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"
32 #include "dbus-dataslot.h"
36 * @defgroup DBusMessageInternals DBusMessage implementation details
37 * @ingroup DBusInternals
38 * @brief DBusMessage private implementation details.
40 * The guts of DBusMessage and its methods.
58 static dbus_bool_t field_is_named[FIELD_LAST] =
60 FALSE, /* FIELD_HEADER_LENGTH */
61 FALSE, /* FIELD_BODY_LENGTH */
62 FALSE, /* FIELD_CLIENT_SERIAL */
63 TRUE, /* FIELD_NAME */
64 TRUE, /* FIELD_SERVICE */
65 TRUE, /* FIELD_SENDER */
66 TRUE /* FIELD_REPLY_SERIAL */
71 int offset; /**< Offset to start of field (location of name of field
76 #define BYTE_ORDER_OFFSET 0
78 #define FLAGS_OFFSET 2
79 #define VERSION_OFFSET 3
82 * @brief Internals of DBusMessage
84 * Object representing a message received from or to be sent to
85 * another application. This is an opaque object, all members
90 DBusAtomic refcount; /**< Reference count */
92 DBusString header; /**< Header network data, stored
93 * separately from body so we can
94 * independently realloc it.
97 HeaderField header_fields[FIELD_LAST]; /**< Track the location
98 * of each field in "header"
101 dbus_uint32_t client_serial; /**< Cached client serial value for speed */
102 dbus_uint32_t reply_serial; /**< Cached reply serial value for speed */
104 int header_padding; /**< bytes of alignment in header */
106 DBusString body; /**< Body network data. */
108 char byte_order; /**< Message byte order. */
110 DBusList *size_counters; /**< 0-N DBusCounter used to track message size. */
111 long size_counter_delta; /**< Size we incremented the size counters by. */
113 dbus_uint32_t changed_stamp; /**< Incremented when iterators are invalidated. */
115 unsigned int locked : 1; /**< Message being sent, no modifications allowed. */
117 DBusDataSlotList slot_list; /**< Data stored by allocated integer ID */
121 DBUS_MESSAGE_ITER_TYPE_MESSAGE,
122 DBUS_MESSAGE_ITER_TYPE_ARRAY,
123 DBUS_MESSAGE_ITER_TYPE_DICT
126 /** typedef for internals of message iterator */
127 typedef struct DBusMessageRealIter DBusMessageRealIter;
130 * @brief Internals of DBusMessageIter
132 * Object representing a position in a message. All fields are internal.
134 struct DBusMessageRealIter
136 DBusMessageRealIter *parent_iter; /**< parent iter, or NULL */
137 DBusMessage *message; /**< Message used */
138 dbus_uint32_t changed_stamp; /**< stamp to detect invalid iters */
140 /* This is an int instead of an enum to get a guaranteed size for the dummy: */
141 int type; /**< type of iter */
143 int pos; /**< Current position in the string */
144 int end; /**< position right after the container */
145 int container_start; /**< offset of the start of the container */
146 int container_length_pos; /**< offset of the length of the container */
148 int wrote_dict_key; /**< whether we wrote the dict key for the current dict element */
150 int array_type_pos; /**< pointer to the position of the array element type */
151 int array_type_done; /**< TRUE if the array type is fully finished */
155 * Gets the data to be sent over the network for this message.
156 * The header and then the body should be written out.
157 * This function is guaranteed to always return the same
158 * data once a message is locked (with _dbus_message_lock()).
160 * @param message the message.
161 * @param header return location for message header data.
162 * @param body return location for message body data.
165 _dbus_message_get_network_data (DBusMessage *message,
166 const DBusString **header,
167 const DBusString **body)
169 _dbus_assert (message->locked);
171 *header = &message->header;
172 *body = &message->body;
176 clear_header_padding (DBusMessage *message)
178 _dbus_string_shorten (&message->header,
179 message->header_padding);
180 message->header_padding = 0;
184 append_header_padding (DBusMessage *message)
187 old_len = _dbus_string_get_length (&message->header);
188 if (!_dbus_string_align_length (&message->header, 8))
191 message->header_padding = _dbus_string_get_length (&message->header) - old_len;
197 adjust_field_offsets (DBusMessage *message,
207 while (i < FIELD_LAST)
209 if (message->header_fields[i].offset > offsets_after)
210 message->header_fields[i].offset += delta;
216 #ifdef DBUS_BUILD_TESTS
217 /* tests-only until it's actually used */
219 get_int_field (DBusMessage *message,
224 _dbus_assert (field < FIELD_LAST);
226 offset = message->header_fields[field].offset;
229 return -1; /* useless if -1 is a valid value of course */
231 return _dbus_demarshal_int32 (&message->header,
239 get_uint_field (DBusMessage *message,
244 _dbus_assert (field < FIELD_LAST);
246 offset = message->header_fields[field].offset;
249 return -1; /* useless if -1 is a valid value of course */
251 return _dbus_demarshal_uint32 (&message->header,
258 get_string_field (DBusMessage *message,
265 offset = message->header_fields[field].offset;
267 _dbus_assert (field < FIELD_LAST);
272 /* offset points to string length, string data follows it */
273 /* FIXME _dbus_demarshal_const_string() that returned
274 * a reference to the string plus its len might be nice.
278 *len = _dbus_demarshal_uint32 (&message->header,
283 data = _dbus_string_get_const_data (&message->header);
285 return data + (offset + 4);
288 #ifdef DBUS_BUILD_TESTS
290 append_int_field (DBusMessage *message,
297 _dbus_assert (!message->locked);
299 clear_header_padding (message);
301 orig_len = _dbus_string_get_length (&message->header);
303 if (!_dbus_string_align_length (&message->header, 4))
306 if (!_dbus_string_append_len (&message->header, name, 4))
309 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_INT32))
312 if (!_dbus_string_align_length (&message->header, 4))
315 message->header_fields[field].offset =
316 _dbus_string_get_length (&message->header);
318 if (!_dbus_marshal_int32 (&message->header, message->byte_order,
322 if (!append_header_padding (message))
328 message->header_fields[field].offset = -1;
329 _dbus_string_set_length (&message->header, orig_len);
331 /* this must succeed because it was allocated on function entry and
332 * DBusString doesn't ever realloc smaller
334 if (!append_header_padding (message))
335 _dbus_assert_not_reached ("failed to reappend header padding");
341 append_uint_field (DBusMessage *message,
348 _dbus_assert (!message->locked);
350 clear_header_padding (message);
352 orig_len = _dbus_string_get_length (&message->header);
354 if (!_dbus_string_align_length (&message->header, 4))
357 if (!_dbus_string_append_len (&message->header, name, 4))
360 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_UINT32))
363 if (!_dbus_string_align_length (&message->header, 4))
366 message->header_fields[field].offset =
367 _dbus_string_get_length (&message->header);
369 if (!_dbus_marshal_uint32 (&message->header, message->byte_order,
373 if (!append_header_padding (message))
379 message->header_fields[field].offset = -1;
380 _dbus_string_set_length (&message->header, orig_len);
382 /* this must succeed because it was allocated on function entry and
383 * DBusString doesn't ever realloc smaller
385 if (!append_header_padding (message))
386 _dbus_assert_not_reached ("failed to reappend header padding");
391 append_string_field (DBusMessage *message,
398 _dbus_assert (!message->locked);
400 clear_header_padding (message);
402 orig_len = _dbus_string_get_length (&message->header);
404 if (!_dbus_string_align_length (&message->header, 4))
407 if (!_dbus_string_append_len (&message->header, name, 4))
410 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_STRING))
413 if (!_dbus_string_align_length (&message->header, 4))
416 message->header_fields[field].offset =
417 _dbus_string_get_length (&message->header);
419 if (!_dbus_marshal_string (&message->header, message->byte_order,
423 if (!append_header_padding (message))
429 message->header_fields[field].offset = -1;
430 _dbus_string_set_length (&message->header, orig_len);
432 /* this must succeed because it was allocated on function entry and
433 * DBusString doesn't ever realloc smaller
435 if (!append_header_padding (message))
436 _dbus_assert_not_reached ("failed to reappend header padding");
441 #ifdef DBUS_BUILD_TESTS
442 /* This isn't used, but building it when tests are enabled just to
443 * keep it compiling if we need it in future
446 delete_int_or_uint_field (DBusMessage *message,
449 int offset = message->header_fields[field].offset;
451 _dbus_assert (!message->locked);
452 _dbus_assert (field_is_named[field]);
457 clear_header_padding (message);
459 /* The field typecode and name take up 8 bytes */
460 _dbus_string_delete (&message->header,
464 message->header_fields[field].offset = -1;
466 adjust_field_offsets (message,
470 append_header_padding (message);
475 delete_string_field (DBusMessage *message,
478 int offset = message->header_fields[field].offset;
482 _dbus_assert (!message->locked);
483 _dbus_assert (field_is_named[field]);
488 clear_header_padding (message);
490 get_string_field (message, field, &len);
492 /* The field typecode and name take up 8 bytes, and the nul
493 * termination is 1 bytes, string length integer is 4 bytes
495 delete_len = 8 + 4 + 1 + len;
497 _dbus_string_delete (&message->header,
501 message->header_fields[field].offset = -1;
503 adjust_field_offsets (message,
507 append_header_padding (message);
510 #ifdef DBUS_BUILD_TESTS
512 set_int_field (DBusMessage *message,
516 int offset = message->header_fields[field].offset;
518 _dbus_assert (!message->locked);
522 /* need to append the field */
527 _dbus_assert_not_reached ("appending an int field we don't support appending");
533 _dbus_marshal_set_int32 (&message->header,
543 set_uint_field (DBusMessage *message,
547 int offset = message->header_fields[field].offset;
549 _dbus_assert (!message->locked);
553 /* need to append the field */
557 case FIELD_REPLY_SERIAL:
558 return append_uint_field (message, field,
559 DBUS_HEADER_FIELD_REPLY,
562 _dbus_assert_not_reached ("appending a uint field we don't support appending");
568 _dbus_marshal_set_uint32 (&message->header,
577 set_string_field (DBusMessage *message,
581 int offset = message->header_fields[field].offset;
583 _dbus_assert (!message->locked);
584 _dbus_assert (value != NULL);
588 /* need to append the field */
593 return append_string_field (message, field,
594 DBUS_HEADER_FIELD_SENDER,
597 return append_string_field (message, field,
598 DBUS_HEADER_FIELD_NAME,
601 return append_string_field (message, field,
602 DBUS_HEADER_FIELD_SERVICE,
605 _dbus_assert_not_reached ("appending a string field we don't support appending");
616 clear_header_padding (message);
618 old_len = _dbus_string_get_length (&message->header);
620 len = strlen (value);
622 _dbus_string_init_const_len (&v, value,
623 len + 1); /* include nul */
624 if (!_dbus_marshal_set_string (&message->header,
630 new_len = _dbus_string_get_length (&message->header);
632 adjust_field_offsets (message,
636 if (!append_header_padding (message))
642 /* this must succeed because it was allocated on function entry and
643 * DBusString doesn't ever realloc smaller
645 if (!append_header_padding (message))
646 _dbus_assert_not_reached ("failed to reappend header padding");
653 * Sets the serial number of a message.
654 * This can only be done once on a message.
656 * @param message the message
657 * @param serial the serial
660 _dbus_message_set_serial (DBusMessage *message,
663 _dbus_assert (!message->locked);
664 _dbus_assert (dbus_message_get_serial (message) == 0);
666 set_uint_field (message, FIELD_CLIENT_SERIAL,
668 message->client_serial = serial;
672 * Sets the reply serial of a message (the client serial
673 * of the message this is a reply to).
675 * @param message the message
676 * @param reply_serial the client serial
677 * @returns #FALSE if not enough memory
680 dbus_message_set_reply_serial (DBusMessage *message,
681 dbus_uint32_t reply_serial)
683 _dbus_assert (!message->locked);
685 if (set_uint_field (message, FIELD_REPLY_SERIAL,
688 message->reply_serial = reply_serial;
696 * Returns the serial of a message or -1 if none has been specified.
697 * The message's serial number is provided by the application sending
698 * the message and is used to identify replies to this message.
700 * @param message the message
701 * @returns the client serial
704 dbus_message_get_serial (DBusMessage *message)
706 return message->client_serial;
710 * Returns the serial that the message is
711 * a reply to or 0 if none.
713 * @param message the message
714 * @returns the reply serial
717 dbus_message_get_reply_serial (DBusMessage *message)
719 return message->reply_serial;
723 * Adds a counter to be incremented immediately with the
724 * size of this message, and decremented by the size
725 * of this message when this message if finalized.
726 * The link contains a counter with its refcount already
727 * incremented, but the counter itself not incremented.
728 * Ownership of link and counter refcount is passed to
731 * @param message the message
732 * @param link link with counter as data
735 _dbus_message_add_size_counter_link (DBusMessage *message,
738 /* right now we don't recompute the delta when message
739 * size changes, and that's OK for current purposes
740 * I think, but could be important to change later.
741 * Do recompute it whenever there are no outstanding counters,
742 * since it's basically free.
744 if (message->size_counters == NULL)
746 message->size_counter_delta =
747 _dbus_string_get_length (&message->header) +
748 _dbus_string_get_length (&message->body);
751 _dbus_verbose ("message has size %ld\n",
752 message->size_counter_delta);
756 _dbus_list_append_link (&message->size_counters, link);
758 _dbus_counter_adjust (link->data, message->size_counter_delta);
762 * Adds a counter to be incremented immediately with the
763 * size of this message, and decremented by the size
764 * of this message when this message if finalized.
766 * @param message the message
767 * @param counter the counter
768 * @returns #FALSE if no memory
771 _dbus_message_add_size_counter (DBusMessage *message,
772 DBusCounter *counter)
776 link = _dbus_list_alloc_link (counter);
780 _dbus_counter_ref (counter);
781 _dbus_message_add_size_counter_link (message, link);
787 * Removes a counter tracking the size of this message, and decrements
788 * the counter by the size of this message.
790 * @param message the message
791 * @param link_return return the link used
792 * @param counter the counter
795 _dbus_message_remove_size_counter (DBusMessage *message,
796 DBusCounter *counter,
797 DBusList **link_return)
801 link = _dbus_list_find_last (&message->size_counters,
803 _dbus_assert (link != NULL);
805 _dbus_list_unlink (&message->size_counters,
810 _dbus_list_free_link (link);
812 _dbus_counter_adjust (counter, message->size_counter_delta);
814 _dbus_counter_unref (counter);
818 dbus_message_create_header (DBusMessage *message,
825 if (!_dbus_string_append_byte (&message->header, message->byte_order))
828 if (!_dbus_string_append_byte (&message->header, type))
832 if (!_dbus_string_append_byte (&message->header, flags))
835 if (!_dbus_string_append_byte (&message->header, DBUS_MAJOR_PROTOCOL_VERSION))
838 message->header_fields[FIELD_HEADER_LENGTH].offset = 4;
839 if (!_dbus_marshal_uint32 (&message->header, message->byte_order, 0))
842 message->header_fields[FIELD_BODY_LENGTH].offset = 8;
843 if (!_dbus_marshal_uint32 (&message->header, message->byte_order, 0))
846 message->header_fields[FIELD_CLIENT_SERIAL].offset = 12;
847 if (!_dbus_marshal_int32 (&message->header, message->byte_order, -1))
850 /* Marshal message service */
853 if (!append_string_field (message,
855 DBUS_HEADER_FIELD_SERVICE,
862 if (!append_string_field (message,
864 DBUS_HEADER_FIELD_NAME,
873 * Locks a message. Allows checking that applications don't keep a
874 * reference to a message in the outgoing queue and change it
875 * underneath us. Messages are locked when they enter the outgoing
876 * queue (dbus_connection_send_message()), and the library complains
877 * if the message is modified while locked.
879 * @param message the message to lock.
882 _dbus_message_lock (DBusMessage *message)
884 if (!message->locked)
886 /* Fill in our lengths */
887 set_uint_field (message,
889 _dbus_string_get_length (&message->header));
891 set_uint_field (message,
893 _dbus_string_get_length (&message->body));
895 message->locked = TRUE;
902 * @defgroup DBusMessage DBusMessage
904 * @brief Message to be sent or received over a DBusConnection.
906 * A DBusMessage is the most basic unit of communication over a
907 * DBusConnection. A DBusConnection represents a stream of messages
908 * received from a remote application, and a stream of messages
909 * sent to a remote application.
915 * @typedef DBusMessage
917 * Opaque data type representing a message received from or to be
918 * sent to another application.
922 dbus_message_new_empty_header (void)
924 DBusMessage *message;
927 message = dbus_new0 (DBusMessage, 1);
931 message->refcount.value = 1;
932 message->byte_order = DBUS_COMPILER_BYTE_ORDER;
933 message->client_serial = 0;
934 message->reply_serial = 0;
936 _dbus_data_slot_list_init (&message->slot_list);
939 while (i < FIELD_LAST)
941 message->header_fields[i].offset = -1;
945 if (!_dbus_string_init_preallocated (&message->header, 64))
951 if (!_dbus_string_init_preallocated (&message->body, 64))
953 _dbus_string_free (&message->header);
962 * Constructs a new message of the given message type.
963 * Types include #DBUS_MESSAGE_TYPE_METHOD_CALL,
964 * #DBUS_MESSAGE_TYPE_SIGNAL, and so forth.
966 * @param message_type type of message
967 * @returns new message or #NULL If no memory
970 dbus_message_new (int message_type)
972 DBusMessage *message;
974 _dbus_return_val_if_fail (message_type != DBUS_MESSAGE_TYPE_INVALID, NULL);
976 message = dbus_message_new_empty_header ();
980 if (!dbus_message_create_header (message,
984 dbus_message_unref (message);
992 * Constructs a new message to invoke a method on a remote
993 * object. Returns #NULL if memory can't be allocated for the
994 * message. The service may be #NULL in which case no service is set;
995 * this is appropriate when using D-BUS in a peer-to-peer context (no
998 * @param name name of the message
999 * @param destination_service service that the message should be sent to or #NULL
1000 * @returns a new DBusMessage, free with dbus_message_unref()
1001 * @see dbus_message_unref()
1004 dbus_message_new_method_call (const char *name,
1005 const char *destination_service)
1007 DBusMessage *message;
1009 _dbus_return_val_if_fail (name != NULL, NULL);
1011 message = dbus_message_new_empty_header ();
1012 if (message == NULL)
1015 if (!dbus_message_create_header (message,
1016 DBUS_MESSAGE_TYPE_METHOD_CALL,
1017 name, destination_service))
1019 dbus_message_unref (message);
1027 * Constructs a message that is a reply to a method call. Returns
1028 * #NULL if memory can't be allocated for the message.
