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 _dbus_assert_not_reached ("appending a string field we don't support appending");
608 clear_header_padding (message);
610 old_len = _dbus_string_get_length (&message->header);
612 len = strlen (value);
614 _dbus_string_init_const_len (&v, value,
615 len + 1); /* include nul */
616 if (!_dbus_marshal_set_string (&message->header,
622 new_len = _dbus_string_get_length (&message->header);
624 adjust_field_offsets (message,
628 if (!append_header_padding (message))
634 /* this must succeed because it was allocated on function entry and
635 * DBusString doesn't ever realloc smaller
637 if (!append_header_padding (message))
638 _dbus_assert_not_reached ("failed to reappend header padding");
645 * Sets the serial number of a message.
646 * This can only be done once on a message.
648 * @param message the message
649 * @param serial the serial
652 _dbus_message_set_serial (DBusMessage *message,
655 _dbus_assert (!message->locked);
656 _dbus_assert (dbus_message_get_serial (message) == 0);
658 set_uint_field (message, FIELD_CLIENT_SERIAL,
660 message->client_serial = serial;
664 * Sets the reply serial of a message (the client serial
665 * of the message this is a reply to).
667 * @param message the message
668 * @param reply_serial the client serial
669 * @returns #FALSE if not enough memory
672 dbus_message_set_reply_serial (DBusMessage *message,
673 dbus_uint32_t reply_serial)
675 _dbus_assert (!message->locked);
677 if (set_uint_field (message, FIELD_REPLY_SERIAL,
680 message->reply_serial = reply_serial;
688 * Returns the serial of a message or -1 if none has been specified.
689 * The message's serial number is provided by the application sending
690 * the message and is used to identify replies to this message.
692 * @param message the message
693 * @returns the client serial
696 dbus_message_get_serial (DBusMessage *message)
698 return message->client_serial;
702 * Returns the serial that the message is
703 * a reply to or 0 if none.
705 * @param message the message
706 * @returns the reply serial
709 dbus_message_get_reply_serial (DBusMessage *message)
711 return message->reply_serial;
715 * Adds a counter to be incremented immediately with the
716 * size of this message, and decremented by the size
717 * of this message when this message if finalized.
718 * The link contains a counter with its refcount already
719 * incremented, but the counter itself not incremented.
720 * Ownership of link and counter refcount is passed to
723 * @param message the message
724 * @param link link with counter as data
727 _dbus_message_add_size_counter_link (DBusMessage *message,
730 /* right now we don't recompute the delta when message
731 * size changes, and that's OK for current purposes
732 * I think, but could be important to change later.
733 * Do recompute it whenever there are no outstanding counters,
734 * since it's basically free.
736 if (message->size_counters == NULL)
738 message->size_counter_delta =
739 _dbus_string_get_length (&message->header) +
740 _dbus_string_get_length (&message->body);
743 _dbus_verbose ("message has size %ld\n",
744 message->size_counter_delta);
748 _dbus_list_append_link (&message->size_counters, link);
750 _dbus_counter_adjust (link->data, message->size_counter_delta);
754 * Adds a counter to be incremented immediately with the
755 * size of this message, and decremented by the size
756 * of this message when this message if finalized.
758 * @param message the message
759 * @param counter the counter
760 * @returns #FALSE if no memory
763 _dbus_message_add_size_counter (DBusMessage *message,
764 DBusCounter *counter)
768 link = _dbus_list_alloc_link (counter);
772 _dbus_counter_ref (counter);
773 _dbus_message_add_size_counter_link (message, link);
779 * Removes a counter tracking the size of this message, and decrements
780 * the counter by the size of this message.
782 * @param message the message
783 * @param link_return return the link used
784 * @param counter the counter
787 _dbus_message_remove_size_counter (DBusMessage *message,
788 DBusCounter *counter,
789 DBusList **link_return)
793 link = _dbus_list_find_last (&message->size_counters,
795 _dbus_assert (link != NULL);
797 _dbus_list_unlink (&message->size_counters,
802 _dbus_list_free_link (link);
804 _dbus_counter_adjust (counter, message->size_counter_delta);
806 _dbus_counter_unref (counter);
810 dbus_message_create_header (DBusMessage *message,
817 if (!_dbus_string_append_byte (&message->header, message->byte_order))
820 if (!_dbus_string_append_byte (&message->header, type))
824 if (!_dbus_string_append_byte (&message->header, flags))
827 if (!_dbus_string_append_byte (&message->header, DBUS_MAJOR_PROTOCOL_VERSION))
830 message->header_fields[FIELD_HEADER_LENGTH].offset = 4;
831 if (!_dbus_marshal_uint32 (&message->header, message->byte_order, 0))
834 message->header_fields[FIELD_BODY_LENGTH].offset = 8;
835 if (!_dbus_marshal_uint32 (&message->header, message->byte_order, 0))
838 message->header_fields[FIELD_CLIENT_SERIAL].offset = 12;
839 if (!_dbus_marshal_int32 (&message->header, message->byte_order, -1))
842 /* Marshal message service */
845 if (!append_string_field (message,
847 DBUS_HEADER_FIELD_SERVICE,
852 _dbus_assert (name != NULL);
853 if (!append_string_field (message,
855 DBUS_HEADER_FIELD_NAME,
863 * Locks a message. Allows checking that applications don't keep a
864 * reference to a message in the outgoing queue and change it
865 * underneath us. Messages are locked when they enter the outgoing
866 * queue (dbus_connection_send_message()), and the library complains
867 * if the message is modified while locked.
869 * @param message the message to lock.
872 _dbus_message_lock (DBusMessage *message)
874 if (!message->locked)
876 /* Fill in our lengths */
877 set_uint_field (message,
879 _dbus_string_get_length (&message->header));
881 set_uint_field (message,
883 _dbus_string_get_length (&message->body));
885 message->locked = TRUE;
892 * @defgroup DBusMessage DBusMessage
894 * @brief Message to be sent or received over a DBusConnection.
896 * A DBusMessage is the most basic unit of communication over a
897 * DBusConnection. A DBusConnection represents a stream of messages
898 * received from a remote application, and a stream of messages
899 * sent to a remote application.
905 * @typedef DBusMessage
907 * Opaque data type representing a message received from or to be
908 * sent to another application.
912 dbus_message_new_empty_header (void)
914 DBusMessage *message;
917 message = dbus_new0 (DBusMessage, 1);
921 message->refcount.value = 1;
922 message->byte_order = DBUS_COMPILER_BYTE_ORDER;
923 message->client_serial = 0;
924 message->reply_serial = 0;
926 _dbus_data_slot_list_init (&message->slot_list);
929 while (i < FIELD_LAST)
931 message->header_fields[i].offset = -1;
935 if (!_dbus_string_init_preallocated (&message->header, 64))
941 if (!_dbus_string_init_preallocated (&message->body, 64))
943 _dbus_string_free (&message->header);
953 * Constructs a new message to invoke a method on a remote
954 * object. Returns #NULL if memory can't be allocated for the
955 * message. The service may be #NULL in which case no service is set;
956 * this is appropriate when using D-BUS in a peer-to-peer context (no
959 * @param name name of the message
960 * @param destination_service service that the message should be sent to or #NULL
961 * @returns a new DBusMessage, free with dbus_message_unref()
962 * @see dbus_message_unref()
965 dbus_message_new_method_call (const char *name,
966 const char *destination_service)
968 DBusMessage *message;
970 _dbus_return_val_if_fail (name != NULL, NULL);
972 message = dbus_message_new_empty_header ();
976 if (!dbus_message_create_header (message,
977 DBUS_MESSAGE_TYPE_METHOD_CALL,
978 name, destination_service))
980 dbus_message_unref (message);
988 * Constructs a message that is a reply to a method call. Returns
989 * #NULL if memory can't be allocated for the message.
991 * @param method_call the message which the created
992 * message is a reply to.
993 * @returns a new DBusMessage, free with dbus_message_unref()
994 * @see dbus_message_new_method_call(), dbus_message_unref()
997 dbus_message_new_method_return (DBusMessage *method_call)
999 DBusMessage *message;
1000 const char *sender, *name;
1002 _dbus_return_val_if_fail (method_call != NULL, NULL);
1004 sender = get_string_field (method_call,
1005 FIELD_SENDER, NULL);
1006 name = get_string_field (method_call,
1009 /* sender is allowed to be null here in peer-to-peer case */
1011 message = dbus_message_new_empty_header ();
1012 if (message == NULL)
1015 if (!dbus_message_create_header (message,
1016 DBUS_MESSAGE_TYPE_METHOD_RETURN,
1019 dbus_message_unref (message);
1023 if (!dbus_message_set_reply_serial (message,
1024 dbus_message_get_serial (method_call)))
1026 dbus_message_unref (message);
1034 * Constructs a new message representing a signal emission. Returns
1035 * #NULL if memory can't be allocated for the message. The name
1036 * passed in is the name of the signal.
