif /* DEBUG_SERIALIZER */
1365 GVariantType *variant_type;
1368 siglen = g_data_input_stream_read_byte (dis, NULL, &local_error);
1369 if (local_error != NULL)
1371 sig = read_string (mis, dis, (gsize) siglen, &local_error);
1374 if (!g_variant_is_signature (sig))
1376 g_set_error (&local_error,
1378 G_IO_ERROR_INVALID_ARGUMENT,
1379 _("Parsed value `%s' for variant is not a valid D-Bus signature"),
1384 variant_type = g_variant_type_new (sig);
1386 value = parse_value_from_blob (mis,
1392 g_variant_type_free (variant_type);
1395 ret = g_variant_new_variant (value);
1396 g_variant_unref (value);
1402 s = g_variant_type_dup_string (type);
1403 g_set_error (&local_error,
1405 G_IO_ERROR_INVALID_ARGUMENT,
1406 _("Error deserializing GVariant with type string `%s' from the D-Bus wire format"),
1412 g_assert ((just_align && ret == NULL) || (!just_align && ret != NULL));
1414 #ifdef DEBUG_SERIALIZER
1420 if (g_variant_type_equal (type, G_VARIANT_TYPE_BYTE))
1422 s = g_strdup_printf ("0x%02x '%c'", g_variant_get_byte (ret), g_variant_get_byte (ret));
1426 s = g_variant_print (ret, FALSE);
1428 g_print (": %s\n", s);
1432 #endif /* DEBUG_SERIALIZER */
1434 /* sink the reference */
1437 g_assert (g_variant_is_floating (ret));
1438 g_variant_ref_sink (ret);
1443 #ifdef DEBUG_SERIALIZER
1445 "%*sFAILURE: %s (%s, %d)\n",
1447 local_error->message,
1448 g_quark_to_string (local_error->domain),
1450 #endif /* DEBUG_SERIALIZER */
1451 g_propagate_error (error, local_error);
1455 /* ---------------------------------------------------------------------------------------------------- */
1457 /* message_header must be at least 16 bytes */
1460 * g_dbus_message_bytes_needed:
1461 * @blob: A blob represent a binary D-Bus message.
1462 * @blob_len: The length of @blob (must be at least 16).
1463 * @error: Return location for error or %NULL.
1465 * Utility function to calculate how many bytes are needed to
1466 * completely deserialize the D-Bus message stored at @blob.
1468 * Returns: Number of bytes needed or -1 if @error is set (e.g. if
1469 * @blob contains invalid data or not enough data is available to
1470 * determine the size).
1475 g_dbus_message_bytes_needed (guchar *blob,
1483 g_return_val_if_fail (blob != NULL, -1);
1484 g_return_val_if_fail (error == NULL || *error == NULL, -1);
1485 g_return_val_if_fail (blob_len >= 16, -1);
1489 /* core header (12 bytes) + ARRAY of STRUCT of (BYTE,VARIANT) */
1490 ret = 12 + 4 + GUINT32_FROM_LE (((guint32 *) blob)[3]);
1491 /* round up so it's a multiple of 8 */
1492 ret = 8 * ((ret + 7)/8);
1493 /* finally add the body size */
1494 ret += GUINT32_FROM_LE (((guint32 *) blob)[1]);
1496 else if (blob[0] == 'B')
1498 /* core header (12 bytes) + ARRAY of STRUCT of (BYTE,VARIANT) */
1499 ret = 12 + 4 + GUINT32_FROM_BE (((guint32 *) blob)[3]);
1500 /* round up so it's a multiple of 8 */
1501 ret = 8 * ((ret + 7)/8);
1502 /* finally add the body size */
1503 ret += GUINT32_FROM_BE (((guint32 *) blob)[1]);
1509 G_IO_ERROR_INVALID_ARGUMENT,
1510 "Unable to determine message blob length - given blob is malformed");
1517 G_IO_ERROR_INVALID_ARGUMENT,
1518 "Blob indicates that message exceeds maximum message length (128MiB)");
1525 /* ---------------------------------------------------------------------------------------------------- */
1528 * g_dbus_message_new_from_blob:
1529 * @blob: A blob represent a binary D-Bus message.
1530 * @blob_len: The length of @blob.
1531 * @capabilities: A #GDBusCapabilityFlags describing what protocol features are supported.
1532 * @error: Return location for error or %NULL.
1534 * Creates a new #GDBusMessage from the data stored at @blob. The byte
1535 * order that the message was in can be retrieved using
1536 * g_dbus_message_get_byte_order().