1030 * @param method_call the message which the created
1031 * message is a reply to.
1032 * @returns a new DBusMessage, free with dbus_message_unref()
1033 * @see dbus_message_new_method_call(), dbus_message_unref()
1036 dbus_message_new_method_return (DBusMessage *method_call)
1038 DBusMessage *message;
1039 const char *sender, *name;
1041 _dbus_return_val_if_fail (method_call != NULL, NULL);
1043 sender = get_string_field (method_call,
1044 FIELD_SENDER, NULL);
1045 name = get_string_field (method_call,
1048 /* sender is allowed to be null here in peer-to-peer case */
1050 message = dbus_message_new_empty_header ();
1051 if (message == NULL)
1054 if (!dbus_message_create_header (message,
1055 DBUS_MESSAGE_TYPE_METHOD_RETURN,
1058 dbus_message_unref (message);
1062 if (!dbus_message_set_reply_serial (message,
1063 dbus_message_get_serial (method_call)))
1065 dbus_message_unref (message);
1073 * Constructs a new message representing a signal emission. Returns
1074 * #NULL if memory can't be allocated for the message. The name
1075 * passed in is the name of the signal.
1077 * @param name name of the signal
1078 * @returns a new DBusMessage, free with dbus_message_unref()
1079 * @see dbus_message_unref()
1082 dbus_message_new_signal (const char *name)
1084 DBusMessage *message;
1086 _dbus_return_val_if_fail (name != NULL, NULL);
1088 message = dbus_message_new_empty_header ();
1089 if (message == NULL)
1092 if (!dbus_message_create_header (message,
1093 DBUS_MESSAGE_TYPE_SIGNAL,
1096 dbus_message_unref (message);
1104 * Creates a new message that is an error reply to a certain message.
1105 * Error replies are possible in response to method calls primarily.
1107 * @param reply_to the original message
1108 * @param error_name the error name
1109 * @param error_message the error message string or #NULL for none
1110 * @returns a new error message
1113 dbus_message_new_error (DBusMessage *reply_to,
1114 const char *error_name,
1115 const char *error_message)
1117 DBusMessage *message;
1119 DBusMessageIter iter;
1121 _dbus_return_val_if_fail (reply_to != NULL, NULL);
1122 _dbus_return_val_if_fail (error_name != NULL, NULL);
1124 sender = get_string_field (reply_to,
1125 FIELD_SENDER, NULL);
1127 /* sender may be NULL for non-message-bus case or
1128 * when the message bus is dealing with an unregistered
1131 message = dbus_message_new_empty_header ();
1132 if (message == NULL)
1135 if (!dbus_message_create_header (message,
1136 DBUS_MESSAGE_TYPE_ERROR,
1137 error_name, sender))
1139 dbus_message_unref (message);
1143 if (!dbus_message_set_reply_serial (message,
1144 dbus_message_get_serial (reply_to)))
1146 dbus_message_unref (message);
1150 if (error_message != NULL)
1152 dbus_message_append_iter_init (message, &iter);
1153 if (!dbus_message_iter_append_string (&iter, error_message))
1155 dbus_message_unref (message);
1164 * Creates a new message that is an exact replica of the message
1165 * specified, except that its refcount is set to 1.
1167 * @param message the message.
1168 * @returns the new message.
1171 dbus_message_copy (const DBusMessage *message)
1173 DBusMessage *retval;
1176 _dbus_return_val_if_fail (message != NULL, NULL);
1178 retval = dbus_new0 (DBusMessage, 1);
1182 retval->refcount.value = 1;
1183 retval->byte_order = message->byte_order;
1184 retval->client_serial = message->client_serial;
1185 retval->reply_serial = message->reply_serial;
1186 retval->header_padding = message->header_padding;
1187 retval->locked = FALSE;
1189 if (!_dbus_string_init (&retval->header))
1195 if (!_dbus_string_init (&retval->body))
1197 _dbus_string_free (&retval->header);
1202 if (!_dbus_string_copy (&message->header, 0,
1203 &retval->header, 0))
1205 _dbus_string_free (&retval->header);
1206 _dbus_string_free (&retval->body);
1212 if (!_dbus_string_copy (&message->body, 0,
1215 _dbus_string_free (&retval->header);
1216 _dbus_string_free (&retval->body);
1222 for (i = 0; i < FIELD_LAST; i++)
1224 retval->header_fields[i].offset = message->header_fields[i].offset;
1232 * Increments the reference count of a DBusMessage.
1234 * @param message The message
1235 * @see dbus_message_unref
1238 dbus_message_ref (DBusMessage *message)
1240 dbus_int32_t old_refcount;
1242 _dbus_return_if_fail (message != NULL);
1244 old_refcount = _dbus_atomic_inc (&message->refcount);
1245 _dbus_assert (old_refcount >= 1);
1249 free_size_counter (void *element,
1252 DBusCounter *counter = element;
1253 DBusMessage *message = data;
1255 _dbus_counter_adjust (counter, - message->size_counter_delta);
1257 _dbus_counter_unref (counter);
1261 * Decrements the reference count of a DBusMessage.
1263 * @param message The message
1264 * @see dbus_message_ref
1267 dbus_message_unref (DBusMessage *message)
1269 dbus_int32_t old_refcount;
1271 _dbus_return_if_fail (message != NULL);
1273 old_refcount = _dbus_atomic_dec (&message->refcount);
1275 _dbus_assert (old_refcount >= 0);
1277 if (old_refcount == 1)
1279 /* This calls application callbacks! */
1280 _dbus_data_slot_list_free (&message->slot_list);
1282 _dbus_list_foreach (&message->size_counters,
1283 free_size_counter, message);
1284 _dbus_list_clear (&message->size_counters);
1286 _dbus_string_free (&message->header);
1287 _dbus_string_free (&message->body);
1289 dbus_free (message);
1294 * Gets the type of a message. Types include
1295 * DBUS_MESSAGE_TYPE_METHOD_CALL, DBUS_MESSAGE_TYPE_METHOD_RETURN,
1296 * DBUS_MESSAGE_TYPE_ERROR, DBUS_MESSAGE_TYPE_SIGNAL, but other types
1297 * are allowed and all code must silently ignore messages of unknown
1298 * type. DBUS_MESSAGE_TYPE_INVALID will never be returned, however.
1301 * @param message the message
1302 * @returns the type of the message
1305 dbus_message_get_type (DBusMessage *message)
1309 type = _dbus_string_get_byte (&message->header, 1);
1310 _dbus_assert (type != DBUS_MESSAGE_TYPE_INVALID);
1317 * Sets the message name.
1319 * @param message the message
1320 * @param name the name
1321 * @returns #FALSE if not enough memory
1324 dbus_message_set_name (DBusMessage *message,
1327 _dbus_return_val_if_fail (message != NULL, FALSE);
1328 _dbus_return_val_if_fail (!message->locked, FALSE);
1332 delete_string_field (message, FIELD_NAME);
1337 return set_string_field (message,
1344 * Gets the name of a message.
1346 * @param message the message
1347 * @returns the message name (should not be freed)
1350 dbus_message_get_name (DBusMessage *message)
1352 _dbus_return_val_if_fail (message != NULL, NULL);
1354 return get_string_field (message, FIELD_NAME, NULL);
1358 * Sets the message's destination service.
1360 * @param message the message
1361 * @param destination the destination service name
1362 * @returns #FALSE if not enough memory
1365 dbus_message_set_destination (DBusMessage *message,
1366 const char *destination)
1368 _dbus_return_val_if_fail (message != NULL, FALSE);
1369 _dbus_return_val_if_fail (!message->locked, FALSE);
1371 if (destination == NULL)
1373 delete_string_field (message, FIELD_SERVICE);
1378 return set_string_field (message,
1385 * Gets the destination service of a message.
1387 * @param message the message
1388 * @returns the message destination service (should not be freed)
1391 dbus_message_get_destination (DBusMessage *message)
1393 _dbus_return_val_if_fail (message != NULL, NULL);
1395 return get_string_field (message, FIELD_SERVICE, NULL);
1399 * Appends fields to a message given a variable argument list. The
1400 * variable argument list should contain the type of the argument
1401 * followed by the value to add. Array values are specified by an int
1402 * typecode followed by a pointer to the array followed by an int
1403 * giving the length of the array. The argument list must be
1404 * terminated with #DBUS_TYPE_INVALID.
1406 * This function doesn't support dicts or non-fundamental arrays.
1408 * This function supports #DBUS_TYPE_INT64 and #DBUS_TYPE_UINT64
1409 * only if #DBUS_HAVE_INT64 is defined.
1411 * @param message the message
1412 * @param first_arg_type type of the first argument
1413 * @param ... value of first argument, list of additional type-value pairs
1414 * @returns #TRUE on success
1417 dbus_message_append_args (DBusMessage *message,
1424 _dbus_return_val_if_fail (message != NULL, FALSE);
1426 va_start (var_args, first_arg_type);
1427 retval = dbus_message_append_args_valist (message,
1436 * This function takes a va_list for use by language bindings.
1437 * It's otherwise the same as dbus_message_append_args().
1439 * @todo: Shouldn't this function clean up the changes to the message
1440 * on failures? (Yes)
1442 * @see dbus_message_append_args.
1443 * @param message the message
1444 * @param first_arg_type type of first argument
1445 * @param var_args value of first argument, then list of type/value pairs
1446 * @returns #TRUE on success
1449 dbus_message_append_args_valist (DBusMessage *message,
1454 DBusMessageIter iter;
1456 _dbus_return_val_if_fail (message != NULL, FALSE);
1458 old_len = _dbus_string_get_length (&message->body);
1460 type = first_arg_type;
1462 dbus_message_append_iter_init (message, &iter);
1469 if (!dbus_message_iter_append_nil (&iter))
1472 case DBUS_TYPE_BOOLEAN:
1473 if (!dbus_message_iter_append_boolean (&iter, va_arg (var_args, dbus_bool_t)))
1476 case DBUS_TYPE_INT32:
1477 if (!dbus_message_iter_append_int32 (&iter, va_arg (var_args, dbus_int32_t)))
1480 case DBUS_TYPE_UINT32:
1481 if (!dbus_message_iter_append_uint32 (&iter, va_arg (var_args, dbus_uint32_t)))
1484 #ifdef DBUS_HAVE_INT64
1485 case DBUS_TYPE_INT64:
1486 if (!dbus_message_iter_append_int64 (&iter, va_arg (var_args, dbus_int64_t)))
1489 case DBUS_TYPE_UINT64:
1490 if (!dbus_message_iter_append_uint64 (&iter, va_arg (var_args, dbus_uint64_t)))
1493 #endif /* DBUS_HAVE_INT64 */
1494 case DBUS_TYPE_DOUBLE:
1495 if (!dbus_message_iter_append_double (&iter, va_arg (var_args, double)))
1498 case DBUS_TYPE_STRING:
1499 if (!dbus_message_iter_append_string (&iter, va_arg (var_args, const char *)))
1502 case DBUS_TYPE_NAMED:
1505 unsigned char *data;
1508 name = va_arg (var_args, const char *);
1509 data = va_arg (var_args, unsigned char *);
1510 len = va_arg (var_args, int);
1512 if (!dbus_message_iter_append_named (&iter, name, data, len))
1516 case DBUS_TYPE_ARRAY:
1521 type = va_arg (var_args, int);
1522 data = va_arg (var_args, void *);
1523 len = va_arg (var_args, int);
1527 case DBUS_TYPE_BYTE:
1528 if (!dbus_message_iter_append_byte_array (&iter, (unsigned char *)data, len))
1531 case DBUS_TYPE_BOOLEAN:
1532 if (!dbus_message_iter_append_boolean_array (&iter, (unsigned char *)data, len))
1535 case DBUS_TYPE_INT32:
1536 if (!dbus_message_iter_append_int32_array (&iter, (dbus_int32_t *)data, len))
1539 case DBUS_TYPE_UINT32:
1540 if (!dbus_message_iter_append_uint32_array (&iter, (dbus_uint32_t *)data, len))
1543 #ifdef DBUS_HAVE_INT64
1544 case DBUS_TYPE_INT64:
1545 if (!dbus_message_iter_append_int64_array (&iter, (dbus_int64_t *)data, len))
1548 case DBUS_TYPE_UINT64:
1549 if (!dbus_message_iter_append_uint64_array (&iter, (dbus_uint64_t *)data, len))
1552 #endif /* DBUS_HAVE_INT64 */
1553 case DBUS_TYPE_DOUBLE:
1554 if (!dbus_message_iter_append_double_array (&iter, (double *)data, len))
1557 case DBUS_TYPE_STRING:
1558 if (!dbus_message_iter_append_string_array (&iter, (const char **)data, len))
1562 case DBUS_TYPE_ARRAY:
1563 case DBUS_TYPE_NAMED:
1564 case DBUS_TYPE_DICT:
1565 _dbus_warn ("dbus_message_append_args_valist doesn't support recursive arrays\n");
1568 _dbus_warn ("Unknown field type %d\n", type);
1574 case DBUS_TYPE_DICT:
1575 _dbus_warn ("dbus_message_append_args_valist doesn't support dicts\n");
1578 _dbus_warn ("Unknown field type %d\n", type);
1582 type = va_arg (var_args, int);
1593 * Gets arguments from a message given a variable argument list.
1594 * The variable argument list should contain the type of the
1595 * argumen followed by a pointer to where the value should be
1596 * stored. The list is terminated with #DBUS_TYPE_INVALID.
1598 * @param message the message
1599 * @param error error to be filled in on failure
1600 * @param first_arg_type the first argument type
1601 * @param ... location for first argument value, then list of type-location pairs
1602 * @returns #FALSE if the error was set
1605 dbus_message_get_args (DBusMessage *message,
1613 _dbus_return_val_if_fail (message != NULL, FALSE);
1614 _dbus_return_val_if_error_is_set (error, FALSE);
1616 va_start (var_args, first_arg_type);
1617 retval = dbus_message_get_args_valist (message, error, first_arg_type, var_args);
1624 * This function takes a va_list for use by language bindings
1626 * @todo We need to free the argument data when an error occurs.
1628 * @see dbus_message_get_args
1629 * @param message the message
1630 * @param error error to be filled in
1631 * @param first_arg_type type of the first argument
1632 * @param var_args return location for first argument, followed by list of type/location pairs
1633 * @returns #FALSE if error was set
1636 dbus_message_get_args_valist (DBusMessage *message,
1641 DBusMessageIter iter;
1643 _dbus_return_val_if_fail (message != NULL, FALSE);
1644 _dbus_return_val_if_error_is_set (error, FALSE);
1646 dbus_message_iter_init (message, &iter);
1647 return dbus_message_iter_get_args_valist (&iter, error, first_arg_type, var_args);
1651 * Gets arguments from a message iterator given a variable argument list.
1652 * The variable argument list should contain the type of the
1653 * argumen followed by a pointer to where the value should be
1654 * stored. The list is terminated with 0.
1656 * @param iter the message iterator
1657 * @param error error to be filled in on failure
1658 * @param first_arg_type the first argument type
1659 * @param ... location for first argument value, then list of type-location pairs
1660 * @returns #FALSE if the error was set
1663 dbus_message_iter_get_args (DBusMessageIter *iter,
1671 _dbus_return_val_if_fail (iter != NULL, FALSE);
1672 _dbus_return_val_if_error_is_set (error, FALSE);
1674 va_start (var_args, first_arg_type);
1675 retval = dbus_message_iter_get_args_valist (iter, error, first_arg_type, var_args);
1682 * This function takes a va_list for use by language bindings
1684 * This function supports #DBUS_TYPE_INT64 and #DBUS_TYPE_UINT64
1685 * only if #DBUS_HAVE_INT64 is defined.
1687 * @todo this function (or some lower-level non-convenience function)
1688 * needs better error handling; should allow the application to
1689 * distinguish between out of memory, and bad data from the remote
1690 * app. It also needs to not leak a bunch of args when it gets
1691 * to the arg that's bad, as that would be a security hole
1692 * (allow one app to force another to leak memory)
1694 * @todo We need to free the argument data when an error occurs.
