1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* dbus-message.c DBusMessage object
4 * Copyright (C) 2002, 2003 Red Hat Inc.
5 * Copyright (C) 2002, 2003 CodeFactory AB
7 * Licensed under the Academic Free License version 1.2
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include "dbus-internals.h"
26 #include "dbus-marshal.h"
27 #include "dbus-message.h"
28 #include "dbus-message-internal.h"
29 #include "dbus-memory.h"
30 #include "dbus-list.h"
31 #include "dbus-message-builder.h"
35 * @defgroup DBusMessageInternals DBusMessage implementation details
36 * @ingroup DBusInternals
37 * @brief DBusMessage private implementation details.
39 * The guts of DBusMessage and its methods.
57 static dbus_bool_t field_is_named[FIELD_LAST] =
59 FALSE, /* FIELD_HEADER_LENGTH */
60 FALSE, /* FIELD_BODY_LENGTH */
61 FALSE, /* FIELD_CLIENT_SERIAL */
62 TRUE, /* FIELD_NAME */
63 TRUE, /* FIELD_SERVICE */
64 TRUE, /* FIELD_SENDER */
65 TRUE /* FIELD_REPLY_SERIAL */
70 int offset; /**< Offset to start of field (location of name of field
76 * @brief Internals of DBusMessage
78 * Object representing a message received from or to be sent to
79 * another application. This is an opaque object, all members
84 dbus_atomic_t refcount; /**< Reference count */
86 DBusString header; /**< Header network data, stored
87 * separately from body so we can
88 * independently realloc it.
91 HeaderField header_fields[FIELD_LAST]; /**< Track the location
92 * of each field in "header"
95 dbus_uint32_t client_serial; /**< Cached client serial value for speed */
96 dbus_uint32_t reply_serial; /**< Cached reply serial value for speed */
98 int header_padding; /**< bytes of alignment in header */
100 DBusString body; /**< Body network data. */
102 char byte_order; /**< Message byte order. */
104 DBusList *size_counters; /**< 0-N DBusCounter used to track message size. */
105 long size_counter_delta; /**< Size we incremented the size counters by. */
107 dbus_uint32_t changed_stamp; /**< Incremented when iterators are invalidated. */
109 unsigned int locked : 1; /**< Message being sent, no modifications allowed. */
113 DBUS_MESSAGE_ITER_TYPE_MESSAGE,
114 DBUS_MESSAGE_ITER_TYPE_ARRAY,
115 DBUS_MESSAGE_ITER_TYPE_DICT
118 /** typedef for internals of message iterator */
119 typedef struct DBusMessageRealIter DBusMessageRealIter;
122 * @brief Internals of DBusMessageIter
124 * Object representing a position in a message. All fields are internal.
126 struct DBusMessageRealIter
128 DBusMessageRealIter *parent_iter; /**< parent iter, or NULL */
129 DBusMessage *message; /**< Message used */
130 dbus_uint32_t changed_stamp; /**< stamp to detect invalid iters */
132 /* This is an int instead of an enum to get a guaranteed size for the dummy: */
133 int type; /**< type of iter */
135 int pos; /**< Current position in the string */
136 int end; /**< position right after the container */
137 int container_start; /**< offset of the start of the container */
138 int container_length_pos; /**< offset of the length of the container */
140 int wrote_dict_key; /**< whether we wrote the dict key for the current dict element */
142 int array_type_pos; /**< pointer to the position of the array element type */
143 int array_type_done; /**< TRUE if the array type is fully finished */
147 * Gets the data to be sent over the network for this message.
148 * The header and then the body should be written out.
149 * This function is guaranteed to always return the same
150 * data once a message is locked (with _dbus_message_lock()).
152 * @param message the message.
153 * @param header return location for message header data.
154 * @param body return location for message body data.
157 _dbus_message_get_network_data (DBusMessage *message,
158 const DBusString **header,
159 const DBusString **body)
161 _dbus_assert (message->locked);
163 *header = &message->header;
164 *body = &message->body;
168 clear_header_padding (DBusMessage *message)
170 _dbus_string_shorten (&message->header,
171 message->header_padding);
172 message->header_padding = 0;
176 append_header_padding (DBusMessage *message)
179 old_len = _dbus_string_get_length (&message->header);
180 if (!_dbus_string_align_length (&message->header, 8))
183 message->header_padding = _dbus_string_get_length (&message->header) - old_len;
189 adjust_field_offsets (DBusMessage *message,
199 while (i < FIELD_LAST)
201 if (message->header_fields[i].offset > offsets_after)
202 message->header_fields[i].offset += delta;
208 #ifdef DBUS_BUILD_TESTS
209 /* tests-only until it's actually used */
211 get_int_field (DBusMessage *message,
216 _dbus_assert (field < FIELD_LAST);
218 offset = message->header_fields[field].offset;
221 return -1; /* useless if -1 is a valid value of course */
223 return _dbus_demarshal_int32 (&message->header,
231 get_uint_field (DBusMessage *message,
236 _dbus_assert (field < FIELD_LAST);
238 offset = message->header_fields[field].offset;
241 return -1; /* useless if -1 is a valid value of course */
243 return _dbus_demarshal_uint32 (&message->header,
250 get_string_field (DBusMessage *message,
257 offset = message->header_fields[field].offset;
259 _dbus_assert (field < FIELD_LAST);
264 /* offset points to string length, string data follows it */
265 /* FIXME _dbus_demarshal_const_string() that returned
266 * a reference to the string plus its len might be nice.
270 *len = _dbus_demarshal_uint32 (&message->header,
275 data = _dbus_string_get_const_data (&message->header);
277 return data + (offset + 4);
280 #ifdef DBUS_BUILD_TESTS
282 append_int_field (DBusMessage *message,
289 _dbus_assert (!message->locked);
291 clear_header_padding (message);
293 orig_len = _dbus_string_get_length (&message->header);
295 if (!_dbus_string_align_length (&message->header, 4))
298 if (!_dbus_string_append_len (&message->header, name, 4))
301 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_INT32))
304 if (!_dbus_string_align_length (&message->header, 4))
307 message->header_fields[FIELD_REPLY_SERIAL].offset =
308 _dbus_string_get_length (&message->header);
310 if (!_dbus_marshal_int32 (&message->header, message->byte_order,
314 if (!append_header_padding (message))
320 message->header_fields[field].offset = -1;
321 _dbus_string_set_length (&message->header, orig_len);
323 /* this must succeed because it was allocated on function entry and
324 * DBusString doesn't ever realloc smaller
326 if (!append_header_padding (message))
327 _dbus_assert_not_reached ("failed to reappend header padding");
333 append_uint_field (DBusMessage *message,
340 _dbus_assert (!message->locked);
342 clear_header_padding (message);
344 orig_len = _dbus_string_get_length (&message->header);
346 if (!_dbus_string_align_length (&message->header, 4))
349 if (!_dbus_string_append_len (&message->header, name, 4))
352 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_UINT32))
355 if (!_dbus_string_align_length (&message->header, 4))
358 message->header_fields[FIELD_REPLY_SERIAL].offset =
359 _dbus_string_get_length (&message->header);
361 if (!_dbus_marshal_uint32 (&message->header, message->byte_order,
365 if (!append_header_padding (message))
371 message->header_fields[field].offset = -1;
372 _dbus_string_set_length (&message->header, orig_len);
374 /* this must succeed because it was allocated on function entry and
375 * DBusString doesn't ever realloc smaller
377 if (!append_header_padding (message))
378 _dbus_assert_not_reached ("failed to reappend header padding");
383 append_string_field (DBusMessage *message,
390 _dbus_assert (!message->locked);
392 clear_header_padding (message);
394 orig_len = _dbus_string_get_length (&message->header);
396 if (!_dbus_string_align_length (&message->header, 4))
399 if (!_dbus_string_append_len (&message->header, name, 4))
402 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_STRING))
405 if (!_dbus_string_align_length (&message->header, 4))
408 message->header_fields[field].offset =
409 _dbus_string_get_length (&message->header);
411 if (!_dbus_marshal_string (&message->header, message->byte_order,
415 if (!append_header_padding (message))
421 message->header_fields[field].offset = -1;
422 _dbus_string_set_length (&message->header, orig_len);
424 /* this must succeed because it was allocated on function entry and
425 * DBusString doesn't ever realloc smaller
427 if (!append_header_padding (message))
428 _dbus_assert_not_reached ("failed to reappend header padding");
433 #ifdef DBUS_BUILD_TESTS
434 /* This isn't used, but building it when tests are enabled just to
435 * keep it compiling if we need it in future
438 delete_int_or_uint_field (DBusMessage *message,
441 int offset = message->header_fields[field].offset;
443 _dbus_assert (!message->locked);
444 _dbus_assert (field_is_named[field]);
449 clear_header_padding (message);
451 /* The field typecode and name take up 8 bytes */
452 _dbus_string_delete (&message->header,
456 message->header_fields[field].offset = -1;
458 adjust_field_offsets (message,
462 append_header_padding (message);
467 delete_string_field (DBusMessage *message,
470 int offset = message->header_fields[field].offset;
474 _dbus_assert (!message->locked);
475 _dbus_assert (field_is_named[field]);
480 clear_header_padding (message);
482 get_string_field (message, field, &len);
484 /* The field typecode and name take up 8 bytes, and the nul
485 * termination is 1 bytes, string length integer is 4 bytes
487 delete_len = 8 + 4 + 1 + len;
489 _dbus_string_delete (&message->header,
493 message->header_fields[field].offset = -1;
495 adjust_field_offsets (message,
499 append_header_padding (message);
502 #ifdef DBUS_BUILD_TESTS
504 set_int_field (DBusMessage *message,
508 int offset = message->header_fields[field].offset;
510 _dbus_assert (!message->locked);
514 /* need to append the field */
519 _dbus_assert_not_reached ("appending an int field we don't support appending");
525 _dbus_marshal_set_int32 (&message->header,
535 set_uint_field (DBusMessage *message,
539 int offset = message->header_fields[field].offset;
541 _dbus_assert (!message->locked);
545 /* need to append the field */
549 case FIELD_REPLY_SERIAL:
550 return append_uint_field (message, field,
551 DBUS_HEADER_FIELD_REPLY,
554 _dbus_assert_not_reached ("appending a uint field we don't support appending");
560 _dbus_marshal_set_uint32 (&message->header,
569 set_string_field (DBusMessage *message,
573 int offset = message->header_fields[field].offset;
575 _dbus_assert (!message->locked);
576 _dbus_assert (value != NULL);
580 /* need to append the field */
585 return append_string_field (message, field,
586 DBUS_HEADER_FIELD_SENDER,
589 _dbus_assert_not_reached ("appending a string field we don't support appending");
600 clear_header_padding (message);
602 old_len = _dbus_string_get_length (&message->header);
604 len = strlen (value);
606 _dbus_string_init_const_len (&v, value,
607 len + 1); /* include nul */
608 if (!_dbus_marshal_set_string (&message->header,
614 new_len = _dbus_string_get_length (&message->header);
616 adjust_field_offsets (message,
620 if (!append_header_padding (message))
626 /* this must succeed because it was allocated on function entry and
627 * DBusString doesn't ever realloc smaller
629 if (!append_header_padding (message))
630 _dbus_assert_not_reached ("failed to reappend header padding");
637 * Sets the serial number of a message.
638 * This can only be done once on a message.
640 * @param message the message
641 * @param serial the serial
644 _dbus_message_set_serial (DBusMessage *message,
647 _dbus_assert (!message->locked);
648 _dbus_assert (dbus_message_get_serial (message) == 0);
650 set_uint_field (message, FIELD_CLIENT_SERIAL,
652 message->client_serial = serial;
656 * Sets the reply serial of a message (the client serial
657 * of the message this is a reply to).
659 * @param message the message
660 * @param reply_serial the client serial
661 * @returns #FALSE if not enough memory
664 dbus_message_set_reply_serial (DBusMessage *message,
665 dbus_uint32_t reply_serial)
667 _dbus_assert (!message->locked);
669 if (set_uint_field (message, FIELD_REPLY_SERIAL,
672 message->reply_serial = reply_serial;
680 * Returns the serial of a message or -1 if none has been specified.
681 * The message's serial number is provided by the application sending
682 * the message and is used to identify replies to this message.
684 * @param message the message
685 * @returns the client serial
688 dbus_message_get_serial (DBusMessage *message)
690 return message->client_serial;
694 * Returns the serial that the message is
695 * a reply to or 0 if none.
697 * @param message the message
698 * @returns the reply serial
701 dbus_message_get_reply_serial (DBusMessage *message)
703 return message->reply_serial;
707 * Adds a counter to be incremented immediately with the
708 * size of this message, and decremented by the size
709 * of this message when this message if finalized.
710 * The link contains a counter with its refcount already
711 * incremented, but the counter itself not incremented.
712 * Ownership of link and counter refcount is passed to
715 * @param message the message
716 * @param link link with counter as data
719 _dbus_message_add_size_counter_link (DBusMessage *message,
722 /* right now we don't recompute the delta when message
723 * size changes, and that's OK for current purposes
724 * I think, but could be important to change later.
725 * Do recompute it whenever there are no outstanding counters,
726 * since it's basically free.
728 if (message->size_counters == NULL)
730 message->size_counter_delta =
731 _dbus_string_get_length (&message->header) +
732 _dbus_string_get_length (&message->body);
735 _dbus_verbose ("message has size %ld\n",
736 message->size_counter_delta);
740 _dbus_list_append_link (&message->size_counters, link);
742 _dbus_counter_adjust (link->data, message->size_counter_delta);
746 * Adds a counter to be incremented immediately with the
747 * size of this message, and decremented by the size
748 * of this message when this message if finalized.
750 * @param message the message
751 * @param counter the counter
752 * @returns #FALSE if no memory
755 _dbus_message_add_size_counter (DBusMessage *message,
756 DBusCounter *counter)
760 link = _dbus_list_alloc_link (counter);
764 _dbus_counter_ref (counter);
765 _dbus_message_add_size_counter_link (message, link);
771 * Removes a counter tracking the size of this message, and decrements
772 * the counter by the size of this message.
774 * @param message the message
775 * @param counter the counter
778 _dbus_message_remove_size_counter (DBusMessage *message,
779 DBusCounter *counter)
781 if (!_dbus_list_remove_last (&message->size_counters,
783 _dbus_assert_not_reached ("Removed a message size counter that was not added");
785 _dbus_counter_adjust (counter, message->size_counter_delta);
787 _dbus_counter_unref (counter);
791 dbus_message_create_header (DBusMessage *message,
797 if (!_dbus_string_append_byte (&message->header, message->byte_order))
801 if (!_dbus_string_append_byte (&message->header, flags))
804 if (!_dbus_string_append_byte (&message->header, DBUS_MAJOR_PROTOCOL_VERSION))
807 if (!_dbus_string_append_byte (&message->header, 0))
810 message->header_fields[FIELD_HEADER_LENGTH].offset = 4;
811 if (!_dbus_marshal_uint32 (&message->header, message->byte_order, 0))
814 message->header_fields[FIELD_BODY_LENGTH].offset = 8;
815 if (!_dbus_marshal_uint32 (&message->header, message->byte_order, 0))
818 message->header_fields[FIELD_CLIENT_SERIAL].offset = 12;
819 if (!_dbus_marshal_int32 (&message->header, message->byte_order, -1))
822 /* Marshal message service */
825 if (!append_string_field (message,
827 DBUS_HEADER_FIELD_SERVICE,
832 _dbus_assert (name != NULL);
833 if (!append_string_field (message,
835 DBUS_HEADER_FIELD_NAME,
843 * Locks a message. Allows checking that applications don't keep a
844 * reference to a message in the outgoing queue and change it
845 * underneath us. Messages are locked when they enter the outgoing
846 * queue (dbus_connection_send_message()), and the library complains
847 * if the message is modified while locked.
849 * @param message the message to lock.
852 _dbus_message_lock (DBusMessage *message)
854 if (!message->locked)
856 /* Fill in our lengths */
857 set_uint_field (message,
859 _dbus_string_get_length (&message->header));
861 set_uint_field (message,
863 _dbus_string_get_length (&message->body));
865 message->locked = TRUE;
872 * @defgroup DBusMessage DBusMessage
874 * @brief Message to be sent or received over a DBusConnection.
876 * A DBusMessage is the most basic unit of communication over a
877 * DBusConnection. A DBusConnection represents a stream of messages
878 * received from a remote application, and a stream of messages
879 * sent to a remote application.
885 * @typedef DBusMessage
887 * Opaque data type representing a message received from or to be
888 * sent to another application.