1038 * @param name name of the signal
1039 * @returns a new DBusMessage, free with dbus_message_unref()
1040 * @see dbus_message_unref()
1043 dbus_message_new_signal (const char *name)
1045 DBusMessage *message;
1047 _dbus_return_val_if_fail (name != NULL, NULL);
1049 message = dbus_message_new_empty_header ();
1050 if (message == NULL)
1053 if (!dbus_message_create_header (message,
1054 DBUS_MESSAGE_TYPE_SIGNAL,
1057 dbus_message_unref (message);
1065 * Creates a new message that is an error reply to a certain message.
1066 * Error replies are possible in response to method calls primarily.
1068 * @param reply_to the original message
1069 * @param error_name the error name
1070 * @param error_message the error message string or #NULL for none
1071 * @returns a new error message
1074 dbus_message_new_error (DBusMessage *reply_to,
1075 const char *error_name,
1076 const char *error_message)
1078 DBusMessage *message;
1080 DBusMessageIter iter;
1082 _dbus_return_val_if_fail (reply_to != NULL, NULL);
1083 _dbus_return_val_if_fail (error_name != NULL, NULL);
1085 sender = get_string_field (reply_to,
1086 FIELD_SENDER, NULL);
1088 /* sender may be NULL for non-message-bus case or
1089 * when the message bus is dealing with an unregistered
1092 message = dbus_message_new_empty_header ();
1093 if (message == NULL)
1096 if (!dbus_message_create_header (message,
1097 DBUS_MESSAGE_TYPE_ERROR,
1098 error_name, sender))
1100 dbus_message_unref (message);
1104 if (!dbus_message_set_reply_serial (message,
1105 dbus_message_get_serial (reply_to)))
1107 dbus_message_unref (message);
1111 if (error_message != NULL)
1113 dbus_message_append_iter_init (message, &iter);
1114 if (!dbus_message_iter_append_string (&iter, error_message))
1116 dbus_message_unref (message);
1125 * Creates a new message that is an exact replica of the message
1126 * specified, except that its refcount is set to 1.
1128 * @param message the message.
1129 * @returns the new message.
1132 dbus_message_copy (const DBusMessage *message)
1134 DBusMessage *retval;
1137 _dbus_return_val_if_fail (message != NULL, NULL);
1139 retval = dbus_new0 (DBusMessage, 1);
1143 retval->refcount.value = 1;
1144 retval->byte_order = message->byte_order;
1145 retval->client_serial = message->client_serial;
1146 retval->reply_serial = message->reply_serial;
1147 retval->header_padding = message->header_padding;
1148 retval->locked = FALSE;
1150 if (!_dbus_string_init (&retval->header))
1156 if (!_dbus_string_init (&retval->body))
1158 _dbus_string_free (&retval->header);
1163 if (!_dbus_string_copy (&message->header, 0,
1164 &retval->header, 0))
1166 _dbus_string_free (&retval->header);
1167 _dbus_string_free (&retval->body);
1173 if (!_dbus_string_copy (&message->body, 0,
1176 _dbus_string_free (&retval->header);
1177 _dbus_string_free (&retval->body);
1183 for (i = 0; i < FIELD_LAST; i++)
1185 retval->header_fields[i].offset = message->header_fields[i].offset;
1193 * Increments the reference count of a DBusMessage.
1195 * @param message The message
1196 * @see dbus_message_unref
1199 dbus_message_ref (DBusMessage *message)
1201 dbus_int32_t old_refcount;
1203 _dbus_return_if_fail (message != NULL);
1205 old_refcount = _dbus_atomic_inc (&message->refcount);
1206 _dbus_assert (old_refcount >= 1);
1210 free_size_counter (void *element,
1213 DBusCounter *counter = element;
1214 DBusMessage *message = data;
1216 _dbus_counter_adjust (counter, - message->size_counter_delta);
1218 _dbus_counter_unref (counter);
1222 * Decrements the reference count of a DBusMessage.
1224 * @param message The message
1225 * @see dbus_message_ref
1228 dbus_message_unref (DBusMessage *message)
1230 dbus_int32_t old_refcount;
1232 _dbus_return_if_fail (message != NULL);
1234 old_refcount = _dbus_atomic_dec (&message->refcount);
1236 _dbus_assert (old_refcount >= 0);
1238 if (old_refcount == 1)
1240 /* This calls application callbacks! */
1241 _dbus_data_slot_list_free (&message->slot_list);
1243 _dbus_list_foreach (&message->size_counters,
1244 free_size_counter, message);
1245 _dbus_list_clear (&message->size_counters);
1247 _dbus_string_free (&message->header);
1248 _dbus_string_free (&message->body);
1250 dbus_free (message);
1255 * Gets the type of a message. Types include
1256 * DBUS_MESSAGE_TYPE_METHOD_CALL, DBUS_MESSAGE_TYPE_METHOD_RETURN,
1257 * DBUS_MESSAGE_TYPE_ERROR, DBUS_MESSAGE_TYPE_SIGNAL, but other types
1258 * are allowed and all code must silently ignore messages of unknown
1259 * type. DBUS_MESSAGE_TYPE_INVALID will never be returned, however.
1262 * @param message the message
1263 * @returns the type of the message
1266 dbus_message_get_type (DBusMessage *message)
1270 type = _dbus_string_get_byte (&message->header, 1);
1271 _dbus_assert (type != DBUS_MESSAGE_TYPE_INVALID);
1277 * Gets the name of a message.
1279 * @param message the message
1280 * @returns the message name (should not be freed)
1283 dbus_message_get_name (DBusMessage *message)
1285 _dbus_return_val_if_fail (message != NULL, NULL);
1287 return get_string_field (message, FIELD_NAME, NULL);
1291 * Gets the destination service of a message.
1293 * @param message the message
1294 * @returns the message destination service (should not be freed)
1297 dbus_message_get_destination (DBusMessage *message)
1299 _dbus_return_val_if_fail (message != NULL, NULL);
1301 return get_string_field (message, FIELD_SERVICE, NULL);
1305 * Appends fields to a message given a variable argument list. The
1306 * variable argument list should contain the type of the argument
1307 * followed by the value to add. Array values are specified by an int
1308 * typecode followed by a pointer to the array followed by an int
1309 * giving the length of the array. The argument list must be
1310 * terminated with #DBUS_TYPE_INVALID.
1312 * This function doesn't support dicts or non-fundamental arrays.
1314 * This function supports #DBUS_TYPE_INT64 and #DBUS_TYPE_UINT64
1315 * only if #DBUS_HAVE_INT64 is defined.
1317 * @param message the message
1318 * @param first_arg_type type of the first argument
1319 * @param ... value of first argument, list of additional type-value pairs
1320 * @returns #TRUE on success
1323 dbus_message_append_args (DBusMessage *message,
1330 _dbus_return_val_if_fail (message != NULL, FALSE);
1332 va_start (var_args, first_arg_type);
1333 retval = dbus_message_append_args_valist (message,
1342 * This function takes a va_list for use by language bindings.
1343 * It's otherwise the same as dbus_message_append_args().
1345 * @todo: Shouldn't this function clean up the changes to the message
1346 * on failures? (Yes)
1348 * @see dbus_message_append_args.