1696 * @see dbus_message_get_args
1697 * @param iter the message iter
1698 * @param error error to be filled in
1699 * @param first_arg_type type of the first argument
1700 * @param var_args return location for first argument, followed by list of type/location pairs
1701 * @returns #FALSE if error was set
1704 dbus_message_iter_get_args_valist (DBusMessageIter *iter,
1709 int spec_type, msg_type, i;
1712 _dbus_return_val_if_fail (iter != NULL, FALSE);
1713 _dbus_return_val_if_error_is_set (error, FALSE);
1717 spec_type = first_arg_type;
1720 while (spec_type != 0)
1722 msg_type = dbus_message_iter_get_arg_type (iter);
1724 if (msg_type != spec_type)
1726 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1727 "Argument %d is specified to be of type \"%s\", but "
1728 "is actually of type \"%s\"\n", i,
1729 _dbus_type_to_string (spec_type),
1730 _dbus_type_to_string (msg_type));
1739 case DBUS_TYPE_BYTE:
1743 ptr = va_arg (var_args, unsigned char *);
1745 *ptr = dbus_message_iter_get_byte (iter);
1748 case DBUS_TYPE_BOOLEAN:
1752 ptr = va_arg (var_args, dbus_bool_t *);
1754 *ptr = dbus_message_iter_get_boolean (iter);
1757 case DBUS_TYPE_INT32:
1761 ptr = va_arg (var_args, dbus_int32_t *);
1763 *ptr = dbus_message_iter_get_int32 (iter);
1766 case DBUS_TYPE_UINT32:
1770 ptr = va_arg (var_args, dbus_uint32_t *);
1772 *ptr = dbus_message_iter_get_uint32 (iter);
1775 #ifdef DBUS_HAVE_INT64
1776 case DBUS_TYPE_INT64:
1780 ptr = va_arg (var_args, dbus_int64_t *);
1782 *ptr = dbus_message_iter_get_int64 (iter);
1785 case DBUS_TYPE_UINT64:
1789 ptr = va_arg (var_args, dbus_uint64_t *);
1791 *ptr = dbus_message_iter_get_uint64 (iter);
1794 #endif /* DBUS_HAVE_INT64 */
1796 case DBUS_TYPE_DOUBLE:
1800 ptr = va_arg (var_args, double *);
1802 *ptr = dbus_message_iter_get_double (iter);
1806 case DBUS_TYPE_STRING:
1810 ptr = va_arg (var_args, char **);
1812 *ptr = dbus_message_iter_get_string (iter);
1816 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1823 case DBUS_TYPE_NAMED:
1826 unsigned char **data;
1829 name = va_arg (var_args, char **);
1830 data = va_arg (var_args, unsigned char **);
1831 len = va_arg (var_args, int *);
1833 if (!dbus_message_iter_get_named (iter, name, data, len))
1835 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1840 case DBUS_TYPE_ARRAY:
1845 type = va_arg (var_args, int);
1846 data = va_arg (var_args, void *);
1847 len = va_arg (var_args, int *);
1849 if (dbus_message_iter_get_array_type (iter) != type)
1851 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1852 "Argument %d is specified to be of type \"array of %s\", but "
1853 "is actually of type \"array of %s\"\n", i,
1854 _dbus_type_to_string (type),
1855 _dbus_type_to_string (dbus_message_iter_get_array_type (iter)));
1861 case DBUS_TYPE_BYTE:
1862 if (!dbus_message_iter_get_byte_array (iter, (unsigned char **)data, len))
1864 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1868 case DBUS_TYPE_BOOLEAN:
1869 if (!dbus_message_iter_get_boolean_array (iter, (unsigned char **)data, len))
1871 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1875 case DBUS_TYPE_INT32:
1876 if (!dbus_message_iter_get_int32_array (iter, (dbus_int32_t **)data, len))
1878 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1882 case DBUS_TYPE_UINT32:
1883 if (!dbus_message_iter_get_uint32_array (iter, (dbus_uint32_t **)data, len))
1885 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1889 #ifdef DBUS_HAVE_INT64
1890 case DBUS_TYPE_INT64:
1891 if (!dbus_message_iter_get_int64_array (iter, (dbus_int64_t **)data, len))
1893 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1897 case DBUS_TYPE_UINT64:
1898 if (!dbus_message_iter_get_uint64_array (iter, (dbus_uint64_t **)data, len))
1900 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1904 #endif /* DBUS_HAVE_INT64 */
1905 case DBUS_TYPE_DOUBLE:
1906 if (!dbus_message_iter_get_double_array (iter, (double **)data, len))
1908 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1912 case DBUS_TYPE_STRING:
1913 if (!dbus_message_iter_get_string_array (iter, (char ***)data, len))
1915 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1920 case DBUS_TYPE_ARRAY:
1921 case DBUS_TYPE_NAMED:
1922 case DBUS_TYPE_DICT:
1923 _dbus_warn ("dbus_message_get_args_valist doesn't support recursive arrays\n");
1924 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1927 _dbus_warn ("Unknown field type %d\n", type);
1928 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1933 case DBUS_TYPE_DICT:
1934 _dbus_warn ("dbus_message_get_args_valist doesn't support dicts\n");
1935 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1938 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1939 _dbus_warn ("Unknown field type %d\n", spec_type);
1943 spec_type = va_arg (var_args, int);
1944 if (spec_type != 0 && !dbus_message_iter_next (iter))
1946 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1947 "Message has only %d arguments, but more were expected", i);
1963 * Initializes a DBusMessageIter representing the arguments of the
1964 * message passed in.
1966 * @param message the message
1967 * @param iter pointer to an iterator to initialize
1970 dbus_message_iter_init (DBusMessage *message,
1971 DBusMessageIter *iter)
1973 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1975 _dbus_return_if_fail (message != NULL);
1976 _dbus_return_if_fail (iter != NULL);
1978 _dbus_assert (sizeof (DBusMessageRealIter) <= sizeof (DBusMessageIter));
1980 real->message = message;
1981 real->parent_iter = NULL;
1982 real->changed_stamp = message->changed_stamp;
1984 real->type = DBUS_MESSAGE_ITER_TYPE_MESSAGE;
1986 real->end = _dbus_string_get_length (&message->body);
1988 real->container_start = 0;
1989 real->container_length_pos = 0;
1990 real->wrote_dict_key = 0;
1991 real->array_type_pos = 0;
1994 #ifndef DBUS_DISABLE_CHECKS
1996 dbus_message_iter_check (DBusMessageRealIter *iter)
2000 _dbus_warn ("dbus iterator check failed: iterator is NULL\n");
2004 if (iter->changed_stamp != iter->message->changed_stamp)
2006 _dbus_warn ("dbus iterator check failed: invalid iterator, must re-initialize it after modifying the message\n");
2010 if (iter->pos < 0 || iter->pos > iter->end)
2012 _dbus_warn ("dbus iterator check failed: invalid position\n");
2018 #endif /* DBUS_DISABLE_CHECKS */
2021 skip_array_type (DBusMessageRealIter *iter, int pos)
2027 data = _dbus_string_get_const_data_len (&iter->message->body,
2030 while (*data == DBUS_TYPE_ARRAY);
2036 dbus_message_iter_get_data_start (DBusMessageRealIter *iter, int *type)
2043 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
2044 data = _dbus_string_get_const_data_len (&iter->message->body,
2046 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
2049 *type = DBUS_TYPE_INVALID;
2051 return skip_array_type (iter, iter->pos);
2053 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
2054 data = _dbus_string_get_const_data_len (&iter->message->body,
2055 iter->array_type_pos, 1);
2056 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
2059 *type = DBUS_TYPE_INVALID;
2063 case DBUS_MESSAGE_ITER_TYPE_DICT:
2064 /* Get the length of the string */
2065 len = _dbus_demarshal_uint32 (&iter->message->body,
2066 iter->message->byte_order,
2068 pos = pos + len + 1;
2070 data = _dbus_string_get_const_data_len (&iter->message->body,
2072 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
2075 *type = DBUS_TYPE_INVALID;
2077 return skip_array_type (iter, pos);
2080 _dbus_assert_not_reached ("Invalid iter type");
2083 *type = DBUS_TYPE_INVALID;
2089 * Checks if an iterator has any more fields.
2091 * @param iter the message iter
2092 * @returns #TRUE if there are more fields
2096 dbus_message_iter_has_next (DBusMessageIter *iter)
2098 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2102 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2104 if (real->pos >= real->end)
2107 pos = dbus_message_iter_get_data_start (real, &type);
2109 if (!_dbus_marshal_get_arg_end_pos (&real->message->body,
2110 real->message->byte_order,
2111 type, pos, &end_pos))
2114 if (end_pos >= real->end)
2121 * Moves the iterator to the next field.
2123 * @param iter The message iter
2124 * @returns #TRUE if the iterator was moved to the next field
2127 dbus_message_iter_next (DBusMessageIter *iter)
2129 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2133 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2135 pos = dbus_message_iter_get_data_start (real, &type);
2137 if (!_dbus_marshal_get_arg_end_pos (&real->message->body,
2138 real->message->byte_order,
2139 type, pos, &end_pos))
2142 if (end_pos >= real->end)
2145 real->pos = end_pos;
2151 * Returns the argument type of the argument that the
2152 * message iterator points at.
2154 * @param iter the message iter
2155 * @returns the field type
2158 dbus_message_iter_get_arg_type (DBusMessageIter *iter)
2160 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2163 _dbus_return_val_if_fail (dbus_message_iter_check (real), DBUS_TYPE_INVALID);
2165 if (real->pos >= real->end)
2166 return DBUS_TYPE_INVALID;
2168 pos = dbus_message_iter_get_data_start (real, &type);
2174 iter_get_array_type (DBusMessageRealIter *iter, int *array_type_pos)
2177 int _array_type_pos;
2182 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
2183 _array_type_pos = iter->pos + 1;
2185 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
2186 _array_type_pos = iter->array_type_pos + 1;
2188 case DBUS_MESSAGE_ITER_TYPE_DICT:
2189 /* Get the length of the string */
2190 len = _dbus_demarshal_uint32 (&iter->message->body,
2191 iter->message->byte_order,
2193 pos = pos + len + 1;
2194 data = _dbus_string_get_const_data_len (&iter->message->body,
2196 _array_type_pos = pos + 1;
2199 _dbus_assert_not_reached ("wrong iter type");
2200 return DBUS_TYPE_INVALID;
2203 if (array_type_pos != NULL)
2204 *array_type_pos = _array_type_pos;
2206 data = _dbus_string_get_const_data_len (&iter->message->body,
2207 _array_type_pos, 1);
2208 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
2211 return DBUS_TYPE_INVALID;
2216 * Returns the element type of the array that the
2217 * message iterator points at. Note that you need
2218 * to check that the iterator points to an array
2219 * prior to using this function.
2221 * @param iter the message iter
2222 * @returns the field type
2225 dbus_message_iter_get_array_type (DBusMessageIter *iter)
2227 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2230 _dbus_return_val_if_fail (dbus_message_iter_check (real), DBUS_TYPE_INVALID);
2232 if (real->pos >= real->end)
2233 return DBUS_TYPE_INVALID;
2235 pos = dbus_message_iter_get_data_start (real, &type);
2237 _dbus_assert (type == DBUS_TYPE_ARRAY);
2239 return iter_get_array_type (real, NULL);
2244 * Returns the string value that an iterator may point to.
2245 * Note that you need to check that the iterator points to
2246 * a string value before using this function.
2248 * @see dbus_message_iter_get_arg_type
2249 * @param iter the message iter
2250 * @returns the string
2253 dbus_message_iter_get_string (DBusMessageIter *iter)
2255 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2258 _dbus_return_val_if_fail (dbus_message_iter_check (real), NULL);
2260 pos = dbus_message_iter_get_data_start (real, &type);
2262 _dbus_assert (type == DBUS_TYPE_STRING);
2264 return _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2269 * Returns the name and data from a named type that an
2270 * iterator may point to. Note that you need to check that
2271 * the iterator points to a named type before using this
2274 * @see dbus_message_iter_get_arg_type
2275 * @param iter the message iter
2276 * @param name return location for the name
2277 * @param value return location for data
2278 * @param len return location for length of data
2279 * @returns TRUE if get succeed
2283 dbus_message_iter_get_named (DBusMessageIter *iter,
2285 unsigned char **value,
2288 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2292 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2294 pos = dbus_message_iter_get_data_start (real, &type);
2296 _dbus_assert (type == DBUS_TYPE_NAMED);
2298 _name = _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2304 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2305 pos + 1, NULL, value, len))
2317 * Returns the byte value that an iterator may point to.
2318 * Note that you need to check that the iterator points to
2319 * a byte value before using this function.
2321 * @see dbus_message_iter_get_arg_type
2322 * @param iter the message iter
2323 * @returns the byte value
2326 dbus_message_iter_get_byte (DBusMessageIter *iter)
2328 unsigned char value;
2329 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2332 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2334 pos = dbus_message_iter_get_data_start (real, &type);
2336 _dbus_assert (type == DBUS_TYPE_BYTE);
2338 value = _dbus_string_get_byte (&real->message->body, pos);
2345 * Returns the boolean value that an iterator may point to.
2346 * Note that you need to check that the iterator points to
2347 * a boolean value before using this function.
2349 * @see dbus_message_iter_get_arg_type
2350 * @param iter the message iter
2351 * @returns the boolean value
2354 dbus_message_iter_get_boolean (DBusMessageIter *iter)
2356 unsigned char value;
2357 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2360 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2362 pos = dbus_message_iter_get_data_start (real, &type);
2364 _dbus_assert (type == DBUS_TYPE_BOOLEAN);
2366 value = _dbus_string_get_byte (&real->message->body, pos);
2372 * Returns the 32 bit signed integer value that an iterator may point to.
2373 * Note that you need to check that the iterator points to
2374 * a 32-bit integer value before using this function.
2376 * @see dbus_message_iter_get_arg_type
2377 * @param iter the message iter
2378 * @returns the integer
2381 dbus_message_iter_get_int32 (DBusMessageIter *iter)
2383 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2386 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2388 pos = dbus_message_iter_get_data_start (real, &type);
2390 _dbus_assert (type == DBUS_TYPE_INT32);
2392 return _dbus_demarshal_int32 (&real->message->body, real->message->byte_order,
2397 * Returns the 32 bit unsigned integer value that an iterator may point to.
2398 * Note that you need to check that the iterator points to
2399 * a 32-bit unsigned integer value before using this function.
2401 * @see dbus_message_iter_get_arg_type
2402 * @param iter the message iter
2403 * @returns the integer
2406 dbus_message_iter_get_uint32 (DBusMessageIter *iter)
2408 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2411 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2413 pos = dbus_message_iter_get_data_start (real, &type);
2415 _dbus_assert (type == DBUS_TYPE_UINT32);
2417 return _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2421 #ifdef DBUS_HAVE_INT64
2424 * Returns the 64 bit signed integer value that an iterator may point
2425 * to. Note that you need to check that the iterator points to a
2426 * 64-bit integer value before using this function.
2428 * This function only exists if #DBUS_HAVE_INT64 is defined.
2430 * @see dbus_message_iter_get_arg_type
2431 * @param iter the message iter
2432 * @returns the integer
2435 dbus_message_iter_get_int64 (DBusMessageIter *iter)
2437 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2440 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2442 pos = dbus_message_iter_get_data_start (real, &type);
2444 _dbus_assert (type == DBUS_TYPE_INT64);
2446 return _dbus_demarshal_int64 (&real->message->body, real->message->byte_order,
2451 * Returns the 64 bit unsigned integer value that an iterator may point to.
2452 * Note that you need to check that the iterator points to
2453 * a 64-bit unsigned integer value before using this function.
2455 * This function only exists if #DBUS_HAVE_INT64 is defined.
2457 * @see dbus_message_iter_get_arg_type
2458 * @param iter the message iter
2459 * @returns the integer
2462 dbus_message_iter_get_uint64 (DBusMessageIter *iter)
2464 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2467 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2469 pos = dbus_message_iter_get_data_start (real, &type);
2471 _dbus_assert (type == DBUS_TYPE_UINT64);
2473 return _dbus_demarshal_uint64 (&real->message->body, real->message->byte_order,
2477 #endif /* DBUS_HAVE_INT64 */
2480 * Returns the double value that an iterator may point to.
2481 * Note that you need to check that the iterator points to
2482 * a string value before using this function.
2484 * @see dbus_message_iter_get_arg_type
2485 * @param iter the message iter
2486 * @returns the double
2489 dbus_message_iter_get_double (DBusMessageIter *iter)
2491 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2494 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0.0);
2496 pos = dbus_message_iter_get_data_start (real, &type);
2498 _dbus_assert (type == DBUS_TYPE_DOUBLE);
2500 return _dbus_demarshal_double (&real->message->body, real->message->byte_order,
2505 * Initializes an iterator for the array that the iterator
2506 * may point to. Note that you need to check that the iterator
2507 * points to an array prior to using this function.
2509 * The array element type is returned in array_type, and the array
2510 * iterator can only be used to get that type of data.
2512 * @param iter the iterator
2513 * @param array_iter pointer to an iterator to initialize
2514 * @param array_type gets set to the type of the array elements
2515 * @returns #TRUE on success
2518 dbus_message_iter_init_array_iterator (DBusMessageIter *iter,
2519 DBusMessageIter *array_iter,
2522 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2523 DBusMessageRealIter *array_real = (DBusMessageRealIter *)array_iter;
2524 int type, pos, len_pos, len, array_type_pos;
2527 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2529 pos = dbus_message_iter_get_data_start (real, &type);
2531 _dbus_assert (type == DBUS_TYPE_ARRAY);
2533 _array_type = iter_get_array_type (real, &array_type_pos);
2535 len_pos = _DBUS_ALIGN_VALUE (pos, sizeof (dbus_uint32_t));
2536 len = _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2539 array_real->parent_iter = real;
2540 array_real->message = real->message;
2541 array_real->changed_stamp = real->message->changed_stamp;
2543 array_real->type = DBUS_MESSAGE_ITER_TYPE_ARRAY;
2544 array_real->pos = pos;
2545 array_real->end = pos + len;
2547 array_real->container_start = pos;
2548 array_real->container_length_pos = len_pos;
2549 array_real->wrote_dict_key = 0;
2550 array_real->array_type_pos = array_type_pos;
2551 array_real->array_type_done = TRUE;
2553 if (array_type != NULL)
2554 *array_type = _array_type;
2561 * Initializes an iterator for the dict that the iterator
2562 * may point to. Note that you need to check that the iterator
2563 * points to a dict prior to using this function.
2565 * @param iter the iterator
2566 * @param dict_iter pointer to an iterator to initialize
2567 * @returns #TRUE on success
2570 dbus_message_iter_init_dict_iterator (DBusMessageIter *iter,
2571 DBusMessageIter *dict_iter)
2573 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2574 DBusMessageRealIter *dict_real = (DBusMessageRealIter *)dict_iter;
2575 int type, pos, len_pos, len;
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_DICT);
2583 len_pos = _DBUS_ALIGN_VALUE (pos, sizeof (dbus_uint32_t));
2584 len = _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2587 dict_real->parent_iter = real;
2588 dict_real->message = real->message;
2589 dict_real->changed_stamp = real->message->changed_stamp;
2591 dict_real->type = DBUS_MESSAGE_ITER_TYPE_DICT;
2592 dict_real->pos = pos;
2593 dict_real->end = pos + len;
2595 dict_real->container_start = pos;
2596 dict_real->container_length_pos = len_pos;
2597 dict_real->wrote_dict_key = 0;
2603 * Returns the byte array that the iterator may point to.
2604 * Note that you need to check that the iterator points
2605 * to a byte array prior to using this function.
2607 * @param iter the iterator
2608 * @param value return location for array values
2609 * @param len return location for length of byte array
2610 * @returns #TRUE on success
2613 dbus_message_iter_get_byte_array (DBusMessageIter *iter,
2614 unsigned char **value,
2617 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2620 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2622 pos = dbus_message_iter_get_data_start (real, &type);
2624 _dbus_assert (type == DBUS_TYPE_ARRAY);
2626 type = iter_get_array_type (real, NULL);
2628 _dbus_assert (type == DBUS_TYPE_BYTE);
2630 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2631 pos, NULL, value, len))
2638 * Returns the boolean array that the iterator may point to. Note that
2639 * you need to check that the iterator points to an array of the
2640 * correct type prior to using this function.
2642 * @param iter the iterator
2643 * @param value return location for the array
2644 * @param len return location for the array length
2645 * @returns #TRUE on success
2648 dbus_message_iter_get_boolean_array (DBusMessageIter *iter,
2649 unsigned char **value,
2652 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2655 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2657 pos = dbus_message_iter_get_data_start (real, &type);
2659 _dbus_assert (type == DBUS_TYPE_ARRAY);
2661 type = iter_get_array_type (real, NULL);
2663 _dbus_assert (type == DBUS_TYPE_BOOLEAN);
2665 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2666 pos, NULL, value, len))
2673 * Returns the 32 bit signed integer array that the iterator may point
2674 * to. Note that you need to check that the iterator points to an
2675 * array of the correct type prior to using this function.