1538 * Returns: A new #GDBusMessage or %NULL if @error is set. Free with
1544 g_dbus_message_new_from_blob (guchar *blob,
1546 GDBusCapabilityFlags capabilities,
1550 GMemoryInputStream *mis;
1551 GDataInputStream *dis;
1552 GDBusMessage *message;
1554 guchar major_protocol_version;
1555 GDataStreamByteOrder byte_order;
1556 guint32 message_body_len;
1560 GVariant *signature;
1562 /* TODO: check against @capabilities */
1566 g_return_val_if_fail (blob != NULL, NULL);
1567 g_return_val_if_fail (error == NULL || *error == NULL, NULL);
1568 g_return_val_if_fail (blob_len >= 12, NULL);
1570 message = g_dbus_message_new ();
1572 mis = G_MEMORY_INPUT_STREAM (g_memory_input_stream_new_from_data (blob, blob_len, NULL));
1573 dis = g_data_input_stream_new (G_INPUT_STREAM (mis));
1575 endianness = g_data_input_stream_read_byte (dis, NULL, NULL);
1579 byte_order = G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN;
1580 message->byte_order = G_DBUS_MESSAGE_BYTE_ORDER_LITTLE_ENDIAN;
1583 byte_order = G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN;
1584 message->byte_order = G_DBUS_MESSAGE_BYTE_ORDER_BIG_ENDIAN;
1589 G_IO_ERROR_INVALID_ARGUMENT,
1590 _("Invalid endianness value. Expected 0x6c ('l') or 0x42 ('B') but found value 0x%02x"),
1594 g_data_input_stream_set_byte_order (dis, byte_order);
1596 message->type = g_data_input_stream_read_byte (dis, NULL, NULL);
1597 message->flags = g_data_input_stream_read_byte (dis, NULL, NULL);
1598 major_protocol_version = g_data_input_stream_read_byte (dis, NULL, NULL);
1599 if (major_protocol_version != 1)
1603 G_IO_ERROR_INVALID_ARGUMENT,
1604 _("Invalid major protocol version. Expected 1 but found %d"),
1605 major_protocol_version);
1608 message_body_len = g_data_input_stream_read_uint32 (dis, NULL, NULL);
1609 message->serial = g_data_input_stream_read_uint32 (dis, NULL, NULL);
1611 #ifdef DEBUG_SERIALIZER
1612 g_print ("Parsing blob (blob_len = 0x%04x bytes)\n", (gint) blob_len);
1615 s = _g_dbus_hexdump ((const gchar *) blob, blob_len, 2);
1616 g_print ("%s\n", s);
1619 #endif /* DEBUG_SERIALIZER */
1621 #ifdef DEBUG_SERIALIZER
1622 g_print ("Parsing headers (blob_len = 0x%04x bytes)\n", (gint) blob_len);
1623 #endif /* DEBUG_SERIALIZER */
1624 headers = parse_value_from_blob (mis,
1626 G_VARIANT_TYPE ("a{yv}"),
1630 if (headers == NULL)
1632 g_variant_iter_init (&iter, headers);
1633 while ((item = g_variant_iter_next_value (&iter)) != NULL)
1635 guchar header_field;
1637 g_variant_get (item,
1641 g_dbus_message_set_header (message, header_field, value);
1642 g_variant_unref (value);
1643 g_variant_unref (item);
1645 g_variant_unref (headers);
1647 signature = g_dbus_message_get_header (message, G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE);
1648 if (signature != NULL)
1650 const gchar *signature_str;
1651 gsize signature_str_len;
1653 signature_str = g_variant_get_string (signature, &signature_str_len);
1655 /* signature but no body */
1656 if (message_body_len == 0 && signature_str_len > 0)
1660 G_IO_ERROR_INVALID_ARGUMENT,
1661 _("Signature header with signature `%s' found but message body is empty"),
1665 else if (signature_str_len > 0)
1667 GVariantType *variant_type;
1668 gchar *tupled_signature_str;
1670 if (!g_variant_is_signature (signature_str))
1674 G_IO_ERROR_INVALID_ARGUMENT,
1675 _("Parsed value `%s' is not a valid D-Bus signature (for body)"),
1679 tupled_signature_str = g_strdup_printf ("(%s)", signature_str);
1680 variant_type = g_variant_type_new (tupled_signature_str);
1681 g_free (tupled_signature_str);
1682 #ifdef DEBUG_SERIALIZER
1683 g_print ("Parsing body (blob_len = 0x%04x bytes)\n", (gint) blob_len);
1684 #endif /* DEBUG_SERIALIZER */
1685 message->body = parse_value_from_blob (mis,
1691 g_variant_type_free (variant_type);
1692 if (message->body == NULL)
1698 /* no signature, this is only OK if the body is empty */
1699 if (message_body_len != 0)
1701 /* G_GUINT32_FORMAT doesn't work with gettext, just use %u */
1704 G_IO_ERROR_INVALID_ARGUMENT,
1705 _("No signature header in message but the message body is %u bytes"),
1711 if (!validate_headers (message, error))
1713 g_prefix_error (error, _("Cannot deserialize message: "));
1720 g_object_unref (dis);
1721 g_object_unref (mis);
1729 if (message != NULL)
1730 g_object_unref (message);
1735 /* ---------------------------------------------------------------------------------------------------- */
1738 ensure_output_padding (GMemoryOutputStream *mos,
1739 GDataOutputStream *dos,
1743 gsize wanted_offset;
1744 gsize padding_needed;
1747 offset = g_memory_output_stream_get_data_size (mos);
1748 wanted_offset = ((offset + padding_size - 1) / padding_size) * padding_size;
1749 padding_needed = wanted_offset - offset;
1751 for (n = 0; n < padding_needed; n++)