1349 * @param message the message
1350 * @param first_arg_type type of first argument
1351 * @param var_args value of first argument, then list of type/value pairs
1352 * @returns #TRUE on success
1355 dbus_message_append_args_valist (DBusMessage *message,
1360 DBusMessageIter iter;
1362 _dbus_return_val_if_fail (message != NULL, FALSE);
1364 old_len = _dbus_string_get_length (&message->body);
1366 type = first_arg_type;
1368 dbus_message_append_iter_init (message, &iter);
1375 if (!dbus_message_iter_append_nil (&iter))
1378 case DBUS_TYPE_BOOLEAN:
1379 if (!dbus_message_iter_append_boolean (&iter, va_arg (var_args, dbus_bool_t)))
1382 case DBUS_TYPE_INT32:
1383 if (!dbus_message_iter_append_int32 (&iter, va_arg (var_args, dbus_int32_t)))
1386 case DBUS_TYPE_UINT32:
1387 if (!dbus_message_iter_append_uint32 (&iter, va_arg (var_args, dbus_uint32_t)))
1390 #ifdef DBUS_HAVE_INT64
1391 case DBUS_TYPE_INT64:
1392 if (!dbus_message_iter_append_int64 (&iter, va_arg (var_args, dbus_int64_t)))
1395 case DBUS_TYPE_UINT64:
1396 if (!dbus_message_iter_append_uint64 (&iter, va_arg (var_args, dbus_uint64_t)))
1399 #endif /* DBUS_HAVE_INT64 */
1400 case DBUS_TYPE_DOUBLE:
1401 if (!dbus_message_iter_append_double (&iter, va_arg (var_args, double)))
1404 case DBUS_TYPE_STRING:
1405 if (!dbus_message_iter_append_string (&iter, va_arg (var_args, const char *)))
1408 case DBUS_TYPE_NAMED:
1411 unsigned char *data;
1414 name = va_arg (var_args, const char *);
1415 data = va_arg (var_args, unsigned char *);
1416 len = va_arg (var_args, int);
1418 if (!dbus_message_iter_append_named (&iter, name, data, len))
1422 case DBUS_TYPE_ARRAY:
1427 type = va_arg (var_args, int);
1428 data = va_arg (var_args, void *);
1429 len = va_arg (var_args, int);
1433 case DBUS_TYPE_BYTE:
1434 if (!dbus_message_iter_append_byte_array (&iter, (unsigned char *)data, len))
1437 case DBUS_TYPE_BOOLEAN:
1438 if (!dbus_message_iter_append_boolean_array (&iter, (unsigned char *)data, len))
1441 case DBUS_TYPE_INT32:
1442 if (!dbus_message_iter_append_int32_array (&iter, (dbus_int32_t *)data, len))
1445 case DBUS_TYPE_UINT32:
1446 if (!dbus_message_iter_append_uint32_array (&iter, (dbus_uint32_t *)data, len))
1449 #ifdef DBUS_HAVE_INT64
1450 case DBUS_TYPE_INT64:
1451 if (!dbus_message_iter_append_int64_array (&iter, (dbus_int64_t *)data, len))
1454 case DBUS_TYPE_UINT64:
1455 if (!dbus_message_iter_append_uint64_array (&iter, (dbus_uint64_t *)data, len))
1458 #endif /* DBUS_HAVE_INT64 */
1459 case DBUS_TYPE_DOUBLE:
1460 if (!dbus_message_iter_append_double_array (&iter, (double *)data, len))
1463 case DBUS_TYPE_STRING:
1464 if (!dbus_message_iter_append_string_array (&iter, (const char **)data, len))
1468 case DBUS_TYPE_ARRAY:
1469 case DBUS_TYPE_NAMED:
1470 case DBUS_TYPE_DICT:
1471 _dbus_warn ("dbus_message_append_args_valist doesn't support recursive arrays\n");
1474 _dbus_warn ("Unknown field type %d\n", type);
1480 case DBUS_TYPE_DICT:
1481 _dbus_warn ("dbus_message_append_args_valist doesn't support dicts\n");
1484 _dbus_warn ("Unknown field type %d\n", type);
1488 type = va_arg (var_args, int);
1499 * Gets arguments from a message given a variable argument list.
1500 * The variable argument list should contain the type of the
1501 * argumen followed by a pointer to where the value should be
1502 * stored. The list is terminated with #DBUS_TYPE_INVALID.
1504 * @param message the message
1505 * @param error error to be filled in on failure
1506 * @param first_arg_type the first argument type
1507 * @param ... location for first argument value, then list of type-location pairs
1508 * @returns #FALSE if the error was set
1511 dbus_message_get_args (DBusMessage *message,
1519 _dbus_return_val_if_fail (message != NULL, FALSE);
1520 _dbus_return_val_if_error_is_set (error, FALSE);
1522 va_start (var_args, first_arg_type);
1523 retval = dbus_message_get_args_valist (message, error, first_arg_type, var_args);
1530 * This function takes a va_list for use by language bindings
1532 * @todo We need to free the argument data when an error occurs.
1534 * @see dbus_message_get_args
1535 * @param message the message
1536 * @param error error to be filled in
1537 * @param first_arg_type type of the first argument
1538 * @param var_args return location for first argument, followed by list of type/location pairs
1539 * @returns #FALSE if error was set
1542 dbus_message_get_args_valist (DBusMessage *message,
1547 DBusMessageIter iter;
1549 _dbus_return_val_if_fail (message != NULL, FALSE);
1550 _dbus_return_val_if_error_is_set (error, FALSE);
1552 dbus_message_iter_init (message, &iter);
1553 return dbus_message_iter_get_args_valist (&iter, error, first_arg_type, var_args);
1557 * Gets arguments from a message iterator given a variable argument list.
1558 * The variable argument list should contain the type of the
1559 * argumen followed by a pointer to where the value should be
1560 * stored. The list is terminated with 0.
1562 * @param iter the message iterator
1563 * @param error error to be filled in on failure
1564 * @param first_arg_type the first argument type
1565 * @param ... location for first argument value, then list of type-location pairs
1566 * @returns #FALSE if the error was set
1569 dbus_message_iter_get_args (DBusMessageIter *iter,
1577 _dbus_return_val_if_fail (iter != NULL, FALSE);
1578 _dbus_return_val_if_error_is_set (error, FALSE);
1580 va_start (var_args, first_arg_type);
1581 retval = dbus_message_iter_get_args_valist (iter, error, first_arg_type, var_args);
1588 * This function takes a va_list for use by language bindings
1590 * This function supports #DBUS_TYPE_INT64 and #DBUS_TYPE_UINT64
1591 * only if #DBUS_HAVE_INT64 is defined.
1593 * @todo this function (or some lower-level non-convenience function)
1594 * needs better error handling; should allow the application to
1595 * distinguish between out of memory, and bad data from the remote
1596 * app. It also needs to not leak a bunch of args when it gets
1597 * to the arg that's bad, as that would be a security hole
1598 * (allow one app to force another to leak memory)
1600 * @todo We need to free the argument data when an error occurs.
1602 * @see dbus_message_get_args
1603 * @param iter the message iter
1604 * @param error error to be filled in
1605 * @param first_arg_type type of the first argument
1606 * @param var_args return location for first argument, followed by list of type/location pairs
1607 * @returns #FALSE if error was set
1610 dbus_message_iter_get_args_valist (DBusMessageIter *iter,
1615 int spec_type, msg_type, i;
1618 _dbus_return_val_if_fail (iter != NULL, FALSE);
1619 _dbus_return_val_if_error_is_set (error, FALSE);
1623 spec_type = first_arg_type;
1626 while (spec_type != 0)
1628 msg_type = dbus_message_iter_get_arg_type (iter);
1630 if (msg_type != spec_type)
1632 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1633 "Argument %d is specified to be of type \"%s\", but "
1634 "is actually of type \"%s\"\n", i,
1635 _dbus_type_to_string (spec_type),
1636 _dbus_type_to_string (msg_type));
1645 case DBUS_TYPE_BYTE:
1649 ptr = va_arg (var_args, unsigned char *);
1651 *ptr = dbus_message_iter_get_byte (iter);
1654 case DBUS_TYPE_BOOLEAN:
1658 ptr = va_arg (var_args, dbus_bool_t *);
1660 *ptr = dbus_message_iter_get_boolean (iter);
1663 case DBUS_TYPE_INT32:
1667 ptr = va_arg (var_args, dbus_int32_t *);
1669 *ptr = dbus_message_iter_get_int32 (iter);
1672 case DBUS_TYPE_UINT32:
1676 ptr = va_arg (var_args, dbus_uint32_t *);
1678 *ptr = dbus_message_iter_get_uint32 (iter);
1681 #ifdef DBUS_HAVE_INT64
1682 case DBUS_TYPE_INT64:
1686 ptr = va_arg (var_args, dbus_int64_t *);
1688 *ptr = dbus_message_iter_get_int64 (iter);
1691 case DBUS_TYPE_UINT64:
1695 ptr = va_arg (var_args, dbus_uint64_t *);
1697 *ptr = dbus_message_iter_get_uint64 (iter);
1700 #endif /* DBUS_HAVE_INT64 */
1702 case DBUS_TYPE_DOUBLE:
1706 ptr = va_arg (var_args, double *);
1708 *ptr = dbus_message_iter_get_double (iter);
1712 case DBUS_TYPE_STRING:
1716 ptr = va_arg (var_args, char **);
1718 *ptr = dbus_message_iter_get_string (iter);
1722 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1729 case DBUS_TYPE_NAMED:
1732 unsigned char **data;
1735 name = va_arg (var_args, char **);
1736 data = va_arg (var_args, unsigned char **);
1737 len = va_arg (var_args, int *);
1739 if (!dbus_message_iter_get_named (iter, name, data, len))
1741 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1746 case DBUS_TYPE_ARRAY:
1751 type = va_arg (var_args, int);
1752 data = va_arg (var_args, void *);
1753 len = va_arg (var_args, int *);
1755 if (dbus_message_iter_get_array_type (iter) != type)
1757 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1758 "Argument %d is specified to be of type \"array of %s\", but "
1759 "is actually of type \"array of %s\"\n", i,
1760 _dbus_type_to_string (type),
1761 _dbus_type_to_string (dbus_message_iter_get_array_type (iter)));
1767 case DBUS_TYPE_BYTE:
1768 if (!dbus_message_iter_get_byte_array (iter, (unsigned char **)data, len))
1770 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1774 case DBUS_TYPE_BOOLEAN:
1775 if (!dbus_message_iter_get_boolean_array (iter, (unsigned char **)data, len))
1777 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1781 case DBUS_TYPE_INT32:
1782 if (!dbus_message_iter_get_int32_array (iter, (dbus_int32_t **)data, len))
1784 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1788 case DBUS_TYPE_UINT32:
1789 if (!dbus_message_iter_get_uint32_array (iter, (dbus_uint32_t **)data, len))
1791 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1795 #ifdef DBUS_HAVE_INT64
1796 case DBUS_TYPE_INT64:
1797 if (!dbus_message_iter_get_int64_array (iter, (dbus_int64_t **)data, len))
1799 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1803 case DBUS_TYPE_UINT64:
1804 if (!dbus_message_iter_get_uint64_array (iter, (dbus_uint64_t **)data, len))
1806 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1810 #endif /* DBUS_HAVE_INT64 */
1811 case DBUS_TYPE_DOUBLE:
1812 if (!dbus_message_iter_get_double_array (iter, (double **)data, len))
1814 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1818 case DBUS_TYPE_STRING:
1819 if (!dbus_message_iter_get_string_array (iter, (char ***)data, len))
1821 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1826 case DBUS_TYPE_ARRAY:
1827 case DBUS_TYPE_NAMED:
1828 case DBUS_TYPE_DICT:
1829 _dbus_warn ("dbus_message_get_args_valist doesn't support recursive arrays\n");
1830 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1833 _dbus_warn ("Unknown field type %d\n", type);
1834 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1839 case DBUS_TYPE_DICT:
1840 _dbus_warn ("dbus_message_get_args_valist doesn't support dicts\n");
1841 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1844 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1845 _dbus_warn ("Unknown field type %d\n", spec_type);
1849 spec_type = va_arg (var_args, int);
1850 if (spec_type != 0 && !dbus_message_iter_next (iter))
1852 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1853 "Message has only %d arguments, but more were expected", i);
1869 * Initializes a DBusMessageIter representing the arguments of the
1870 * message passed in.
1872 * @param message the message
1873 * @param iter pointer to an iterator to initialize
1876 dbus_message_iter_init (DBusMessage *message,
1877 DBusMessageIter *iter)
1879 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1881 _dbus_return_if_fail (message != NULL);
1882 _dbus_return_if_fail (iter != NULL);
1884 _dbus_assert (sizeof (DBusMessageRealIter) <= sizeof (DBusMessageIter));
1886 real->message = message;
1887 real->parent_iter = NULL;
1888 real->changed_stamp = message->changed_stamp;
1890 real->type = DBUS_MESSAGE_ITER_TYPE_MESSAGE;
1892 real->end = _dbus_string_get_length (&message->body);
1894 real->container_start = 0;
1895 real->container_length_pos = 0;
1896 real->wrote_dict_key = 0;
1897 real->array_type_pos = 0;
1900 #ifndef DBUS_DISABLE_CHECKS
1902 dbus_message_iter_check (DBusMessageRealIter *iter)
1906 _dbus_warn ("dbus iterator check failed: iterator is NULL\n");
1910 if (iter->changed_stamp != iter->message->changed_stamp)
1912 _dbus_warn ("dbus iterator check failed: invalid iterator, must re-initialize it after modifying the message\n");
1916 if (iter->pos < 0 || iter->pos > iter->end)
1918 _dbus_warn ("dbus iterator check failed: invalid position\n");
1924 #endif /* DBUS_DISABLE_CHECKS */
1927 skip_array_type (DBusMessageRealIter *iter, int pos)
1933 data = _dbus_string_get_const_data_len (&iter->message->body,
1936 while (*data == DBUS_TYPE_ARRAY);
1942 dbus_message_iter_get_data_start (DBusMessageRealIter *iter, int *type)
1949 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
1950 data = _dbus_string_get_const_data_len (&iter->message->body,
1952 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1955 *type = DBUS_TYPE_INVALID;
1957 return skip_array_type (iter, iter->pos);
1959 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
1960 data = _dbus_string_get_const_data_len (&iter->message->body,
1961 iter->array_type_pos, 1);
1962 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1965 *type = DBUS_TYPE_INVALID;
1969 case DBUS_MESSAGE_ITER_TYPE_DICT:
1970 /* Get the length of the string */
1971 len = _dbus_demarshal_uint32 (&iter->message->body,
1972 iter->message->byte_order,
1974 pos = pos + len + 1;
1976 data = _dbus_string_get_const_data_len (&iter->message->body,
1978 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1981 *type = DBUS_TYPE_INVALID;
1983 return skip_array_type (iter, pos);
1986 _dbus_assert_not_reached ("Invalid iter type");
1989 *type = DBUS_TYPE_INVALID;
1995 * Checks if an iterator has any more fields.
1997 * @param iter the message iter
1998 * @returns #TRUE if there are more fields
2002 dbus_message_iter_has_next (DBusMessageIter *iter)
2004 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2008 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2010 if (real->pos >= real->end)
2013 pos = dbus_message_iter_get_data_start (real, &type);
2015 if (!_dbus_marshal_get_arg_end_pos (&real->message->body,
2016 real->message->byte_order,
2017 type, pos, &end_pos))
2020 if (end_pos >= real->end)
2027 * Moves the iterator to the next field.
2029 * @param iter The message iter
2030 * @returns #TRUE if the iterator was moved to the next field
2033 dbus_message_iter_next (DBusMessageIter *iter)
2035 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2039 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2041 pos = dbus_message_iter_get_data_start (real, &type);
2043 if (!_dbus_marshal_get_arg_end_pos (&real->message->body,
2044 real->message->byte_order,
2045 type, pos, &end_pos))
2048 if (end_pos >= real->end)
2051 real->pos = end_pos;
2057 * Returns the argument type of the argument that the
2058 * message iterator points at.
2060 * @param iter the message iter
2061 * @returns the field type
2064 dbus_message_iter_get_arg_type (DBusMessageIter *iter)
2066 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2069 _dbus_return_val_if_fail (dbus_message_iter_check (real), DBUS_TYPE_INVALID);
2071 if (real->pos >= real->end)
2072 return DBUS_TYPE_INVALID;
2074 pos = dbus_message_iter_get_data_start (real, &type);
2080 iter_get_array_type (DBusMessageRealIter *iter, int *array_type_pos)
2083 int _array_type_pos;
2088 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
2089 _array_type_pos = iter->pos + 1;
2091 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
2092 _array_type_pos = iter->array_type_pos + 1;
2094 case DBUS_MESSAGE_ITER_TYPE_DICT:
2095 /* Get the length of the string */
2096 len = _dbus_demarshal_uint32 (&iter->message->body,
2097 iter->message->byte_order,
2099 pos = pos + len + 1;
2100 data = _dbus_string_get_const_data_len (&iter->message->body,
2102 _array_type_pos = pos + 1;
2105 _dbus_assert_not_reached ("wrong iter type");
2106 return DBUS_TYPE_INVALID;
2109 if (array_type_pos != NULL)
2110 *array_type_pos = _array_type_pos;
2112 data = _dbus_string_get_const_data_len (&iter->message->body,
2113 _array_type_pos, 1);
2114 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
2117 return DBUS_TYPE_INVALID;
2122 * Returns the element type of the array that the
2123 * message iterator points at. Note that you need
2124 * to check that the iterator points to an array
2125 * prior to using this function.
2127 * @param iter the message iter
2128 * @returns the field type
2131 dbus_message_iter_get_array_type (DBusMessageIter *iter)
2133 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2136 _dbus_return_val_if_fail (dbus_message_iter_check (real), DBUS_TYPE_INVALID);
2138 if (real->pos >= real->end)
2139 return DBUS_TYPE_INVALID;
2141 pos = dbus_message_iter_get_data_start (real, &type);
2143 _dbus_assert (type == DBUS_TYPE_ARRAY);
2145 return iter_get_array_type (real, NULL);
2150 * Returns the string value that an iterator may point to.