2677 * @param iter the iterator
2678 * @param value return location for the array
2679 * @param len return location for the array length
2680 * @returns #TRUE on success
2683 dbus_message_iter_get_int32_array (DBusMessageIter *iter,
2684 dbus_int32_t **value,
2687 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2690 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2692 pos = dbus_message_iter_get_data_start (real, &type);
2694 _dbus_assert (type == DBUS_TYPE_ARRAY);
2696 type = iter_get_array_type (real, NULL);
2698 _dbus_assert (type == DBUS_TYPE_INT32);
2700 if (!_dbus_demarshal_int32_array (&real->message->body, real->message->byte_order,
2701 pos, NULL, value, len))
2708 * Returns the 32 bit unsigned integer array that the iterator may point
2709 * to. Note that you need to check that the iterator points to an
2710 * array of the correct type prior to using this function.
2712 * @param iter the iterator
2713 * @param value return location for the array
2714 * @param len return location for the array length
2715 * @returns #TRUE on success
2718 dbus_message_iter_get_uint32_array (DBusMessageIter *iter,
2719 dbus_uint32_t **value,
2722 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2725 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2727 pos = dbus_message_iter_get_data_start (real, &type);
2729 _dbus_assert (type == DBUS_TYPE_ARRAY);
2731 type = iter_get_array_type (real, NULL);
2732 _dbus_assert (type == DBUS_TYPE_UINT32);
2734 if (!_dbus_demarshal_uint32_array (&real->message->body, real->message->byte_order,
2735 pos, NULL, value, len))
2741 #ifdef DBUS_HAVE_INT64
2744 * Returns the 64 bit signed integer array that the iterator may point
2745 * to. Note that you need to check that the iterator points to an
2746 * array of the correct type prior to using this function.
2748 * This function only exists if #DBUS_HAVE_INT64 is defined.
2750 * @param iter the iterator
2751 * @param value return location for the array
2752 * @param len return location for the array length
2753 * @returns #TRUE on success
2756 dbus_message_iter_get_int64_array (DBusMessageIter *iter,
2757 dbus_int64_t **value,
2760 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2763 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2765 pos = dbus_message_iter_get_data_start (real, &type);
2767 _dbus_assert (type == DBUS_TYPE_ARRAY);
2769 type = iter_get_array_type (real, NULL);
2771 _dbus_assert (type == DBUS_TYPE_INT64);
2773 if (!_dbus_demarshal_int64_array (&real->message->body, real->message->byte_order,
2774 pos, NULL, value, len))
2781 * Returns the 64 bit unsigned integer array that the iterator may point
2782 * to. Note that you need to check that the iterator points to an
2783 * array of the correct type prior to using this function.
2785 * This function only exists if #DBUS_HAVE_INT64 is defined.
2787 * @param iter the iterator
2788 * @param value return location for the array
2789 * @param len return location for the array length
2790 * @returns #TRUE on success
2793 dbus_message_iter_get_uint64_array (DBusMessageIter *iter,
2794 dbus_uint64_t **value,
2797 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2800 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2802 pos = dbus_message_iter_get_data_start (real, &type);
2804 _dbus_assert (type == DBUS_TYPE_ARRAY);
2806 type = iter_get_array_type (real, NULL);
2807 _dbus_assert (type == DBUS_TYPE_UINT64);
2809 if (!_dbus_demarshal_uint64_array (&real->message->body, real->message->byte_order,
2810 pos, NULL, value, len))
2816 #endif /* DBUS_HAVE_INT64 */
2819 * Returns the double array that the iterator may point to. Note that
2820 * you need to check that the iterator points to an array of the
2821 * correct type prior to using this function.
2823 * @param iter the iterator
2824 * @param value return location for the array
2825 * @param len return location for the array length
2826 * @returns #TRUE on success
2829 dbus_message_iter_get_double_array (DBusMessageIter *iter,
2833 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2836 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2838 pos = dbus_message_iter_get_data_start (real, &type);
2840 _dbus_assert (type == DBUS_TYPE_ARRAY);
2842 type = iter_get_array_type (real, NULL);
2843 _dbus_assert (type == DBUS_TYPE_DOUBLE);
2845 if (!_dbus_demarshal_double_array (&real->message->body, real->message->byte_order,
2846 pos, NULL, value, len))
2853 * Returns the string array that the iterator may point to.
2854 * Note that you need to check that the iterator points
2855 * to a byte array prior to using this function.
2857 * The returned value is a #NULL-terminated array of strings.
2858 * Each string is a separate malloc block, and the array
2859 * itself is a malloc block. You can free this type of
2860 * string array with dbus_free_string_array().
2862 * @param iter the iterator
2863 * @param value return location for string values
2864 * @param len return location for length of byte array
2865 * @returns #TRUE on success
2868 dbus_message_iter_get_string_array (DBusMessageIter *iter,
2872 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2875 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2877 pos = dbus_message_iter_get_data_start (real, &type);
2879 _dbus_assert (type == DBUS_TYPE_ARRAY);
2881 type = iter_get_array_type (real, NULL);
2882 _dbus_assert (type == DBUS_TYPE_STRING);
2884 if (!_dbus_demarshal_string_array (&real->message->body, real->message->byte_order,
2885 pos, NULL, value, len))
2892 * Returns the key name fot the dict entry that an iterator
2893 * may point to. Note that you need to check that the iterator
2894 * points to a dict entry before using this function.
2896 * @see dbus_message_iter_init_dict_iterator
2897 * @param iter the message iter
2898 * @returns the key name
2901 dbus_message_iter_get_dict_key (DBusMessageIter *iter)
2903 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2905 _dbus_return_val_if_fail (dbus_message_iter_check (real), NULL);
2907 _dbus_assert (real->type == DBUS_MESSAGE_ITER_TYPE_DICT);
2909 return _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2914 * Initializes a DBusMessageIter pointing to the end of the
2915 * message. This iterator can be used to append data to the
2918 * @param message the message
2919 * @param iter pointer to an iterator to initialize
2922 dbus_message_append_iter_init (DBusMessage *message,
2923 DBusMessageIter *iter)
2925 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2927 _dbus_return_if_fail (message != NULL);
2928 _dbus_return_if_fail (iter != NULL);
2930 real->message = message;
2931 real->parent_iter = NULL;
2932 real->changed_stamp = message->changed_stamp;
2934 real->type = DBUS_MESSAGE_ITER_TYPE_MESSAGE;
2935 real->end = _dbus_string_get_length (&real->message->body);
2936 real->pos = real->end;
2938 real->container_length_pos = 0;
2939 real->wrote_dict_key = 0;
2942 #ifndef DBUS_DISABLE_CHECKS
2944 dbus_message_iter_append_check (DBusMessageRealIter *iter)
2948 _dbus_warn ("dbus iterator check failed: NULL iterator\n");
2952 if (iter->message->locked)
2954 _dbus_warn ("dbus iterator check failed: message is locked (has already been sent)\n");
2958 if (iter->changed_stamp != iter->message->changed_stamp)
2960 _dbus_warn ("dbus iterator check failed: invalid iterator, must re-initialize it after modifying the message");
2964 if (iter->pos != iter->end)
2966 _dbus_warn ("dbus iterator check failed: can only append at end of message");
2970 if (iter->pos != _dbus_string_get_length (&iter->message->body))
2972 _dbus_warn ("dbus iterator check failed: append pos not at end of message string");
2978 #endif /* DBUS_DISABLE_CHECKS */
2981 dbus_message_iter_append_type (DBusMessageRealIter *iter,
2987 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
2988 if (!_dbus_string_append_byte (&iter->message->body, type))
2992 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
2993 data = _dbus_string_get_const_data_len (&iter->message->body,
2994 iter->array_type_pos, 1);
2997 _dbus_warn ("Appended element of wrong type for array\n");
3002 case DBUS_MESSAGE_ITER_TYPE_DICT:
3003 if (!iter->wrote_dict_key)
3005 _dbus_warn ("Appending dict data before key name\n");
3009 if (!_dbus_string_append_byte (&iter->message->body, type))
3015 _dbus_assert_not_reached ("Invalid iter type");
3023 dbus_message_iter_update_after_change (DBusMessageRealIter *iter)
3025 iter->changed_stamp = iter->message->changed_stamp;
3027 /* Set new end of iter */
3028 iter->end = _dbus_string_get_length (&iter->message->body);
3029 iter->pos = iter->end;
3031 /* Set container length */
3032 if (iter->type == DBUS_MESSAGE_ITER_TYPE_DICT ||
3033 (iter->type == DBUS_MESSAGE_ITER_TYPE_ARRAY && iter->array_type_done))
3034 _dbus_marshal_set_uint32 (&iter->message->body,
3035 iter->message->byte_order,
3036 iter->container_length_pos,
3037 iter->end - iter->container_start);
3039 if (iter->parent_iter)
3040 dbus_message_iter_update_after_change (iter->parent_iter);
3044 dbus_message_iter_append_done (DBusMessageRealIter *iter)
3046 iter->message->changed_stamp++;
3047 dbus_message_iter_update_after_change (iter);
3048 iter->wrote_dict_key = FALSE;
3052 * Appends a nil value to the message
3054 * @param iter an iterator pointing to the end of the message
3055 * @returns #TRUE on success
3058 dbus_message_iter_append_nil (DBusMessageIter *iter)
3060 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3062 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3064 if (!dbus_message_iter_append_type (real, DBUS_TYPE_NIL))
3067 dbus_message_iter_append_done (real);
3073 * Appends a boolean value to the message
3075 * @param iter an iterator pointing to the end of the message
3076 * @param value the boolean value
3077 * @returns #TRUE on success
3080 dbus_message_iter_append_boolean (DBusMessageIter *iter,
3083 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3085 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3087 if (!dbus_message_iter_append_type (real, DBUS_TYPE_BOOLEAN))
3090 if (!_dbus_string_append_byte (&real->message->body, (value != FALSE)))
3092 _dbus_string_set_length (&real->message->body, real->pos);
3096 dbus_message_iter_append_done (real);
3102 * Appends a byte to the message
3104 * @param iter an iterator pointing to the end of the message
3105 * @param value the byte value
3106 * @returns #TRUE on success
3109 dbus_message_iter_append_byte (DBusMessageIter *iter,
3110 unsigned char value)
3112 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3114 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3116 if (!dbus_message_iter_append_type (real, DBUS_TYPE_BYTE))
3119 if (!_dbus_string_append_byte (&real->message->body, value))
3121 _dbus_string_set_length (&real->message->body, real->pos);
3125 dbus_message_iter_append_done (real);
3132 * Appends a 32 bit signed integer to the message.
3134 * @param iter an iterator pointing to the end of the message
3135 * @param value the integer value
3136 * @returns #TRUE on success
3139 dbus_message_iter_append_int32 (DBusMessageIter *iter,
3142 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3144 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3146 if (!dbus_message_iter_append_type (real, DBUS_TYPE_INT32))
3149 if (!_dbus_marshal_int32 (&real->message->body, real->message->byte_order, value))
3151 _dbus_string_set_length (&real->message->body, real->pos);
3155 dbus_message_iter_append_done (real);
3161 * Appends a 32 bit unsigned integer to the message.
3163 * @param iter an iterator pointing to the end of the message
3164 * @param value the integer value
3165 * @returns #TRUE on success
3168 dbus_message_iter_append_uint32 (DBusMessageIter *iter,
3169 dbus_uint32_t value)
3171 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3173 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3175 if (!dbus_message_iter_append_type (real, DBUS_TYPE_UINT32))
3178 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, value))
3180 _dbus_string_set_length (&real->message->body, real->pos);
3184 dbus_message_iter_append_done (real);
3189 #ifdef DBUS_HAVE_INT64
3192 * Appends a 64 bit signed integer to the message.
3194 * This function only exists if #DBUS_HAVE_INT64 is defined.
3196 * @param iter an iterator pointing to the end of the message
3197 * @param value the integer value
3198 * @returns #TRUE on success
3201 dbus_message_iter_append_int64 (DBusMessageIter *iter,
3204 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3206 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3208 if (!dbus_message_iter_append_type (real, DBUS_TYPE_INT64))
3211 if (!_dbus_marshal_int64 (&real->message->body, real->message->byte_order, value))
3213 _dbus_string_set_length (&real->message->body, real->pos);
3217 dbus_message_iter_append_done (real);
3223 * Appends a 64 bit unsigned integer to the message.
3225 * This function only exists if #DBUS_HAVE_INT64 is defined.
3227 * @param iter an iterator pointing to the end of the message
3228 * @param value the integer value
3229 * @returns #TRUE on success
3232 dbus_message_iter_append_uint64 (DBusMessageIter *iter,
3233 dbus_uint64_t value)
3235 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3237 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3239 if (!dbus_message_iter_append_type (real, DBUS_TYPE_UINT64))
3242 if (!_dbus_marshal_uint64 (&real->message->body, real->message->byte_order, value))
3244 _dbus_string_set_length (&real->message->body, real->pos);
3248 dbus_message_iter_append_done (real);
3253 #endif /* DBUS_HAVE_INT64 */
3256 * Appends a double value to the message.
3258 * @param iter an iterator pointing to the end of the message
3259 * @param value the double value
3260 * @returns #TRUE on success
3263 dbus_message_iter_append_double (DBusMessageIter *iter,
3266 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3268 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3270 if (!dbus_message_iter_append_type (real, DBUS_TYPE_DOUBLE))
3273 if (!_dbus_marshal_double (&real->message->body, real->message->byte_order, value))
3275 _dbus_string_set_length (&real->message->body, real->pos);
3279 dbus_message_iter_append_done (real);
3285 * Appends a UTF-8 string to the message.
3287 * @param iter an iterator pointing to the end of the message
3288 * @param value the string
3289 * @returns #TRUE on success
3292 dbus_message_iter_append_string (DBusMessageIter *iter,
3295 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3297 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3299 if (!dbus_message_iter_append_type (real, DBUS_TYPE_STRING))
3302 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, value))
3304 _dbus_string_set_length (&real->message->body, real->pos);
3308 dbus_message_iter_append_done (real);
3314 * Appends a named type data chunk to the message. A named
3315 * type is simply an arbitrary UTF-8 string used as a type
3316 * tag, plus an array of arbitrary bytes to be interpreted
3317 * according to the type tag.
3319 * @param iter an iterator pointing to the end of the message
3320 * @param name the name of the type
3321 * @param data the binary data used to store the value
3322 * @param len the length of the binary data in bytes
3323 * @returns #TRUE on success
3326 dbus_message_iter_append_named (DBusMessageIter *iter,
3328 const unsigned char *data,
3331 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3333 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3335 if (!dbus_message_iter_append_type (real, DBUS_TYPE_NAMED))
3338 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, name))
3340 _dbus_string_set_length (&real->message->body, real->pos);
3344 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, data, len))
3346 _dbus_string_set_length (&real->message->body, real->pos);
3350 dbus_message_iter_append_done (real);
3357 * Appends a dict key name to the message. The iterator used
3358 * must point to a dict.
3360 * @param iter an iterator pointing to the end of the message
3361 * @param value the string
3362 * @returns #TRUE on success
3365 dbus_message_iter_append_dict_key (DBusMessageIter *iter,
3368 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3370 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3371 _dbus_assert (real->type == DBUS_MESSAGE_ITER_TYPE_DICT);
3373 if (real->wrote_dict_key)
3375 _dbus_warn ("Appendinging multiple dict key names\n");
3379 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, value))
3384 dbus_message_iter_append_done (real);
3385 real->wrote_dict_key = TRUE;
3391 array_iter_type_mark_done (DBusMessageRealIter *iter)
3395 if (iter->type == DBUS_MESSAGE_ITER_TYPE_ARRAY)
3396 array_iter_type_mark_done (iter->parent_iter);
3400 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&iter->message->body),
3401 sizeof (dbus_uint32_t));
3403 /* Empty length for now, backfill later */
3404 if (!_dbus_marshal_uint32 (&iter->message->body, iter->message->byte_order, 0))
3406 _dbus_string_set_length (&iter->message->body, iter->pos);
3410 iter->container_start = _dbus_string_get_length (&iter->message->body);
3411 iter->container_length_pos = len_pos;
3412 iter->array_type_done = TRUE;
3418 append_array_type (DBusMessageRealIter *real,
3420 dbus_bool_t *array_type_done,
3421 int *array_type_pos)
3423 int existing_element_type;
3425 if (!dbus_message_iter_append_type (real, DBUS_TYPE_ARRAY))
3428 if (real->type == DBUS_MESSAGE_ITER_TYPE_ARRAY &&
3429 real->array_type_done)
3431 existing_element_type = iter_get_array_type (real, array_type_pos);
3432 if (existing_element_type != element_type)
3434 _dbus_warn ("Appending array of %s, when expecting array of %s\n",
3435 _dbus_type_to_string (element_type),
3436 _dbus_type_to_string (existing_element_type));
3437 _dbus_string_set_length (&real->message->body, real->pos);
3440 if (array_type_done != NULL)
3441 *array_type_done = TRUE;
3445 if (array_type_pos != NULL)
3446 *array_type_pos = _dbus_string_get_length (&real->message->body);
3448 /* Append element type */
3449 if (!_dbus_string_append_byte (&real->message->body, element_type))
3451 _dbus_string_set_length (&real->message->body, real->pos);
3455 if (array_type_done != NULL)
3456 *array_type_done = element_type != DBUS_TYPE_ARRAY;
3458 if (element_type != DBUS_TYPE_ARRAY &&
3459 !array_iter_type_mark_done (real))
3467 * Appends an array to the message and initializes an iterator that
3468 * can be used to append to the array.
3470 * @param iter an iterator pointing to the end of the message
3471 * @param array_iter pointer to an iter that will be initialized
3472 * @param element_type the type of the array elements
3473 * @returns #TRUE on success
3476 dbus_message_iter_append_array (DBusMessageIter *iter,
3477 DBusMessageIter *array_iter,
3480 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3481 DBusMessageRealIter *array_real = (DBusMessageRealIter *)array_iter;
3484 dbus_bool_t array_type_done;
3486 if (element_type == DBUS_TYPE_NIL)
3488 _dbus_warn ("Can't create NIL arrays\n");
3492 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3494 if (!append_array_type (real, element_type, &array_type_done, &array_type_pos))
3497 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&real->message->body), sizeof (dbus_uint32_t));
3499 if (array_type_done)
3501 /* Empty length for now, backfill later */
3502 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, 0))
3504 _dbus_string_set_length (&real->message->body, real->pos);
3509 array_real->parent_iter = real;
3510 array_real->message = real->message;
3511 array_real->changed_stamp = real->message->changed_stamp;
3513 array_real->type = DBUS_MESSAGE_ITER_TYPE_ARRAY;
3514 array_real->pos = _dbus_string_get_length (&real->message->body);
3515 array_real->end = array_real->end;
3517 array_real->container_start = array_real->pos;
3518 array_real->container_length_pos = len_pos;
3519 array_real->wrote_dict_key = 0;
3520 array_real->array_type_done = array_type_done;
3521 array_real->array_type_pos = array_type_pos;
3523 dbus_message_iter_append_done (array_real);
3529 * Appends a dict to the message and initializes an iterator that
3530 * can be used to append to the dict.