892 dbus_message_new_empty_header (void)
894 DBusMessage *message;
897 message = dbus_new0 (DBusMessage, 1);
901 message->refcount = 1;
902 message->byte_order = DBUS_COMPILER_BYTE_ORDER;
903 message->client_serial = 0;
904 message->reply_serial = 0;
907 while (i < FIELD_LAST)
909 message->header_fields[i].offset = -1;
913 if (!_dbus_string_init (&message->header))
919 if (!_dbus_string_init (&message->body))
921 _dbus_string_free (&message->header);
931 * Constructs a new message. Returns #NULL if memory can't be
932 * allocated for the message. The service may be #NULL in which case
933 * no service is set; this is appropriate when using D-BUS in a
934 * peer-to-peer context (no message bus).
936 * @todo reverse the arguments, first 'name' then 'service'
937 * as 'name' is more fundamental
939 * @param name name of the message
940 * @param destination_service service that the message should be sent to or #NULL
941 * @returns a new DBusMessage, free with dbus_message_unref()
942 * @see dbus_message_unref()
945 dbus_message_new (const char *name,
946 const char *destination_service)
948 DBusMessage *message;
950 _dbus_return_val_if_fail (name != NULL, NULL);
952 message = dbus_message_new_empty_header ();
956 if (!dbus_message_create_header (message, name, destination_service))
958 dbus_message_unref (message);
966 * Constructs a message that is a reply to some other
967 * message. Returns #NULL if memory can't be allocated
970 * @param original_message the message which the created
971 * message is a reply to.
972 * @returns a new DBusMessage, free with dbus_message_unref()
973 * @see dbus_message_new(), dbus_message_unref()
976 dbus_message_new_reply (DBusMessage *original_message)
978 DBusMessage *message;
979 const char *sender, *name;
981 _dbus_return_val_if_fail (original_message != NULL, NULL);
983 sender = get_string_field (original_message,
985 name = get_string_field (original_message,
988 /* sender is allowed to be null here in peer-to-peer case */
990 message = dbus_message_new (name, sender);
995 if (!dbus_message_set_reply_serial (message,
996 dbus_message_get_serial (original_message)))
998 dbus_message_unref (message);
1006 * Creates a new message that is an error reply to a certain message.
1008 * @param original_message the original message
1009 * @param error_name the error name
1010 * @param error_message the error message string or #NULL for none
1011 * @returns a new error message
1014 dbus_message_new_error_reply (DBusMessage *original_message,
1015 const char *error_name,
1016 const char *error_message)
1018 DBusMessage *message;
1020 DBusMessageIter iter;
1022 _dbus_return_val_if_fail (original_message != NULL, NULL);
1023 _dbus_return_val_if_fail (error_name != NULL, NULL);
1025 sender = get_string_field (original_message,
1026 FIELD_SENDER, NULL);
1028 _dbus_assert (sender != NULL);
1030 message = dbus_message_new (error_name, sender);
1032 if (message == NULL)
1035 if (!dbus_message_set_reply_serial (message,
1036 dbus_message_get_serial (original_message)))
1038 dbus_message_unref (message);
1042 if (error_message != NULL)
1044 dbus_message_append_iter_init (message, &iter);
1045 if (!dbus_message_iter_append_string (&iter, error_message))
1047 dbus_message_unref (message);
1052 dbus_message_set_is_error (message, TRUE);
1058 * Creates a new message that is an exact replica of the message
1059 * specified, except that its refcount is set to 1.
1061 * @param message the message.
1062 * @returns the new message.
1065 dbus_message_copy (const DBusMessage *message)
1067 DBusMessage *retval;
1070 _dbus_return_val_if_fail (message != NULL, NULL);
1072 retval = dbus_new0 (DBusMessage, 1);
1076 retval->refcount = 1;
1077 retval->byte_order = message->byte_order;
1078 retval->client_serial = message->client_serial;
1079 retval->reply_serial = message->reply_serial;
1080 retval->header_padding = message->header_padding;
1081 retval->locked = FALSE;
1083 if (!_dbus_string_init (&retval->header))
1089 if (!_dbus_string_init (&retval->body))
1091 _dbus_string_free (&retval->header);
1096 if (!_dbus_string_copy (&message->header, 0,
1097 &retval->header, 0))
1099 _dbus_string_free (&retval->header);
1100 _dbus_string_free (&retval->body);
1106 if (!_dbus_string_copy (&message->body, 0,
1109 _dbus_string_free (&retval->header);
1110 _dbus_string_free (&retval->body);
1116 for (i = 0; i < FIELD_LAST; i++)
1118 retval->header_fields[i].offset = message->header_fields[i].offset;
1126 * Increments the reference count of a DBusMessage.
1128 * @param message The message
1129 * @see dbus_message_unref
1132 dbus_message_ref (DBusMessage *message)
1134 dbus_atomic_t refcount;
1136 _dbus_return_if_fail (message != NULL);
1138 refcount = _dbus_atomic_inc (&message->refcount);
1139 _dbus_assert (refcount > 1);
1143 free_size_counter (void *element,
1146 DBusCounter *counter = element;
1147 DBusMessage *message = data;
1149 _dbus_counter_adjust (counter, - message->size_counter_delta);
1151 _dbus_counter_unref (counter);
1155 * Decrements the reference count of a DBusMessage.
1157 * @param message The message
1158 * @see dbus_message_ref
1161 dbus_message_unref (DBusMessage *message)
1163 dbus_atomic_t refcount;
1165 _dbus_return_if_fail (message != NULL);
1167 refcount = _dbus_atomic_dec (&message->refcount);
1169 _dbus_assert (refcount >= 0);
1173 _dbus_list_foreach (&message->size_counters,
1174 free_size_counter, message);
1175 _dbus_list_clear (&message->size_counters);
1177 _dbus_string_free (&message->header);
1178 _dbus_string_free (&message->body);
1180 dbus_free (message);
1185 * Gets the name of a message.
1187 * @param message the message
1188 * @returns the message name (should not be freed)
1191 dbus_message_get_name (DBusMessage *message)
1193 _dbus_return_val_if_fail (message != NULL, NULL);
1195 return get_string_field (message, FIELD_NAME, NULL);
1199 * Gets the destination service of a message.
1201 * @param message the message
1202 * @returns the message destination service (should not be freed)
1205 dbus_message_get_destination (DBusMessage *message)
1207 _dbus_return_val_if_fail (message != NULL, NULL);
1209 return get_string_field (message, FIELD_SERVICE, NULL);
1213 * Appends fields to a message given a variable argument list. The
1214 * variable argument list should contain the type of the argument
1215 * followed by the value to add. Array values are specified by an int
1216 * typecode followed by a pointer to the array followed by an int
1217 * giving the length of the array. The argument list must be
1218 * terminated with DBUS_TYPE_INVALID.
1220 * This function doesn't support dicts or non-fundamental arrays.
1222 * This function supports #DBUS_TYPE_INT64 and #DBUS_TYPE_UINT64
1223 * only if #DBUS_HAVE_INT64 is defined.
1225 * @param message the message
1226 * @param first_arg_type type of the first argument
1227 * @param ... value of first argument, list of additional type-value pairs
1228 * @returns #TRUE on success
1231 dbus_message_append_args (DBusMessage *message,
1238 _dbus_return_val_if_fail (message != NULL, FALSE);
1240 va_start (var_args, first_arg_type);
1241 retval = dbus_message_append_args_valist (message,
1250 * This function takes a va_list for use by language bindings.
1251 * It's otherwise the same as dbus_message_append_args().
1253 * @todo: Shouldn't this function clean up the changes to the message
1254 * on failures? (Yes)
1256 * @see dbus_message_append_args.
1257 * @param message the message
1258 * @param first_arg_type type of first argument
1259 * @param var_args value of first argument, then list of type/value pairs
1260 * @returns #TRUE on success
1263 dbus_message_append_args_valist (DBusMessage *message,
1268 DBusMessageIter iter;
1270 _dbus_return_val_if_fail (message != NULL, FALSE);
1272 old_len = _dbus_string_get_length (&message->body);
1274 type = first_arg_type;
1276 dbus_message_append_iter_init (message, &iter);
1283 if (!dbus_message_iter_append_nil (&iter))
1286 case DBUS_TYPE_BOOLEAN:
1287 if (!dbus_message_iter_append_boolean (&iter, va_arg (var_args, dbus_bool_t)))
1290 case DBUS_TYPE_INT32:
1291 if (!dbus_message_iter_append_int32 (&iter, va_arg (var_args, dbus_int32_t)))
1294 case DBUS_TYPE_UINT32:
1295 if (!dbus_message_iter_append_uint32 (&iter, va_arg (var_args, dbus_uint32_t)))
1298 #ifdef DBUS_HAVE_INT64
1299 case DBUS_TYPE_INT64:
1300 if (!dbus_message_iter_append_int64 (&iter, va_arg (var_args, dbus_int64_t)))
1303 case DBUS_TYPE_UINT64:
1304 if (!dbus_message_iter_append_uint64 (&iter, va_arg (var_args, dbus_uint64_t)))
1307 #endif /* DBUS_HAVE_INT64 */
1308 case DBUS_TYPE_DOUBLE:
1309 if (!dbus_message_iter_append_double (&iter, va_arg (var_args, double)))
1312 case DBUS_TYPE_STRING:
1313 if (!dbus_message_iter_append_string (&iter, va_arg (var_args, const char *)))
1316 case DBUS_TYPE_NAMED:
1319 unsigned char *data;
1322 name = va_arg (var_args, const char *);
1323 data = va_arg (var_args, unsigned char *);
1324 len = va_arg (var_args, int);
1326 if (!dbus_message_iter_append_named (&iter, name, data, len))
1330 case DBUS_TYPE_ARRAY:
1335 type = va_arg (var_args, int);
1336 data = va_arg (var_args, void *);
1337 len = va_arg (var_args, int);
1341 case DBUS_TYPE_BYTE:
1342 if (!dbus_message_iter_append_byte_array (&iter, (unsigned char *)data, len))
1345 case DBUS_TYPE_BOOLEAN:
1346 if (!dbus_message_iter_append_boolean_array (&iter, (unsigned char *)data, len))
1349 case DBUS_TYPE_INT32:
1350 if (!dbus_message_iter_append_int32_array (&iter, (dbus_int32_t *)data, len))
1353 case DBUS_TYPE_UINT32:
1354 if (!dbus_message_iter_append_uint32_array (&iter, (dbus_uint32_t *)data, len))
1357 #ifdef DBUS_HAVE_INT64
1358 case DBUS_TYPE_INT64:
1359 if (!dbus_message_iter_append_int64_array (&iter, (dbus_int64_t *)data, len))
1362 case DBUS_TYPE_UINT64:
1363 if (!dbus_message_iter_append_uint64_array (&iter, (dbus_uint64_t *)data, len))
1366 #endif /* DBUS_HAVE_INT64 */
1367 case DBUS_TYPE_DOUBLE:
1368 if (!dbus_message_iter_append_double_array (&iter, (double *)data, len))
1371 case DBUS_TYPE_STRING:
1372 if (!dbus_message_iter_append_string_array (&iter, (const char **)data, len))
1376 case DBUS_TYPE_ARRAY:
1377 case DBUS_TYPE_NAMED:
1378 case DBUS_TYPE_DICT:
1379 _dbus_warn ("dbus_message_append_args_valist doesn't support recursive arrays\n");
1382 _dbus_warn ("Unknown field type %d\n", type);
1388 case DBUS_TYPE_DICT:
1389 _dbus_warn ("dbus_message_append_args_valist doesn't support dicts\n");
1392 _dbus_warn ("Unknown field type %d\n", type);
1396 type = va_arg (var_args, int);
1407 * Gets arguments from a message given a variable argument list.
1408 * The variable argument list should contain the type of the
1409 * argumen followed by a pointer to where the value should be
1410 * stored. The list is terminated with 0.
1412 * @param message the message
1413 * @param error error to be filled in on failure
1414 * @param first_arg_type the first argument type
1415 * @param ... location for first argument value, then list of type-location pairs
1416 * @returns #FALSE if the error was set
1419 dbus_message_get_args (DBusMessage *message,
1427 _dbus_return_val_if_fail (message != NULL, FALSE);
1428 _dbus_return_val_if_error_is_set (error, FALSE);
1430 va_start (var_args, first_arg_type);
1431 retval = dbus_message_get_args_valist (message, error, first_arg_type, var_args);
1438 * This function takes a va_list for use by language bindings
1440 * @todo We need to free the argument data when an error occurs.
1442 * @see dbus_message_get_args
1443 * @param message the message
1444 * @param error error to be filled in
1445 * @param first_arg_type type of the first argument
1446 * @param var_args return location for first argument, followed by list of type/location pairs
1447 * @returns #FALSE if error was set
1450 dbus_message_get_args_valist (DBusMessage *message,
1455 DBusMessageIter iter;
1457 _dbus_return_val_if_fail (message != NULL, FALSE);
1458 _dbus_return_val_if_error_is_set (error, FALSE);
1460 dbus_message_iter_init (message, &iter);
1461 return dbus_message_iter_get_args_valist (&iter, error, first_arg_type, var_args);
1465 * Gets arguments from a message iterator given a variable argument list.
1466 * The variable argument list should contain the type of the
1467 * argumen followed by a pointer to where the value should be
1468 * stored. The list is terminated with 0.
1470 * @param iter the message iterator
1471 * @param error error to be filled in on failure
1472 * @param first_arg_type the first argument type
1473 * @param ... location for first argument value, then list of type-location pairs
1474 * @returns #FALSE if the error was set
1477 dbus_message_iter_get_args (DBusMessageIter *iter,
1485 _dbus_return_val_if_fail (iter != NULL, FALSE);
1486 _dbus_return_val_if_error_is_set (error, FALSE);
1488 va_start (var_args, first_arg_type);
1489 retval = dbus_message_iter_get_args_valist (iter, error, first_arg_type, var_args);
1496 * This function takes a va_list for use by language bindings
1498 * This function supports #DBUS_TYPE_INT64 and #DBUS_TYPE_UINT64
1499 * only if #DBUS_HAVE_INT64 is defined.
1501 * @todo this function (or some lower-level non-convenience function)
1502 * needs better error handling; should allow the application to
1503 * distinguish between out of memory, and bad data from the remote
1504 * app. It also needs to not leak a bunch of args when it gets
1505 * to the arg that's bad, as that would be a security hole
1506 * (allow one app to force another to leak memory)
1508 * @todo We need to free the argument data when an error occurs.