2151 * Note that you need to check that the iterator points to
2152 * a string value before using this function.
2154 * @see dbus_message_iter_get_arg_type
2155 * @param iter the message iter
2156 * @returns the string
2159 dbus_message_iter_get_string (DBusMessageIter *iter)
2161 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2164 _dbus_return_val_if_fail (dbus_message_iter_check (real), NULL);
2166 pos = dbus_message_iter_get_data_start (real, &type);
2168 _dbus_assert (type == DBUS_TYPE_STRING);
2170 return _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2175 * Returns the name and data from a named type that an
2176 * iterator may point to. Note that you need to check that
2177 * the iterator points to a named type before using this
2180 * @see dbus_message_iter_get_arg_type
2181 * @param iter the message iter
2182 * @param name return location for the name
2183 * @param value return location for data
2184 * @param len return location for length of data
2185 * @returns TRUE if get succeed
2189 dbus_message_iter_get_named (DBusMessageIter *iter,
2191 unsigned char **value,
2194 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2198 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2200 pos = dbus_message_iter_get_data_start (real, &type);
2202 _dbus_assert (type == DBUS_TYPE_NAMED);
2204 _name = _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2210 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2211 pos + 1, NULL, value, len))
2223 * Returns the byte value that an iterator may point to.
2224 * Note that you need to check that the iterator points to
2225 * a byte value before using this function.
2227 * @see dbus_message_iter_get_arg_type
2228 * @param iter the message iter
2229 * @returns the byte value
2232 dbus_message_iter_get_byte (DBusMessageIter *iter)
2234 unsigned char value;
2235 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2238 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2240 pos = dbus_message_iter_get_data_start (real, &type);
2242 _dbus_assert (type == DBUS_TYPE_BYTE);
2244 value = _dbus_string_get_byte (&real->message->body, pos);
2251 * Returns the boolean value that an iterator may point to.
2252 * Note that you need to check that the iterator points to
2253 * a boolean value before using this function.
2255 * @see dbus_message_iter_get_arg_type
2256 * @param iter the message iter
2257 * @returns the boolean value
2260 dbus_message_iter_get_boolean (DBusMessageIter *iter)
2262 unsigned char value;
2263 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2266 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2268 pos = dbus_message_iter_get_data_start (real, &type);
2270 _dbus_assert (type == DBUS_TYPE_BOOLEAN);
2272 value = _dbus_string_get_byte (&real->message->body, pos);
2278 * Returns the 32 bit signed integer value that an iterator may point to.
2279 * Note that you need to check that the iterator points to
2280 * a 32-bit integer value before using this function.
2282 * @see dbus_message_iter_get_arg_type
2283 * @param iter the message iter
2284 * @returns the integer
2287 dbus_message_iter_get_int32 (DBusMessageIter *iter)
2289 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2292 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2294 pos = dbus_message_iter_get_data_start (real, &type);
2296 _dbus_assert (type == DBUS_TYPE_INT32);
2298 return _dbus_demarshal_int32 (&real->message->body, real->message->byte_order,
2303 * Returns the 32 bit unsigned integer value that an iterator may point to.
2304 * Note that you need to check that the iterator points to
2305 * a 32-bit unsigned integer value before using this function.
2307 * @see dbus_message_iter_get_arg_type
2308 * @param iter the message iter
2309 * @returns the integer
2312 dbus_message_iter_get_uint32 (DBusMessageIter *iter)
2314 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2317 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2319 pos = dbus_message_iter_get_data_start (real, &type);
2321 _dbus_assert (type == DBUS_TYPE_UINT32);
2323 return _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2327 #ifdef DBUS_HAVE_INT64
2330 * Returns the 64 bit signed integer value that an iterator may point
2331 * to. Note that you need to check that the iterator points to a
2332 * 64-bit integer value before using this function.
2334 * This function only exists if #DBUS_HAVE_INT64 is defined.
2336 * @see dbus_message_iter_get_arg_type
2337 * @param iter the message iter
2338 * @returns the integer
2341 dbus_message_iter_get_int64 (DBusMessageIter *iter)
2343 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2346 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2348 pos = dbus_message_iter_get_data_start (real, &type);
2350 _dbus_assert (type == DBUS_TYPE_INT64);
2352 return _dbus_demarshal_int64 (&real->message->body, real->message->byte_order,
2357 * Returns the 64 bit unsigned integer value that an iterator may point to.
2358 * Note that you need to check that the iterator points to
2359 * a 64-bit unsigned integer value before using this function.
2361 * This function only exists if #DBUS_HAVE_INT64 is defined.
2363 * @see dbus_message_iter_get_arg_type
2364 * @param iter the message iter
2365 * @returns the integer
2368 dbus_message_iter_get_uint64 (DBusMessageIter *iter)
2370 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2373 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0);
2375 pos = dbus_message_iter_get_data_start (real, &type);
2377 _dbus_assert (type == DBUS_TYPE_UINT64);
2379 return _dbus_demarshal_uint64 (&real->message->body, real->message->byte_order,
2383 #endif /* DBUS_HAVE_INT64 */
2386 * Returns the double value that an iterator may point to.
2387 * Note that you need to check that the iterator points to
2388 * a string value before using this function.
2390 * @see dbus_message_iter_get_arg_type
2391 * @param iter the message iter
2392 * @returns the double
2395 dbus_message_iter_get_double (DBusMessageIter *iter)
2397 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2400 _dbus_return_val_if_fail (dbus_message_iter_check (real), 0.0);
2402 pos = dbus_message_iter_get_data_start (real, &type);
2404 _dbus_assert (type == DBUS_TYPE_DOUBLE);
2406 return _dbus_demarshal_double (&real->message->body, real->message->byte_order,
2411 * Initializes an iterator for the array that the iterator
2412 * may point to. Note that you need to check that the iterator
2413 * points to an array prior to using this function.
2415 * The array element type is returned in array_type, and the array
2416 * iterator can only be used to get that type of data.
2418 * @param iter the iterator
2419 * @param array_iter pointer to an iterator to initialize
2420 * @param array_type gets set to the type of the array elements
2421 * @returns #TRUE on success
2424 dbus_message_iter_init_array_iterator (DBusMessageIter *iter,
2425 DBusMessageIter *array_iter,
2428 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2429 DBusMessageRealIter *array_real = (DBusMessageRealIter *)array_iter;
2430 int type, pos, len_pos, len, array_type_pos;
2433 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2435 pos = dbus_message_iter_get_data_start (real, &type);
2437 _dbus_assert (type == DBUS_TYPE_ARRAY);
2439 _array_type = iter_get_array_type (real, &array_type_pos);
2441 len_pos = _DBUS_ALIGN_VALUE (pos, sizeof (dbus_uint32_t));
2442 len = _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2445 array_real->parent_iter = real;
2446 array_real->message = real->message;
2447 array_real->changed_stamp = real->message->changed_stamp;
2449 array_real->type = DBUS_MESSAGE_ITER_TYPE_ARRAY;
2450 array_real->pos = pos;
2451 array_real->end = pos + len;
2453 array_real->container_start = pos;
2454 array_real->container_length_pos = len_pos;
2455 array_real->wrote_dict_key = 0;
2456 array_real->array_type_pos = array_type_pos;
2457 array_real->array_type_done = TRUE;
2459 if (array_type != NULL)
2460 *array_type = _array_type;
2467 * Initializes an iterator for the dict that the iterator
2468 * may point to. Note that you need to check that the iterator
2469 * points to a dict prior to using this function.
2471 * @param iter the iterator
2472 * @param dict_iter pointer to an iterator to initialize
2473 * @returns #TRUE on success
2476 dbus_message_iter_init_dict_iterator (DBusMessageIter *iter,
2477 DBusMessageIter *dict_iter)
2479 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2480 DBusMessageRealIter *dict_real = (DBusMessageRealIter *)dict_iter;
2481 int type, pos, len_pos, len;
2483 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2485 pos = dbus_message_iter_get_data_start (real, &type);
2487 _dbus_assert (type == DBUS_TYPE_DICT);
2489 len_pos = _DBUS_ALIGN_VALUE (pos, sizeof (dbus_uint32_t));
2490 len = _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2493 dict_real->parent_iter = real;
2494 dict_real->message = real->message;
2495 dict_real->changed_stamp = real->message->changed_stamp;
2497 dict_real->type = DBUS_MESSAGE_ITER_TYPE_DICT;
2498 dict_real->pos = pos;
2499 dict_real->end = pos + len;
2501 dict_real->container_start = pos;
2502 dict_real->container_length_pos = len_pos;
2503 dict_real->wrote_dict_key = 0;
2509 * Returns the byte array that the iterator may point to.