3532 * @param iter an iterator pointing to the end of the message
3533 * @param dict_iter pointer to an iter that will be initialized
3534 * @returns #TRUE on success
3537 dbus_message_iter_append_dict (DBusMessageIter *iter,
3538 DBusMessageIter *dict_iter)
3540 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3541 DBusMessageRealIter *dict_real = (DBusMessageRealIter *)dict_iter;
3544 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3546 if (!dbus_message_iter_append_type (real, DBUS_TYPE_DICT))
3549 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&real->message->body), sizeof (dbus_uint32_t));
3551 /* Empty length for now, backfill later */
3552 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, 0))
3554 _dbus_string_set_length (&real->message->body, real->pos);
3558 dict_real->parent_iter = real;
3559 dict_real->message = real->message;
3560 dict_real->changed_stamp = real->message->changed_stamp;
3562 dict_real->type = DBUS_MESSAGE_ITER_TYPE_DICT;
3563 dict_real->pos = _dbus_string_get_length (&real->message->body);
3564 dict_real->end = dict_real->end;
3566 dict_real->container_start = dict_real->pos;
3567 dict_real->container_length_pos = len_pos;
3568 dict_real->wrote_dict_key = 0;
3570 dbus_message_iter_append_done (dict_real);
3577 * Appends a boolean array to the message.
3579 * @param iter an iterator pointing to the end of the message
3580 * @param value the array
3581 * @param len the length of the array
3582 * @returns #TRUE on success
3585 dbus_message_iter_append_boolean_array (DBusMessageIter *iter,
3586 unsigned const char *value,
3589 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3591 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3593 if (!append_array_type (real, DBUS_TYPE_BOOLEAN, NULL, NULL))
3596 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, value, len))
3598 _dbus_string_set_length (&real->message->body, real->pos);
3602 dbus_message_iter_append_done (real);
3608 * Appends a 32 bit signed integer array to the message.
3610 * @param iter an iterator pointing to the end of the message
3611 * @param value the array
3612 * @param len the length of the array
3613 * @returns #TRUE on success
3616 dbus_message_iter_append_int32_array (DBusMessageIter *iter,
3617 const dbus_int32_t *value,
3620 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3622 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3624 if (!append_array_type (real, DBUS_TYPE_INT32, NULL, NULL))
3627 if (!_dbus_marshal_int32_array (&real->message->body, real->message->byte_order, value, len))
3629 _dbus_string_set_length (&real->message->body, real->pos);
3633 dbus_message_iter_append_done (real);
3639 * Appends a 32 bit unsigned integer array to the message.
3641 * @param iter an iterator pointing to the end of the message
3642 * @param value the array
3643 * @param len the length of the array
3644 * @returns #TRUE on success
3647 dbus_message_iter_append_uint32_array (DBusMessageIter *iter,
3648 const dbus_uint32_t *value,
3651 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3653 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3655 if (!append_array_type (real, DBUS_TYPE_UINT32, NULL, NULL))
3658 if (!_dbus_marshal_uint32_array (&real->message->body, real->message->byte_order, value, len))
3660 _dbus_string_set_length (&real->message->body, real->pos);
3664 dbus_message_iter_append_done (real);
3669 #ifdef DBUS_HAVE_INT64
3672 * Appends a 64 bit signed integer array to the message.
3674 * This function only exists if #DBUS_HAVE_INT64 is defined.
3676 * @param iter an iterator pointing to the end of the message
3677 * @param value the array
3678 * @param len the length of the array
3679 * @returns #TRUE on success
3682 dbus_message_iter_append_int64_array (DBusMessageIter *iter,
3683 const dbus_int64_t *value,
3686 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3688 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3690 if (!append_array_type (real, DBUS_TYPE_INT64, NULL, NULL))
3693 if (!_dbus_marshal_int64_array (&real->message->body, real->message->byte_order, value, len))
3695 _dbus_string_set_length (&real->message->body, real->pos);
3699 dbus_message_iter_append_done (real);
3705 * Appends a 64 bit unsigned integer array to the message.
3707 * This function only exists if #DBUS_HAVE_INT64 is defined.
3709 * @param iter an iterator pointing to the end of the message
3710 * @param value the array
3711 * @param len the length of the array
3712 * @returns #TRUE on success
3715 dbus_message_iter_append_uint64_array (DBusMessageIter *iter,
3716 const dbus_uint64_t *value,
3719 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3721 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3723 if (!append_array_type (real, DBUS_TYPE_UINT64, NULL, NULL))
3726 if (!_dbus_marshal_uint64_array (&real->message->body, real->message->byte_order, value, len))
3728 _dbus_string_set_length (&real->message->body, real->pos);
3732 dbus_message_iter_append_done (real);
3736 #endif /* DBUS_HAVE_INT64 */
3739 * Appends a double array to the message.
3741 * @param iter an iterator pointing to the end of the message
3742 * @param value the array
3743 * @param len the length of the array
3744 * @returns #TRUE on success
3747 dbus_message_iter_append_double_array (DBusMessageIter *iter,
3748 const double *value,
3751 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3753 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3755 if (!append_array_type (real, DBUS_TYPE_DOUBLE, NULL, NULL))
3758 if (!_dbus_marshal_double_array (&real->message->body, real->message->byte_order, value, len))
3760 _dbus_string_set_length (&real->message->body, real->pos);
3764 dbus_message_iter_append_done (real);
3770 * Appends a byte array to the message.
3772 * @param iter an iterator pointing to the end of the message
3773 * @param value the array
3774 * @param len the length of the array
3775 * @returns #TRUE on success
3778 dbus_message_iter_append_byte_array (DBusMessageIter *iter,
3779 unsigned const char *value,
3782 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3784 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3786 if (!append_array_type (real, DBUS_TYPE_BYTE, NULL, NULL))
3789 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, value, len))
3791 _dbus_string_set_length (&real->message->body, real->pos);
3795 dbus_message_iter_append_done (real);
3801 * Appends a string array to the message.
3803 * @param iter an iterator pointing to the end of the message
3804 * @param value the array
3805 * @param len the length of the array
3806 * @returns #TRUE on success
3809 dbus_message_iter_append_string_array (DBusMessageIter *iter,
3813 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3815 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3817 if (!append_array_type (real, DBUS_TYPE_STRING, NULL, NULL))
3820 if (!_dbus_marshal_string_array (&real->message->body, real->message->byte_order, value, len))
3822 _dbus_string_set_length (&real->message->body, real->pos);
3826 dbus_message_iter_append_done (real);
3832 * Sets the message sender.
3834 * @param message the message
3835 * @param sender the sender
3836 * @returns #FALSE if not enough memory
3839 dbus_message_set_sender (DBusMessage *message,
3842 _dbus_return_val_if_fail (message != NULL, FALSE);
3843 _dbus_return_val_if_fail (!message->locked, FALSE);
3847 delete_string_field (message, FIELD_SENDER);
3852 return set_string_field (message,
3859 * Sets a flag indicating that the message does not want a reply; if
3860 * this flag is set, the other end of the connection may (but is not
3861 * required to) optimize by not sending method return or error
3862 * replies. If this flag is set, there is no way to know whether the
3863 * message successfully arrived at the remote end.
3865 * @param message the message
3866 * @param no_reply #TRUE if no reply is desired
3869 dbus_message_set_no_reply (DBusMessage *message,
3870 dbus_bool_t no_reply)
3874 _dbus_return_if_fail (message != NULL);
3875 _dbus_return_if_fail (!message->locked);
3877 header = _dbus_string_get_data_len (&message->header, FLAGS_OFFSET, 1);
3880 *header |= DBUS_HEADER_FLAG_NO_REPLY_EXPECTED;
3882 *header &= ~DBUS_HEADER_FLAG_NO_REPLY_EXPECTED;
3886 * Returns #TRUE if the message does not expect
3889 * @param message the message
3890 * @returns #TRUE if the message sender isn't waiting for a reply
3893 dbus_message_get_no_reply (DBusMessage *message)
3897 _dbus_return_val_if_fail (message != NULL, FALSE);
3899 header = _dbus_string_get_const_data_len (&message->header, FLAGS_OFFSET, 1);
3901 return (*header & DBUS_HEADER_FLAG_NO_REPLY_EXPECTED) != 0;
3905 * Gets the service which originated this message,
3906 * or #NULL if unknown or inapplicable.
3908 * @param message the message
3909 * @returns the service name or #NULL
3912 dbus_message_get_sender (DBusMessage *message)
3914 _dbus_return_val_if_fail (message != NULL, NULL);
3916 return get_string_field (message, FIELD_SENDER, NULL);
3920 * Checks whether the message has the given name.
3921 * If the message has no name or has a different
3922 * name, returns #FALSE.
3924 * @param message the message
3925 * @param name the name to check (must not be #NULL)
3927 * @returns #TRUE if the message has the given name
3930 dbus_message_has_name (DBusMessage *message,
3935 _dbus_return_val_if_fail (message != NULL, FALSE);
3936 _dbus_return_val_if_fail (name != NULL, FALSE);
3938 n = dbus_message_get_name (message);
3940 if (n && strcmp (n, name) == 0)
3947 * Checks whether the message was sent to the given service. If the
3948 * message has no service specified or has a different name, returns
3951 * @param message the message
3952 * @param service the service to check (must not be #NULL)
3954 * @returns #TRUE if the message has the given destination service
3957 dbus_message_has_destination (DBusMessage *message,
3958 const char *service)
3962 _dbus_return_val_if_fail (message != NULL, FALSE);
3963 _dbus_return_val_if_fail (service != NULL, FALSE);
3965 s = dbus_message_get_destination (message);
3967 if (s && strcmp (s, service) == 0)
3974 * Checks whether the message has the given service as its sender. If
3975 * the message has no sender specified or has a different sender,
3976 * returns #FALSE. Note that if a peer application owns multiple
3977 * services, its messages will have only one of those services as the
3978 * sender (usually the base service). So you can't use this
3979 * function to prove the sender didn't own service Foo, you can
3980 * only use it to prove that it did.
3982 * @param message the message
3983 * @param service the service to check (must not be #NULL)
3985 * @returns #TRUE if the message has the given origin service
3988 dbus_message_has_sender (DBusMessage *message,
3989 const char *service)
3993 _dbus_assert (service != NULL);
3995 s = dbus_message_get_sender (message);
3997 if (s && strcmp (s, service) == 0)
4004 * Sets a #DBusError based on the contents of the given
4005 * message. The error is only set if the message
4006 * is an error message, as in DBUS_MESSAGE_TYPE_ERROR.
4007 * The name of the error is set to the name of the message,
4008 * and the error message is set to the first argument
4009 * if the argument exists and is a string.
4011 * The return value indicates whether the error was set (the error is
4012 * set if and only if the message is an error message).
4013 * So you can check for an error reply and convert it to DBusError
4016 * @param error the error to set
4017 * @param message the message to set it from
4018 * @returns #TRUE if dbus_message_get_is_error() returns #TRUE for the message
4021 dbus_set_error_from_message (DBusError *error,
4022 DBusMessage *message)
4026 _dbus_return_val_if_fail (message != NULL, FALSE);
4027 _dbus_return_val_if_error_is_set (error, FALSE);
4029 if (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_ERROR)
4033 dbus_message_get_args (message, NULL,
4034 DBUS_TYPE_STRING, &str,
4037 dbus_set_error (error, dbus_message_get_name (message),
4038 str ? "%s" : NULL, str);
4048 * @addtogroup DBusMessageInternals
4053 * @typedef DBusMessageLoader
4055 * The DBusMessageLoader object encapsulates the process of converting
4056 * a byte stream into a series of DBusMessage. It buffers the incoming
4057 * bytes as efficiently as possible, and generates a queue of
4058 * messages. DBusMessageLoader is typically used as part of a
4059 * DBusTransport implementation. The DBusTransport then hands off
4060 * the loaded messages to a DBusConnection, making the messages
4061 * visible to the application.
4063 * @todo write tests for break-loader that a) randomly delete header
4064 * fields and b) set string fields to zero-length and other funky
4069 /* we definitely use signed ints for sizes, so don't exceed
4070 * _DBUS_INT_MAX; and add 16 for paranoia, since a message
4071 * over 128M is pretty nuts anyhow.
4075 * The maximum sane message size.
4077 #define MAX_SANE_MESSAGE_SIZE (_DBUS_INT_MAX/16)
4080 * Implementation details of DBusMessageLoader.
4081 * All members are private.
4083 struct DBusMessageLoader
4085 int refcount; /**< Reference count. */
4087 DBusString data; /**< Buffered data */
4089 DBusList *messages; /**< Complete messages. */
4091 long max_message_size; /**< Maximum size of a message */
4093 unsigned int buffer_outstanding : 1; /**< Someone is using the buffer to read */
4095 unsigned int corrupted : 1; /**< We got broken data, and are no longer working */
4099 * The initial buffer size of the message loader.
4101 * @todo this should be based on min header size plus some average
4102 * body size, or something. Or rather, the min header size only, if we
4103 * want to try to read only the header, store that in a DBusMessage,
4104 * then read only the body and store that, etc., depends on
4105 * how we optimize _dbus_message_loader_get_buffer() and what
4106 * the exact message format is.
4108 #define INITIAL_LOADER_DATA_LEN 32
4111 * Creates a new message loader. Returns #NULL if memory can't
4114 * @returns new loader, or #NULL.
4117 _dbus_message_loader_new (void)
4119 DBusMessageLoader *loader;
4121 loader = dbus_new0 (DBusMessageLoader, 1);
4125 loader->refcount = 1;
4127 /* Try to cap message size at something that won't *totally* hose
4128 * the system if we have a couple of them.
4130 loader->max_message_size = _DBUS_ONE_MEGABYTE * 32;
4132 if (!_dbus_string_init (&loader->data))
4138 /* preallocate the buffer for speed, ignore failure */
4139 _dbus_string_set_length (&loader->data, INITIAL_LOADER_DATA_LEN);
4140 _dbus_string_set_length (&loader->data, 0);
4146 * Increments the reference count of the loader.
4148 * @param loader the loader.
4151 _dbus_message_loader_ref (DBusMessageLoader *loader)
4153 loader->refcount += 1;
4157 * Decrements the reference count of the loader and finalizes the
4158 * loader when the count reaches zero.
4160 * @param loader the loader.
4163 _dbus_message_loader_unref (DBusMessageLoader *loader)
4165 loader->refcount -= 1;
4166 if (loader->refcount == 0)
4168 _dbus_list_foreach (&loader->messages,
4169 (DBusForeachFunction) dbus_message_unref,
4171 _dbus_list_clear (&loader->messages);
4172 _dbus_string_free (&loader->data);
4178 * Gets the buffer to use for reading data from the network. Network
4179 * data is read directly into an allocated buffer, which is then used
4180 * in the DBusMessage, to avoid as many extra memcpy's as possible.
4181 * The buffer must always be returned immediately using
4182 * _dbus_message_loader_return_buffer(), even if no bytes are
4183 * successfully read.
4185 * @todo this function can be a lot more clever. For example
4186 * it can probably always return a buffer size to read exactly
4187 * the body of the next message, thus avoiding any memory wastage
4190 * @todo we need to enforce a max length on strings in header fields.
4192 * @param loader the message loader.
4193 * @param buffer the buffer
4196 _dbus_message_loader_get_buffer (DBusMessageLoader *loader,
4197 DBusString **buffer)
4199 _dbus_assert (!loader->buffer_outstanding);
4201 *buffer = &loader->data;
4203 loader->buffer_outstanding = TRUE;
4207 * The smallest header size that can occur.