1510 * @see dbus_message_get_args
1511 * @param iter the message iter
1512 * @param error error to be filled in
1513 * @param first_arg_type type of the first argument
1514 * @param var_args return location for first argument, followed by list of type/location pairs
1515 * @returns #FALSE if error was set
1518 dbus_message_iter_get_args_valist (DBusMessageIter *iter,
1523 int spec_type, msg_type, i;
1526 _dbus_return_val_if_fail (iter != NULL, FALSE);
1527 _dbus_return_val_if_error_is_set (error, FALSE);
1531 spec_type = first_arg_type;
1534 while (spec_type != 0)
1536 msg_type = dbus_message_iter_get_arg_type (iter);
1538 if (msg_type != spec_type)
1540 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1541 "Argument %d is specified to be of type \"%s\", but "
1542 "is actually of type \"%s\"\n", i,
1543 _dbus_type_to_string (spec_type),
1544 _dbus_type_to_string (msg_type));
1553 case DBUS_TYPE_BYTE:
1557 ptr = va_arg (var_args, unsigned char *);
1559 *ptr = dbus_message_iter_get_byte (iter);
1562 case DBUS_TYPE_BOOLEAN:
1566 ptr = va_arg (var_args, dbus_bool_t *);
1568 *ptr = dbus_message_iter_get_boolean (iter);
1571 case DBUS_TYPE_INT32:
1575 ptr = va_arg (var_args, dbus_int32_t *);
1577 *ptr = dbus_message_iter_get_int32 (iter);
1580 case DBUS_TYPE_UINT32:
1584 ptr = va_arg (var_args, dbus_uint32_t *);
1586 *ptr = dbus_message_iter_get_uint32 (iter);
1589 #ifdef DBUS_HAVE_INT64
1590 case DBUS_TYPE_INT64:
1594 ptr = va_arg (var_args, dbus_int64_t *);
1596 *ptr = dbus_message_iter_get_int64 (iter);
1599 case DBUS_TYPE_UINT64:
1603 ptr = va_arg (var_args, dbus_uint64_t *);
1605 *ptr = dbus_message_iter_get_uint64 (iter);
1608 #endif /* DBUS_HAVE_INT64 */
1610 case DBUS_TYPE_DOUBLE:
1614 ptr = va_arg (var_args, double *);
1616 *ptr = dbus_message_iter_get_double (iter);
1620 case DBUS_TYPE_STRING:
1624 ptr = va_arg (var_args, char **);
1626 *ptr = dbus_message_iter_get_string (iter);
1630 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1637 case DBUS_TYPE_NAMED:
1640 unsigned char **data;
1643 name = va_arg (var_args, char **);
1644 data = va_arg (var_args, unsigned char **);
1645 len = va_arg (var_args, int *);
1647 if (!dbus_message_iter_get_named (iter, name, data, len))
1649 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1654 case DBUS_TYPE_ARRAY:
1659 type = va_arg (var_args, int);
1660 data = va_arg (var_args, void *);
1661 len = va_arg (var_args, int *);
1663 if (dbus_message_iter_get_array_type (iter) != type)
1665 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1666 "Argument %d is specified to be of type \"array of %s\", but "
1667 "is actually of type \"array of %s\"\n", i,
1668 _dbus_type_to_string (type),
1669 _dbus_type_to_string (dbus_message_iter_get_array_type (iter)));
1675 case DBUS_TYPE_BYTE:
1676 if (!dbus_message_iter_get_byte_array (iter, (unsigned char **)data, len))
1678 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1682 case DBUS_TYPE_BOOLEAN:
1683 if (!dbus_message_iter_get_boolean_array (iter, (unsigned char **)data, len))
1685 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1689 case DBUS_TYPE_INT32:
1690 if (!dbus_message_iter_get_int32_array (iter, (dbus_int32_t **)data, len))
1692 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1696 case DBUS_TYPE_UINT32:
1697 if (!dbus_message_iter_get_uint32_array (iter, (dbus_uint32_t **)data, len))
1699 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1703 #ifdef DBUS_HAVE_INT64
1704 case DBUS_TYPE_INT64:
1705 if (!dbus_message_iter_get_int64_array (iter, (dbus_int64_t **)data, len))
1707 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1711 case DBUS_TYPE_UINT64:
1712 if (!dbus_message_iter_get_uint64_array (iter, (dbus_uint64_t **)data, len))
1714 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1718 #endif /* DBUS_HAVE_INT64 */
1719 case DBUS_TYPE_DOUBLE:
1720 if (!dbus_message_iter_get_double_array (iter, (double **)data, len))
1722 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1726 case DBUS_TYPE_STRING:
1727 if (!dbus_message_iter_get_string_array (iter, (char ***)data, len))
1729 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1734 case DBUS_TYPE_ARRAY:
1735 case DBUS_TYPE_NAMED:
1736 case DBUS_TYPE_DICT:
1737 _dbus_warn ("dbus_message_get_args_valist doesn't support recursive arrays\n");
1738 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1741 _dbus_warn ("Unknown field type %d\n", type);
1742 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1747 case DBUS_TYPE_DICT:
1748 _dbus_warn ("dbus_message_get_args_valist doesn't support dicts\n");
1749 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1752 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1753 _dbus_warn ("Unknown field type %d\n", spec_type);
1757 spec_type = va_arg (var_args, int);
1758 if (spec_type != 0 && !dbus_message_iter_next (iter))
1760 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1761 "Message has only %d arguments, but more were expected", i);
1777 * Initializes a DBusMessageIter representing the arguments of the
1778 * message passed in.
1780 * @param message the message
1781 * @param iter pointer to an iterator to initialize
1784 dbus_message_iter_init (DBusMessage *message,
1785 DBusMessageIter *iter)
1787 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1789 _dbus_return_if_fail (message != NULL);
1790 _dbus_return_if_fail (iter != NULL);
1792 _dbus_assert (sizeof (DBusMessageRealIter) <= sizeof (DBusMessageIter));
1794 real->message = message;
1795 real->parent_iter = NULL;
1796 real->changed_stamp = message->changed_stamp;
1798 real->type = DBUS_MESSAGE_ITER_TYPE_MESSAGE;
1800 real->end = _dbus_string_get_length (&message->body);
1802 real->container_start = 0;
1803 real->container_length_pos = 0;
1804 real->wrote_dict_key = 0;
1805 real->array_type_pos = 0;
1808 #ifndef DBUS_DISABLE_CHECKS
1810 dbus_message_iter_check (DBusMessageRealIter *iter)
1814 _dbus_warn ("dbus iterator check failed: iterator is NULL\n");
1818 if (iter->changed_stamp != iter->message->changed_stamp)
1820 _dbus_warn ("dbus iterator check failed: invalid iterator, must re-initialize it after modifying the message\n");
1824 if (iter->pos < 0 || iter->pos > iter->end)
1826 _dbus_warn ("dbus iterator check failed: invalid position\n");
1832 #endif /* DBUS_DISABLE_CHECKS */
1835 skip_array_type (DBusMessageRealIter *iter, int pos)
1841 data = _dbus_string_get_const_data_len (&iter->message->body,
1844 while (*data == DBUS_TYPE_ARRAY);
1850 dbus_message_iter_get_data_start (DBusMessageRealIter *iter, int *type)
1857 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
1858 data = _dbus_string_get_const_data_len (&iter->message->body,
1860 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1863 *type = DBUS_TYPE_INVALID;
1865 return skip_array_type (iter, iter->pos);
1867 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
1868 data = _dbus_string_get_const_data_len (&iter->message->body,
1869 iter->array_type_pos, 1);
1870 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1873 *type = DBUS_TYPE_INVALID;
1877 case DBUS_MESSAGE_ITER_TYPE_DICT:
1878 /* Get the length of the string */
1879 len = _dbus_demarshal_uint32 (&iter->message->body,
1880 iter->message->byte_order,
1882 pos = pos + len + 1;
1884 data = _dbus_string_get_const_data_len (&iter->message->body,
1886 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1889 *type = DBUS_TYPE_INVALID;
1891 return skip_array_type (iter, pos);
1894 _dbus_assert_not_reached ("Invalid iter type");
1897 *type = DBUS_TYPE_INVALID;
1903 * Checks if an iterator has any more fields.
1905 * @param iter the message iter
1906 * @returns #TRUE if there are more fields
1910 dbus_message_iter_has_next (DBusMessageIter *iter)
1912 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1916 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
1918 if (real->pos >= real->end)
1921 pos = dbus_message_iter_get_data_start (real, &type);
1923 if (!_dbus_marshal_get_arg_end_pos (&real->message->body,
1924 real->message->byte_order,
1925 type, pos, &end_pos))
1928 if (end_pos >= real->end)
1935 * Moves the iterator to the next field.
1937 * @param iter The message iter
1938 * @returns #TRUE if the iterator was moved to the next field
1941 dbus_message_iter_next (DBusMessageIter *iter)
1943 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1947 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
1949 pos = dbus_message_iter_get_data_start (real, &type);
1951 if (!_dbus_marshal_get_arg_end_pos (&real->message->body,
1952 real->message->byte_order,
1953 type, pos, &end_pos))
1956 if (end_pos >= real->end)
1959 real->pos = end_pos;
1965 * Returns the argument type of the argument that the
1966 * message iterator points at.
1968 * @param iter the message iter
1969 * @returns the field type
1972 dbus_message_iter_get_arg_type (DBusMessageIter *iter)
1974 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1977 _dbus_return_val_if_fail (dbus_message_iter_check (real), DBUS_TYPE_INVALID);
1979 if (real->pos >= real->end)
1980 return DBUS_TYPE_INVALID;
1982 pos = dbus_message_iter_get_data_start (real, &type);
1988 iter_get_array_type (DBusMessageRealIter *iter, int *array_type_pos)
1991 int _array_type_pos;
1996 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
1997 _array_type_pos = iter->pos + 1;
1999 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
2000 _array_type_pos = iter->array_type_pos + 1;
2002 case DBUS_MESSAGE_ITER_TYPE_DICT:
2003 /* Get the length of the string */
2004 len = _dbus_demarshal_uint32 (&iter->message->body,
2005 iter->message->byte_order,
2007 pos = pos + len + 1;
2008 data = _dbus_string_get_const_data_len (&iter->message->body,
2010 _array_type_pos = pos + 1;
2013 _dbus_assert_not_reached ("wrong iter type");
2014 return DBUS_TYPE_INVALID;
2017 if (array_type_pos != NULL)
2018 *array_type_pos = _array_type_pos;
2020 data = _dbus_string_get_const_data_len (&iter->message->body,
2021 _array_type_pos, 1);
2022 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
2025 return DBUS_TYPE_INVALID;
2030 * Returns the element type of the array that the
2031 * message iterator points at. Note that you need
2032 * to check that the iterator points to an array
2033 * prior to using this function.
2035 * @param iter the message iter
2036 * @returns the field type
2039 dbus_message_iter_get_array_type (DBusMessageIter *iter)
2041 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2044 _dbus_return_val_if_fail (dbus_message_iter_check (real), DBUS_TYPE_INVALID);
2046 if (real->pos >= real->end)
2047 return DBUS_TYPE_INVALID;
2049 pos = dbus_message_iter_get_data_start (real, &type);
2051 _dbus_assert (type == DBUS_TYPE_ARRAY);
2053 return iter_get_array_type (real, NULL);
2058 * Returns the string value that an iterator may point to.
2059 * Note that you need to check that the iterator points to
2060 * a string value before using this function.
2062 * @see dbus_message_iter_get_arg_type
2063 * @param iter the message iter
2064 * @returns the string
2067 dbus_message_iter_get_string (DBusMessageIter *iter)
2069 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2072 _dbus_return_val_if_fail (dbus_message_iter_check (real), NULL);
2074 pos = dbus_message_iter_get_data_start (real, &type);
2076 _dbus_assert (type == DBUS_TYPE_STRING);
2078 return _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2083 * Returns the name and data from a named type that an
2084 * iterator may point to. Note that you need to check that
2085 * the iterator points to a named type before using this
2088 * @see dbus_message_iter_get_arg_type
2089 * @param iter the message iter
2090 * @param name return location for the name
2091 * @param value return location for data
2092 * @param len return location for length of data
2093 * @returns TRUE if get succeed
2097 dbus_message_iter_get_named (DBusMessageIter *iter,
2099 unsigned char **value,
2102 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2106 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2108 pos = dbus_message_iter_get_data_start (real, &type);
2110 _dbus_assert (type == DBUS_TYPE_NAMED);
2112 _name = _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2118 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2119 pos + 1, NULL, value, len))
2131 * Returns the byte value that an iterator may point to.
2132 * Note that you need to check that the iterator points to
2133 * a byte value before using this function.
2135 * @see dbus_message_iter_get_arg_type
2136 * @param iter the message iter
2137 * @returns the byte value
2140 dbus_message_iter_get_byte (DBusMessageIter *iter)
2142 unsigned char value;
2143 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2146 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2148 pos = dbus_message_iter_get_data_start (real, &type);
2150 _dbus_assert (type == DBUS_TYPE_BYTE);
2152 value = _dbus_string_get_byte (&real->message->body, pos);
2159 * Returns the boolean value that an iterator may point to.
2160 * Note that you need to check that the iterator points to
2161 * a boolean value before using this function.
2163 * @see dbus_message_iter_get_arg_type
2164 * @param iter the message iter
2165 * @returns the boolean value
2168 dbus_message_iter_get_boolean (DBusMessageIter *iter)
2170 unsigned char value;
2171 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2174 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2176 pos = dbus_message_iter_get_data_start (real, &type);
2178 _dbus_assert (type == DBUS_TYPE_BOOLEAN);
2180 value = _dbus_string_get_byte (&real->message->body, pos);
2186 * Returns the 32 bit signed integer value that an iterator may point to.
2187 * Note that you need to check that the iterator points to
2188 * a 32-bit integer value before using this function.
2190 * @see dbus_message_iter_get_arg_type
2191 * @param iter the message iter
2192 * @returns the integer
2195 dbus_message_iter_get_int32 (DBusMessageIter *iter)
2197 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2200 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2202 pos = dbus_message_iter_get_data_start (real, &type);
2204 _dbus_assert (type == DBUS_TYPE_INT32);
2206 return _dbus_demarshal_int32 (&real->message->body, real->message->byte_order,
2211 * Returns the 32 bit unsigned integer value that an iterator may point to.
2212 * Note that you need to check that the iterator points to
2213 * a 32-bit unsigned integer value before using this function.
2215 * @see dbus_message_iter_get_arg_type
2216 * @param iter the message iter
2217 * @returns the integer
2220 dbus_message_iter_get_uint32 (DBusMessageIter *iter)
2222 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2225 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2227 pos = dbus_message_iter_get_data_start (real, &type);
2229 _dbus_assert (type == DBUS_TYPE_UINT32);
2231 return _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2235 #ifdef DBUS_HAVE_INT64
2238 * Returns the 64 bit signed integer value that an iterator may point
2239 * to. Note that you need to check that the iterator points to a
2240 * 64-bit integer value before using this function.
2242 * This function only exists if #DBUS_HAVE_INT64 is defined.
2244 * @see dbus_message_iter_get_arg_type
2245 * @param iter the message iter
2246 * @returns the integer
2249 dbus_message_iter_get_int64 (DBusMessageIter *iter)
2251 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2254 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2256 pos = dbus_message_iter_get_data_start (real, &type);
2258 _dbus_assert (type == DBUS_TYPE_INT64);
2260 return _dbus_demarshal_int64 (&real->message->body, real->message->byte_order,
2265 * Returns the 64 bit unsigned integer value that an iterator may point to.
2266 * Note that you need to check that the iterator points to
2267 * a 64-bit unsigned integer value before using this function.
2269 * This function only exists if #DBUS_HAVE_INT64 is defined.
2271 * @see dbus_message_iter_get_arg_type
2272 * @param iter the message iter
2273 * @returns the integer
2276 dbus_message_iter_get_uint64 (DBusMessageIter *iter)
2278 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2281 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2283 pos = dbus_message_iter_get_data_start (real, &type);
2285 _dbus_assert (type == DBUS_TYPE_UINT64);
2287 return _dbus_demarshal_uint64 (&real->message->body, real->message->byte_order,
2291 #endif /* DBUS_HAVE_INT64 */
2294 * Returns the double value that an iterator may point to.
2295 * Note that you need to check that the iterator points to
2296 * a string value before using this function.
2298 * @see dbus_message_iter_get_arg_type
2299 * @param iter the message iter
2300 * @returns the double
2303 dbus_message_iter_get_double (DBusMessageIter *iter)
2305 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2308 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0.0);
2310 pos = dbus_message_iter_get_data_start (real, &type);
2312 _dbus_assert (type == DBUS_TYPE_DOUBLE);
2314 return _dbus_demarshal_double (&real->message->body, real->message->byte_order,
2319 * Initializes an iterator for the array that the iterator
2320 * may point to. Note that you need to check that the iterator
2321 * points to an array prior to using this function.
2323 * The array element type is returned in array_type, and the array
2324 * iterator can only be used to get that type of data.
2326 * @param iter the iterator
2327 * @param array_iter pointer to an iterator to initialize
2328 * @param array_type gets set to the type of the array elements
2329 * @returns #TRUE on success
2332 dbus_message_iter_init_array_iterator (DBusMessageIter *iter,
2333 DBusMessageIter *array_iter,
2336 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2337 DBusMessageRealIter *array_real = (DBusMessageRealIter *)array_iter;
2338 int type, pos, len_pos, len, array_type_pos;
2341 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2343 pos = dbus_message_iter_get_data_start (real, &type);
2345 _dbus_assert (type == DBUS_TYPE_ARRAY);
2347 _array_type = iter_get_array_type (real, &array_type_pos);
2349 len_pos = _DBUS_ALIGN_VALUE (pos, sizeof (dbus_uint32_t));
2350 len = _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2353 array_real->parent_iter = real;
2354 array_real->message = real->message;
2355 array_real->changed_stamp = real->message->changed_stamp;
2357 array_real->type = DBUS_MESSAGE_ITER_TYPE_ARRAY;
2358 array_real->pos = pos;
2359 array_real->end = pos + len;
2361 array_real->container_start = pos;
2362 array_real->container_length_pos = len_pos;
2363 array_real->wrote_dict_key = 0;
2364 array_real->array_type_pos = array_type_pos;
2365 array_real->array_type_done = TRUE;
2367 if (array_type != NULL)
2368 *array_type = _array_type;
2375 * Initializes an iterator for the dict that the iterator
2376 * may point to. Note that you need to check that the iterator
2377 * points to a dict prior to using this function.
2379 * @param iter the iterator
2380 * @param dict_iter pointer to an iterator to initialize
2381 * @returns #TRUE on success
2384 dbus_message_iter_init_dict_iterator (DBusMessageIter *iter,
2385 DBusMessageIter *dict_iter)
2387 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2388 DBusMessageRealIter *dict_real = (DBusMessageRealIter *)dict_iter;
2389 int type, pos, len_pos, len;
2391 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2393 pos = dbus_message_iter_get_data_start (real, &type);
2395 _dbus_assert (type == DBUS_TYPE_DICT);
2397 len_pos = _DBUS_ALIGN_VALUE (pos, sizeof (dbus_uint32_t));
2398 len = _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2401 dict_real->parent_iter = real;
2402 dict_real->message = real->message;
2403 dict_real->changed_stamp = real->message->changed_stamp;
2405 dict_real->type = DBUS_MESSAGE_ITER_TYPE_DICT;
2406 dict_real->pos = pos;
2407 dict_real->end = pos + len;
2409 dict_real->container_start = pos;
2410 dict_real->container_length_pos = len_pos;
2411 dict_real->wrote_dict_key = 0;
2417 * Returns the byte array that the iterator may point to.