1752 g_data_output_stream_put_byte (dos, '\0', NULL, NULL);
1754 return padding_needed;
1757 /* note that value can be NULL for e.g. empty arrays - type is never NULL */
1759 append_value_to_blob (GVariant *value,
1760 const GVariantType *type,
1761 GMemoryOutputStream *mos,
1762 GDataOutputStream *dos,
1763 gsize *out_padding_added,
1766 gsize padding_added;
1770 if (g_variant_type_equal (type, G_VARIANT_TYPE_BOOLEAN))
1772 padding_added = ensure_output_padding (mos, dos, 4);
1775 gboolean v = g_variant_get_boolean (value);
1776 g_data_output_stream_put_uint32 (dos, v, NULL, NULL);
1779 else if (g_variant_type_equal (type, G_VARIANT_TYPE_BYTE))
1783 guint8 v = g_variant_get_byte (value);
1784 g_data_output_stream_put_byte (dos, v, NULL, NULL);
1787 else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT16))
1789 padding_added = ensure_output_padding (mos, dos, 2);
1792 gint16 v = g_variant_get_int16 (value);
1793 g_data_output_stream_put_int16 (dos, v, NULL, NULL);
1796 else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT16))
1798 padding_added = ensure_output_padding (mos, dos, 2);
1801 guint16 v = g_variant_get_uint16 (value);
1802 g_data_output_stream_put_uint16 (dos, v, NULL, NULL);
1805 else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT32))
1807 padding_added = ensure_output_padding (mos, dos, 4);
1810 gint32 v = g_variant_get_int32 (value);
1811 g_data_output_stream_put_int32 (dos, v, NULL, NULL);
1814 else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT32))
1816 padding_added = ensure_output_padding (mos, dos, 4);
1819 guint32 v = g_variant_get_uint32 (value);
1820 g_data_output_stream_put_uint32 (dos, v, NULL, NULL);
1823 else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT64))
1825 padding_added = ensure_output_padding (mos, dos, 8);
1828 gint64 v = g_variant_get_int64 (value);
1829 g_data_output_stream_put_int64 (dos, v, NULL, NULL);
1832 else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT64))
1834 padding_added = ensure_output_padding (mos, dos, 8);
1837 guint64 v = g_variant_get_uint64 (value);
1838 g_data_output_stream_put_uint64 (dos, v, NULL, NULL);
1841 else if (g_variant_type_equal (type, G_VARIANT_TYPE_DOUBLE))
1843 padding_added = ensure_output_padding (mos, dos, 8);
1847 gdouble v = g_variant_get_double (value);
1848 G_STATIC_ASSERT (sizeof (gdouble) == sizeof (guint64));
1849 encoded = (guint64 *) &v;
1850 g_data_output_stream_put_uint64 (dos, *encoded, NULL, NULL);
1853 else if (g_variant_type_equal (type, G_VARIANT_TYPE_STRING))
1855 padding_added = ensure_output_padding (mos, dos, 4);
1861 v = g_variant_get_string (value, &len);
1862 g_assert (g_utf8_validate (v, -1, &end) && (end == v + len));
1863 g_data_output_stream_put_uint32 (dos, len, NULL, NULL);
1864 g_data_output_stream_put_string (dos, v, NULL, NULL);
1865 g_data_output_stream_put_byte (dos, '\0', NULL, NULL);
1868 else if (g_variant_type_equal (type, G_VARIANT_TYPE_OBJECT_PATH))
1870 padding_added = ensure_output_padding (mos, dos, 4);
1874 const gchar *v = g_variant_get_string (value, &len);
1875 g_assert (g_variant_is_object_path (v));
1876 g_data_output_stream_put_uint32 (dos, len, NULL, NULL);
1877 g_data_output_stream_put_string (dos, v, NULL, NULL);
1878 g_data_output_stream_put_byte (dos, '\0', NULL, NULL);
1881 else if (g_variant_type_equal (type, G_VARIANT_TYPE_SIGNATURE))
1886 const gchar *v = g_variant_get_string (value, &len);
1887 g_assert (g_variant_is_signature (v));
1888 g_data_output_stream_put_byte (dos, len, NULL, NULL);
1889 g_data_output_stream_put_string (dos, v, NULL, NULL);
1890 g_data_output_stream_put_byte (dos, '\0', NULL, NULL);
1893 else if (g_variant_type_equal (type, G_VARIANT_TYPE_HANDLE))
1895 padding_added = ensure_output_padding (mos, dos, 4);
1898 gint32 v = g_variant_get_handle (value);
1899 g_data_output_stream_put_int32 (dos, v, NULL, NULL);
1902 else if (g_variant_type_is_array (type))
1906 goffset array_len_offset;
1907 goffset array_payload_begin_offset;
1911 padding_added = ensure_output_padding (mos, dos, 4);
1914 /* array length - will be filled in later */
1915 array_len_offset = g_memory_output_stream_get_data_size (mos);
1916 g_data_output_stream_put_uint32 (dos, 0xF00DFACE, NULL, NULL);
1918 /* From the D-Bus spec:
1920 * "A UINT32 giving the length of the array data in bytes,
1921 * followed by alignment padding to the alignment boundary of
1922 * the array element type, followed by each array element. The
1923 * array length is from the end of the alignment padding to
1924 * the end of the last element, i.e. it does not include the
1925 * padding after the length, or any padding after the last
1928 * Thus, we need to count how much padding the first element
1929 * contributes and subtract that from the array length.