4208 * (It won't be valid)
4210 #define DBUS_MINIMUM_HEADER_SIZE 16
4212 /** Pack four characters as in "abcd" into a uint32 */
4213 #define FOUR_CHARS_TO_UINT32(a, b, c, d) \
4214 ((((dbus_uint32_t)a) << 24) | \
4215 (((dbus_uint32_t)b) << 16) | \
4216 (((dbus_uint32_t)c) << 8) | \
4219 /** DBUS_HEADER_FIELD_NAME packed into a dbus_uint32_t */
4220 #define DBUS_HEADER_FIELD_NAME_AS_UINT32 \
4221 FOUR_CHARS_TO_UINT32 ('n', 'a', 'm', 'e')
4223 /** DBUS_HEADER_FIELD_SERVICE packed into a dbus_uint32_t */
4224 #define DBUS_HEADER_FIELD_SERVICE_AS_UINT32 \
4225 FOUR_CHARS_TO_UINT32 ('s', 'r', 'v', 'c')
4227 /** DBUS_HEADER_FIELD_REPLY packed into a dbus_uint32_t */
4228 #define DBUS_HEADER_FIELD_REPLY_AS_UINT32 \
4229 FOUR_CHARS_TO_UINT32 ('r', 'p', 'l', 'y')
4231 /** DBUS_HEADER_FIELD_SENDER Packed into a dbus_uint32_t */
4232 #define DBUS_HEADER_FIELD_SENDER_AS_UINT32 \
4233 FOUR_CHARS_TO_UINT32 ('s', 'n', 'd', 'r')
4236 decode_string_field (const DBusString *data,
4237 HeaderField fields[FIELD_LAST],
4241 const char *field_name)
4244 int string_data_pos;
4246 if (fields[field].offset >= 0)
4248 _dbus_verbose ("%s field provided twice\n",
4253 if (type != DBUS_TYPE_STRING)
4255 _dbus_verbose ("%s field has wrong type %s\n",
4256 field_name, _dbus_type_to_string (type));
4260 /* skip padding after typecode, skip string length;
4261 * we assume that the string arg has already been validated
4262 * for sanity and UTF-8
4264 string_data_pos = _DBUS_ALIGN_VALUE (pos, 4) + 4;
4265 _dbus_assert (string_data_pos < _dbus_string_get_length (data));
4267 _dbus_string_init_const (&tmp,
4268 _dbus_string_get_const_data (data) + string_data_pos);
4270 if (field == FIELD_NAME)
4272 if (!_dbus_string_validate_name (&tmp, 0, _dbus_string_get_length (&tmp)))
4274 _dbus_verbose ("%s field has invalid content \"%s\"\n",
4275 field_name, _dbus_string_get_const_data (&tmp));
4279 if (_dbus_string_starts_with_c_str (&tmp,
4280 DBUS_NAMESPACE_LOCAL_MESSAGE))
4282 _dbus_verbose ("Message is in the local namespace\n");
4288 if (!_dbus_string_validate_service (&tmp, 0, _dbus_string_get_length (&tmp)))
4290 _dbus_verbose ("%s field has invalid content \"%s\"\n",
4291 field_name, _dbus_string_get_const_data (&tmp));
4296 fields[field].offset = _DBUS_ALIGN_VALUE (pos, 4);
4299 _dbus_verbose ("Found field %s name at offset %d\n",
4300 field_name, fields[field].offset);
4307 decode_header_data (const DBusString *data,
4310 HeaderField fields[FIELD_LAST],
4311 int *message_padding)
4318 if (header_len < 16)
4322 while (i < FIELD_LAST)
4324 fields[i].offset = -1;
4328 fields[FIELD_HEADER_LENGTH].offset = 4;
4329 fields[FIELD_BODY_LENGTH].offset = 8;
4330 fields[FIELD_CLIENT_SERIAL].offset = 12;
4332 /* Now handle the named fields. A real named field is at least 4
4333 * bytes for the name, plus a type code (1 byte) plus padding. So
4334 * if we have less than 8 bytes left, it must be alignment padding,
4335 * not a field. While >= 8 bytes can't be entirely alignment
4339 while ((pos + 7) < header_len)
4341 pos = _DBUS_ALIGN_VALUE (pos, 4);
4343 if ((pos + 4) > header_len)
4346 field =_dbus_string_get_const_data_len (data, pos, 4);
4349 _dbus_assert (_DBUS_ALIGN_ADDRESS (field, 4) == field);
4351 if (!_dbus_marshal_validate_type (data, pos, &type, &pos))
4353 _dbus_verbose ("Failed to validate type of named header field\n");
4357 if (!_dbus_marshal_validate_arg (data, byte_order, 0, type, -1, pos, &new_pos))
4359 _dbus_verbose ("Failed to validate argument to named header field\n");
4363 if (new_pos > header_len)
4365 _dbus_verbose ("Named header field tries to extend beyond header length\n");
4369 switch (DBUS_UINT32_FROM_BE (*(int*)field))
4371 case DBUS_HEADER_FIELD_SERVICE_AS_UINT32:
4372 if (!decode_string_field (data, fields, pos, type,
4374 DBUS_HEADER_FIELD_SERVICE))
4378 case DBUS_HEADER_FIELD_NAME_AS_UINT32:
4379 if (!decode_string_field (data, fields, pos, type,
4381 DBUS_HEADER_FIELD_NAME))
4385 case DBUS_HEADER_FIELD_SENDER_AS_UINT32:
4386 if (!decode_string_field (data, fields, pos, type,
4388 DBUS_HEADER_FIELD_SENDER))
4392 case DBUS_HEADER_FIELD_REPLY_AS_UINT32:
4393 if (fields[FIELD_REPLY_SERIAL].offset >= 0)
4395 _dbus_verbose ("%s field provided twice\n",
4396 DBUS_HEADER_FIELD_REPLY);
4400 if (type != DBUS_TYPE_UINT32)
4402 _dbus_verbose ("%s field has wrong type\n", DBUS_HEADER_FIELD_REPLY);
4406 fields[FIELD_REPLY_SERIAL].offset = _DBUS_ALIGN_VALUE (pos, 4);
4408 _dbus_verbose ("Found reply serial at offset %d\n",
4409 fields[FIELD_REPLY_SERIAL].offset);
4413 _dbus_verbose ("Ignoring an unknown header field: %.4s at offset %d\n",
4420 if (pos < header_len)
4422 /* Alignment padding, verify that it's nul */
4423 _dbus_assert ((header_len - pos) < 8);
4425 if (!_dbus_string_validate_nul (data,
4426 pos, (header_len - pos)))
4428 _dbus_verbose ("header alignment padding is not nul\n");
4433 /* Name field is mandatory */
4434 if (fields[FIELD_NAME].offset < 0)
4436 _dbus_verbose ("No %s field provided\n",
4437 DBUS_HEADER_FIELD_NAME);
4441 if (message_padding)
4442 *message_padding = header_len - pos;
4448 * Returns a buffer obtained from _dbus_message_loader_get_buffer(),
4449 * indicating to the loader how many bytes of the buffer were filled
4450 * in. This function must always be called, even if no bytes were
4451 * successfully read.
4453 * @param loader the loader.
4454 * @param buffer the buffer.
4455 * @param bytes_read number of bytes that were read into the buffer.
4458 _dbus_message_loader_return_buffer (DBusMessageLoader *loader,
4462 _dbus_assert (loader->buffer_outstanding);
4463 _dbus_assert (buffer == &loader->data);
4465 loader->buffer_outstanding = FALSE;
4469 * Converts buffered data into messages.
4471 * @todo we need to check that the proper named header fields exist
4472 * for each message type.
4474 * @param loader the loader.
4475 * @returns #TRUE if we had enough memory to finish.
4478 _dbus_message_loader_queue_messages (DBusMessageLoader *loader)
4480 if (loader->corrupted)
4483 while (_dbus_string_get_length (&loader->data) >= 16)
4485 DBusMessage *message;
4486 const char *header_data;
4487 int byte_order, message_type, header_len, body_len, header_padding;
4488 dbus_uint32_t header_len_unsigned, body_len_unsigned;
4490 header_data = _dbus_string_get_const_data_len (&loader->data, 0, 16);
4492 _dbus_assert (_DBUS_ALIGN_ADDRESS (header_data, 4) == header_data);
4494 if (header_data[VERSION_OFFSET] != DBUS_MAJOR_PROTOCOL_VERSION)
4496 _dbus_verbose ("Message has protocol version %d ours is %d\n",
4497 (int) header_data[VERSION_OFFSET], DBUS_MAJOR_PROTOCOL_VERSION);
4498 loader->corrupted = TRUE;
4502 byte_order = header_data[BYTE_ORDER_OFFSET];
4504 if (byte_order != DBUS_LITTLE_ENDIAN &&
4505 byte_order != DBUS_BIG_ENDIAN)
4507 _dbus_verbose ("Message with bad byte order '%c' received\n",
4509 loader->corrupted = TRUE;
4513 /* Unknown types are ignored, but INVALID is
4516 message_type = header_data[TYPE_OFFSET];
4517 if (message_type == DBUS_MESSAGE_TYPE_INVALID)
4519 _dbus_verbose ("Message with bad type '%d' received\n",
4521 loader->corrupted = TRUE;
4525 header_len_unsigned = _dbus_unpack_uint32 (byte_order, header_data + 4);
4526 body_len_unsigned = _dbus_unpack_uint32 (byte_order, header_data + 8);
4528 if (header_len_unsigned < 16)
4530 _dbus_verbose ("Message had broken too-small header length %u\n",
4531 header_len_unsigned);
4532 loader->corrupted = TRUE;
4536 if (header_len_unsigned > (unsigned) MAX_SANE_MESSAGE_SIZE ||
4537 body_len_unsigned > (unsigned) MAX_SANE_MESSAGE_SIZE)
4539 _dbus_verbose ("Header or body length too large (%u %u)\n",
4540 header_len_unsigned,
4542 loader->corrupted = TRUE;
4546 /* Now that we know the values are in signed range, get
4547 * rid of stupid unsigned, just causes bugs
4549 header_len = header_len_unsigned;
4550 body_len = body_len_unsigned;
4552 if (_DBUS_ALIGN_VALUE (header_len, 8) != header_len_unsigned)
4555 _dbus_verbose ("header length %d is not aligned to 8 bytes\n",
4557 loader->corrupted = TRUE;
4561 if (header_len + body_len > loader->max_message_size)
4563 _dbus_verbose ("Message claimed length header = %d body = %d exceeds max message length %ld\n",
4564 header_len, body_len, loader->max_message_size);
4565 loader->corrupted = TRUE;
4569 if (_dbus_string_get_length (&loader->data) >= (header_len + body_len))
4571 HeaderField fields[FIELD_LAST];
4576 _dbus_verbose_bytes_of_string (&loader->data, 0, header_len + body_len);
4578 if (!decode_header_data (&loader->data, header_len, byte_order,
4579 fields, &header_padding))
4581 _dbus_verbose ("Header was invalid\n");
4582 loader->corrupted = TRUE;
4586 next_arg = header_len;
4587 while (next_arg < (header_len + body_len))
4590 int prev = next_arg;
4592 if (!_dbus_marshal_validate_type (&loader->data, next_arg,
4595 _dbus_verbose ("invalid typecode at offset %d\n", prev);
4596 loader->corrupted = TRUE;
4600 if (!_dbus_marshal_validate_arg (&loader->data,
4607 _dbus_verbose ("invalid type data at %d, next_arg\n", next_arg);
4608 loader->corrupted = TRUE;
4612 _dbus_assert (next_arg > prev);
4615 if (next_arg > (header_len + body_len))
4617 _dbus_verbose ("end of last arg at %d but message has len %d+%d=%d\n",
4618 next_arg, header_len, body_len,
4619 header_len + body_len);
4620 loader->corrupted = TRUE;
4624 message = dbus_message_new_empty_header ();
4625 if (message == NULL)
4627 _dbus_verbose ("Failed to allocate empty message\n");
4631 message->byte_order = byte_order;
4632 message->header_padding = header_padding;
4634 /* Copy in the offsets we found */
4636 while (i < FIELD_LAST)
4638 message->header_fields[i] = fields[i];
4642 if (!_dbus_list_append (&loader->messages, message))
4644 _dbus_verbose ("Failed to append new message to loader queue\n");
4645 dbus_message_unref (message);
4649 _dbus_assert (_dbus_string_get_length (&message->header) == 0);
4650 _dbus_assert (_dbus_string_get_length (&message->body) == 0);
4652 _dbus_assert (_dbus_string_get_length (&loader->data) >=
4653 (header_len + body_len));
4655 if (!_dbus_string_move_len (&loader->data, 0, header_len, &message->header, 0))
4657 _dbus_verbose ("Failed to move header into new message\n");
4658 _dbus_list_remove_last (&loader->messages, message);
4659 dbus_message_unref (message);
4663 if (!_dbus_string_move_len (&loader->data, 0, body_len, &message->body, 0))
4667 _dbus_verbose ("Failed to move body into new message\n");
4669 /* put the header back, we'll try again later */
4670 result = _dbus_string_copy_len (&message->header, 0, header_len,
4672 _dbus_assert (result); /* because DBusString never reallocs smaller */
4674 _dbus_list_remove_last (&loader->messages, message);
4675 dbus_message_unref (message);
4679 _dbus_assert (_dbus_string_get_length (&message->header) == header_len);
4680 _dbus_assert (_dbus_string_get_length (&message->body) == body_len);
4682 /* Fill in caches (we checked the types of these fields
4685 message->reply_serial = get_uint_field (message,
4686 FIELD_REPLY_SERIAL);
4687 message->client_serial = get_uint_field (message,
4688 FIELD_CLIENT_SERIAL);
4690 _dbus_verbose ("Loaded message %p\n", message);
4700 * Peeks at first loaded message, returns #NULL if no messages have
4703 * @param loader the loader.
4704 * @returns the next message, or #NULL if none.
4707 _dbus_message_loader_peek_message (DBusMessageLoader *loader)
4709 if (loader->messages)
4710 return loader->messages->data;
4716 * Pops a loaded message (passing ownership of the message
4717 * to the caller). Returns #NULL if no messages have been
4720 * @param loader the loader.
4721 * @returns the next message, or #NULL if none.
4724 _dbus_message_loader_pop_message (DBusMessageLoader *loader)
4726 return _dbus_list_pop_first (&loader->messages);
4730 * Pops a loaded message inside a list link (passing ownership of the
4731 * message and link to the caller). Returns #NULL if no messages have
4734 * @param loader the loader.
4735 * @returns the next message link, or #NULL if none.
4738 _dbus_message_loader_pop_message_link (DBusMessageLoader *loader)
4740 return _dbus_list_pop_first_link (&loader->messages);
4744 * Returns a popped message link, used to undo a pop.
4746 * @param loader the loader
4747 * @param link the link with a message in it
4750 _dbus_message_loader_putback_message_link (DBusMessageLoader *loader,
4753 _dbus_list_prepend_link (&loader->messages, link);
4757 * Checks whether the loader is confused due to bad data.
4758 * If messages are received that are invalid, the
4759 * loader gets confused and gives up permanently.
4760 * This state is called "corrupted."
4762 * @param loader the loader
4763 * @returns #TRUE if the loader is hosed.
4766 _dbus_message_loader_get_is_corrupted (DBusMessageLoader *loader)
4768 return loader->corrupted;
4772 * Sets the maximum size message we allow.
4774 * @param loader the loader
4775 * @param size the max message size in bytes
4778 _dbus_message_loader_set_max_message_size (DBusMessageLoader *loader,
4781 if (size > MAX_SANE_MESSAGE_SIZE)
4783 _dbus_verbose ("clamping requested max message size %ld to %d\n",
4784 size, MAX_SANE_MESSAGE_SIZE);
4785 size = MAX_SANE_MESSAGE_SIZE;
4787 loader->max_message_size = size;
4791 * Gets the maximum allowed message size in bytes.
4793 * @param loader the loader
4794 * @returns max size in bytes
4797 _dbus_message_loader_get_max_message_size (DBusMessageLoader *loader)
4799 return loader->max_message_size;
4802 static DBusDataSlotAllocator slot_allocator;
4803 _DBUS_DEFINE_GLOBAL_LOCK (message_slots);
4806 * Allocates an integer ID to be used for storing application-specific
4807 * data on any DBusMessage. The allocated ID may then be used
4808 * with dbus_message_set_data() and dbus_message_get_data().
4809 * The passed-in slot must be initialized to -1, and is filled in
4810 * with the slot ID. If the passed-in slot is not -1, it's assumed
4811 * to be already allocated, and its refcount is incremented.
4813 * The allocated slot is global, i.e. all DBusMessage objects will
4814 * have a slot with the given integer ID reserved.
4816 * @param slot_p address of a global variable storing the slot
4817 * @returns #FALSE on failure (no memory)
4820 dbus_message_allocate_data_slot (dbus_int32_t *slot_p)
4822 return _dbus_data_slot_allocator_alloc (&slot_allocator,
4823 _DBUS_LOCK_NAME (message_slots),
4828 * Deallocates a global ID for message data slots.
4829 * dbus_message_get_data() and dbus_message_set_data() may no
4830 * longer be used with this slot. Existing data stored on existing
4831 * DBusMessage objects will be freed when the message is
4832 * finalized, but may not be retrieved (and may only be replaced if
4833 * someone else reallocates the slot). When the refcount on the
4834 * passed-in slot reaches 0, it is set to -1.
4836 * @param slot_p address storing the slot to deallocate
4839 dbus_message_free_data_slot (dbus_int32_t *slot_p)
4841 _dbus_return_if_fail (*slot_p >= 0);
4843 _dbus_data_slot_allocator_free (&slot_allocator, slot_p);
4847 * Stores a pointer on a DBusMessage, along
4848 * with an optional function to be used for freeing
4849 * the data when the data is set again, or when
4850 * the message is finalized. The slot number
4851 * must have been allocated with dbus_message_allocate_data_slot().
4853 * @param message the message
4854 * @param slot the slot number
4855 * @param data the data to store
4856 * @param free_data_func finalizer function for the data
4857 * @returns #TRUE if there was enough memory to store the data
4860 dbus_message_set_data (DBusMessage *message,
4863 DBusFreeFunction free_data_func)
4865 DBusFreeFunction old_free_func;
4869 _dbus_return_val_if_fail (message != NULL, FALSE);
4870 _dbus_return_val_if_fail (slot >= 0, FALSE);
4872 retval = _dbus_data_slot_list_set (&slot_allocator,
4873 &message->slot_list,
4874 slot, data, free_data_func,
4875 &old_free_func, &old_data);
4879 /* Do the actual free outside the message lock */
4881 (* old_free_func) (old_data);
4888 * Retrieves data previously set with dbus_message_set_data().
4889 * The slot must still be allocated (must not have been freed).