2418 * Note that you need to check that the iterator points
2419 * to a byte array prior to using this function.
2421 * @param iter the iterator
2422 * @param value return location for array values
2423 * @param len return location for length of byte array
2424 * @returns #TRUE on success
2427 dbus_message_iter_get_byte_array (DBusMessageIter *iter,
2428 unsigned char **value,
2431 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2434 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2436 pos = dbus_message_iter_get_data_start (real, &type);
2438 _dbus_assert (type == DBUS_TYPE_ARRAY);
2440 type = iter_get_array_type (real, NULL);
2442 _dbus_assert (type == DBUS_TYPE_BYTE);
2444 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2445 pos, NULL, value, len))
2452 * Returns the boolean array that the iterator may point to. Note that
2453 * you need to check that the iterator points to an array of the
2454 * correct type prior to using this function.
2456 * @param iter the iterator
2457 * @param value return location for the array
2458 * @param len return location for the array length
2459 * @returns #TRUE on success
2462 dbus_message_iter_get_boolean_array (DBusMessageIter *iter,
2463 unsigned char **value,
2466 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2469 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2471 pos = dbus_message_iter_get_data_start (real, &type);
2473 _dbus_assert (type == DBUS_TYPE_ARRAY);
2475 type = iter_get_array_type (real, NULL);
2477 _dbus_assert (type == DBUS_TYPE_BOOLEAN);
2479 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2480 pos, NULL, value, len))
2487 * Returns the 32 bit signed integer array that the iterator may point
2488 * to. Note that you need to check that the iterator points to an
2489 * array of the correct type prior to using this function.
2491 * @param iter the iterator
2492 * @param value return location for the array
2493 * @param len return location for the array length
2494 * @returns #TRUE on success
2497 dbus_message_iter_get_int32_array (DBusMessageIter *iter,
2498 dbus_int32_t **value,
2501 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2504 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2506 pos = dbus_message_iter_get_data_start (real, &type);
2508 _dbus_assert (type == DBUS_TYPE_ARRAY);
2510 type = iter_get_array_type (real, NULL);
2512 _dbus_assert (type == DBUS_TYPE_INT32);
2514 if (!_dbus_demarshal_int32_array (&real->message->body, real->message->byte_order,
2515 pos, NULL, value, len))
2522 * Returns the 32 bit unsigned integer array that the iterator may point
2523 * to. Note that you need to check that the iterator points to an
2524 * array of the correct type prior to using this function.
2526 * @param iter the iterator
2527 * @param value return location for the array
2528 * @param len return location for the array length
2529 * @returns #TRUE on success
2532 dbus_message_iter_get_uint32_array (DBusMessageIter *iter,
2533 dbus_uint32_t **value,
2536 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2539 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2541 pos = dbus_message_iter_get_data_start (real, &type);
2543 _dbus_assert (type == DBUS_TYPE_ARRAY);
2545 type = iter_get_array_type (real, NULL);
2546 _dbus_assert (type == DBUS_TYPE_UINT32);
2548 if (!_dbus_demarshal_uint32_array (&real->message->body, real->message->byte_order,
2549 pos, NULL, value, len))
2555 #ifdef DBUS_HAVE_INT64
2558 * Returns the 64 bit signed integer array that the iterator may point
2559 * to. Note that you need to check that the iterator points to an
2560 * array of the correct type prior to using this function.
2562 * This function only exists if #DBUS_HAVE_INT64 is defined.
2564 * @param iter the iterator
2565 * @param value return location for the array
2566 * @param len return location for the array length
2567 * @returns #TRUE on success
2570 dbus_message_iter_get_int64_array (DBusMessageIter *iter,
2571 dbus_int64_t **value,
2574 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2577 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2579 pos = dbus_message_iter_get_data_start (real, &type);
2581 _dbus_assert (type == DBUS_TYPE_ARRAY);
2583 type = iter_get_array_type (real, NULL);
2585 _dbus_assert (type == DBUS_TYPE_INT64);
2587 if (!_dbus_demarshal_int64_array (&real->message->body, real->message->byte_order,
2588 pos, NULL, value, len))
2595 * Returns the 64 bit unsigned integer array that the iterator may point
2596 * to. Note that you need to check that the iterator points to an
2597 * array of the correct type prior to using this function.
2599 * This function only exists if #DBUS_HAVE_INT64 is defined.
2601 * @param iter the iterator
2602 * @param value return location for the array
2603 * @param len return location for the array length
2604 * @returns #TRUE on success
2607 dbus_message_iter_get_uint64_array (DBusMessageIter *iter,
2608 dbus_uint64_t **value,
2611 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2614 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2616 pos = dbus_message_iter_get_data_start (real, &type);
2618 _dbus_assert (type == DBUS_TYPE_ARRAY);
2620 type = iter_get_array_type (real, NULL);
2621 _dbus_assert (type == DBUS_TYPE_UINT64);
2623 if (!_dbus_demarshal_uint64_array (&real->message->body, real->message->byte_order,
2624 pos, NULL, value, len))
2630 #endif /* DBUS_HAVE_INT64 */
2633 * Returns the double array that the iterator may point to. Note that
2634 * you need to check that the iterator points to an array of the
2635 * correct type prior to using this function.
2637 * @param iter the iterator
2638 * @param value return location for the array
2639 * @param len return location for the array length
2640 * @returns #TRUE on success
2643 dbus_message_iter_get_double_array (DBusMessageIter *iter,
2647 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2650 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2652 pos = dbus_message_iter_get_data_start (real, &type);
2654 _dbus_assert (type == DBUS_TYPE_ARRAY);
2656 type = iter_get_array_type (real, NULL);
2657 _dbus_assert (type == DBUS_TYPE_DOUBLE);
2659 if (!_dbus_demarshal_double_array (&real->message->body, real->message->byte_order,
2660 pos, NULL, value, len))
2667 * Returns the string array that the iterator may point to.
2668 * Note that you need to check that the iterator points
2669 * to a byte array prior to using this function.
2671 * The returned value is a #NULL-terminated array of strings.
2672 * Each string is a separate malloc block, and the array
2673 * itself is a malloc block. You can free this type of
2674 * string array with dbus_free_string_array().
2676 * @param iter the iterator
2677 * @param value return location for string values
2678 * @param len return location for length of byte array
2679 * @returns #TRUE on success
2682 dbus_message_iter_get_string_array (DBusMessageIter *iter,
2686 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2689 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2691 pos = dbus_message_iter_get_data_start (real, &type);
2693 _dbus_assert (type == DBUS_TYPE_ARRAY);
2695 type = iter_get_array_type (real, NULL);
2696 _dbus_assert (type == DBUS_TYPE_STRING);
2698 if (!_dbus_demarshal_string_array (&real->message->body, real->message->byte_order,
2699 pos, NULL, value, len))
2706 * Returns the key name fot the dict entry that an iterator
2707 * may point to. Note that you need to check that the iterator
2708 * points to a dict entry before using this function.
2710 * @see dbus_message_iter_init_dict_iterator
2711 * @param iter the message iter
2712 * @returns the key name
2715 dbus_message_iter_get_dict_key (DBusMessageIter *iter)
2717 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2719 _dbus_return_val_if_fail (dbus_message_iter_check (real), NULL);
2721 _dbus_assert (real->type == DBUS_MESSAGE_ITER_TYPE_DICT);
2723 return _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2728 * Initializes a DBusMessageIter pointing to the end of the
2729 * message. This iterator can be used to append data to the
2732 * @param message the message
2733 * @param iter pointer to an iterator to initialize
2736 dbus_message_append_iter_init (DBusMessage *message,
2737 DBusMessageIter *iter)
2739 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2741 _dbus_return_if_fail (message != NULL);
2742 _dbus_return_if_fail (iter != NULL);
2744 real->message = message;
2745 real->parent_iter = NULL;
2746 real->changed_stamp = message->changed_stamp;
2748 real->type = DBUS_MESSAGE_ITER_TYPE_MESSAGE;
2749 real->end = _dbus_string_get_length (&real->message->body);
2750 real->pos = real->end;
2752 real->container_length_pos = 0;
2753 real->wrote_dict_key = 0;
2756 #ifndef DBUS_DISABLE_CHECKS
2758 dbus_message_iter_append_check (DBusMessageRealIter *iter)
2762 _dbus_warn ("dbus iterator check failed: NULL iterator\n");
2766 if (iter->message->locked)
2768 _dbus_warn ("dbus iterator check failed: message is locked (has already been sent)\n");
2772 if (iter->changed_stamp != iter->message->changed_stamp)
2774 _dbus_warn ("dbus iterator check failed: invalid iterator, must re-initialize it after modifying the message");
2778 if (iter->pos != iter->end)
2780 _dbus_warn ("dbus iterator check failed: can only append at end of message");
2784 if (iter->pos != _dbus_string_get_length (&iter->message->body))
2786 _dbus_warn ("dbus iterator check failed: append pos not at end of message string");
2792 #endif /* DBUS_DISABLE_CHECKS */
2795 dbus_message_iter_append_type (DBusMessageRealIter *iter,
2801 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
2802 if (!_dbus_string_append_byte (&iter->message->body, type))
2806 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
2807 data = _dbus_string_get_const_data_len (&iter->message->body,
2808 iter->array_type_pos, 1);
2811 _dbus_warn ("Appended element of wrong type for array\n");
2816 case DBUS_MESSAGE_ITER_TYPE_DICT:
2817 if (!iter->wrote_dict_key)
2819 _dbus_warn ("Appending dict data before key name\n");
2823 if (!_dbus_string_append_byte (&iter->message->body, type))
2829 _dbus_assert_not_reached ("Invalid iter type");
2837 dbus_message_iter_update_after_change (DBusMessageRealIter *iter)
2839 iter->changed_stamp = iter->message->changed_stamp;
2841 /* Set new end of iter */
2842 iter->end = _dbus_string_get_length (&iter->message->body);
2843 iter->pos = iter->end;
2845 /* Set container length */
2846 if (iter->type == DBUS_MESSAGE_ITER_TYPE_DICT ||
2847 (iter->type == DBUS_MESSAGE_ITER_TYPE_ARRAY && iter->array_type_done))
2848 _dbus_marshal_set_uint32 (&iter->message->body,
2849 iter->message->byte_order,
2850 iter->container_length_pos,
2851 iter->end - iter->container_start);
2853 if (iter->parent_iter)
2854 dbus_message_iter_update_after_change (iter->parent_iter);
2858 dbus_message_iter_append_done (DBusMessageRealIter *iter)
2860 iter->message->changed_stamp++;
2861 dbus_message_iter_update_after_change (iter);
2862 iter->wrote_dict_key = FALSE;
2866 * Appends a nil value to the message
2868 * @param iter an iterator pointing to the end of the message
2869 * @returns #TRUE on success
2872 dbus_message_iter_append_nil (DBusMessageIter *iter)
2874 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2876 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
2878 if (!dbus_message_iter_append_type (real, DBUS_TYPE_NIL))
2881 dbus_message_iter_append_done (real);
2887 * Appends a boolean value to the message
2889 * @param iter an iterator pointing to the end of the message
2890 * @param value the boolean value
2891 * @returns #TRUE on success
2894 dbus_message_iter_append_boolean (DBusMessageIter *iter,
2897 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2899 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
2901 if (!dbus_message_iter_append_type (real, DBUS_TYPE_BOOLEAN))
2904 if (!_dbus_string_append_byte (&real->message->body, (value != FALSE)))
2906 _dbus_string_set_length (&real->message->body, real->pos);
2910 dbus_message_iter_append_done (real);
2916 * Appends a byte to the message
2918 * @param iter an iterator pointing to the end of the message
2919 * @param value the byte value
2920 * @returns #TRUE on success
2923 dbus_message_iter_append_byte (DBusMessageIter *iter,
2924 unsigned char value)
2926 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2928 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
2930 if (!dbus_message_iter_append_type (real, DBUS_TYPE_BYTE))
2933 if (!_dbus_string_append_byte (&real->message->body, value))
2935 _dbus_string_set_length (&real->message->body, real->pos);
2939 dbus_message_iter_append_done (real);
2946 * Appends a 32 bit signed integer to the message.
2948 * @param iter an iterator pointing to the end of the message
2949 * @param value the integer value
2950 * @returns #TRUE on success
2953 dbus_message_iter_append_int32 (DBusMessageIter *iter,
2956 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2958 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
2960 if (!dbus_message_iter_append_type (real, DBUS_TYPE_INT32))
2963 if (!_dbus_marshal_int32 (&real->message->body, real->message->byte_order, value))
2965 _dbus_string_set_length (&real->message->body, real->pos);
2969 dbus_message_iter_append_done (real);
2975 * Appends a 32 bit unsigned integer to the message.
2977 * @param iter an iterator pointing to the end of the message
2978 * @param value the integer value
2979 * @returns #TRUE on success
2982 dbus_message_iter_append_uint32 (DBusMessageIter *iter,
2983 dbus_uint32_t value)
2985 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2987 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
2989 if (!dbus_message_iter_append_type (real, DBUS_TYPE_UINT32))
2992 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, value))
2994 _dbus_string_set_length (&real->message->body, real->pos);
2998 dbus_message_iter_append_done (real);
3003 #ifdef DBUS_HAVE_INT64
3006 * Appends a 64 bit signed integer to the message.
3008 * This function only exists if #DBUS_HAVE_INT64 is defined.
3010 * @param iter an iterator pointing to the end of the message
3011 * @param value the integer value
3012 * @returns #TRUE on success
3015 dbus_message_iter_append_int64 (DBusMessageIter *iter,
3018 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3020 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3022 if (!dbus_message_iter_append_type (real, DBUS_TYPE_INT64))
3025 if (!_dbus_marshal_int64 (&real->message->body, real->message->byte_order, value))
3027 _dbus_string_set_length (&real->message->body, real->pos);
3031 dbus_message_iter_append_done (real);
3037 * Appends a 64 bit unsigned integer to the message.
3039 * This function only exists if #DBUS_HAVE_INT64 is defined.
3041 * @param iter an iterator pointing to the end of the message
3042 * @param value the integer value
3043 * @returns #TRUE on success
3046 dbus_message_iter_append_uint64 (DBusMessageIter *iter,
3047 dbus_uint64_t value)
3049 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3051 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3053 if (!dbus_message_iter_append_type (real, DBUS_TYPE_UINT64))
3056 if (!_dbus_marshal_uint64 (&real->message->body, real->message->byte_order, value))
3058 _dbus_string_set_length (&real->message->body, real->pos);
3062 dbus_message_iter_append_done (real);
3067 #endif /* DBUS_HAVE_INT64 */
3070 * Appends a double value to the message.
3072 * @param iter an iterator pointing to the end of the message
3073 * @param value the double value
3074 * @returns #TRUE on success
3077 dbus_message_iter_append_double (DBusMessageIter *iter,
3080 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3082 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3084 if (!dbus_message_iter_append_type (real, DBUS_TYPE_DOUBLE))
3087 if (!_dbus_marshal_double (&real->message->body, real->message->byte_order, value))
3089 _dbus_string_set_length (&real->message->body, real->pos);
3093 dbus_message_iter_append_done (real);
3099 * Appends a UTF-8 string to the message.
3101 * @param iter an iterator pointing to the end of the message
3102 * @param value the string
3103 * @returns #TRUE on success
3106 dbus_message_iter_append_string (DBusMessageIter *iter,
3109 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3111 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3113 if (!dbus_message_iter_append_type (real, DBUS_TYPE_STRING))
3116 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, value))
3118 _dbus_string_set_length (&real->message->body, real->pos);
3122 dbus_message_iter_append_done (real);
3128 * Appends a named type data chunk to the message. A named
3129 * type is simply an arbitrary UTF-8 string used as a type
3130 * tag, plus an array of arbitrary bytes to be interpreted
3131 * according to the type tag.
3133 * @param iter an iterator pointing to the end of the message
3134 * @param name the name of the type
3135 * @param data the binary data used to store the value
3136 * @param len the length of the binary data in bytes
3137 * @returns #TRUE on success
3140 dbus_message_iter_append_named (DBusMessageIter *iter,
3142 const unsigned char *data,
3145 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3147 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3149 if (!dbus_message_iter_append_type (real, DBUS_TYPE_NAMED))
3152 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, name))
3154 _dbus_string_set_length (&real->message->body, real->pos);
3158 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, data, len))
3160 _dbus_string_set_length (&real->message->body, real->pos);
3164 dbus_message_iter_append_done (real);
3171 * Appends a dict key name to the message. The iterator used
3172 * must point to a dict.