1931 array_payload_begin_offset = g_memory_output_stream_get_data_size (mos);
1933 if (g_variant_n_children (value) == 0)
1935 gsize padding_added_for_item;
1936 if (!append_value_to_blob (NULL,
1937 g_variant_type_element (type),
1940 &padding_added_for_item,
1943 array_payload_begin_offset += padding_added_for_item;
1949 g_variant_iter_init (&iter, value);
1950 while ((item = g_variant_iter_next_value (&iter)) != NULL)
1952 gsize padding_added_for_item;
1953 if (!append_value_to_blob (item,
1954 g_variant_get_type (item),
1957 &padding_added_for_item,
1960 g_variant_unref (item);
1963 g_variant_unref (item);
1966 array_payload_begin_offset += padding_added_for_item;
1972 cur_offset = g_memory_output_stream_get_data_size (mos);
1974 array_len = cur_offset - array_payload_begin_offset;
1976 if (!g_seekable_seek (G_SEEKABLE (mos), array_len_offset, G_SEEK_SET, NULL, error))
1979 g_data_output_stream_put_uint32 (dos, array_len, NULL, NULL);
1981 if (!g_seekable_seek (G_SEEKABLE (mos), cur_offset, G_SEEK_SET, NULL, error))
1985 else if (g_variant_type_is_dict_entry (type) || g_variant_type_is_tuple (type))
1987 padding_added = ensure_output_padding (mos, dos, 8);
1992 g_variant_iter_init (&iter, value);
1993 while ((item = g_variant_iter_next_value (&iter)) != NULL)
1995 if (!append_value_to_blob (item,
1996 g_variant_get_type (item),
2002 g_variant_unref (item);
2005 g_variant_unref (item);
2009 else if (g_variant_type_is_variant (type))
2014 const gchar *signature;
2015 child = g_variant_get_child_value (value, 0);
2016 signature = g_variant_get_type_string (child);
2017 g_data_output_stream_put_byte (dos, strlen (signature), NULL, NULL);
2018 g_data_output_stream_put_string (dos, signature, NULL, NULL);
2019 g_data_output_stream_put_byte (dos, '\0', NULL, NULL);
2020 if (!append_value_to_blob (child,
2021 g_variant_get_type (child),
2027 g_variant_unref (child);
2030 g_variant_unref (child);
2037 G_IO_ERROR_INVALID_ARGUMENT,
2038 _("Error serializing GVariant with type string `%s' to the D-Bus wire format"),
2039 g_variant_get_type_string (value));
2043 if (out_padding_added != NULL)
2044 *out_padding_added = padding_added;
2053 append_body_to_blob (GVariant *value,
2054 GMemoryOutputStream *mos,
2055 GDataOutputStream *dos,
2064 if (!g_variant_is_of_type (value, G_VARIANT_TYPE_TUPLE))
2068 G_IO_ERROR_INVALID_ARGUMENT,
2069 "Expected a tuple for the body of the GDBusMessage.");
2073 g_variant_iter_init (&iter, value);
2074 while ((item = g_variant_iter_next_value (&iter)) != NULL)
2076 if (!append_value_to_blob (item,
2077 g_variant_get_type (item),
2083 g_variant_unref (item);
2086 g_variant_unref (item);
2094 /* ---------------------------------------------------------------------------------------------------- */
2097 * g_dbus_message_to_blob:
2098 * @message: A #GDBusMessage.
2099 * @out_size: Return location for size of generated blob.
2100 * @capabilities: A #GDBusCapabilityFlags describing what protocol features are supported.
2101 * @error: Return location for error.
2103 * Serializes @message to a blob. The byte order returned by
2104 * g_dbus_message_get_byte_order() will be used.
2106 * Returns: A pointer to a valid binary D-Bus message of @out_size bytes
2107 * generated by @message or %NULL if @error is set. Free with g_free().
2112 g_dbus_message_to_blob (GDBusMessage *message,
2114 GDBusCapabilityFlags capabilities,
2117 GMemoryOutputStream *mos;
2118 GDataOutputStream *dos;
2121 GDataStreamByteOrder byte_order;
2122 goffset body_len_offset;
2123 goffset body_start_offset;
2125 GVariant *header_fields;
2126 GVariantBuilder builder;
2127 GHashTableIter hash_iter;
2129 GVariant *header_value;
2130 GVariant *signature;
2131 const gchar *signature_str;
2132 gint num_fds_in_message;
2133 gint num_fds_according_to_header;
2135 /* TODO: check against @capabilities */
2139 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
2140 g_return_val_if_fail (out_size != NULL, NULL);
2141 g_return_val_if_fail (error == NULL || *error == NULL, NULL);
2143 mos = G_MEMORY_OUTPUT_STREAM (g_memory_output_stream_new (NULL, 0, g_realloc, g_free));
2144 dos = g_data_output_stream_new (G_OUTPUT_STREAM (mos));
2146 switch (message->byte_order)
2148 case G_DBUS_MESSAGE_BYTE_ORDER_BIG_ENDIAN:
2149 byte_order = G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN;
2151 case G_DBUS_MESSAGE_BYTE_ORDER_LITTLE_ENDIAN:
2152 byte_order = G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN;
2155 g_data_output_stream_set_byte_order (dos, byte_order);
2158 g_data_output_stream_put_byte (dos, (guchar) message->byte_order, NULL, NULL);
2159 g_data_output_stream_put_byte (dos, message->type, NULL, NULL);
2160 g_data_output_stream_put_byte (dos, message->flags, NULL, NULL);
2161 g_data_output_stream_put_byte (dos, 1, NULL, NULL); /* major protocol version */
2162 body_len_offset = g_memory_output_stream_get_data_size (mos);
2163 /* body length - will be filled in later */
2164 g_data_output_stream_put_uint32 (dos, 0xF00DFACE, NULL, NULL);
2165 g_data_output_stream_put_uint32 (dos, message->serial, NULL, NULL);
2167 num_fds_in_message = 0;
2169 if (message->fd_list != NULL)