2510 * Note that you need to check that the iterator points
2511 * to a byte array prior to using this function.
2513 * @param iter the iterator
2514 * @param value return location for array values
2515 * @param len return location for length of byte array
2516 * @returns #TRUE on success
2519 dbus_message_iter_get_byte_array (DBusMessageIter *iter,
2520 unsigned char **value,
2523 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2526 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2528 pos = dbus_message_iter_get_data_start (real, &type);
2530 _dbus_assert (type == DBUS_TYPE_ARRAY);
2532 type = iter_get_array_type (real, NULL);
2534 _dbus_assert (type == DBUS_TYPE_BYTE);
2536 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2537 pos, NULL, value, len))
2544 * Returns the boolean array that the iterator may point to. Note that
2545 * you need to check that the iterator points to an array of the
2546 * correct type prior to using this function.
2548 * @param iter the iterator
2549 * @param value return location for the array
2550 * @param len return location for the array length
2551 * @returns #TRUE on success
2554 dbus_message_iter_get_boolean_array (DBusMessageIter *iter,
2555 unsigned char **value,
2558 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2561 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2563 pos = dbus_message_iter_get_data_start (real, &type);
2565 _dbus_assert (type == DBUS_TYPE_ARRAY);
2567 type = iter_get_array_type (real, NULL);
2569 _dbus_assert (type == DBUS_TYPE_BOOLEAN);
2571 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2572 pos, NULL, value, len))
2579 * Returns the 32 bit signed integer array that the iterator may point
2580 * to. Note that you need to check that the iterator points to an
2581 * array of the correct type prior to using this function.
2583 * @param iter the iterator
2584 * @param value return location for the array
2585 * @param len return location for the array length
2586 * @returns #TRUE on success
2589 dbus_message_iter_get_int32_array (DBusMessageIter *iter,
2590 dbus_int32_t **value,
2593 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2596 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2598 pos = dbus_message_iter_get_data_start (real, &type);
2600 _dbus_assert (type == DBUS_TYPE_ARRAY);
2602 type = iter_get_array_type (real, NULL);
2604 _dbus_assert (type == DBUS_TYPE_INT32);
2606 if (!_dbus_demarshal_int32_array (&real->message->body, real->message->byte_order,
2607 pos, NULL, value, len))
2614 * Returns the 32 bit unsigned integer array that the iterator may point
2615 * to. Note that you need to check that the iterator points to an
2616 * array of the correct type prior to using this function.
2618 * @param iter the iterator
2619 * @param value return location for the array
2620 * @param len return location for the array length
2621 * @returns #TRUE on success
2624 dbus_message_iter_get_uint32_array (DBusMessageIter *iter,
2625 dbus_uint32_t **value,
2628 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2631 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2633 pos = dbus_message_iter_get_data_start (real, &type);
2635 _dbus_assert (type == DBUS_TYPE_ARRAY);
2637 type = iter_get_array_type (real, NULL);
2638 _dbus_assert (type == DBUS_TYPE_UINT32);
2640 if (!_dbus_demarshal_uint32_array (&real->message->body, real->message->byte_order,
2641 pos, NULL, value, len))
2647 #ifdef DBUS_HAVE_INT64
2650 * Returns the 64 bit signed integer array that the iterator may point
2651 * to. Note that you need to check that the iterator points to an
2652 * array of the correct type prior to using this function.
2654 * This function only exists if #DBUS_HAVE_INT64 is defined.
2656 * @param iter the iterator
2657 * @param value return location for the array
2658 * @param len return location for the array length
2659 * @returns #TRUE on success
2662 dbus_message_iter_get_int64_array (DBusMessageIter *iter,
2663 dbus_int64_t **value,
2666 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2669 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2671 pos = dbus_message_iter_get_data_start (real, &type);
2673 _dbus_assert (type == DBUS_TYPE_ARRAY);
2675 type = iter_get_array_type (real, NULL);
2677 _dbus_assert (type == DBUS_TYPE_INT64);
2679 if (!_dbus_demarshal_int64_array (&real->message->body, real->message->byte_order,
2680 pos, NULL, value, len))
2687 * Returns the 64 bit unsigned integer array that the iterator may point
2688 * to. Note that you need to check that the iterator points to an
2689 * array of the correct type prior to using this function.
2691 * This function only exists if #DBUS_HAVE_INT64 is defined.
2693 * @param iter the iterator
2694 * @param value return location for the array
2695 * @param len return location for the array length
2696 * @returns #TRUE on success
2699 dbus_message_iter_get_uint64_array (DBusMessageIter *iter,
2700 dbus_uint64_t **value,
2703 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2706 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2708 pos = dbus_message_iter_get_data_start (real, &type);
2710 _dbus_assert (type == DBUS_TYPE_ARRAY);
2712 type = iter_get_array_type (real, NULL);
2713 _dbus_assert (type == DBUS_TYPE_UINT64);
2715 if (!_dbus_demarshal_uint64_array (&real->message->body, real->message->byte_order,
2716 pos, NULL, value, len))
2722 #endif /* DBUS_HAVE_INT64 */
2725 * Returns the double array that the iterator may point to. Note that
2726 * you need to check that the iterator points to an array of the
2727 * correct type prior to using this function.
2729 * @param iter the iterator
2730 * @param value return location for the array
2731 * @param len return location for the array length
2732 * @returns #TRUE on success
2735 dbus_message_iter_get_double_array (DBusMessageIter *iter,
2739 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2742 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2744 pos = dbus_message_iter_get_data_start (real, &type);
2746 _dbus_assert (type == DBUS_TYPE_ARRAY);
2748 type = iter_get_array_type (real, NULL);
2749 _dbus_assert (type == DBUS_TYPE_DOUBLE);
2751 if (!_dbus_demarshal_double_array (&real->message->body, real->message->byte_order,
2752 pos, NULL, value, len))
2759 * Returns the string array that the iterator may point to.
2760 * Note that you need to check that the iterator points
2761 * to a byte array prior to using this function.
2763 * The returned value is a #NULL-terminated array of strings.
2764 * Each string is a separate malloc block, and the array
2765 * itself is a malloc block. You can free this type of
2766 * string array with dbus_free_string_array().
2768 * @param iter the iterator
2769 * @param value return location for string values
2770 * @param len return location for length of byte array
2771 * @returns #TRUE on success
2774 dbus_message_iter_get_string_array (DBusMessageIter *iter,
2778 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2781 _dbus_return_val_if_fail (dbus_message_iter_check (real), FALSE);
2783 pos = dbus_message_iter_get_data_start (real, &type);
2785 _dbus_assert (type == DBUS_TYPE_ARRAY);
2787 type = iter_get_array_type (real, NULL);
2788 _dbus_assert (type == DBUS_TYPE_STRING);
2790 if (!_dbus_demarshal_string_array (&real->message->body, real->message->byte_order,
2791 pos, NULL, value, len))
2798 * Returns the key name fot the dict entry that an iterator
2799 * may point to. Note that you need to check that the iterator
2800 * points to a dict entry before using this function.