3174 * @param iter an iterator pointing to the end of the message
3175 * @param value the string
3176 * @returns #TRUE on success
3179 dbus_message_iter_append_dict_key (DBusMessageIter *iter,
3182 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3184 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3185 _dbus_assert (real->type == DBUS_MESSAGE_ITER_TYPE_DICT);
3187 if (real->wrote_dict_key)
3189 _dbus_warn ("Appendinging multiple dict key names\n");
3193 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, value))
3198 dbus_message_iter_append_done (real);
3199 real->wrote_dict_key = TRUE;
3205 array_iter_type_mark_done (DBusMessageRealIter *iter)
3209 if (iter->type == DBUS_MESSAGE_ITER_TYPE_ARRAY)
3210 array_iter_type_mark_done (iter->parent_iter);
3214 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&iter->message->body),
3215 sizeof (dbus_uint32_t));
3217 /* Empty length for now, backfill later */
3218 if (!_dbus_marshal_uint32 (&iter->message->body, iter->message->byte_order, 0))
3220 _dbus_string_set_length (&iter->message->body, iter->pos);
3224 iter->container_start = _dbus_string_get_length (&iter->message->body);
3225 iter->container_length_pos = len_pos;
3226 iter->array_type_done = TRUE;
3232 append_array_type (DBusMessageRealIter *real,
3234 dbus_bool_t *array_type_done,
3235 int *array_type_pos)
3237 int existing_element_type;
3239 if (!dbus_message_iter_append_type (real, DBUS_TYPE_ARRAY))
3242 if (real->type == DBUS_MESSAGE_ITER_TYPE_ARRAY &&
3243 real->array_type_done)
3245 existing_element_type = iter_get_array_type (real, array_type_pos);
3246 if (existing_element_type != element_type)
3248 _dbus_warn ("Appending array of %s, when expecting array of %s\n",
3249 _dbus_type_to_string (element_type),
3250 _dbus_type_to_string (existing_element_type));
3251 _dbus_string_set_length (&real->message->body, real->pos);
3254 if (array_type_done != NULL)
3255 *array_type_done = TRUE;
3259 if (array_type_pos != NULL)
3260 *array_type_pos = _dbus_string_get_length (&real->message->body);
3262 /* Append element type */
3263 if (!_dbus_string_append_byte (&real->message->body, element_type))
3265 _dbus_string_set_length (&real->message->body, real->pos);
3269 if (array_type_done != NULL)
3270 *array_type_done = element_type != DBUS_TYPE_ARRAY;
3272 if (element_type != DBUS_TYPE_ARRAY &&
3273 !array_iter_type_mark_done (real))
3281 * Appends an array to the message and initializes an iterator that
3282 * can be used to append to the array.
3284 * @param iter an iterator pointing to the end of the message
3285 * @param array_iter pointer to an iter that will be initialized
3286 * @param element_type the type of the array elements
3287 * @returns #TRUE on success
3290 dbus_message_iter_append_array (DBusMessageIter *iter,
3291 DBusMessageIter *array_iter,
3294 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3295 DBusMessageRealIter *array_real = (DBusMessageRealIter *)array_iter;
3298 dbus_bool_t array_type_done;
3300 if (element_type == DBUS_TYPE_NIL)
3302 _dbus_warn ("Can't create NIL arrays\n");
3306 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3308 if (!append_array_type (real, element_type, &array_type_done, &array_type_pos))
3311 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&real->message->body), sizeof (dbus_uint32_t));
3313 if (array_type_done)
3315 /* Empty length for now, backfill later */
3316 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, 0))
3318 _dbus_string_set_length (&real->message->body, real->pos);
3323 array_real->parent_iter = real;
3324 array_real->message = real->message;
3325 array_real->changed_stamp = real->message->changed_stamp;
3327 array_real->type = DBUS_MESSAGE_ITER_TYPE_ARRAY;
3328 array_real->pos = _dbus_string_get_length (&real->message->body);
3329 array_real->end = array_real->end;
3331 array_real->container_start = array_real->pos;
3332 array_real->container_length_pos = len_pos;
3333 array_real->wrote_dict_key = 0;
3334 array_real->array_type_done = array_type_done;
3335 array_real->array_type_pos = array_type_pos;
3337 dbus_message_iter_append_done (array_real);
3343 * Appends a dict to the message and initializes an iterator that
3344 * can be used to append to the dict.
3346 * @param iter an iterator pointing to the end of the message
3347 * @param dict_iter pointer to an iter that will be initialized
3348 * @returns #TRUE on success
3351 dbus_message_iter_append_dict (DBusMessageIter *iter,
3352 DBusMessageIter *dict_iter)
3354 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3355 DBusMessageRealIter *dict_real = (DBusMessageRealIter *)dict_iter;
3358 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3360 if (!dbus_message_iter_append_type (real, DBUS_TYPE_DICT))
3363 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&real->message->body), sizeof (dbus_uint32_t));
3365 /* Empty length for now, backfill later */
3366 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, 0))
3368 _dbus_string_set_length (&real->message->body, real->pos);
3372 dict_real->parent_iter = real;
3373 dict_real->message = real->message;
3374 dict_real->changed_stamp = real->message->changed_stamp;
3376 dict_real->type = DBUS_MESSAGE_ITER_TYPE_DICT;
3377 dict_real->pos = _dbus_string_get_length (&real->message->body);
3378 dict_real->end = dict_real->end;
3380 dict_real->container_start = dict_real->pos;
3381 dict_real->container_length_pos = len_pos;
3382 dict_real->wrote_dict_key = 0;
3384 dbus_message_iter_append_done (dict_real);
3391 * Appends a boolean array to the message.
3393 * @param iter an iterator pointing to the end of the message
3394 * @param value the array
3395 * @param len the length of the array
3396 * @returns #TRUE on success
3399 dbus_message_iter_append_boolean_array (DBusMessageIter *iter,
3400 unsigned const char *value,
3403 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3405 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3407 if (!append_array_type (real, DBUS_TYPE_BOOLEAN, NULL, NULL))
3410 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, value, len))
3412 _dbus_string_set_length (&real->message->body, real->pos);
3416 dbus_message_iter_append_done (real);
3422 * Appends a 32 bit signed integer array to the message.
3424 * @param iter an iterator pointing to the end of the message
3425 * @param value the array
3426 * @param len the length of the array
3427 * @returns #TRUE on success
3430 dbus_message_iter_append_int32_array (DBusMessageIter *iter,
3431 const dbus_int32_t *value,
3434 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3436 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3438 if (!append_array_type (real, DBUS_TYPE_INT32, NULL, NULL))
3441 if (!_dbus_marshal_int32_array (&real->message->body, real->message->byte_order, value, len))
3443 _dbus_string_set_length (&real->message->body, real->pos);
3447 dbus_message_iter_append_done (real);
3453 * Appends a 32 bit unsigned integer array to the message.
3455 * @param iter an iterator pointing to the end of the message
3456 * @param value the array
3457 * @param len the length of the array
3458 * @returns #TRUE on success
3461 dbus_message_iter_append_uint32_array (DBusMessageIter *iter,
3462 const dbus_uint32_t *value,
3465 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3467 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3469 if (!append_array_type (real, DBUS_TYPE_UINT32, NULL, NULL))
3472 if (!_dbus_marshal_uint32_array (&real->message->body, real->message->byte_order, value, len))
3474 _dbus_string_set_length (&real->message->body, real->pos);
3478 dbus_message_iter_append_done (real);
3483 #ifdef DBUS_HAVE_INT64
3486 * Appends a 64 bit signed integer array to the message.
3488 * This function only exists if #DBUS_HAVE_INT64 is defined.
3490 * @param iter an iterator pointing to the end of the message
3491 * @param value the array
3492 * @param len the length of the array
3493 * @returns #TRUE on success
3496 dbus_message_iter_append_int64_array (DBusMessageIter *iter,
3497 const dbus_int64_t *value,
3500 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3502 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3504 if (!append_array_type (real, DBUS_TYPE_INT64, NULL, NULL))
3507 if (!_dbus_marshal_int64_array (&real->message->body, real->message->byte_order, value, len))
3509 _dbus_string_set_length (&real->message->body, real->pos);
3513 dbus_message_iter_append_done (real);
3519 * Appends a 64 bit unsigned integer array to the message.
3521 * This function only exists if #DBUS_HAVE_INT64 is defined.
3523 * @param iter an iterator pointing to the end of the message
3524 * @param value the array
3525 * @param len the length of the array
3526 * @returns #TRUE on success
3529 dbus_message_iter_append_uint64_array (DBusMessageIter *iter,
3530 const dbus_uint64_t *value,
3533 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3535 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3537 if (!append_array_type (real, DBUS_TYPE_UINT64, NULL, NULL))
3540 if (!_dbus_marshal_uint64_array (&real->message->body, real->message->byte_order, value, len))
3542 _dbus_string_set_length (&real->message->body, real->pos);
3546 dbus_message_iter_append_done (real);
3550 #endif /* DBUS_HAVE_INT64 */
3553 * Appends a double array to the message.
3555 * @param iter an iterator pointing to the end of the message
3556 * @param value the array
3557 * @param len the length of the array
3558 * @returns #TRUE on success
3561 dbus_message_iter_append_double_array (DBusMessageIter *iter,
3562 const double *value,
3565 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3567 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3569 if (!append_array_type (real, DBUS_TYPE_DOUBLE, NULL, NULL))
3572 if (!_dbus_marshal_double_array (&real->message->body, real->message->byte_order, value, len))
3574 _dbus_string_set_length (&real->message->body, real->pos);
3578 dbus_message_iter_append_done (real);
3584 * Appends a byte array to the message.
3586 * @param iter an iterator pointing to the end of the message
3587 * @param value the array
3588 * @param len the length of the array
3589 * @returns #TRUE on success
3592 dbus_message_iter_append_byte_array (DBusMessageIter *iter,
3593 unsigned const char *value,
3596 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3598 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3600 if (!append_array_type (real, DBUS_TYPE_BYTE, NULL, NULL))
3603 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, value, len))
3605 _dbus_string_set_length (&real->message->body, real->pos);
3609 dbus_message_iter_append_done (real);
3615 * Appends a string array to the message.
3617 * @param iter an iterator pointing to the end of the message
3618 * @param value the array
3619 * @param len the length of the array
3620 * @returns #TRUE on success
3623 dbus_message_iter_append_string_array (DBusMessageIter *iter,
3627 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3629 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3631 if (!append_array_type (real, DBUS_TYPE_STRING, NULL, NULL))
3634 if (!_dbus_marshal_string_array (&real->message->body, real->message->byte_order, value, len))
3636 _dbus_string_set_length (&real->message->body, real->pos);
3640 dbus_message_iter_append_done (real);
3646 * Sets the message sender.
3648 * @param message the message
3649 * @param sender the sender
3650 * @returns #FALSE if not enough memory
3653 dbus_message_set_sender (DBusMessage *message,
3656 _dbus_return_val_if_fail (message != NULL, FALSE);
3657 _dbus_return_val_if_fail (!message->locked, FALSE);
3661 delete_string_field (message, FIELD_SENDER);
3666 return set_string_field (message,
3673 * Sets a flag indicating that the message is an error reply
3674 * message, i.e. an "exception" rather than a normal response.
3676 * @param message the message
3677 * @param is_error_reply #TRUE if this is an error message.
3680 dbus_message_set_is_error (DBusMessage *message,
3681 dbus_bool_t is_error_reply)
3685 _dbus_return_if_fail (message != NULL);
3686 _dbus_return_if_fail (!message->locked);
3688 header = _dbus_string_get_data_len (&message->header, 1, 1);
3691 *header |= DBUS_HEADER_FLAG_ERROR;
3693 *header &= ~DBUS_HEADER_FLAG_ERROR;
3697 * Returns #TRUE if the message is an error
3698 * reply to some previous message we sent.
3700 * @param message the message
3701 * @returns #TRUE if the message is an error
3704 dbus_message_get_is_error (DBusMessage *message)
3708 _dbus_return_val_if_fail (message != NULL, FALSE);
3710 header = _dbus_string_get_const_data_len (&message->header, 1, 1);
3712 return (*header & DBUS_HEADER_FLAG_ERROR) != 0;
3716 * Gets the service which originated this message,
3717 * or #NULL if unknown or inapplicable.
3719 * @param message the message
3720 * @returns the service name or #NULL
3723 dbus_message_get_sender (DBusMessage *message)
3725 _dbus_return_val_if_fail (message != NULL, NULL);
3727 return get_string_field (message, FIELD_SENDER, NULL);
3731 * Checks whether the message has the given name.
3732 * If the message has no name or has a different
3733 * name, returns #FALSE.
3735 * @param message the message
3736 * @param name the name to check (must not be #NULL)
3738 * @returns #TRUE if the message has the given name
3741 dbus_message_has_name (DBusMessage *message,
3746 _dbus_return_val_if_fail (message != NULL, FALSE);
3747 _dbus_return_val_if_fail (name != NULL, FALSE);
3749 n = dbus_message_get_name (message);
3751 if (n && strcmp (n, name) == 0)
3758 * Checks whether the message was sent to the given service. If the
3759 * message has no service specified or has a different name, returns
3762 * @param message the message
3763 * @param service the service to check (must not be #NULL)
3765 * @returns #TRUE if the message has the given destination service
3768 dbus_message_has_destination (DBusMessage *message,
3769 const char *service)
3773 _dbus_return_val_if_fail (message != NULL, FALSE);
3774 _dbus_return_val_if_fail (service != NULL, FALSE);
3776 s = dbus_message_get_destination (message);
3778 if (s && strcmp (s, service) == 0)
3785 * Checks whether the message has the given service as its sender. If
3786 * the message has no sender specified or has a different sender,
3787 * returns #FALSE. Note that if a peer application owns multiple
3788 * services, its messages will have only one of those services as the
3789 * sender (usually the base service). So you can't use this
3790 * function to prove the sender didn't own service Foo, you can
3791 * only use it to prove that it did.
3793 * @param message the message
3794 * @param service the service to check (must not be #NULL)
3796 * @returns #TRUE if the message has the given origin service
3799 dbus_message_has_sender (DBusMessage *message,
3800 const char *service)
3804 _dbus_assert (service != NULL);
3806 s = dbus_message_get_sender (message);
3808 if (s && strcmp (s, service) == 0)
3815 * Sets a #DBusError based on the contents of the given
3816 * message. The error is only set if the message
3817 * is an error message, as in dbus_message_get_is_error().
3818 * The name of the error is set to the name of the message,
3819 * and the error message is set to the first argument
3820 * if the argument exists and is a string.
3822 * The return value indicates whether the error was set (the error is
3823 * set if and only if the message is an error message).
3824 * So you can check for an error reply and convert it to DBusError
3827 * @param error the error to set
3828 * @param message the message to set it from
3829 * @returns #TRUE if dbus_message_get_is_error() returns #TRUE for the message
3832 dbus_set_error_from_message (DBusError *error,
3833 DBusMessage *message)
3837 _dbus_return_val_if_fail (message != NULL, FALSE);
3838 _dbus_return_val_if_error_is_set (error, FALSE);
3840 if (!dbus_message_get_is_error (message))
3844 dbus_message_get_args (message, NULL,
3845 DBUS_TYPE_STRING, &str,
3848 dbus_set_error (error, dbus_message_get_name (message),
3849 str ? "%s" : NULL, str);
3859 * @addtogroup DBusMessageInternals
3864 * @typedef DBusMessageLoader
3866 * The DBusMessageLoader object encapsulates the process of converting
3867 * a byte stream into a series of DBusMessage. It buffers the incoming
3868 * bytes as efficiently as possible, and generates a queue of
3869 * messages. DBusMessageLoader is typically used as part of a
3870 * DBusTransport implementation. The DBusTransport then hands off
3871 * the loaded messages to a DBusConnection, making the messages
3872 * visible to the application.
3874 * @todo write tests for break-loader that a) randomly delete header
3875 * fields and b) set string fields to zero-length and other funky
3880 /* we definitely use signed ints for sizes, so don't exceed
3881 * _DBUS_INT_MAX; and add 16 for paranoia, since a message
3882 * over 128M is pretty nuts anyhow.
3886 * The maximum sane message size.
3888 #define MAX_SANE_MESSAGE_SIZE (_DBUS_INT_MAX/16)
3891 * Implementation details of DBusMessageLoader.
3892 * All members are private.