2170 num_fds_in_message = g_unix_fd_list_get_length (message->fd_list);
2172 num_fds_according_to_header = g_dbus_message_get_num_unix_fds (message);
2173 if (num_fds_in_message != num_fds_according_to_header)
2177 G_IO_ERROR_INVALID_ARGUMENT,
2178 _("Message has %d fds but the header field indicates %d fds"),
2180 num_fds_according_to_header);
2184 if (!validate_headers (message, error))
2186 g_prefix_error (error, _("Cannot serialize message: "));
2190 g_variant_builder_init (&builder, G_VARIANT_TYPE ("a{yv}"));
2191 g_hash_table_iter_init (&hash_iter, message->headers);
2192 while (g_hash_table_iter_next (&hash_iter, &key, (gpointer) &header_value))
2194 g_variant_builder_add (&builder,
2196 (guchar) GPOINTER_TO_UINT (key),
2199 header_fields = g_variant_builder_end (&builder);
2201 if (!append_value_to_blob (header_fields,
2202 g_variant_get_type (header_fields),
2207 g_variant_unref (header_fields);
2210 g_variant_unref (header_fields);
2212 /* header size must be a multiple of 8 */
2213 ensure_output_padding (mos, dos, 8);
2215 body_start_offset = g_memory_output_stream_get_data_size (mos);
2217 signature = g_dbus_message_get_header (message, G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE);
2218 signature_str = NULL;
2219 if (signature != NULL)
2220 signature_str = g_variant_get_string (signature, NULL);
2221 if (message->body != NULL)
2223 gchar *tupled_signature_str;
2224 tupled_signature_str = g_strdup_printf ("(%s)", signature_str);
2225 if (signature == NULL)
2229 G_IO_ERROR_INVALID_ARGUMENT,
2230 _("Message body has signature `%s' but there is no signature header"),
2232 g_free (tupled_signature_str);
2235 else if (g_strcmp0 (tupled_signature_str, g_variant_get_type_string (message->body)) != 0)
2239 G_IO_ERROR_INVALID_ARGUMENT,
2240 _("Message body has type signature `%s' but signature in the header field is `%s'"),
2241 tupled_signature_str, g_variant_get_type_string (message->body));
2242 g_free (tupled_signature_str);
2245 g_free (tupled_signature_str);
2246 if (!append_body_to_blob (message->body, mos, dos, error))
2251 if (signature != NULL && strlen (signature_str) > 0)
2255 G_IO_ERROR_INVALID_ARGUMENT,
2256 _("Message body is empty but signature in the header field is `(%s)'"),
2262 /* OK, we're done writing the message - set the body length */
2263 size = g_memory_output_stream_get_data_size (mos);
2264 body_size = size - body_start_offset;
2266 if (!g_seekable_seek (G_SEEKABLE (mos), body_len_offset, G_SEEK_SET, NULL, error))
2269 g_data_output_stream_put_uint32 (dos, body_size, NULL, NULL);
2271 if (!g_output_stream_close (G_OUTPUT_STREAM (dos), NULL, error))
2275 ret = g_memory_output_stream_steal_data (mos);
2278 g_object_unref (dos);
2279 g_object_unref (mos);
2284 /* ---------------------------------------------------------------------------------------------------- */
2287 get_uint32_header (GDBusMessage *message,
2288 GDBusMessageHeaderField header_field)
2294 value = g_hash_table_lookup (message->headers, GUINT_TO_POINTER (header_field));
2295 if (value != NULL && g_variant_is_of_type (value, G_VARIANT_TYPE_UINT32))
2296 ret = g_variant_get_uint32 (value);
2301 static const gchar *
2302 get_string_header (GDBusMessage *message,
2303 GDBusMessageHeaderField header_field)
2309 value = g_hash_table_lookup (message->headers, GUINT_TO_POINTER (header_field));
2310 if (value != NULL && g_variant_is_of_type (value, G_VARIANT_TYPE_STRING))
2311 ret = g_variant_get_string (value, NULL);
2316 static const gchar *
2317 get_object_path_header (GDBusMessage *message,
2318 GDBusMessageHeaderField header_field)
2324 value = g_hash_table_lookup (message->headers, GUINT_TO_POINTER (header_field));
2325 if (value != NULL && g_variant_is_of_type (value, G_VARIANT_TYPE_OBJECT_PATH))
2326 ret = g_variant_get_string (value, NULL);
2331 static const gchar *
2332 get_signature_header (GDBusMessage *message,
2333 GDBusMessageHeaderField header_field)
2339 value = g_hash_table_lookup (message->headers, GUINT_TO_POINTER (header_field));
2340 if (value != NULL && g_variant_is_of_type (value, G_VARIANT_TYPE_SIGNATURE))
2341 ret = g_variant_get_string (value, NULL);
2346 /* ---------------------------------------------------------------------------------------------------- */
2349 set_uint32_header (GDBusMessage *message,
2350 GDBusMessageHeaderField header_field,
2353 g_dbus_message_set_header (message,
2355 g_variant_new_uint32 (value));
2359 set_string_header (GDBusMessage *message,
2360 GDBusMessageHeaderField header_field,
2363 g_dbus_message_set_header (message,
2365 value == NULL ? NULL : g_variant_new_string (value));
2369 set_object_path_header (GDBusMessage *message,
2370 GDBusMessageHeaderField header_field,
2373 g_dbus_message_set_header (message,
2375 value == NULL ? NULL : g_variant_new_object_path (value));
2379 set_signature_header (GDBusMessage *message,
2380 GDBusMessageHeaderField header_field,
2383 g_dbus_message_set_header (message,
2385 value == NULL ? NULL : g_variant_new_signature (value));
2388 /* ---------------------------------------------------------------------------------------------------- */
2391 * g_dbus_message_get_reply_serial:
2392 * @message: A #GDBusMessage.