2802 * @see dbus_message_iter_init_dict_iterator
2803 * @param iter the message iter
2804 * @returns the key name
2807 dbus_message_iter_get_dict_key (DBusMessageIter *iter)
2809 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2811 _dbus_return_val_if_fail (dbus_message_iter_check (real), NULL);
2813 _dbus_assert (real->type == DBUS_MESSAGE_ITER_TYPE_DICT);
2815 return _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2820 * Initializes a DBusMessageIter pointing to the end of the
2821 * message. This iterator can be used to append data to the
2824 * @param message the message
2825 * @param iter pointer to an iterator to initialize
2828 dbus_message_append_iter_init (DBusMessage *message,
2829 DBusMessageIter *iter)
2831 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2833 _dbus_return_if_fail (message != NULL);
2834 _dbus_return_if_fail (iter != NULL);
2836 real->message = message;
2837 real->parent_iter = NULL;
2838 real->changed_stamp = message->changed_stamp;
2840 real->type = DBUS_MESSAGE_ITER_TYPE_MESSAGE;
2841 real->end = _dbus_string_get_length (&real->message->body);
2842 real->pos = real->end;
2844 real->container_length_pos = 0;
2845 real->wrote_dict_key = 0;
2848 #ifndef DBUS_DISABLE_CHECKS
2850 dbus_message_iter_append_check (DBusMessageRealIter *iter)
2854 _dbus_warn ("dbus iterator check failed: NULL iterator\n");
2858 if (iter->message->locked)
2860 _dbus_warn ("dbus iterator check failed: message is locked (has already been sent)\n");
2864 if (iter->changed_stamp != iter->message->changed_stamp)
2866 _dbus_warn ("dbus iterator check failed: invalid iterator, must re-initialize it after modifying the message");
2870 if (iter->pos != iter->end)
2872 _dbus_warn ("dbus iterator check failed: can only append at end of message");
2876 if (iter->pos != _dbus_string_get_length (&iter->message->body))
2878 _dbus_warn ("dbus iterator check failed: append pos not at end of message string");
2884 #endif /* DBUS_DISABLE_CHECKS */
2887 dbus_message_iter_append_type (DBusMessageRealIter *iter,
2893 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
2894 if (!_dbus_string_append_byte (&iter->message->body, type))
2898 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
2899 data = _dbus_string_get_const_data_len (&iter->message->body,
2900 iter->array_type_pos, 1);
2903 _dbus_warn ("Appended element of wrong type for array\n");
2908 case DBUS_MESSAGE_ITER_TYPE_DICT:
2909 if (!iter->wrote_dict_key)
2911 _dbus_warn ("Appending dict data before key name\n");
2915 if (!_dbus_string_append_byte (&iter->message->body, type))
2921 _dbus_assert_not_reached ("Invalid iter type");
2929 dbus_message_iter_update_after_change (DBusMessageRealIter *iter)
2931 iter->changed_stamp = iter->message->changed_stamp;
2933 /* Set new end of iter */
2934 iter->end = _dbus_string_get_length (&iter->message->body);
2935 iter->pos = iter->end;
2937 /* Set container length */
2938 if (iter->type == DBUS_MESSAGE_ITER_TYPE_DICT ||
2939 (iter->type == DBUS_MESSAGE_ITER_TYPE_ARRAY && iter->array_type_done))
2940 _dbus_marshal_set_uint32 (&iter->message->body,
2941 iter->message->byte_order,
2942 iter->container_length_pos,
2943 iter->end - iter->container_start);
2945 if (iter->parent_iter)
2946 dbus_message_iter_update_after_change (iter->parent_iter);
2950 dbus_message_iter_append_done (DBusMessageRealIter *iter)
2952 iter->message->changed_stamp++;
2953 dbus_message_iter_update_after_change (iter);
2954 iter->wrote_dict_key = FALSE;
2958 * Appends a nil value to the message
2960 * @param iter an iterator pointing to the end of the message
2961 * @returns #TRUE on success
2964 dbus_message_iter_append_nil (DBusMessageIter *iter)
2966 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2968 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
2970 if (!dbus_message_iter_append_type (real, DBUS_TYPE_NIL))
2973 dbus_message_iter_append_done (real);
2979 * Appends a boolean value to the message
2981 * @param iter an iterator pointing to the end of the message
2982 * @param value the boolean value
2983 * @returns #TRUE on success
2986 dbus_message_iter_append_boolean (DBusMessageIter *iter,
2989 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2991 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
2993 if (!dbus_message_iter_append_type (real, DBUS_TYPE_BOOLEAN))
2996 if (!_dbus_string_append_byte (&real->message->body, (value != FALSE)))
2998 _dbus_string_set_length (&real->message->body, real->pos);
3002 dbus_message_iter_append_done (real);
3008 * Appends a byte to the message
3010 * @param iter an iterator pointing to the end of the message
3011 * @param value the byte value
3012 * @returns #TRUE on success
3015 dbus_message_iter_append_byte (DBusMessageIter *iter,
3016 unsigned char value)
3018 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3020 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3022 if (!dbus_message_iter_append_type (real, DBUS_TYPE_BYTE))
3025 if (!_dbus_string_append_byte (&real->message->body, value))
3027 _dbus_string_set_length (&real->message->body, real->pos);
3031 dbus_message_iter_append_done (real);
3038 * Appends a 32 bit signed integer to the message.
3040 * @param iter an iterator pointing to the end of the message
3041 * @param value the integer value
3042 * @returns #TRUE on success
3045 dbus_message_iter_append_int32 (DBusMessageIter *iter,
3048 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3050 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3052 if (!dbus_message_iter_append_type (real, DBUS_TYPE_INT32))
3055 if (!_dbus_marshal_int32 (&real->message->body, real->message->byte_order, value))
3057 _dbus_string_set_length (&real->message->body, real->pos);
3061 dbus_message_iter_append_done (real);
3067 * Appends a 32 bit unsigned integer to the message.
3069 * @param iter an iterator pointing to the end of the message
3070 * @param value the integer value
3071 * @returns #TRUE on success
3074 dbus_message_iter_append_uint32 (DBusMessageIter *iter,
3075 dbus_uint32_t value)
3077 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3079 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3081 if (!dbus_message_iter_append_type (real, DBUS_TYPE_UINT32))
3084 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, value))
3086 _dbus_string_set_length (&real->message->body, real->pos);
3090 dbus_message_iter_append_done (real);
3095 #ifdef DBUS_HAVE_INT64
3098 * Appends a 64 bit signed integer to the message.
3100 * This function only exists if #DBUS_HAVE_INT64 is defined.
3102 * @param iter an iterator pointing to the end of the message
3103 * @param value the integer value
3104 * @returns #TRUE on success
3107 dbus_message_iter_append_int64 (DBusMessageIter *iter,
3110 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3112 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3114 if (!dbus_message_iter_append_type (real, DBUS_TYPE_INT64))
3117 if (!_dbus_marshal_int64 (&real->message->body, real->message->byte_order, value))
3119 _dbus_string_set_length (&real->message->body, real->pos);
3123 dbus_message_iter_append_done (real);
3129 * Appends a 64 bit unsigned integer to the message.
3131 * This function only exists if #DBUS_HAVE_INT64 is defined.
3133 * @param iter an iterator pointing to the end of the message
3134 * @param value the integer value
3135 * @returns #TRUE on success
3138 dbus_message_iter_append_uint64 (DBusMessageIter *iter,
3139 dbus_uint64_t value)
3141 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3143 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3145 if (!dbus_message_iter_append_type (real, DBUS_TYPE_UINT64))
3148 if (!_dbus_marshal_uint64 (&real->message->body, real->message->byte_order, value))
3150 _dbus_string_set_length (&real->message->body, real->pos);
3154 dbus_message_iter_append_done (real);
3159 #endif /* DBUS_HAVE_INT64 */
3162 * Appends a double value to the message.
3164 * @param iter an iterator pointing to the end of the message
3165 * @param value the double value
3166 * @returns #TRUE on success
3169 dbus_message_iter_append_double (DBusMessageIter *iter,
3172 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3174 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3176 if (!dbus_message_iter_append_type (real, DBUS_TYPE_DOUBLE))
3179 if (!_dbus_marshal_double (&real->message->body, real->message->byte_order, value))
3181 _dbus_string_set_length (&real->message->body, real->pos);
3185 dbus_message_iter_append_done (real);
3191 * Appends a UTF-8 string to the message.
3193 * @param iter an iterator pointing to the end of the message
3194 * @param value the string
3195 * @returns #TRUE on success
3198 dbus_message_iter_append_string (DBusMessageIter *iter,
3201 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3203 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3205 if (!dbus_message_iter_append_type (real, DBUS_TYPE_STRING))
3208 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, value))
3210 _dbus_string_set_length (&real->message->body, real->pos);
3214 dbus_message_iter_append_done (real);
3220 * Appends a named type data chunk to the message. A named
3221 * type is simply an arbitrary UTF-8 string used as a type
3222 * tag, plus an array of arbitrary bytes to be interpreted
3223 * according to the type tag.
3225 * @param iter an iterator pointing to the end of the message
3226 * @param name the name of the type
3227 * @param data the binary data used to store the value
3228 * @param len the length of the binary data in bytes
3229 * @returns #TRUE on success
3232 dbus_message_iter_append_named (DBusMessageIter *iter,
3234 const unsigned char *data,
3237 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3239 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3241 if (!dbus_message_iter_append_type (real, DBUS_TYPE_NAMED))
3244 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, name))
3246 _dbus_string_set_length (&real->message->body, real->pos);
3250 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, data, len))
3252 _dbus_string_set_length (&real->message->body, real->pos);
3256 dbus_message_iter_append_done (real);
3263 * Appends a dict key name to the message. The iterator used
3264 * must point to a dict.