3894 struct DBusMessageLoader
3896 int refcount; /**< Reference count. */
3898 DBusString data; /**< Buffered data */
3900 DBusList *messages; /**< Complete messages. */
3902 long max_message_size; /**< Maximum size of a message */
3904 unsigned int buffer_outstanding : 1; /**< Someone is using the buffer to read */
3906 unsigned int corrupted : 1; /**< We got broken data, and are no longer working */
3910 * The initial buffer size of the message loader.
3912 * @todo this should be based on min header size plus some average
3913 * body size, or something. Or rather, the min header size only, if we
3914 * want to try to read only the header, store that in a DBusMessage,
3915 * then read only the body and store that, etc., depends on
3916 * how we optimize _dbus_message_loader_get_buffer() and what
3917 * the exact message format is.
3919 #define INITIAL_LOADER_DATA_LEN 32
3922 * Creates a new message loader. Returns #NULL if memory can't
3925 * @returns new loader, or #NULL.
3928 _dbus_message_loader_new (void)
3930 DBusMessageLoader *loader;
3932 loader = dbus_new0 (DBusMessageLoader, 1);
3936 loader->refcount = 1;
3938 /* Try to cap message size at something that won't *totally* hose
3939 * the system if we have a couple of them.
3941 loader->max_message_size = _DBUS_ONE_MEGABYTE * 32;
3943 if (!_dbus_string_init (&loader->data))
3949 /* preallocate the buffer for speed, ignore failure */
3950 _dbus_string_set_length (&loader->data, INITIAL_LOADER_DATA_LEN);
3951 _dbus_string_set_length (&loader->data, 0);
3957 * Increments the reference count of the loader.
3959 * @param loader the loader.
3962 _dbus_message_loader_ref (DBusMessageLoader *loader)
3964 loader->refcount += 1;
3968 * Decrements the reference count of the loader and finalizes the
3969 * loader when the count reaches zero.
3971 * @param loader the loader.
3974 _dbus_message_loader_unref (DBusMessageLoader *loader)
3976 loader->refcount -= 1;
3977 if (loader->refcount == 0)
3979 _dbus_list_foreach (&loader->messages,
3980 (DBusForeachFunction) dbus_message_unref,
3982 _dbus_list_clear (&loader->messages);
3983 _dbus_string_free (&loader->data);
3989 * Gets the buffer to use for reading data from the network. Network
3990 * data is read directly into an allocated buffer, which is then used
3991 * in the DBusMessage, to avoid as many extra memcpy's as possible.
3992 * The buffer must always be returned immediately using
3993 * _dbus_message_loader_return_buffer(), even if no bytes are
3994 * successfully read.
3996 * @todo this function can be a lot more clever. For example
3997 * it can probably always return a buffer size to read exactly
3998 * the body of the next message, thus avoiding any memory wastage
4001 * @todo we need to enforce a max length on strings in header fields.
4003 * @param loader the message loader.
4004 * @param buffer the buffer
4007 _dbus_message_loader_get_buffer (DBusMessageLoader *loader,
4008 DBusString **buffer)
4010 _dbus_assert (!loader->buffer_outstanding);
4012 *buffer = &loader->data;
4014 loader->buffer_outstanding = TRUE;
4018 * The smallest header size that can occur.
4019 * (It won't be valid)
4021 #define DBUS_MINIMUM_HEADER_SIZE 16
4023 /** Pack four characters as in "abcd" into a uint32 */
4024 #define FOUR_CHARS_TO_UINT32(a, b, c, d) \
4025 ((((dbus_uint32_t)a) << 24) | \
4026 (((dbus_uint32_t)b) << 16) | \
4027 (((dbus_uint32_t)c) << 8) | \
4030 /** DBUS_HEADER_FIELD_NAME packed into a dbus_uint32_t */
4031 #define DBUS_HEADER_FIELD_NAME_AS_UINT32 \
4032 FOUR_CHARS_TO_UINT32 ('n', 'a', 'm', 'e')
4034 /** DBUS_HEADER_FIELD_SERVICE packed into a dbus_uint32_t */
4035 #define DBUS_HEADER_FIELD_SERVICE_AS_UINT32 \
4036 FOUR_CHARS_TO_UINT32 ('s', 'r', 'v', 'c')
4038 /** DBUS_HEADER_FIELD_REPLY packed into a dbus_uint32_t */
4039 #define DBUS_HEADER_FIELD_REPLY_AS_UINT32 \
4040 FOUR_CHARS_TO_UINT32 ('r', 'p', 'l', 'y')
4042 /** DBUS_HEADER_FIELD_SENDER Packed into a dbus_uint32_t */
4043 #define DBUS_HEADER_FIELD_SENDER_AS_UINT32 \
4044 FOUR_CHARS_TO_UINT32 ('s', 'n', 'd', 'r')
4047 decode_string_field (const DBusString *data,
4048 HeaderField fields[FIELD_LAST],
4052 const char *field_name)
4055 int string_data_pos;
4057 if (fields[field].offset >= 0)
4059 _dbus_verbose ("%s field provided twice\n",
4064 if (type != DBUS_TYPE_STRING)
4066 _dbus_verbose ("%s field has wrong type %s\n",
4067 field_name, _dbus_type_to_string (type));
4071 /* skip padding after typecode, skip string length;
4072 * we assume that the string arg has already been validated
4073 * for sanity and UTF-8
4075 string_data_pos = _DBUS_ALIGN_VALUE (pos, 4) + 4;
4076 _dbus_assert (string_data_pos < _dbus_string_get_length (data));
4078 _dbus_string_init_const (&tmp,
4079 _dbus_string_get_const_data (data) + string_data_pos);
4081 if (field == FIELD_NAME)
4083 if (!_dbus_string_validate_name (&tmp, 0, _dbus_string_get_length (&tmp)))
4085 _dbus_verbose ("%s field has invalid content \"%s\"\n",
4086 field_name, _dbus_string_get_const_data (&tmp));
4090 if (_dbus_string_starts_with_c_str (&tmp,
4091 DBUS_NAMESPACE_LOCAL_MESSAGE))
4093 _dbus_verbose ("Message is in the local namespace\n");
4099 if (!_dbus_string_validate_service (&tmp, 0, _dbus_string_get_length (&tmp)))
4101 _dbus_verbose ("%s field has invalid content \"%s\"\n",
4102 field_name, _dbus_string_get_const_data (&tmp));
4107 fields[field].offset = _DBUS_ALIGN_VALUE (pos, 4);
4110 _dbus_verbose ("Found field %s name at offset %d\n",
4111 field_name, fields[field].offset);
4118 decode_header_data (const DBusString *data,
4121 HeaderField fields[FIELD_LAST],
4122 int *message_padding)
4129 if (header_len < 16)
4133 while (i < FIELD_LAST)
4135 fields[i].offset = -1;
4139 fields[FIELD_HEADER_LENGTH].offset = 4;
4140 fields[FIELD_BODY_LENGTH].offset = 8;
4141 fields[FIELD_CLIENT_SERIAL].offset = 12;
4143 /* Now handle the named fields. A real named field is at least 4
4144 * bytes for the name, plus a type code (1 byte) plus padding. So
4145 * if we have less than 8 bytes left, it must be alignment padding,
4146 * not a field. While >= 8 bytes can't be entirely alignment
4150 while ((pos + 7) < header_len)
4152 pos = _DBUS_ALIGN_VALUE (pos, 4);
4154 if ((pos + 4) > header_len)
4157 field =_dbus_string_get_const_data_len (data, pos, 4);
4160 _dbus_assert (_DBUS_ALIGN_ADDRESS (field, 4) == field);
4162 if (!_dbus_marshal_validate_type (data, pos, &type, &pos))
4164 _dbus_verbose ("Failed to validate type of named header field\n");
4168 if (!_dbus_marshal_validate_arg (data, byte_order, 0, type, -1, pos, &new_pos))
4170 _dbus_verbose ("Failed to validate argument to named header field\n");
4174 if (new_pos > header_len)
4176 _dbus_verbose ("Named header field tries to extend beyond header length\n");
4180 switch (DBUS_UINT32_FROM_BE (*(int*)field))
4182 case DBUS_HEADER_FIELD_SERVICE_AS_UINT32:
4183 if (!decode_string_field (data, fields, pos, type,
4185 DBUS_HEADER_FIELD_SERVICE))
4189 case DBUS_HEADER_FIELD_NAME_AS_UINT32:
4190 if (!decode_string_field (data, fields, pos, type,
4192 DBUS_HEADER_FIELD_NAME))
4196 case DBUS_HEADER_FIELD_SENDER_AS_UINT32:
4197 if (!decode_string_field (data, fields, pos, type,
4199 DBUS_HEADER_FIELD_SENDER))
4203 case DBUS_HEADER_FIELD_REPLY_AS_UINT32:
4204 if (fields[FIELD_REPLY_SERIAL].offset >= 0)
4206 _dbus_verbose ("%s field provided twice\n",
4207 DBUS_HEADER_FIELD_REPLY);
4211 if (type != DBUS_TYPE_UINT32)
4213 _dbus_verbose ("%s field has wrong type\n", DBUS_HEADER_FIELD_REPLY);
4217 fields[FIELD_REPLY_SERIAL].offset = _DBUS_ALIGN_VALUE (pos, 4);
4219 _dbus_verbose ("Found reply serial at offset %d\n",
4220 fields[FIELD_REPLY_SERIAL].offset);
4224 _dbus_verbose ("Ignoring an unknown header field: %c%c%c%c at offset %d\n",
4225 field[0], field[1], field[2], field[3], pos);
4231 if (pos < header_len)
4233 /* Alignment padding, verify that it's nul */
4234 _dbus_assert ((header_len - pos) < 8);
4236 if (!_dbus_string_validate_nul (data,
4237 pos, (header_len - pos)))
4239 _dbus_verbose ("header alignment padding is not nul\n");
4244 /* Name field is mandatory */
4245 if (fields[FIELD_NAME].offset < 0)
4247 _dbus_verbose ("No %s field provided\n",
4248 DBUS_HEADER_FIELD_NAME);
4252 if (message_padding)
4253 *message_padding = header_len - pos;
4259 * Returns a buffer obtained from _dbus_message_loader_get_buffer(),
4260 * indicating to the loader how many bytes of the buffer were filled
4261 * in. This function must always be called, even if no bytes were
4262 * successfully read.
4264 * @param loader the loader.
4265 * @param buffer the buffer.
4266 * @param bytes_read number of bytes that were read into the buffer.
4269 _dbus_message_loader_return_buffer (DBusMessageLoader *loader,
4273 _dbus_assert (loader->buffer_outstanding);
4274 _dbus_assert (buffer == &loader->data);
4276 loader->buffer_outstanding = FALSE;
4280 * Converts buffered data into messages.
4282 * @param loader the loader.
4283 * @returns #TRUE if we had enough memory to finish.
4286 _dbus_message_loader_queue_messages (DBusMessageLoader *loader)
4288 if (loader->corrupted)
4291 while (_dbus_string_get_length (&loader->data) >= 16)
4293 DBusMessage *message;
4294 const char *header_data;
4295 int byte_order, header_len, body_len, header_padding;
4296 dbus_uint32_t header_len_unsigned, body_len_unsigned;
4298 header_data = _dbus_string_get_const_data_len (&loader->data, 0, 16);
4300 _dbus_assert (_DBUS_ALIGN_ADDRESS (header_data, 4) == header_data);
4302 if (header_data[2] != DBUS_MAJOR_PROTOCOL_VERSION)
4304 _dbus_verbose ("Message has protocol version %d ours is %d\n",
4305 (int) header_data[2], DBUS_MAJOR_PROTOCOL_VERSION);
4306 loader->corrupted = TRUE;
4310 byte_order = header_data[0];
4312 if (byte_order != DBUS_LITTLE_ENDIAN &&
4313 byte_order != DBUS_BIG_ENDIAN)
4315 _dbus_verbose ("Message with bad byte order '%c' received\n",
4317 loader->corrupted = TRUE;
4321 header_len_unsigned = _dbus_unpack_uint32 (byte_order, header_data + 4);
4322 body_len_unsigned = _dbus_unpack_uint32 (byte_order, header_data + 8);
4324 if (header_len_unsigned < 16)
4326 _dbus_verbose ("Message had broken too-small header length %u\n",
4327 header_len_unsigned);
4328 loader->corrupted = TRUE;
4332 if (header_len_unsigned > (unsigned) MAX_SANE_MESSAGE_SIZE ||
4333 body_len_unsigned > (unsigned) MAX_SANE_MESSAGE_SIZE)
4335 _dbus_verbose ("Header or body length too large (%u %u)\n",
4336 header_len_unsigned,
4338 loader->corrupted = TRUE;
4342 /* Now that we know the values are in signed range, get
4343 * rid of stupid unsigned, just causes bugs
4345 header_len = header_len_unsigned;
4346 body_len = body_len_unsigned;
4348 if (_DBUS_ALIGN_VALUE (header_len, 8) != header_len_unsigned)
4351 _dbus_verbose ("header length %d is not aligned to 8 bytes\n",
4353 loader->corrupted = TRUE;
4357 if (header_len + body_len > loader->max_message_size)
4359 _dbus_verbose ("Message claimed length header = %d body = %d exceeds max message length %ld\n",
4360 header_len, body_len, loader->max_message_size);
4361 loader->corrupted = TRUE;
4365 if (_dbus_string_get_length (&loader->data) >= (header_len + body_len))
4367 HeaderField fields[FIELD_LAST];
4372 _dbus_verbose_bytes_of_string (&loader->data, 0, header_len + body_len);
4374 if (!decode_header_data (&loader->data, header_len, byte_order,
4375 fields, &header_padding))
4377 _dbus_verbose ("Header was invalid\n");
4378 loader->corrupted = TRUE;
4382 next_arg = header_len;
4383 while (next_arg < (header_len + body_len))
4386 int prev = next_arg;
4388 if (!_dbus_marshal_validate_type (&loader->data, next_arg,
4391 _dbus_verbose ("invalid typecode at offset %d\n", prev);
4392 loader->corrupted = TRUE;
4396 if (!_dbus_marshal_validate_arg (&loader->data,
4403 _dbus_verbose ("invalid type data at %d, next_arg\n", next_arg);
4404 loader->corrupted = TRUE;
4408 _dbus_assert (next_arg > prev);
4411 if (next_arg > (header_len + body_len))
4413 _dbus_verbose ("end of last arg at %d but message has len %d+%d=%d\n",
4414 next_arg, header_len, body_len,
4415 header_len + body_len);
4416 loader->corrupted = TRUE;
4420 message = dbus_message_new_empty_header ();
4421 if (message == NULL)
4423 _dbus_verbose ("Failed to allocate empty message\n");
4427 message->byte_order = byte_order;
4428 message->header_padding = header_padding;
4430 /* Copy in the offsets we found */
4432 while (i < FIELD_LAST)
4434 message->header_fields[i] = fields[i];
4438 if (!_dbus_list_append (&loader->messages, message))
4440 _dbus_verbose ("Failed to append new message to loader queue\n");
4441 dbus_message_unref (message);
4445 _dbus_assert (_dbus_string_get_length (&message->header) == 0);
4446 _dbus_assert (_dbus_string_get_length (&message->body) == 0);
4448 _dbus_assert (_dbus_string_get_length (&loader->data) >=
4449 (header_len + body_len));
4451 if (!_dbus_string_move_len (&loader->data, 0, header_len, &message->header, 0))
4453 _dbus_verbose ("Failed to move header into new message\n");
4454 _dbus_list_remove_last (&loader->messages, message);
4455 dbus_message_unref (message);
4459 if (!_dbus_string_move_len (&loader->data, 0, body_len, &message->body, 0))
4463 _dbus_verbose ("Failed to move body into new message\n");
4465 /* put the header back, we'll try again later */
4466 result = _dbus_string_copy_len (&message->header, 0, header_len,
4468 _dbus_assert (result); /* because DBusString never reallocs smaller */
4470 _dbus_list_remove_last (&loader->messages, message);
4471 dbus_message_unref (message);
4475 _dbus_assert (_dbus_string_get_length (&message->header) == header_len);
4476 _dbus_assert (_dbus_string_get_length (&message->body) == body_len);
4478 /* Fill in caches */
4479 /* FIXME there's no type check if the field has the wrong type */
4480 message->reply_serial = get_uint_field (message,
4481 FIELD_REPLY_SERIAL);
4482 message->client_serial = get_uint_field (message,
4483 FIELD_CLIENT_SERIAL);
4485 _dbus_verbose ("Loaded message %p\n", message);
4495 * Peeks at first loaded message, returns #NULL if no messages have
4498 * @param loader the loader.
4499 * @returns the next message, or #NULL if none.
4502 _dbus_message_loader_peek_message (DBusMessageLoader *loader)
4504 if (loader->messages)
4505 return loader->messages->data;
4511 * Pops a loaded message (passing ownership of the message
4512 * to the caller). Returns #NULL if no messages have been
4515 * @param loader the loader.