4891 * @param message the message
4892 * @param slot the slot to get data from
4893 * @returns the data, or #NULL if not found
4896 dbus_message_get_data (DBusMessage *message,
4901 _dbus_return_val_if_fail (message != NULL, NULL);
4903 res = _dbus_data_slot_list_get (&slot_allocator,
4904 &message->slot_list,
4911 #ifdef DBUS_BUILD_TESTS
4912 #include "dbus-test.h"
4916 message_iter_test (DBusMessage *message)
4918 DBusMessageIter iter, dict, array, array2;
4920 unsigned char *data;
4921 dbus_int32_t *our_int_array;
4924 dbus_message_iter_init (message, &iter);
4927 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_STRING)
4928 _dbus_assert_not_reached ("Argument type isn't string");
4930 str = dbus_message_iter_get_string (&iter);
4931 if (strcmp (str, "Test string") != 0)
4932 _dbus_assert_not_reached ("Strings differ");
4935 if (!dbus_message_iter_next (&iter))
4936 _dbus_assert_not_reached ("Reached end of arguments");
4938 /* Signed integer tests */
4939 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_INT32)
4940 _dbus_assert_not_reached ("Argument type isn't int32");
4942 if (dbus_message_iter_get_int32 (&iter) != -0x12345678)
4943 _dbus_assert_not_reached ("Signed integers differ");
4945 if (!dbus_message_iter_next (&iter))
4946 _dbus_assert_not_reached ("Reached end of fields");
4948 /* Unsigned integer tests */
4949 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_UINT32)
4950 _dbus_assert_not_reached ("Argument type isn't int32");
4952 if (dbus_message_iter_get_uint32 (&iter) != 0xedd1e)
4953 _dbus_assert_not_reached ("Unsigned integers differ");
4955 if (!dbus_message_iter_next (&iter))
4956 _dbus_assert_not_reached ("Reached end of arguments");
4959 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DOUBLE)
4960 _dbus_assert_not_reached ("Argument type isn't double");
4962 if (dbus_message_iter_get_double (&iter) != 3.14159)
4963 _dbus_assert_not_reached ("Doubles differ");
4965 if (!dbus_message_iter_next (&iter))
4966 _dbus_assert_not_reached ("Reached end of arguments");
4968 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_ARRAY)
4969 _dbus_assert_not_reached ("Argument type not an array");
4971 if (dbus_message_iter_get_array_type (&iter) != DBUS_TYPE_DOUBLE)
4972 _dbus_assert_not_reached ("Array type not double");
4975 if (!dbus_message_iter_init_array_iterator (&iter, &array, NULL))
4976 _dbus_assert_not_reached ("Array init failed");
4978 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_DOUBLE)
4979 _dbus_assert_not_reached ("Argument type isn't double");
4981 if (dbus_message_iter_get_double (&array) != 1.5)
4982 _dbus_assert_not_reached ("Unsigned integers differ");
4984 if (!dbus_message_iter_next (&array))
4985 _dbus_assert_not_reached ("Reached end of arguments");
4987 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_DOUBLE)
4988 _dbus_assert_not_reached ("Argument type isn't double");
4990 if (dbus_message_iter_get_double (&array) != 2.5)
4991 _dbus_assert_not_reached ("Unsigned integers differ");
4993 if (dbus_message_iter_next (&array))
4994 _dbus_assert_not_reached ("Didn't reach end of arguments");
4996 if (!dbus_message_iter_next (&iter))
4997 _dbus_assert_not_reached ("Reached end of arguments");
5002 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DICT)
5003 _dbus_assert_not_reached ("not dict type");
5005 if (!dbus_message_iter_init_dict_iterator (&iter, &dict))
5006 _dbus_assert_not_reached ("dict iter failed");
5008 str = dbus_message_iter_get_dict_key (&dict);
5009 if (str == NULL || strcmp (str, "test") != 0)
5010 _dbus_assert_not_reached ("wrong dict key");
5013 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_UINT32)
5014 _dbus_assert_not_reached ("wrong dict entry type");
5016 if (dbus_message_iter_get_uint32 (&dict) != 0xDEADBEEF)
5017 _dbus_assert_not_reached ("wrong dict entry value");
5019 if (!dbus_message_iter_next (&dict))
5020 _dbus_assert_not_reached ("reached end of dict");
5022 /* array of array of int32 (in dict) */
5024 str = dbus_message_iter_get_dict_key (&dict);
5025 if (str == NULL || strcmp (str, "array") != 0)
5026 _dbus_assert_not_reached ("wrong dict key");
5029 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_ARRAY)
5030 _dbus_assert_not_reached ("Argument type not an array");
5032 if (dbus_message_iter_get_array_type (&dict) != DBUS_TYPE_ARRAY)
5033 _dbus_assert_not_reached ("Array type not array");
5035 if (!dbus_message_iter_init_array_iterator (&dict, &array, NULL))
5036 _dbus_assert_not_reached ("Array init failed");
5038 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_ARRAY)
5039 _dbus_assert_not_reached ("Argument type isn't array");
5041 if (dbus_message_iter_get_array_type (&array) != DBUS_TYPE_INT32)
5042 _dbus_assert_not_reached ("Array type not int32");
5044 if (!dbus_message_iter_init_array_iterator (&array, &array2, NULL))
5045 _dbus_assert_not_reached ("Array init failed");
5047 if (dbus_message_iter_get_arg_type (&array2) != DBUS_TYPE_INT32)
5048 _dbus_assert_not_reached ("Argument type isn't int32");
5050 if (dbus_message_iter_get_int32 (&array2) != 0x12345678)
5051 _dbus_assert_not_reached ("Signed integers differ");
5053 if (!dbus_message_iter_next (&array2))
5054 _dbus_assert_not_reached ("Reached end of arguments");
5056 if (dbus_message_iter_get_int32 (&array2) != 0x23456781)
5057 _dbus_assert_not_reached ("Signed integers differ");
5059 if (dbus_message_iter_next (&array2))
5060 _dbus_assert_not_reached ("Didn't reached end of arguments");
5062 if (!dbus_message_iter_next (&array))
5063 _dbus_assert_not_reached ("Reached end of arguments");
5065 if (dbus_message_iter_get_array_type (&array) != DBUS_TYPE_INT32)
5066 _dbus_assert_not_reached ("Array type not int32");
5068 if (!dbus_message_iter_get_int32_array (&array,
5071 _dbus_assert_not_reached ("couldn't get int32 array");
5073 _dbus_assert (len == 3);
5074 _dbus_assert (our_int_array[0] == 0x34567812 &&
5075 our_int_array[1] == 0x45678123 &&
5076 our_int_array[2] == 0x56781234);
5077 dbus_free (our_int_array);
5079 if (dbus_message_iter_next (&array))
5080 _dbus_assert_not_reached ("Didn't reach end of array");
5082 if (dbus_message_iter_next (&dict))
5083 _dbus_assert_not_reached ("Didn't reach end of dict");
5085 if (!dbus_message_iter_next (&iter))
5086 _dbus_assert_not_reached ("Reached end of arguments");
5088 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_BYTE)
5090 _dbus_warn ("type was: %d\n", dbus_message_iter_get_arg_type (&iter));
5091 _dbus_assert_not_reached ("wrong type after dict (should be byte)");
5094 if (dbus_message_iter_get_byte (&iter) != 0xF0)
5095 _dbus_assert_not_reached ("wrong value after dict");
5098 if (!dbus_message_iter_next (&iter))
5099 _dbus_assert_not_reached ("Reached end of arguments");
5101 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_NIL)
5102 _dbus_assert_not_reached ("not a nil type");
5104 if (!dbus_message_iter_next (&iter))
5105 _dbus_assert_not_reached ("Reached end of arguments");
5107 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_NAMED)
5108 _dbus_assert_not_reached ("wrong type after dict");
5110 if (!dbus_message_iter_get_named (&iter, &str, &data, &len))
5111 _dbus_assert_not_reached ("failed to get named");
5113 _dbus_assert (strcmp (str, "named")==0);
5114 _dbus_assert (len == 5);
5115 _dbus_assert (strcmp (data, "data")==0);
5119 if (dbus_message_iter_next (&iter))
5120 _dbus_assert_not_reached ("Didn't reach end of arguments");
5125 check_message_handling_type (DBusMessageIter *iter,
5128 DBusMessageIter child_iter;
5134 case DBUS_TYPE_BYTE:
5135 dbus_message_iter_get_byte (iter);
5137 case DBUS_TYPE_BOOLEAN:
5138 dbus_message_iter_get_boolean (iter);
5140 case DBUS_TYPE_INT32:
5141 dbus_message_iter_get_int32 (iter);
5143 case DBUS_TYPE_UINT32:
5144 dbus_message_iter_get_uint32 (iter);
5146 case DBUS_TYPE_INT64:
5147 #ifdef DBUS_HAVE_INT64
5148 dbus_message_iter_get_int64 (iter);
5151 case DBUS_TYPE_UINT64:
5152 #ifdef DBUS_HAVE_INT64
5153 dbus_message_iter_get_uint64 (iter);
5156 case DBUS_TYPE_DOUBLE:
5157 dbus_message_iter_get_double (iter);
5159 case DBUS_TYPE_STRING:
5162 str = dbus_message_iter_get_string (iter);
5165 _dbus_warn ("NULL string in message\n");
5171 case DBUS_TYPE_NAMED:
5174 unsigned char *data;
5177 if (!dbus_message_iter_get_named (iter, &name, &data, &len))
5179 _dbus_warn ("error reading name from named type\n");
5186 case DBUS_TYPE_ARRAY:
5190 if (!dbus_message_iter_init_array_iterator (iter, &child_iter, &array_type))
5192 _dbus_warn ("Failed to init array iterator\n");
5196 while (dbus_message_iter_has_next (&child_iter))
5198 if (!check_message_handling_type (&child_iter, array_type))
5200 _dbus_warn ("error in array element\n");
5204 if (!dbus_message_iter_next (&child_iter))
5209 case DBUS_TYPE_DICT:
5214 if (!dbus_message_iter_init_dict_iterator (iter, &child_iter))
5216 _dbus_warn ("Failed to init dict iterator\n");
5220 while ((entry_type = dbus_message_iter_get_arg_type (&child_iter)) != DBUS_TYPE_INVALID)
5222 key = dbus_message_iter_get_dict_key (&child_iter);
5225 _dbus_warn ("error reading dict key\n");
5230 if (!check_message_handling_type (&child_iter, entry_type))
5232 _dbus_warn ("error in dict value\n");
5236 if (!dbus_message_iter_next (&child_iter))
5243 _dbus_warn ("unknown type %d\n", type);
5252 check_message_handling (DBusMessage *message)
5254 DBusMessageIter iter;
5257 dbus_uint32_t client_serial;
5261 client_serial = dbus_message_get_serial (message);
5263 /* can't use set_serial due to the assertions at the start of it */
5264 set_uint_field (message, FIELD_CLIENT_SERIAL,
5267 if (client_serial != dbus_message_get_serial (message))
5269 _dbus_warn ("get/set cycle for client_serial did not succeed\n");
5273 /* If we implement message_set_arg (message, n, value)
5274 * then we would want to test it here
5277 dbus_message_iter_init (message, &iter);
5278 while ((type = dbus_message_iter_get_arg_type (&iter)) != DBUS_TYPE_INVALID)
5280 if (!check_message_handling_type (&iter, type))
5283 if (!dbus_message_iter_next (&iter))
5294 check_have_valid_message (DBusMessageLoader *loader)
5296 DBusMessage *message;
5302 if (!_dbus_message_loader_queue_messages (loader))
5303 _dbus_assert_not_reached ("no memory to queue messages");
5305 if (_dbus_message_loader_get_is_corrupted (loader))
5307 _dbus_warn ("loader corrupted on message that was expected to be valid\n");
5311 message = _dbus_message_loader_pop_message (loader);
5312 if (message == NULL)
5314 _dbus_warn ("didn't load message that was expected to be valid (message not popped)\n");
5318 if (_dbus_string_get_length (&loader->data) > 0)
5320 _dbus_warn ("had leftover bytes from expected-to-be-valid single message\n");
5324 /* Verify that we're able to properly deal with the message.
5325 * For example, this would detect improper handling of messages
5326 * in nonstandard byte order.
5328 if (!check_message_handling (message))
5335 dbus_message_unref (message);
5341 check_invalid_message (DBusMessageLoader *loader)
5347 if (!_dbus_message_loader_queue_messages (loader))
5348 _dbus_assert_not_reached ("no memory to queue messages");
5350 if (!_dbus_message_loader_get_is_corrupted (loader))
5352 _dbus_warn ("loader not corrupted on message that was expected to be invalid\n");
5363 check_incomplete_message (DBusMessageLoader *loader)
5365 DBusMessage *message;
5371 if (!_dbus_message_loader_queue_messages (loader))
5372 _dbus_assert_not_reached ("no memory to queue messages");
5374 if (_dbus_message_loader_get_is_corrupted (loader))
5376 _dbus_warn ("loader corrupted on message that was expected to be valid (but incomplete)\n");
5380 message = _dbus_message_loader_pop_message (loader);
5381 if (message != NULL)
5383 _dbus_warn ("loaded message that was expected to be incomplete\n");
5391 dbus_message_unref (message);
5396 check_loader_results (DBusMessageLoader *loader,
5397 DBusMessageValidity validity)
5399 if (!_dbus_message_loader_queue_messages (loader))
5400 _dbus_assert_not_reached ("no memory to queue messages");
5404 case _DBUS_MESSAGE_VALID:
5405 return check_have_valid_message (loader);
5406 case _DBUS_MESSAGE_INVALID:
5407 return check_invalid_message (loader);
5408 case _DBUS_MESSAGE_INCOMPLETE:
5409 return check_incomplete_message (loader);
5410 case _DBUS_MESSAGE_UNKNOWN:
5414 _dbus_assert_not_reached ("bad DBusMessageValidity");
5420 * Loads the message in the given message file.
5422 * @param filename filename to load
5423 * @param is_raw if #TRUE load as binary data, if #FALSE as message builder language
5424 * @param data string to load message into
5425 * @returns #TRUE if the message was loaded
5428 dbus_internal_do_not_use_load_message_file (const DBusString *filename,
5440 _dbus_verbose ("Loading raw %s\n", _dbus_string_get_const_data (filename));
5441 dbus_error_init (&error);
5442 if (!_dbus_file_get_contents (data, filename, &error))
5444 _dbus_warn ("Could not load message file %s: %s\n",
5445 _dbus_string_get_const_data (filename),
5447 dbus_error_free (&error);
5453 if (!_dbus_message_data_load (data, filename))
5455 _dbus_warn ("Could not load message file %s\n",
5456 _dbus_string_get_const_data (filename));
5469 * Tries loading the message in the given message file
5470 * and verifies that DBusMessageLoader can handle it.
5472 * @param filename filename to load
5473 * @param is_raw if #TRUE load as binary data, if #FALSE as message builder language
5474 * @param expected_validity what the message has to be like to return #TRUE
5475 * @returns #TRUE if the message has the expected validity
5478 dbus_internal_do_not_use_try_message_file (const DBusString *filename,
5480 DBusMessageValidity expected_validity)
5487 if (!_dbus_string_init (&data))
5488 _dbus_assert_not_reached ("could not allocate string\n");
5490 if (!dbus_internal_do_not_use_load_message_file (filename, is_raw,
5494 retval = dbus_internal_do_not_use_try_message_data (&data, expected_validity);
5500 if (_dbus_string_get_length (&data) > 0)
5501 _dbus_verbose_bytes_of_string (&data, 0,
5502 _dbus_string_get_length (&data));
5504 _dbus_warn ("Failed message loader test on %s\n",
5505 _dbus_string_get_const_data (filename));
5508 _dbus_string_free (&data);
5514 * Tries loading the given message data.
5517 * @param data the message data
5518 * @param expected_validity what the message has to be like to return #TRUE
5519 * @returns #TRUE if the message has the expected validity
5522 dbus_internal_do_not_use_try_message_data (const DBusString *data,
5523 DBusMessageValidity expected_validity)
5525 DBusMessageLoader *loader;
5533 /* Write the data one byte at a time */
5535 loader = _dbus_message_loader_new ();
5537 /* check some trivial loader functions */
5538 _dbus_message_loader_ref (loader);
5539 _dbus_message_loader_unref (loader);
5540 _dbus_message_loader_get_max_message_size (loader);
5542 len = _dbus_string_get_length (data);
5543 for (i = 0; i < len; i++)
5547 _dbus_message_loader_get_buffer (loader, &buffer);
5548 _dbus_string_append_byte (buffer,
5549 _dbus_string_get_byte (data, i));
5550 _dbus_message_loader_return_buffer (loader, buffer, 1);
5553 if (!check_loader_results (loader, expected_validity))
5556 _dbus_message_loader_unref (loader);
5559 /* Write the data all at once */
5561 loader = _dbus_message_loader_new ();
5566 _dbus_message_loader_get_buffer (loader, &buffer);
5567 _dbus_string_copy (data, 0, buffer,
5568 _dbus_string_get_length (buffer));
5569 _dbus_message_loader_return_buffer (loader, buffer, 1);
5572 if (!check_loader_results (loader, expected_validity))
5575 _dbus_message_loader_unref (loader);
5578 /* Write the data 2 bytes at a time */
5580 loader = _dbus_message_loader_new ();
5582 len = _dbus_string_get_length (data);
5583 for (i = 0; i < len; i += 2)
5587 _dbus_message_loader_get_buffer (loader, &buffer);
5588 _dbus_string_append_byte (buffer,
5589 _dbus_string_get_byte (data, i));
5591 _dbus_string_append_byte (buffer,
5592 _dbus_string_get_byte (data, i+1));
5593 _dbus_message_loader_return_buffer (loader, buffer, 1);
5596 if (!check_loader_results (loader, expected_validity))
5599 _dbus_message_loader_unref (loader);
5607 _dbus_message_loader_unref (loader);
5613 process_test_subdir (const DBusString *test_base_dir,
5615 DBusMessageValidity validity,
5616 DBusForeachMessageFileFunc function,
5619 DBusString test_directory;
5620 DBusString filename;
5628 if (!_dbus_string_init (&test_directory))
5629 _dbus_assert_not_reached ("didn't allocate test_directory\n");
5631 _dbus_string_init_const (&filename, subdir);
5633 if (!_dbus_string_copy (test_base_dir, 0,
5634 &test_directory, 0))
5635 _dbus_assert_not_reached ("couldn't copy test_base_dir to test_directory");
5637 if (!_dbus_concat_dir_and_file (&test_directory, &filename))
5638 _dbus_assert_not_reached ("couldn't allocate full path");
5640 _dbus_string_free (&filename);
5641 if (!_dbus_string_init (&filename))
5642 _dbus_assert_not_reached ("didn't allocate filename string\n");
5644 dbus_error_init (&error);
5645 dir = _dbus_directory_open (&test_directory, &error);
5648 _dbus_warn ("Could not open %s: %s\n",
5649 _dbus_string_get_const_data (&test_directory),
5651 dbus_error_free (&error);
5655 printf ("Testing:\n");
5658 while (_dbus_directory_get_next_file (dir, &filename, &error))
5660 DBusString full_path;
5663 if (!_dbus_string_init (&full_path))
5664 _dbus_assert_not_reached ("couldn't init string");
5666 if (!_dbus_string_copy (&test_directory, 0, &full_path, 0))
5667 _dbus_assert_not_reached ("couldn't copy dir to full_path");
5669 if (!_dbus_concat_dir_and_file (&full_path, &filename))
5670 _dbus_assert_not_reached ("couldn't concat file to dir");
5672 if (_dbus_string_ends_with_c_str (&filename, ".message"))
5674 else if (_dbus_string_ends_with_c_str (&filename, ".message-raw"))
5678 _dbus_verbose ("Skipping non-.message file %s\n",
5679 _dbus_string_get_const_data (&filename));
5680 _dbus_string_free (&full_path);
5685 _dbus_string_get_const_data (&filename));
5687 _dbus_verbose (" expecting %s\n",
5688 validity == _DBUS_MESSAGE_VALID ? "valid" :
5689 (validity == _DBUS_MESSAGE_INVALID ? "invalid" :
5690 (validity == _DBUS_MESSAGE_INCOMPLETE ? "incomplete" : "unknown")));
5692 if (! (*function) (&full_path, is_raw, validity, user_data))
5694 _dbus_string_free (&full_path);
5698 _dbus_string_free (&full_path);
5701 if (dbus_error_is_set (&error))
5703 _dbus_warn ("Could not get next file in %s: %s\n",
5704 _dbus_string_get_const_data (&test_directory),
5706 dbus_error_free (&error);
5715 _dbus_directory_close (dir);
5716 _dbus_string_free (&test_directory);
5717 _dbus_string_free (&filename);
5723 * Runs the given function on every message file in the test suite.
5724 * The function should return #FALSE on test failure or fatal error.