2394 * Convenience getter for the %G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL header field.
2396 * Returns: The value.
2401 g_dbus_message_get_reply_serial (GDBusMessage *message)
2403 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), 0);
2404 return get_uint32_header (message, G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL);
2408 * g_dbus_message_set_reply_serial:
2409 * @message: A #GDBusMessage.
2410 * @value: The value to set.
2412 * Convenience setter for the %G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL header field.
2417 g_dbus_message_set_reply_serial (GDBusMessage *message,
2420 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
2421 set_uint32_header (message, G_DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL, value);
2424 /* ---------------------------------------------------------------------------------------------------- */
2427 * g_dbus_message_get_interface:
2428 * @message: A #GDBusMessage.
2430 * Convenience getter for the %G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE header field.
2432 * Returns: The value.
2437 g_dbus_message_get_interface (GDBusMessage *message)
2439 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
2440 return get_string_header (message, G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE);
2444 * g_dbus_message_set_interface:
2445 * @message: A #GDBusMessage.
2446 * @value: The value to set.
2448 * Convenience setter for the %G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE header field.
2453 g_dbus_message_set_interface (GDBusMessage *message,
2456 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
2457 g_return_if_fail (value == NULL || g_dbus_is_interface_name (value));
2458 set_string_header (message, G_DBUS_MESSAGE_HEADER_FIELD_INTERFACE, value);
2461 /* ---------------------------------------------------------------------------------------------------- */
2464 * g_dbus_message_get_member:
2465 * @message: A #GDBusMessage.
2467 * Convenience getter for the %G_DBUS_MESSAGE_HEADER_FIELD_MEMBER header field.
2469 * Returns: The value.
2474 g_dbus_message_get_member (GDBusMessage *message)
2476 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
2477 return get_string_header (message, G_DBUS_MESSAGE_HEADER_FIELD_MEMBER);
2481 * g_dbus_message_set_member:
2482 * @message: A #GDBusMessage.
2483 * @value: The value to set.
2485 * Convenience setter for the %G_DBUS_MESSAGE_HEADER_FIELD_MEMBER header field.
2490 g_dbus_message_set_member (GDBusMessage *message,
2493 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
2494 g_return_if_fail (value == NULL || g_dbus_is_member_name (value));
2495 set_string_header (message, G_DBUS_MESSAGE_HEADER_FIELD_MEMBER, value);
2498 /* ---------------------------------------------------------------------------------------------------- */
2501 * g_dbus_message_get_path:
2502 * @message: A #GDBusMessage.
2504 * Convenience getter for the %G_DBUS_MESSAGE_HEADER_FIELD_PATH header field.
2506 * Returns: The value.
2511 g_dbus_message_get_path (GDBusMessage *message)
2513 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
2514 return get_object_path_header (message, G_DBUS_MESSAGE_HEADER_FIELD_PATH);
2518 * g_dbus_message_set_path:
2519 * @message: A #GDBusMessage.
2520 * @value: The value to set.
2522 * Convenience setter for the %G_DBUS_MESSAGE_HEADER_FIELD_PATH header field.
2527 g_dbus_message_set_path (GDBusMessage *message,
2530 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
2531 g_return_if_fail (value == NULL || g_variant_is_object_path (value));
2532 set_object_path_header (message, G_DBUS_MESSAGE_HEADER_FIELD_PATH, value);
2535 /* ---------------------------------------------------------------------------------------------------- */
2538 * g_dbus_message_get_sender:
2539 * @message: A #GDBusMessage.
2541 * Convenience getter for the %G_DBUS_MESSAGE_HEADER_FIELD_SENDER header field.
2543 * Returns: The value.
2548 g_dbus_message_get_sender (GDBusMessage *message)
2550 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
2551 return get_string_header (message, G_DBUS_MESSAGE_HEADER_FIELD_SENDER);
2555 * g_dbus_message_set_sender:
2556 * @message: A #GDBusMessage.
2557 * @value: The value to set.
2559 * Convenience setter for the %G_DBUS_MESSAGE_HEADER_FIELD_SENDER header field.
2564 g_dbus_message_set_sender (GDBusMessage *message,
2567 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
2568 g_return_if_fail (value == NULL || g_dbus_is_name (value));
2569 set_string_header (message, G_DBUS_MESSAGE_HEADER_FIELD_SENDER, value);
2572 /* ---------------------------------------------------------------------------------------------------- */
2575 * g_dbus_message_get_destination:
2576 * @message: A #GDBusMessage.
2578 * Convenience getter for the %G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION header field.
2580 * Returns: The value.
2585 g_dbus_message_get_destination (GDBusMessage *message)
2587 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
2588 return get_string_header (message, G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION);
2592 * g_dbus_message_set_destination:
2593 * @message: A #GDBusMessage.
2594 * @value: The value to set.
2596 * Convenience setter for the %G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION header field.
2601 g_dbus_message_set_destination (GDBusMessage *message,
2604 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
2605 g_return_if_fail (value == NULL || g_dbus_is_name (value));
2606 set_string_header (message, G_DBUS_MESSAGE_HEADER_FIELD_DESTINATION, value);
2609 /* ---------------------------------------------------------------------------------------------------- */
2612 * g_dbus_message_get_error_name:
2613 * @message: A #GDBusMessage.