4516 * @returns the next message, or #NULL if none.
4519 _dbus_message_loader_pop_message (DBusMessageLoader *loader)
4521 return _dbus_list_pop_first (&loader->messages);
4525 * Pops a loaded message inside a list link (passing ownership of the
4526 * message and link to the caller). Returns #NULL if no messages have
4529 * @param loader the loader.
4530 * @returns the next message link, or #NULL if none.
4533 _dbus_message_loader_pop_message_link (DBusMessageLoader *loader)
4535 return _dbus_list_pop_first_link (&loader->messages);
4539 * Returns a popped message link, used to undo a pop.
4541 * @param loader the loader
4542 * @param link the link with a message in it
4545 _dbus_message_loader_putback_message_link (DBusMessageLoader *loader,
4548 _dbus_list_prepend_link (&loader->messages, link);
4552 * Checks whether the loader is confused due to bad data.
4553 * If messages are received that are invalid, the
4554 * loader gets confused and gives up permanently.
4555 * This state is called "corrupted."
4557 * @param loader the loader
4558 * @returns #TRUE if the loader is hosed.
4561 _dbus_message_loader_get_is_corrupted (DBusMessageLoader *loader)
4563 return loader->corrupted;
4567 * Sets the maximum size message we allow.
4569 * @param loader the loader
4570 * @param size the max message size in bytes
4573 _dbus_message_loader_set_max_message_size (DBusMessageLoader *loader,
4576 if (size > MAX_SANE_MESSAGE_SIZE)
4578 _dbus_verbose ("clamping requested max message size %ld to %d\n",
4579 size, MAX_SANE_MESSAGE_SIZE);
4580 size = MAX_SANE_MESSAGE_SIZE;
4582 loader->max_message_size = size;
4586 * Gets the maximum allowed message size in bytes.
4588 * @param loader the loader
4589 * @returns max size in bytes
4592 _dbus_message_loader_get_max_message_size (DBusMessageLoader *loader)
4594 return loader->max_message_size;
4598 #ifdef DBUS_BUILD_TESTS
4599 #include "dbus-test.h"
4603 message_iter_test (DBusMessage *message)
4605 DBusMessageIter iter, dict, array, array2;
4607 unsigned char *data;
4608 dbus_int32_t *our_int_array;
4611 dbus_message_iter_init (message, &iter);
4614 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_STRING)
4615 _dbus_assert_not_reached ("Argument type isn't string");
4617 str = dbus_message_iter_get_string (&iter);
4618 if (strcmp (str, "Test string") != 0)
4619 _dbus_assert_not_reached ("Strings differ");
4622 if (!dbus_message_iter_next (&iter))
4623 _dbus_assert_not_reached ("Reached end of arguments");
4625 /* Signed integer tests */
4626 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_INT32)
4627 _dbus_assert_not_reached ("Argument type isn't int32");
4629 if (dbus_message_iter_get_int32 (&iter) != -0x12345678)
4630 _dbus_assert_not_reached ("Signed integers differ");
4632 if (!dbus_message_iter_next (&iter))
4633 _dbus_assert_not_reached ("Reached end of fields");
4635 /* Unsigned integer tests */
4636 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_UINT32)
4637 _dbus_assert_not_reached ("Argument type isn't int32");
4639 if (dbus_message_iter_get_uint32 (&iter) != 0xedd1e)
4640 _dbus_assert_not_reached ("Unsigned integers differ");
4642 if (!dbus_message_iter_next (&iter))
4643 _dbus_assert_not_reached ("Reached end of arguments");
4646 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DOUBLE)
4647 _dbus_assert_not_reached ("Argument type isn't double");
4649 if (dbus_message_iter_get_double (&iter) != 3.14159)
4650 _dbus_assert_not_reached ("Doubles differ");
4652 if (!dbus_message_iter_next (&iter))
4653 _dbus_assert_not_reached ("Reached end of arguments");
4655 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_ARRAY)
4656 _dbus_assert_not_reached ("Argument type not an array");
4658 if (dbus_message_iter_get_array_type (&iter) != DBUS_TYPE_DOUBLE)
4659 _dbus_assert_not_reached ("Array type not double");
4662 if (!dbus_message_iter_init_array_iterator (&iter, &array, NULL))
4663 _dbus_assert_not_reached ("Array init failed");
4665 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_DOUBLE)
4666 _dbus_assert_not_reached ("Argument type isn't double");
4668 if (dbus_message_iter_get_double (&array) != 1.5)
4669 _dbus_assert_not_reached ("Unsigned integers differ");
4671 if (!dbus_message_iter_next (&array))
4672 _dbus_assert_not_reached ("Reached end of arguments");
4674 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_DOUBLE)
4675 _dbus_assert_not_reached ("Argument type isn't double");
4677 if (dbus_message_iter_get_double (&array) != 2.5)
4678 _dbus_assert_not_reached ("Unsigned integers differ");
4680 if (dbus_message_iter_next (&array))
4681 _dbus_assert_not_reached ("Didn't reach end of arguments");
4683 if (!dbus_message_iter_next (&iter))
4684 _dbus_assert_not_reached ("Reached end of arguments");
4689 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DICT)
4690 _dbus_assert_not_reached ("not dict type");
4692 if (!dbus_message_iter_init_dict_iterator (&iter, &dict))
4693 _dbus_assert_not_reached ("dict iter failed");
4695 str = dbus_message_iter_get_dict_key (&dict);
4696 if (str == NULL || strcmp (str, "test") != 0)
4697 _dbus_assert_not_reached ("wrong dict key");
4700 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_UINT32)
4701 _dbus_assert_not_reached ("wrong dict entry type");
4703 if (dbus_message_iter_get_uint32 (&dict) != 0xDEADBEEF)
4704 _dbus_assert_not_reached ("wrong dict entry value");
4706 if (!dbus_message_iter_next (&dict))
4707 _dbus_assert_not_reached ("reached end of dict");
4709 /* array of array of int32 (in dict) */
4711 str = dbus_message_iter_get_dict_key (&dict);
4712 if (str == NULL || strcmp (str, "array") != 0)
4713 _dbus_assert_not_reached ("wrong dict key");
4716 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_ARRAY)
4717 _dbus_assert_not_reached ("Argument type not an array");
4719 if (dbus_message_iter_get_array_type (&dict) != DBUS_TYPE_ARRAY)
4720 _dbus_assert_not_reached ("Array type not array");
4722 if (!dbus_message_iter_init_array_iterator (&dict, &array, NULL))
4723 _dbus_assert_not_reached ("Array init failed");
4725 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_ARRAY)
4726 _dbus_assert_not_reached ("Argument type isn't array");
4728 if (dbus_message_iter_get_array_type (&array) != DBUS_TYPE_INT32)
4729 _dbus_assert_not_reached ("Array type not int32");
4731 if (!dbus_message_iter_init_array_iterator (&array, &array2, NULL))
4732 _dbus_assert_not_reached ("Array init failed");
4734 if (dbus_message_iter_get_arg_type (&array2) != DBUS_TYPE_INT32)
4735 _dbus_assert_not_reached ("Argument type isn't int32");
4737 if (dbus_message_iter_get_int32 (&array2) != 0x12345678)
4738 _dbus_assert_not_reached ("Signed integers differ");
4740 if (!dbus_message_iter_next (&array2))
4741 _dbus_assert_not_reached ("Reached end of arguments");
4743 if (dbus_message_iter_get_int32 (&array2) != 0x23456781)
4744 _dbus_assert_not_reached ("Signed integers differ");
4746 if (dbus_message_iter_next (&array2))
4747 _dbus_assert_not_reached ("Didn't reached end of arguments");
4749 if (!dbus_message_iter_next (&array))
4750 _dbus_assert_not_reached ("Reached end of arguments");
4752 if (dbus_message_iter_get_array_type (&array) != DBUS_TYPE_INT32)
4753 _dbus_assert_not_reached ("Array type not int32");
4755 if (!dbus_message_iter_get_int32_array (&array,
4758 _dbus_assert_not_reached ("couldn't get int32 array");
4760 _dbus_assert (len == 3);
4761 _dbus_assert (our_int_array[0] == 0x34567812 &&
4762 our_int_array[1] == 0x45678123 &&
4763 our_int_array[2] == 0x56781234);
4764 dbus_free (our_int_array);
4766 if (dbus_message_iter_next (&array))
4767 _dbus_assert_not_reached ("Didn't reach end of array");
4769 if (dbus_message_iter_next (&dict))
4770 _dbus_assert_not_reached ("Didn't reach end of dict");
4772 if (!dbus_message_iter_next (&iter))
4773 _dbus_assert_not_reached ("Reached end of arguments");
4775 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_BYTE)
4777 _dbus_warn ("type was: %d\n", dbus_message_iter_get_arg_type (&iter));
4778 _dbus_assert_not_reached ("wrong type after dict (should be byte)");
4781 if (dbus_message_iter_get_byte (&iter) != 0xF0)
4782 _dbus_assert_not_reached ("wrong value after dict");
4785 if (!dbus_message_iter_next (&iter))
4786 _dbus_assert_not_reached ("Reached end of arguments");
4788 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_NIL)
4789 _dbus_assert_not_reached ("not a nil type");
4791 if (!dbus_message_iter_next (&iter))
4792 _dbus_assert_not_reached ("Reached end of arguments");
4794 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_NAMED)
4795 _dbus_assert_not_reached ("wrong type after dict");
4797 if (!dbus_message_iter_get_named (&iter, &str, &data, &len))
4798 _dbus_assert_not_reached ("failed to get named");
4800 _dbus_assert (strcmp (str, "named")==0);
4801 _dbus_assert (len == 5);
4802 _dbus_assert (strcmp (data, "data")==0);
4806 if (dbus_message_iter_next (&iter))
4807 _dbus_assert_not_reached ("Didn't reach end of arguments");
4812 check_message_handling_type (DBusMessageIter *iter,
4815 DBusMessageIter child_iter;
4821 case DBUS_TYPE_BYTE:
4822 dbus_message_iter_get_byte (iter);
4824 case DBUS_TYPE_BOOLEAN:
4825 dbus_message_iter_get_boolean (iter);
4827 case DBUS_TYPE_INT32:
4828 dbus_message_iter_get_int32 (iter);
4830 case DBUS_TYPE_UINT32:
4831 dbus_message_iter_get_uint32 (iter);
4833 case DBUS_TYPE_INT64:
4834 #ifdef DBUS_HAVE_INT64
4835 dbus_message_iter_get_int64 (iter);
4838 case DBUS_TYPE_UINT64:
4839 #ifdef DBUS_HAVE_INT64
4840 dbus_message_iter_get_uint64 (iter);
4843 case DBUS_TYPE_DOUBLE:
4844 dbus_message_iter_get_double (iter);
4846 case DBUS_TYPE_STRING:
4849 str = dbus_message_iter_get_string (iter);
4852 _dbus_warn ("NULL string in message\n");
4858 case DBUS_TYPE_NAMED:
4861 unsigned char *data;
4864 if (!dbus_message_iter_get_named (iter, &name, &data, &len))
4866 _dbus_warn ("error reading name from named type\n");
4873 case DBUS_TYPE_ARRAY:
4877 if (!dbus_message_iter_init_array_iterator (iter, &child_iter, &array_type))
4879 _dbus_warn ("Failed to init array iterator\n");
4883 while (dbus_message_iter_has_next (&child_iter))
4885 if (!check_message_handling_type (&child_iter, array_type))
4887 _dbus_warn ("error in array element\n");
4891 if (!dbus_message_iter_next (&child_iter))
4896 case DBUS_TYPE_DICT:
4901 if (!dbus_message_iter_init_dict_iterator (iter, &child_iter))
4903 _dbus_warn ("Failed to init dict iterator\n");
4907 while ((entry_type = dbus_message_iter_get_arg_type (&child_iter)) != DBUS_TYPE_INVALID)
4909 key = dbus_message_iter_get_dict_key (&child_iter);
4912 _dbus_warn ("error reading dict key\n");
4917 if (!check_message_handling_type (&child_iter, entry_type))
4919 _dbus_warn ("error in dict value\n");
4923 if (!dbus_message_iter_next (&child_iter))
4930 _dbus_warn ("unknown type %d\n", type);
4939 check_message_handling (DBusMessage *message)
4941 DBusMessageIter iter;
4944 dbus_uint32_t client_serial;
4948 client_serial = dbus_message_get_serial (message);
4950 /* can't use set_serial due to the assertions at the start of it */
4951 set_uint_field (message, FIELD_CLIENT_SERIAL,
4954 if (client_serial != dbus_message_get_serial (message))
4956 _dbus_warn ("get/set cycle for client_serial did not succeed\n");
4960 /* If we implement message_set_arg (message, n, value)
4961 * then we would want to test it here
4964 dbus_message_iter_init (message, &iter);
4965 while ((type = dbus_message_iter_get_arg_type (&iter)) != DBUS_TYPE_INVALID)
4967 if (!check_message_handling_type (&iter, type))
4970 if (!dbus_message_iter_next (&iter))
4981 check_have_valid_message (DBusMessageLoader *loader)
4983 DBusMessage *message;
4989 if (!_dbus_message_loader_queue_messages (loader))
4990 _dbus_assert_not_reached ("no memory to queue messages");
4992 if (_dbus_message_loader_get_is_corrupted (loader))
4994 _dbus_warn ("loader corrupted on message that was expected to be valid\n");
4998 message = _dbus_message_loader_pop_message (loader);
4999 if (message == NULL)
5001 _dbus_warn ("didn't load message that was expected to be valid (message not popped)\n");
5005 if (_dbus_string_get_length (&loader->data) > 0)
5007 _dbus_warn ("had leftover bytes from expected-to-be-valid single message\n");
5011 /* Verify that we're able to properly deal with the message.
5012 * For example, this would detect improper handling of messages
5013 * in nonstandard byte order.
5015 if (!check_message_handling (message))
5022 dbus_message_unref (message);
5028 check_invalid_message (DBusMessageLoader *loader)
5034 if (!_dbus_message_loader_queue_messages (loader))
5035 _dbus_assert_not_reached ("no memory to queue messages");
5037 if (!_dbus_message_loader_get_is_corrupted (loader))
5039 _dbus_warn ("loader not corrupted on message that was expected to be invalid\n");
5050 check_incomplete_message (DBusMessageLoader *loader)
5052 DBusMessage *message;
5058 if (!_dbus_message_loader_queue_messages (loader))
5059 _dbus_assert_not_reached ("no memory to queue messages");
5061 if (_dbus_message_loader_get_is_corrupted (loader))
5063 _dbus_warn ("loader corrupted on message that was expected to be valid (but incomplete)\n");
5067 message = _dbus_message_loader_pop_message (loader);
5068 if (message != NULL)
5070 _dbus_warn ("loaded message that was expected to be incomplete\n");
5078 dbus_message_unref (message);
5083 check_loader_results (DBusMessageLoader *loader,
5084 DBusMessageValidity validity)
5086 if (!_dbus_message_loader_queue_messages (loader))
5087 _dbus_assert_not_reached ("no memory to queue messages");
5091 case _DBUS_MESSAGE_VALID:
5092 return check_have_valid_message (loader);
5093 case _DBUS_MESSAGE_INVALID:
5094 return check_invalid_message (loader);
5095 case _DBUS_MESSAGE_INCOMPLETE:
5096 return check_incomplete_message (loader);
5097 case _DBUS_MESSAGE_UNKNOWN:
5101 _dbus_assert_not_reached ("bad DBusMessageValidity");
5107 * Loads the message in the given message file.
5109 * @param filename filename to load
5110 * @param is_raw if #TRUE load as binary data, if #FALSE as message builder language
5111 * @param data string to load message into
5112 * @returns #TRUE if the message was loaded
5115 dbus_internal_do_not_use_load_message_file (const DBusString *filename,
5127 _dbus_verbose ("Loading raw %s\n", _dbus_string_get_const_data (filename));
5128 dbus_error_init (&error);
5129 if (!_dbus_file_get_contents (data, filename, &error))
5131 _dbus_warn ("Could not load message file %s: %s\n",
5132 _dbus_string_get_const_data (filename),
5134 dbus_error_free (&error);
5140 if (!_dbus_message_data_load (data, filename))
5142 _dbus_warn ("Could not load message file %s\n",
5143 _dbus_string_get_const_data (filename));
5156 * Tries loading the message in the given message file
5157 * and verifies that DBusMessageLoader can handle it.