5726 * @param test_data_dir root dir of the test suite data files (top_srcdir/test/data)
5727 * @param func the function to run
5728 * @param user_data data for function
5729 * @returns #FALSE if there's a failure
5732 dbus_internal_do_not_use_foreach_message_file (const char *test_data_dir,
5733 DBusForeachMessageFileFunc func,
5736 DBusString test_directory;
5741 _dbus_string_init_const (&test_directory, test_data_dir);
5743 if (!process_test_subdir (&test_directory, "valid-messages",
5744 _DBUS_MESSAGE_VALID, func, user_data))
5747 if (!process_test_subdir (&test_directory, "invalid-messages",
5748 _DBUS_MESSAGE_INVALID, func, user_data))
5751 if (!process_test_subdir (&test_directory, "incomplete-messages",
5752 _DBUS_MESSAGE_INCOMPLETE, func, user_data))
5759 _dbus_string_free (&test_directory);
5765 verify_test_message (DBusMessage *message)
5767 DBusMessageIter iter, dict;
5769 dbus_int32_t our_int;
5772 dbus_bool_t our_bool;
5773 dbus_uint32_t our_uint32;
5774 dbus_int32_t *our_uint32_array;
5775 int our_uint32_array_len;
5776 dbus_int32_t *our_int32_array;
5777 int our_int32_array_len;
5778 char **our_string_array;
5779 int our_string_array_len;
5780 #ifdef DBUS_HAVE_INT64
5781 dbus_int64_t our_int64;
5782 dbus_uint64_t our_uint64;
5783 dbus_int64_t *our_uint64_array;
5784 int our_uint64_array_len;
5785 dbus_int64_t *our_int64_array;
5786 int our_int64_array_len;
5788 double *our_double_array;
5789 int our_double_array_len;
5790 unsigned char *our_byte_array;
5791 int our_byte_array_len;
5792 unsigned char *our_boolean_array;
5793 int our_boolean_array_len;
5795 dbus_message_iter_init (message, &iter);
5797 dbus_error_init (&error);
5798 if (!dbus_message_iter_get_args (&iter, &error,
5799 DBUS_TYPE_INT32, &our_int,
5800 #ifdef DBUS_HAVE_INT64
5801 DBUS_TYPE_INT64, &our_int64,
5802 DBUS_TYPE_UINT64, &our_uint64,
5804 DBUS_TYPE_STRING, &our_str,
5805 DBUS_TYPE_DOUBLE, &our_double,
5806 DBUS_TYPE_BOOLEAN, &our_bool,
5807 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32,
5808 &our_uint32_array, &our_uint32_array_len,
5809 DBUS_TYPE_ARRAY, DBUS_TYPE_INT32,
5810 &our_int32_array, &our_int32_array_len,
5811 #ifdef DBUS_HAVE_INT64
5812 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT64,
5813 &our_uint64_array, &our_uint64_array_len,
5814 DBUS_TYPE_ARRAY, DBUS_TYPE_INT64,
5815 &our_int64_array, &our_int64_array_len,
5817 DBUS_TYPE_ARRAY, DBUS_TYPE_STRING,
5818 &our_string_array, &our_string_array_len,
5819 DBUS_TYPE_ARRAY, DBUS_TYPE_DOUBLE,
5820 &our_double_array, &our_double_array_len,
5821 DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE,
5822 &our_byte_array, &our_byte_array_len,
5823 DBUS_TYPE_ARRAY, DBUS_TYPE_BOOLEAN,
5824 &our_boolean_array, &our_boolean_array_len,
5827 _dbus_warn ("error: %s - %s\n", error.name,
5828 (error.message != NULL) ? error.message : "no message");
5829 _dbus_assert_not_reached ("Could not get arguments");
5832 if (our_int != -0x12345678)
5833 _dbus_assert_not_reached ("integers differ!");
5835 #ifdef DBUS_HAVE_INT64
5836 if (our_int64 != -0x123456789abcd)
5837 _dbus_assert_not_reached ("64-bit integers differ!");
5838 if (our_uint64 != 0x123456789abcd)
5839 _dbus_assert_not_reached ("64-bit unsigned integers differ!");
5842 if (our_double != 3.14159)
5843 _dbus_assert_not_reached ("doubles differ!");
5845 if (strcmp (our_str, "Test string") != 0)
5846 _dbus_assert_not_reached ("strings differ!");
5847 dbus_free (our_str);
5850 _dbus_assert_not_reached ("booleans differ");
5852 if (our_uint32_array_len != 4 ||
5853 our_uint32_array[0] != 0x12345678 ||
5854 our_uint32_array[1] != 0x23456781 ||
5855 our_uint32_array[2] != 0x34567812 ||
5856 our_uint32_array[3] != 0x45678123)
5857 _dbus_assert_not_reached ("uint array differs");
5858 dbus_free (our_uint32_array);
5860 if (our_int32_array_len != 4 ||
5861 our_int32_array[0] != 0x12345678 ||
5862 our_int32_array[1] != -0x23456781 ||
5863 our_int32_array[2] != 0x34567812 ||
5864 our_int32_array[3] != -0x45678123)
5865 _dbus_assert_not_reached ("int array differs");
5866 dbus_free (our_int32_array);
5868 #ifdef DBUS_HAVE_INT64
5869 if (our_uint64_array_len != 4 ||
5870 our_uint64_array[0] != 0x12345678 ||
5871 our_uint64_array[1] != 0x23456781 ||
5872 our_uint64_array[2] != 0x34567812 ||
5873 our_uint64_array[3] != 0x45678123)
5874 _dbus_assert_not_reached ("uint64 array differs");
5875 dbus_free (our_uint64_array);
5877 if (our_int64_array_len != 4 ||
5878 our_int64_array[0] != 0x12345678 ||
5879 our_int64_array[1] != -0x23456781 ||
5880 our_int64_array[2] != 0x34567812 ||
5881 our_int64_array[3] != -0x45678123)
5882 _dbus_assert_not_reached ("int64 array differs");
5883 dbus_free (our_int64_array);
5884 #endif /* DBUS_HAVE_INT64 */
5886 if (our_string_array_len != 4)
5887 _dbus_assert_not_reached ("string array has wrong length");
5889 if (strcmp (our_string_array[0], "Foo") != 0 ||
5890 strcmp (our_string_array[1], "bar") != 0 ||
5891 strcmp (our_string_array[2], "") != 0 ||
5892 strcmp (our_string_array[3], "woo woo woo woo") != 0)
5893 _dbus_assert_not_reached ("string array differs");
5895 dbus_free_string_array (our_string_array);
5897 if (our_double_array_len != 3)
5898 _dbus_assert_not_reached ("double array had wrong length");
5900 /* On all IEEE machines (i.e. everything sane) exact equality
5901 * should be preserved over the wire
5903 if (our_double_array[0] != 0.1234 ||
5904 our_double_array[1] != 9876.54321 ||
5905 our_double_array[2] != -300.0)
5906 _dbus_assert_not_reached ("double array had wrong values");
5908 dbus_free (our_double_array);
5910 if (our_byte_array_len != 4)
5911 _dbus_assert_not_reached ("byte array had wrong length");
5913 if (our_byte_array[0] != 'a' ||
5914 our_byte_array[1] != 'b' ||
5915 our_byte_array[2] != 'c' ||
5916 our_byte_array[3] != 234)
5917 _dbus_assert_not_reached ("byte array had wrong values");
5919 dbus_free (our_byte_array);
5921 if (our_boolean_array_len != 5)
5922 _dbus_assert_not_reached ("bool array had wrong length");
5924 if (our_boolean_array[0] != TRUE ||
5925 our_boolean_array[1] != FALSE ||
5926 our_boolean_array[2] != TRUE ||
5927 our_boolean_array[3] != TRUE ||
5928 our_boolean_array[4] != FALSE)
5929 _dbus_assert_not_reached ("bool array had wrong values");
5931 dbus_free (our_boolean_array);
5933 if (!dbus_message_iter_next (&iter))
5934 _dbus_assert_not_reached ("Reached end of arguments");
5936 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DICT)
5937 _dbus_assert_not_reached ("not dict type");
5939 if (!dbus_message_iter_init_dict_iterator (&iter, &dict))
5940 _dbus_assert_not_reached ("dict iter failed");
5942 our_str = dbus_message_iter_get_dict_key (&dict);
5943 if (our_str == NULL || strcmp (our_str, "test") != 0)
5944 _dbus_assert_not_reached ("wrong dict key");
5945 dbus_free (our_str);
5947 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_UINT32)
5949 _dbus_verbose ("dict entry type: %d\n", dbus_message_iter_get_arg_type (&dict));
5950 _dbus_assert_not_reached ("wrong dict entry type");
5953 if ((our_uint32 = dbus_message_iter_get_uint32 (&dict)) != 0xDEADBEEF)
5955 _dbus_verbose ("dict entry val: %x\n", our_uint32);
5956 _dbus_assert_not_reached ("wrong dict entry value");
5959 if (dbus_message_iter_next (&dict))
5960 _dbus_assert_not_reached ("Didn't reach end of dict");
5962 if (!dbus_message_iter_next (&iter))
5963 _dbus_assert_not_reached ("Reached end of arguments");
5965 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_UINT32)
5966 _dbus_assert_not_reached ("wrong type after dict");
5968 if (dbus_message_iter_get_uint32 (&iter) != 0xCAFEBABE)
5969 _dbus_assert_not_reached ("wrong value after dict");
5971 if (dbus_message_iter_next (&iter))
5972 _dbus_assert_not_reached ("Didn't reach end of arguments");
5976 * @ingroup DBusMessageInternals
5977 * Unit test for DBusMessage.
5979 * @returns #TRUE on success.
5982 _dbus_message_test (const char *test_data_dir)
5984 DBusMessage *message;
5985 DBusMessageLoader *loader;
5986 DBusMessageIter iter, child_iter, child_iter2, child_iter3;
5992 const dbus_uint32_t our_uint32_array[] =
5993 { 0x12345678, 0x23456781, 0x34567812, 0x45678123 };
5994 const dbus_uint32_t our_int32_array[] =
5995 { 0x12345678, -0x23456781, 0x34567812, -0x45678123 };
5996 #ifdef DBUS_HAVE_INT64
5997 const dbus_uint64_t our_uint64_array[] =
5998 { 0x12345678, 0x23456781, 0x34567812, 0x45678123 };
5999 const dbus_uint64_t our_int64_array[] =
6000 { 0x12345678, -0x23456781, 0x34567812, -0x45678123 };
6002 const char *our_string_array[] = { "Foo", "bar", "", "woo woo woo woo" };
6003 const double our_double_array[] = { 0.1234, 9876.54321, -300.0 };
6004 const unsigned char our_byte_array[] = { 'a', 'b', 'c', 234 };
6005 const unsigned char our_boolean_array[] = { TRUE, FALSE, TRUE, TRUE, FALSE };
6007 _dbus_assert (sizeof (DBusMessageRealIter) <= sizeof (DBusMessageIter));
6009 message = dbus_message_new_method_call ("test.Message", "org.freedesktop.DBus.Test");
6010 _dbus_assert (dbus_message_has_destination (message, "org.freedesktop.DBus.Test"));
6011 _dbus_message_set_serial (message, 1234);
6012 dbus_message_set_sender (message, "org.foo.bar");
6013 _dbus_assert (dbus_message_has_sender (message, "org.foo.bar"));
6014 dbus_message_set_sender (message, NULL);
6015 _dbus_assert (!dbus_message_has_sender (message, "org.foo.bar"));
6016 _dbus_assert (dbus_message_get_serial (message) == 1234);
6017 _dbus_assert (dbus_message_has_destination (message, "org.freedesktop.DBus.Test"));
6019 _dbus_assert (dbus_message_get_no_reply (message) == FALSE);
6020 dbus_message_set_no_reply (message, TRUE);
6021 _dbus_assert (dbus_message_get_no_reply (message) == TRUE);
6022 dbus_message_set_no_reply (message, FALSE);
6023 _dbus_assert (dbus_message_get_no_reply (message) == FALSE);
6025 dbus_message_unref (message);
6027 /* Test the vararg functions */
6028 message = dbus_message_new_method_call ("test.Message", "org.freedesktop.DBus.Test");
6029 _dbus_message_set_serial (message, 1);
6030 dbus_message_append_args (message,
6031 DBUS_TYPE_INT32, -0x12345678,
6032 #ifdef DBUS_HAVE_INT64
6033 DBUS_TYPE_INT64, -0x123456789abcd,
6034 DBUS_TYPE_UINT64, 0x123456789abcd,
6036 DBUS_TYPE_STRING, "Test string",
6037 DBUS_TYPE_DOUBLE, 3.14159,
6038 DBUS_TYPE_BOOLEAN, TRUE,
6039 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, our_uint32_array,
6040 _DBUS_N_ELEMENTS (our_uint32_array),
6041 DBUS_TYPE_ARRAY, DBUS_TYPE_INT32, our_int32_array,
6042 _DBUS_N_ELEMENTS (our_int32_array),
6043 #ifdef DBUS_HAVE_INT64
6044 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT64, our_uint64_array,
6045 _DBUS_N_ELEMENTS (our_uint64_array),
6046 DBUS_TYPE_ARRAY, DBUS_TYPE_INT64, our_int64_array,
6047 _DBUS_N_ELEMENTS (our_int64_array),
6049 DBUS_TYPE_ARRAY, DBUS_TYPE_STRING, our_string_array,
6050 _DBUS_N_ELEMENTS (our_string_array),
6051 DBUS_TYPE_ARRAY, DBUS_TYPE_DOUBLE, our_double_array,
6052 _DBUS_N_ELEMENTS (our_double_array),
6053 DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, our_byte_array,
6054 _DBUS_N_ELEMENTS (our_byte_array),
6055 DBUS_TYPE_ARRAY, DBUS_TYPE_BOOLEAN, our_boolean_array,
6056 _DBUS_N_ELEMENTS (our_boolean_array),
6059 dbus_message_append_iter_init (message, &iter);
6060 dbus_message_iter_append_dict (&iter, &child_iter);
6061 dbus_message_iter_append_dict_key (&child_iter, "test");
6062 dbus_message_iter_append_uint32 (&child_iter, 0xDEADBEEF);
6063 dbus_message_iter_append_uint32 (&iter, 0xCAFEBABE);
6065 _dbus_verbose_bytes_of_string (&message->header, 0,
6066 _dbus_string_get_length (&message->header));
6067 _dbus_verbose_bytes_of_string (&message->body, 0,
6068 _dbus_string_get_length (&message->body));
6070 verify_test_message (message);
6072 copy = dbus_message_copy (message);
6074 _dbus_assert (message->client_serial == copy->client_serial);
6075 _dbus_assert (message->reply_serial == copy->reply_serial);
6076 _dbus_assert (message->header_padding == copy->header_padding);
6078 _dbus_assert (_dbus_string_get_length (&message->header) ==
6079 _dbus_string_get_length (©->header));
6081 _dbus_assert (_dbus_string_get_length (&message->body) ==
6082 _dbus_string_get_length (©->body));
6084 verify_test_message (copy);
6086 name1 = dbus_message_get_name (message);
6087 name2 = dbus_message_get_name (copy);
6089 _dbus_assert (strcmp (name1, name2) == 0);
6091 dbus_message_unref (message);
6092 dbus_message_unref (copy);
6094 message = dbus_message_new_method_call ("test.Message", "org.freedesktop.DBus.Test");
6095 _dbus_message_set_serial (message, 1);
6096 dbus_message_set_reply_serial (message, 0x12345678);
6098 dbus_message_append_iter_init (message, &iter);
6099 dbus_message_iter_append_string (&iter, "Test string");
6100 dbus_message_iter_append_int32 (&iter, -0x12345678);
6101 dbus_message_iter_append_uint32 (&iter, 0xedd1e);
6102 dbus_message_iter_append_double (&iter, 3.14159);
6104 dbus_message_iter_append_array (&iter, &child_iter, DBUS_TYPE_DOUBLE);
6105 dbus_message_iter_append_double (&child_iter, 1.5);
6106 dbus_message_iter_append_double (&child_iter, 2.5);
6109 dbus_message_iter_append_dict (&iter, &child_iter);
6110 dbus_message_iter_append_dict_key (&child_iter, "test");
6111 dbus_message_iter_append_uint32 (&child_iter, 0xDEADBEEF);
6113 /* array of array of int32 (in dict) */
6114 dbus_message_iter_append_dict_key (&child_iter, "array");
6115 dbus_message_iter_append_array (&child_iter, &child_iter2, DBUS_TYPE_ARRAY);
6116 dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_INT32);
6117 dbus_message_iter_append_int32 (&child_iter3, 0x12345678);
6118 dbus_message_iter_append_int32 (&child_iter3, 0x23456781);
6119 _dbus_warn ("next call expected to fail with wrong array type\n");
6120 _dbus_assert (!dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_UINT32));
6121 dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_INT32);
6122 dbus_message_iter_append_int32 (&child_iter3, 0x34567812);
6123 dbus_message_iter_append_int32 (&child_iter3, 0x45678123);
6124 dbus_message_iter_append_int32 (&child_iter3, 0x56781234);
6126 dbus_message_iter_append_byte (&iter, 0xF0);
6128 dbus_message_iter_append_nil (&iter);
6130 dbus_message_iter_append_named (&iter, "named",
6133 message_iter_test (message);
6135 /* Message loader test */
6136 _dbus_message_lock (message);
6137 loader = _dbus_message_loader_new ();
6139 /* check ref/unref */
6140 _dbus_message_loader_ref (loader);
6141 _dbus_message_loader_unref (loader);
6143 /* Write the header data one byte at a time */
6144 data = _dbus_string_get_const_data (&message->header);
6145 for (i = 0; i < _dbus_string_get_length (&message->header); i++)
6149 _dbus_message_loader_get_buffer (loader, &buffer);
6150 _dbus_string_append_byte (buffer, data[i]);
6151 _dbus_message_loader_return_buffer (loader, buffer, 1);
6154 /* Write the body data one byte at a time */
6155 data = _dbus_string_get_const_data (&message->body);
6156 for (i = 0; i < _dbus_string_get_length (&message->body); i++)
6160 _dbus_message_loader_get_buffer (loader, &buffer);
6161 _dbus_string_append_byte (buffer, data[i]);
6162 _dbus_message_loader_return_buffer (loader, buffer, 1);
6165 dbus_message_unref (message);
6167 /* Now pop back the message */
6168 if (!_dbus_message_loader_queue_messages (loader))
6169 _dbus_assert_not_reached ("no memory to queue messages");
6171 if (_dbus_message_loader_get_is_corrupted (loader))
6172 _dbus_assert_not_reached ("message loader corrupted");
6174 message = _dbus_message_loader_pop_message (loader);
6176 _dbus_assert_not_reached ("received a NULL message");
6178 if (dbus_message_get_reply_serial (message) != 0x12345678)
6179 _dbus_assert_not_reached ("reply serial fields differ");
6181 message_iter_test (message);
6183 dbus_message_unref (message);
6184 _dbus_message_loader_unref (loader);
6186 /* Now load every message in test_data_dir if we have one */
6187 if (test_data_dir == NULL)
6190 return dbus_internal_do_not_use_foreach_message_file (test_data_dir,
6191 (DBusForeachMessageFileFunc)
6192 dbus_internal_do_not_use_try_message_file,
6196 #endif /* DBUS_BUILD_TESTS */