2615 * Convenience getter for the %G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME header field.
2617 * Returns: The value.
2622 g_dbus_message_get_error_name (GDBusMessage *message)
2624 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
2625 return get_string_header (message, G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME);
2629 * g_dbus_message_set_error_name:
2630 * @message: A #GDBusMessage.
2631 * @value: The value to set.
2633 * Convenience setter for the %G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME header field.
2638 g_dbus_message_set_error_name (GDBusMessage *message,
2641 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
2642 g_return_if_fail (value == NULL || g_dbus_is_interface_name (value));
2643 set_string_header (message, G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME, value);
2646 /* ---------------------------------------------------------------------------------------------------- */
2649 * g_dbus_message_get_signature:
2650 * @message: A #GDBusMessage.
2652 * Convenience getter for the %G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE header field.
2654 * Returns: The value.
2659 g_dbus_message_get_signature (GDBusMessage *message)
2662 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
2663 ret = get_signature_header (message, G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE);
2670 * g_dbus_message_set_signature:
2671 * @message: A #GDBusMessage.
2672 * @value: The value to set.
2674 * Convenience setter for the %G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE header field.
2679 g_dbus_message_set_signature (GDBusMessage *message,
2682 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
2683 g_return_if_fail (value == NULL || g_variant_is_signature (value));
2684 set_signature_header (message, G_DBUS_MESSAGE_HEADER_FIELD_SIGNATURE, value);
2687 /* ---------------------------------------------------------------------------------------------------- */
2690 * g_dbus_message_get_arg0:
2691 * @message: A #GDBusMessage.
2693 * Convenience to get the first item in the body of @message.
2695 * Returns: The string item or %NULL if the first item in the body of
2696 * @message is not a string.
2701 g_dbus_message_get_arg0 (GDBusMessage *message)
2705 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
2709 if (message->body != NULL && g_variant_is_of_type (message->body, G_VARIANT_TYPE_TUPLE))
2712 item = g_variant_get_child_value (message->body, 0);
2713 if (g_variant_is_of_type (item, G_VARIANT_TYPE_STRING))
2714 ret = g_variant_get_string (item, NULL);
2715 g_variant_unref (item);
2721 /* ---------------------------------------------------------------------------------------------------- */
2724 * g_dbus_message_get_num_unix_fds:
2725 * @message: A #GDBusMessage.
2727 * Convenience getter for the %G_DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS header field.
2729 * Returns: The value.
2734 g_dbus_message_get_num_unix_fds (GDBusMessage *message)
2736 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), 0);
2737 return get_uint32_header (message, G_DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS);
2741 * g_dbus_message_set_num_unix_fds:
2742 * @message: A #GDBusMessage.
2743 * @value: The value to set.
2745 * Convenience setter for the %G_DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS header field.
2750 g_dbus_message_set_num_unix_fds (GDBusMessage *message,
2753 g_return_if_fail (G_IS_DBUS_MESSAGE (message));
2754 set_uint32_header (message, G_DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS, value);
2757 /* ---------------------------------------------------------------------------------------------------- */
2760 * g_dbus_message_to_gerror:
2761 * @message: A #GDBusMessage.
2762 * @error: The #GError to set.
2764 * If @message is not of type %G_DBUS_MESSAGE_TYPE_ERROR does
2765 * nothing and returns %FALSE.
2767 * Otherwise this method encodes the error in @message as a #GError
2768 * using g_dbus_error_set_dbus_error() using the information in the
2769 * %G_DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME header field of @message as
2770 * well as the first string item in @message's body.
2772 * Returns: %TRUE if @error was set, %FALSE otherwise.
2777 g_dbus_message_to_gerror (GDBusMessage *message,
2781 const gchar *error_name;
2783 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), FALSE);
2786 if (message->type != G_DBUS_MESSAGE_TYPE_ERROR)
2789 error_name = g_dbus_message_get_error_name (message);
2790 if (error_name != NULL)
2794 body = g_dbus_message_get_body (message);
2796 if (body != NULL && g_variant_is_of_type (body, G_VARIANT_TYPE ("(s)")))
2798 const gchar *error_message;
2799 g_variant_get (body, "(&s)", &error_message);
2800 g_dbus_error_set_dbus_error (error,
2807 /* these two situations are valid, yet pretty rare */
2810 g_dbus_error_set_dbus_error (error,
2813 _("Error return with body of type `%s'"),
2814 g_variant_get_type_string (body));
2818 g_dbus_error_set_dbus_error (error,
2821 _("Error return with empty body"));
2827 /* TOOD: this shouldn't happen - should check this at message serialization
2828 * time and disconnect the peer.
2833 "Error return without error-name header!");
2842 /* ---------------------------------------------------------------------------------------------------- */
2845 flags_to_string (GType flags_type, guint value)
2851 klass = g_type_class_ref (flags_type);
2852 s = g_string_new (NULL);
2853 for (n = 0; n < 32; n++)
2855 if ((value & (1<<n)) != 0)
2857 GFlagsValue *flags_value;
2858 flags_value = g_flags_get_first_value (klass, (1<<n));
2860 g_string_append_c (s, ',');
2861 if (flags_value != NULL)
2862 g_string_append (s, flags_value->value_nick);
2864 g_string_append_printf (s, "unknown (bit %d)", n);
2868 g_string_append (s, "none");
2869 g_type_class_unref (klass);
2870 return g_string_free (s, FALSE);
2874 _sort_keys_func (gconstpointer a,
2880 ia = GPOINTER_TO_INT (a);
2881 ib = GPOINTER_TO_INT (b);
2887 * g_dbus_message_print:
2888 * @message: A #GDBusMessage.