5159 * @param filename filename to load
5160 * @param is_raw if #TRUE load as binary data, if #FALSE as message builder language
5161 * @param expected_validity what the message has to be like to return #TRUE
5162 * @returns #TRUE if the message has the expected validity
5165 dbus_internal_do_not_use_try_message_file (const DBusString *filename,
5167 DBusMessageValidity expected_validity)
5174 if (!_dbus_string_init (&data))
5175 _dbus_assert_not_reached ("could not allocate string\n");
5177 if (!dbus_internal_do_not_use_load_message_file (filename, is_raw,
5181 retval = dbus_internal_do_not_use_try_message_data (&data, expected_validity);
5187 if (_dbus_string_get_length (&data) > 0)
5188 _dbus_verbose_bytes_of_string (&data, 0,
5189 _dbus_string_get_length (&data));
5191 _dbus_warn ("Failed message loader test on %s\n",
5192 _dbus_string_get_const_data (filename));
5195 _dbus_string_free (&data);
5201 * Tries loading the given message data.
5204 * @param data the message data
5205 * @param expected_validity what the message has to be like to return #TRUE
5206 * @returns #TRUE if the message has the expected validity
5209 dbus_internal_do_not_use_try_message_data (const DBusString *data,
5210 DBusMessageValidity expected_validity)
5212 DBusMessageLoader *loader;
5220 /* Write the data one byte at a time */
5222 loader = _dbus_message_loader_new ();
5224 len = _dbus_string_get_length (data);
5225 for (i = 0; i < len; i++)
5229 _dbus_message_loader_get_buffer (loader, &buffer);
5230 _dbus_string_append_byte (buffer,
5231 _dbus_string_get_byte (data, i));
5232 _dbus_message_loader_return_buffer (loader, buffer, 1);
5235 if (!check_loader_results (loader, expected_validity))
5238 _dbus_message_loader_unref (loader);
5241 /* Write the data all at once */
5243 loader = _dbus_message_loader_new ();
5248 _dbus_message_loader_get_buffer (loader, &buffer);
5249 _dbus_string_copy (data, 0, buffer,
5250 _dbus_string_get_length (buffer));
5251 _dbus_message_loader_return_buffer (loader, buffer, 1);
5254 if (!check_loader_results (loader, expected_validity))
5257 _dbus_message_loader_unref (loader);
5260 /* Write the data 2 bytes at a time */
5262 loader = _dbus_message_loader_new ();
5264 len = _dbus_string_get_length (data);
5265 for (i = 0; i < len; i += 2)
5269 _dbus_message_loader_get_buffer (loader, &buffer);
5270 _dbus_string_append_byte (buffer,
5271 _dbus_string_get_byte (data, i));
5273 _dbus_string_append_byte (buffer,
5274 _dbus_string_get_byte (data, i+1));
5275 _dbus_message_loader_return_buffer (loader, buffer, 1);
5278 if (!check_loader_results (loader, expected_validity))
5281 _dbus_message_loader_unref (loader);
5289 _dbus_message_loader_unref (loader);
5295 process_test_subdir (const DBusString *test_base_dir,
5297 DBusMessageValidity validity,
5298 DBusForeachMessageFileFunc function,
5301 DBusString test_directory;
5302 DBusString filename;
5310 if (!_dbus_string_init (&test_directory))
5311 _dbus_assert_not_reached ("didn't allocate test_directory\n");
5313 _dbus_string_init_const (&filename, subdir);
5315 if (!_dbus_string_copy (test_base_dir, 0,
5316 &test_directory, 0))
5317 _dbus_assert_not_reached ("couldn't copy test_base_dir to test_directory");
5319 if (!_dbus_concat_dir_and_file (&test_directory, &filename))
5320 _dbus_assert_not_reached ("couldn't allocate full path");
5322 _dbus_string_free (&filename);
5323 if (!_dbus_string_init (&filename))
5324 _dbus_assert_not_reached ("didn't allocate filename string\n");
5326 dbus_error_init (&error);
5327 dir = _dbus_directory_open (&test_directory, &error);
5330 _dbus_warn ("Could not open %s: %s\n",
5331 _dbus_string_get_const_data (&test_directory),
5333 dbus_error_free (&error);
5337 printf ("Testing:\n");
5340 while (_dbus_directory_get_next_file (dir, &filename, &error))
5342 DBusString full_path;
5345 if (!_dbus_string_init (&full_path))
5346 _dbus_assert_not_reached ("couldn't init string");
5348 if (!_dbus_string_copy (&test_directory, 0, &full_path, 0))
5349 _dbus_assert_not_reached ("couldn't copy dir to full_path");
5351 if (!_dbus_concat_dir_and_file (&full_path, &filename))
5352 _dbus_assert_not_reached ("couldn't concat file to dir");
5354 if (_dbus_string_ends_with_c_str (&filename, ".message"))
5356 else if (_dbus_string_ends_with_c_str (&filename, ".message-raw"))
5360 _dbus_verbose ("Skipping non-.message file %s\n",
5361 _dbus_string_get_const_data (&filename));
5362 _dbus_string_free (&full_path);
5367 _dbus_string_get_const_data (&filename));
5369 _dbus_verbose (" expecting %s\n",
5370 validity == _DBUS_MESSAGE_VALID ? "valid" :
5371 (validity == _DBUS_MESSAGE_INVALID ? "invalid" :
5372 (validity == _DBUS_MESSAGE_INCOMPLETE ? "incomplete" : "unknown")));
5374 if (! (*function) (&full_path, is_raw, validity, user_data))
5376 _dbus_string_free (&full_path);
5380 _dbus_string_free (&full_path);
5383 if (dbus_error_is_set (&error))
5385 _dbus_warn ("Could not get next file in %s: %s\n",
5386 _dbus_string_get_const_data (&test_directory),
5388 dbus_error_free (&error);
5397 _dbus_directory_close (dir);
5398 _dbus_string_free (&test_directory);
5399 _dbus_string_free (&filename);
5405 * Runs the given function on every message file in the test suite.
5406 * The function should return #FALSE on test failure or fatal error.
5408 * @param test_data_dir root dir of the test suite data files (top_srcdir/test/data)
5409 * @param func the function to run
5410 * @param user_data data for function
5411 * @returns #FALSE if there's a failure
5414 dbus_internal_do_not_use_foreach_message_file (const char *test_data_dir,
5415 DBusForeachMessageFileFunc func,
5418 DBusString test_directory;
5423 _dbus_string_init_const (&test_directory, test_data_dir);
5425 if (!process_test_subdir (&test_directory, "valid-messages",
5426 _DBUS_MESSAGE_VALID, func, user_data))
5429 if (!process_test_subdir (&test_directory, "invalid-messages",
5430 _DBUS_MESSAGE_INVALID, func, user_data))
5433 if (!process_test_subdir (&test_directory, "incomplete-messages",
5434 _DBUS_MESSAGE_INCOMPLETE, func, user_data))
5441 _dbus_string_free (&test_directory);
5447 verify_test_message (DBusMessage *message)
5449 dbus_int32_t our_int;
5452 dbus_bool_t our_bool;
5453 dbus_int32_t *our_int_array;
5454 dbus_uint32_t our_uint32;
5455 int our_int_array_len;
5456 DBusMessageIter iter, dict;
5458 #ifdef DBUS_HAVE_INT64
5459 dbus_int64_t our_int64;
5462 dbus_message_iter_init (message, &iter);
5464 dbus_error_init (&error);
5465 if (!dbus_message_iter_get_args (&iter, &error,
5466 DBUS_TYPE_INT32, &our_int,
5467 #ifdef DBUS_HAVE_INT64
5468 DBUS_TYPE_INT64, &our_int64,
5470 DBUS_TYPE_STRING, &our_str,
5471 DBUS_TYPE_DOUBLE, &our_double,
5472 DBUS_TYPE_BOOLEAN, &our_bool,
5473 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, &our_int_array, &our_int_array_len,
5476 _dbus_verbose ("error: %s - %s\n", error.name, (error.message != NULL)?error.message: "no message");
5477 _dbus_assert_not_reached ("Could not get arguments");
5480 if (our_int != -0x12345678)
5481 _dbus_assert_not_reached ("integers differ!");
5483 #ifdef DBUS_HAVE_INT64
5484 if (our_int64 != -0x123456789abcd)
5485 _dbus_assert_not_reached ("64-bit integers differ!");
5488 if (our_double != 3.14159)
5489 _dbus_assert_not_reached ("doubles differ!");
5491 if (strcmp (our_str, "Test string") != 0)
5492 _dbus_assert_not_reached ("strings differ!");
5493 dbus_free (our_str);
5496 _dbus_assert_not_reached ("booleans differ");
5498 if (our_int_array_len != 4 ||
5499 our_int_array[0] != 0x12345678 ||
5500 our_int_array[1] != 0x23456781 ||
5501 our_int_array[2] != 0x34567812 ||
5502 our_int_array[3] != 0x45678123)
5503 _dbus_assert_not_reached ("array differ");
5504 dbus_free (our_int_array);
5506 if (!dbus_message_iter_next (&iter))
5507 _dbus_assert_not_reached ("Reached end of arguments");
5509 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DICT)
5510 _dbus_assert_not_reached ("not dict type");
5512 if (!dbus_message_iter_init_dict_iterator (&iter, &dict))
5513 _dbus_assert_not_reached ("dict iter failed");
5515 our_str = dbus_message_iter_get_dict_key (&dict);
5516 if (our_str == NULL || strcmp (our_str, "test") != 0)
5517 _dbus_assert_not_reached ("wrong dict key");
5518 dbus_free (our_str);
5520 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_UINT32)
5522 _dbus_verbose ("dict entry type: %d\n", dbus_message_iter_get_arg_type (&dict));
5523 _dbus_assert_not_reached ("wrong dict entry type");
5526 if ((our_uint32 = dbus_message_iter_get_uint32 (&dict)) != 0xDEADBEEF)
5528 _dbus_verbose ("dict entry val: %x\n", our_uint32);
5529 _dbus_assert_not_reached ("wrong dict entry value");
5532 if (dbus_message_iter_next (&dict))
5533 _dbus_assert_not_reached ("Didn't reach end of dict");
5535 if (!dbus_message_iter_next (&iter))
5536 _dbus_assert_not_reached ("Reached end of arguments");
5538 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_UINT32)
5539 _dbus_assert_not_reached ("wrong type after dict");
5541 if (dbus_message_iter_get_uint32 (&iter) != 0xCAFEBABE)
5542 _dbus_assert_not_reached ("wrong value after dict");
5544 if (dbus_message_iter_next (&iter))
5545 _dbus_assert_not_reached ("Didn't reach end of arguments");
5549 * @ingroup DBusMessageInternals
5550 * Unit test for DBusMessage.
5552 * @returns #TRUE on success.
5555 _dbus_message_test (const char *test_data_dir)
5557 DBusMessage *message;
5558 DBusMessageLoader *loader;
5559 DBusMessageIter iter, child_iter, child_iter2, child_iter3;
5565 const dbus_uint32_t our_int32_array[] = { 0x12345678, 0x23456781, 0x34567812, 0x45678123 };
5567 _dbus_assert (sizeof (DBusMessageRealIter) <= sizeof (DBusMessageIter));
5569 /* Test the vararg functions */
5570 message = dbus_message_new ("test.Message", "org.freedesktop.DBus.Test");
5571 _dbus_message_set_serial (message, 1);
5572 dbus_message_append_args (message,
5573 DBUS_TYPE_INT32, -0x12345678,
5574 #ifdef DBUS_HAVE_INT64
5575 DBUS_TYPE_INT64, -0x123456789abcd,
5577 DBUS_TYPE_STRING, "Test string",
5578 DBUS_TYPE_DOUBLE, 3.14159,
5579 DBUS_TYPE_BOOLEAN, TRUE,
5580 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, our_int32_array, 4,
5583 dbus_message_append_iter_init (message, &iter);
5584 dbus_message_iter_append_dict (&iter, &child_iter);
5585 dbus_message_iter_append_dict_key (&child_iter, "test");
5586 dbus_message_iter_append_uint32 (&child_iter, 0xDEADBEEF);
5587 dbus_message_iter_append_uint32 (&iter, 0xCAFEBABE);
5589 _dbus_verbose_bytes_of_string (&message->header, 0,
5590 _dbus_string_get_length (&message->header));
5591 _dbus_verbose_bytes_of_string (&message->body, 0,
5592 _dbus_string_get_length (&message->body));
5594 verify_test_message (message);
5596 copy = dbus_message_copy (message);
5598 _dbus_assert (message->client_serial == copy->client_serial);
5599 _dbus_assert (message->reply_serial == copy->reply_serial);
5600 _dbus_assert (message->header_padding == copy->header_padding);
5602 _dbus_assert (_dbus_string_get_length (&message->header) ==
5603 _dbus_string_get_length (©->header));
5605 _dbus_assert (_dbus_string_get_length (&message->body) ==
5606 _dbus_string_get_length (©->body));
5608 verify_test_message (copy);
5610 name1 = dbus_message_get_name (message);
5611 name2 = dbus_message_get_name (copy);
5613 _dbus_assert (strcmp (name1, name2) == 0);
5615 dbus_message_unref (message);
5616 dbus_message_unref (copy);
5618 message = dbus_message_new ("test.Message", "org.freedesktop.DBus.Test");
5619 _dbus_message_set_serial (message, 1);
5620 dbus_message_set_reply_serial (message, 0x12345678);
5622 dbus_message_append_iter_init (message, &iter);
5623 dbus_message_iter_append_string (&iter, "Test string");
5624 dbus_message_iter_append_int32 (&iter, -0x12345678);
5625 dbus_message_iter_append_uint32 (&iter, 0xedd1e);
5626 dbus_message_iter_append_double (&iter, 3.14159);
5628 dbus_message_iter_append_array (&iter, &child_iter, DBUS_TYPE_DOUBLE);
5629 dbus_message_iter_append_double (&child_iter, 1.5);
5630 dbus_message_iter_append_double (&child_iter, 2.5);
5633 dbus_message_iter_append_dict (&iter, &child_iter);
5634 dbus_message_iter_append_dict_key (&child_iter, "test");
5635 dbus_message_iter_append_uint32 (&child_iter, 0xDEADBEEF);
5637 /* array of array of int32 (in dict) */
5638 dbus_message_iter_append_dict_key (&child_iter, "array");
5639 dbus_message_iter_append_array (&child_iter, &child_iter2, DBUS_TYPE_ARRAY);
5640 dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_INT32);
5641 dbus_message_iter_append_int32 (&child_iter3, 0x12345678);
5642 dbus_message_iter_append_int32 (&child_iter3, 0x23456781);
5643 _dbus_warn ("next call expected to fail with wrong array type\n");
5644 _dbus_assert (!dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_UINT32));
5645 dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_INT32);
5646 dbus_message_iter_append_int32 (&child_iter3, 0x34567812);
5647 dbus_message_iter_append_int32 (&child_iter3, 0x45678123);
5648 dbus_message_iter_append_int32 (&child_iter3, 0x56781234);
5650 dbus_message_iter_append_byte (&iter, 0xF0);
5652 dbus_message_iter_append_nil (&iter);
5654 dbus_message_iter_append_named (&iter, "named",
5657 message_iter_test (message);
5659 /* Message loader test */
5660 _dbus_message_lock (message);
5661 loader = _dbus_message_loader_new ();
5663 /* Write the header data one byte at a time */
5664 data = _dbus_string_get_const_data (&message->header);
5665 for (i = 0; i < _dbus_string_get_length (&message->header); i++)
5669 _dbus_message_loader_get_buffer (loader, &buffer);
5670 _dbus_string_append_byte (buffer, data[i]);
5671 _dbus_message_loader_return_buffer (loader, buffer, 1);
5674 /* Write the body data one byte at a time */
5675 data = _dbus_string_get_const_data (&message->body);
5676 for (i = 0; i < _dbus_string_get_length (&message->body); i++)
5680 _dbus_message_loader_get_buffer (loader, &buffer);
5681 _dbus_string_append_byte (buffer, data[i]);
5682 _dbus_message_loader_return_buffer (loader, buffer, 1);
5685 dbus_message_unref (message);
5687 /* Now pop back the message */
5688 if (!_dbus_message_loader_queue_messages (loader))
5689 _dbus_assert_not_reached ("no memory to queue messages");
5691 if (_dbus_message_loader_get_is_corrupted (loader))
5692 _dbus_assert_not_reached ("message loader corrupted");
5694 message = _dbus_message_loader_pop_message (loader);
5696 _dbus_assert_not_reached ("received a NULL message");
5698 if (dbus_message_get_reply_serial (message) != 0x12345678)
5699 _dbus_assert_not_reached ("reply serial fields differ");
5701 message_iter_test (message);
5703 dbus_message_unref (message);
5704 _dbus_message_loader_unref (loader);
5706 /* Now load every message in test_data_dir if we have one */
5707 if (test_data_dir == NULL)
5710 return dbus_internal_do_not_use_foreach_message_file (test_data_dir,
5711 (DBusForeachMessageFileFunc)
5712 dbus_internal_do_not_use_try_message_file,
5716 #endif /* DBUS_BUILD_TESTS */