2889 * @indent: Indentation level.
2891 * Produces a human-readable multi-line description of @message.
2893 * The contents of the description has no ABI guarantees, the contents
2894 * and formatting is subject to change at any time. Typical output
2895 * looks something like this:
2902 * path -> objectpath '/org/gtk/GDBus/TestObject'
2903 * interface -> 'org.gtk.GDBus.TestInterface'
2904 * member -> 'GimmeStdout'
2905 * destination -> ':1.146'
2907 * UNIX File Descriptors:
2912 * Type: method-return
2913 * Flags: no-reply-expected
2917 * reply-serial -> uint32 4
2918 * destination -> ':1.159'
2919 * sender -> ':1.146'
2920 * num-unix-fds -> uint32 1
2922 * UNIX File Descriptors:
2923 * fd 12: dev=0:10,mode=020620,ino=5,uid=500,gid=5,rdev=136:2,size=0,atime=1273085037,mtime=1273085851,ctime=1272982635
2926 * Returns: A string that should be freed with g_free().
2931 g_dbus_message_print (GDBusMessage *message,
2939 g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
2941 str = g_string_new (NULL);
2943 s = _g_dbus_enum_to_string (G_TYPE_DBUS_MESSAGE_TYPE, message->type);
2944 g_string_append_printf (str, "%*sType: %s\n", indent, "", s);
2946 s = flags_to_string (G_TYPE_DBUS_MESSAGE_FLAGS, message->flags);
2947 g_string_append_printf (str, "%*sFlags: %s\n", indent, "", s);
2949 g_string_append_printf (str, "%*sVersion: %d\n", indent, "", message->major_protocol_version);
2950 g_string_append_printf (str, "%*sSerial: %d\n", indent, "", message->serial);
2952 g_string_append_printf (str, "%*sHeaders:\n", indent, "");
2953 keys = g_hash_table_get_keys (message->headers);
2954 keys = g_list_sort (keys, _sort_keys_func);
2957 for (l = keys; l != NULL; l = l->next)
2959 gint key = GPOINTER_TO_INT (l->data);
2963 value = g_hash_table_lookup (message->headers, l->data);
2964 g_assert (value != NULL);
2966 s = _g_dbus_enum_to_string (G_TYPE_DBUS_MESSAGE_HEADER_FIELD, key);
2967 value_str = g_variant_print (value, TRUE);
2968 g_string_append_printf (str, "%*s %s -> %s\n", indent, "", s, value_str);
2975 g_string_append_printf (str, "%*s (none)\n", indent, "");
2977 g_string_append_printf (str, "%*sBody: ", indent, "");
2978 if (message->body != NULL)
2980 g_variant_print_string (message->body,
2986 g_string_append (str, "()");
2988 g_string_append (str, "\n");
2990 g_string_append_printf (str, "%*sUNIX File Descriptors:\n", indent, "");
2991 if (message->fd_list != NULL)
2997 fds = g_unix_fd_list_peek_fds (message->fd_list, &num_fds);
3000 for (n = 0; n < num_fds; n++)
3003 struct stat statbuf;
3004 fs = g_string_new (NULL);
3005 if (fstat (fds[n], &statbuf) == 0)
3007 g_string_append_printf (fs, "%s" "dev=%d:%d", fs->len > 0 ? "," : "",
3008 major (statbuf.st_dev), minor (statbuf.st_dev));
3009 g_string_append_printf (fs, "%s" "mode=0%o", fs->len > 0 ? "," : "",
3011 g_string_append_printf (fs, "%s" "ino=%" G_GUINT64_FORMAT, fs->len > 0 ? "," : "",
3012 (guint64) statbuf.st_ino);
3013 g_string_append_printf (fs, "%s" "uid=%d", fs->len > 0 ? "," : "",
3015 g_string_append_printf (fs, "%s" "gid=%d", fs->len > 0 ? "," : "",
3017 g_string_append_printf (fs, "%s" "rdev=%d:%d", fs->len > 0 ? "," : "",
3018 major (statbuf.st_rdev), minor (statbuf.st_rdev));
3019 g_string_append_printf (fs, "%s" "size=%" G_GUINT64_FORMAT, fs->len > 0 ? "," : "",
3020 (guint64) statbuf.st_size);
3021 g_string_append_printf (fs, "%s" "atime=%" G_GUINT64_FORMAT, fs->len > 0 ? "," : "",
3022 (guint64) statbuf.st_atime);
3023 g_string_append_printf (fs, "%s" "mtime=%" G_GUINT64_FORMAT, fs->len > 0 ? "," : "",
3024 (guint64) statbuf.st_mtime);
3025 g_string_append_printf (fs, "%s" "ctime=%" G_GUINT64_FORMAT, fs->len > 0 ? "," : "",
3026 (guint64) statbuf.st_ctime);
3030 g_string_append_printf (fs, "(fstat failed: %s)", strerror (errno));
3032 g_string_append_printf (str, "%*s fd %d: %s\n", indent, "", fds[n], fs->str);
3033 g_string_free (fs, TRUE);
3038 g_string_append_printf (str, "%*s (empty)\n", indent, "");
3043 g_string_append_printf (str, "%*s (none)\n", indent, "");
3047 return g_string_free (str, FALSE);