3266 * @param iter an iterator pointing to the end of the message
3267 * @param value the string
3268 * @returns #TRUE on success
3271 dbus_message_iter_append_dict_key (DBusMessageIter *iter,
3274 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3276 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3277 _dbus_assert (real->type == DBUS_MESSAGE_ITER_TYPE_DICT);
3279 if (real->wrote_dict_key)
3281 _dbus_warn ("Appendinging multiple dict key names\n");
3285 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, value))
3290 dbus_message_iter_append_done (real);
3291 real->wrote_dict_key = TRUE;
3297 array_iter_type_mark_done (DBusMessageRealIter *iter)
3301 if (iter->type == DBUS_MESSAGE_ITER_TYPE_ARRAY)
3302 array_iter_type_mark_done (iter->parent_iter);
3306 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&iter->message->body),
3307 sizeof (dbus_uint32_t));
3309 /* Empty length for now, backfill later */
3310 if (!_dbus_marshal_uint32 (&iter->message->body, iter->message->byte_order, 0))
3312 _dbus_string_set_length (&iter->message->body, iter->pos);
3316 iter->container_start = _dbus_string_get_length (&iter->message->body);
3317 iter->container_length_pos = len_pos;
3318 iter->array_type_done = TRUE;
3324 append_array_type (DBusMessageRealIter *real,
3326 dbus_bool_t *array_type_done,
3327 int *array_type_pos)
3329 int existing_element_type;
3331 if (!dbus_message_iter_append_type (real, DBUS_TYPE_ARRAY))
3334 if (real->type == DBUS_MESSAGE_ITER_TYPE_ARRAY &&
3335 real->array_type_done)
3337 existing_element_type = iter_get_array_type (real, array_type_pos);
3338 if (existing_element_type != element_type)
3340 _dbus_warn ("Appending array of %s, when expecting array of %s\n",
3341 _dbus_type_to_string (element_type),
3342 _dbus_type_to_string (existing_element_type));
3343 _dbus_string_set_length (&real->message->body, real->pos);
3346 if (array_type_done != NULL)
3347 *array_type_done = TRUE;
3351 if (array_type_pos != NULL)
3352 *array_type_pos = _dbus_string_get_length (&real->message->body);
3354 /* Append element type */
3355 if (!_dbus_string_append_byte (&real->message->body, element_type))
3357 _dbus_string_set_length (&real->message->body, real->pos);
3361 if (array_type_done != NULL)
3362 *array_type_done = element_type != DBUS_TYPE_ARRAY;
3364 if (element_type != DBUS_TYPE_ARRAY &&
3365 !array_iter_type_mark_done (real))
3373 * Appends an array to the message and initializes an iterator that
3374 * can be used to append to the array.
3376 * @param iter an iterator pointing to the end of the message
3377 * @param array_iter pointer to an iter that will be initialized
3378 * @param element_type the type of the array elements
3379 * @returns #TRUE on success
3382 dbus_message_iter_append_array (DBusMessageIter *iter,
3383 DBusMessageIter *array_iter,
3386 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3387 DBusMessageRealIter *array_real = (DBusMessageRealIter *)array_iter;
3390 dbus_bool_t array_type_done;
3392 if (element_type == DBUS_TYPE_NIL)
3394 _dbus_warn ("Can't create NIL arrays\n");
3398 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3400 if (!append_array_type (real, element_type, &array_type_done, &array_type_pos))
3403 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&real->message->body), sizeof (dbus_uint32_t));
3405 if (array_type_done)
3407 /* Empty length for now, backfill later */
3408 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, 0))
3410 _dbus_string_set_length (&real->message->body, real->pos);
3415 array_real->parent_iter = real;
3416 array_real->message = real->message;
3417 array_real->changed_stamp = real->message->changed_stamp;
3419 array_real->type = DBUS_MESSAGE_ITER_TYPE_ARRAY;
3420 array_real->pos = _dbus_string_get_length (&real->message->body);
3421 array_real->end = array_real->end;
3423 array_real->container_start = array_real->pos;
3424 array_real->container_length_pos = len_pos;
3425 array_real->wrote_dict_key = 0;
3426 array_real->array_type_done = array_type_done;
3427 array_real->array_type_pos = array_type_pos;
3429 dbus_message_iter_append_done (array_real);
3435 * Appends a dict to the message and initializes an iterator that
3436 * can be used to append to the dict.
3438 * @param iter an iterator pointing to the end of the message
3439 * @param dict_iter pointer to an iter that will be initialized
3440 * @returns #TRUE on success
3443 dbus_message_iter_append_dict (DBusMessageIter *iter,
3444 DBusMessageIter *dict_iter)
3446 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3447 DBusMessageRealIter *dict_real = (DBusMessageRealIter *)dict_iter;
3450 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3452 if (!dbus_message_iter_append_type (real, DBUS_TYPE_DICT))
3455 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&real->message->body), sizeof (dbus_uint32_t));
3457 /* Empty length for now, backfill later */
3458 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, 0))
3460 _dbus_string_set_length (&real->message->body, real->pos);
3464 dict_real->parent_iter = real;
3465 dict_real->message = real->message;
3466 dict_real->changed_stamp = real->message->changed_stamp;
3468 dict_real->type = DBUS_MESSAGE_ITER_TYPE_DICT;
3469 dict_real->pos = _dbus_string_get_length (&real->message->body);
3470 dict_real->end = dict_real->end;
3472 dict_real->container_start = dict_real->pos;
3473 dict_real->container_length_pos = len_pos;
3474 dict_real->wrote_dict_key = 0;
3476 dbus_message_iter_append_done (dict_real);
3483 * Appends a boolean array to the message.
3485 * @param iter an iterator pointing to the end of the message
3486 * @param value the array
3487 * @param len the length of the array
3488 * @returns #TRUE on success
3491 dbus_message_iter_append_boolean_array (DBusMessageIter *iter,
3492 unsigned const char *value,
3495 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3497 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3499 if (!append_array_type (real, DBUS_TYPE_BOOLEAN, NULL, NULL))
3502 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, value, len))
3504 _dbus_string_set_length (&real->message->body, real->pos);
3508 dbus_message_iter_append_done (real);
3514 * Appends a 32 bit signed integer array to the message.
3516 * @param iter an iterator pointing to the end of the message
3517 * @param value the array
3518 * @param len the length of the array
3519 * @returns #TRUE on success
3522 dbus_message_iter_append_int32_array (DBusMessageIter *iter,
3523 const dbus_int32_t *value,
3526 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3528 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3530 if (!append_array_type (real, DBUS_TYPE_INT32, NULL, NULL))
3533 if (!_dbus_marshal_int32_array (&real->message->body, real->message->byte_order, value, len))
3535 _dbus_string_set_length (&real->message->body, real->pos);
3539 dbus_message_iter_append_done (real);
3545 * Appends a 32 bit unsigned integer array to the message.
3547 * @param iter an iterator pointing to the end of the message
3548 * @param value the array
3549 * @param len the length of the array
3550 * @returns #TRUE on success
3553 dbus_message_iter_append_uint32_array (DBusMessageIter *iter,
3554 const dbus_uint32_t *value,
3557 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3559 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3561 if (!append_array_type (real, DBUS_TYPE_UINT32, NULL, NULL))
3564 if (!_dbus_marshal_uint32_array (&real->message->body, real->message->byte_order, value, len))
3566 _dbus_string_set_length (&real->message->body, real->pos);
3570 dbus_message_iter_append_done (real);
3575 #ifdef DBUS_HAVE_INT64
3578 * Appends a 64 bit signed integer array to the message.
3580 * This function only exists if #DBUS_HAVE_INT64 is defined.
3582 * @param iter an iterator pointing to the end of the message
3583 * @param value the array
3584 * @param len the length of the array
3585 * @returns #TRUE on success
3588 dbus_message_iter_append_int64_array (DBusMessageIter *iter,
3589 const dbus_int64_t *value,
3592 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3594 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3596 if (!append_array_type (real, DBUS_TYPE_INT64, NULL, NULL))
3599 if (!_dbus_marshal_int64_array (&real->message->body, real->message->byte_order, value, len))
3601 _dbus_string_set_length (&real->message->body, real->pos);
3605 dbus_message_iter_append_done (real);
3611 * Appends a 64 bit unsigned integer array to the message.
3613 * This function only exists if #DBUS_HAVE_INT64 is defined.
3615 * @param iter an iterator pointing to the end of the message
3616 * @param value the array
3617 * @param len the length of the array
3618 * @returns #TRUE on success
3621 dbus_message_iter_append_uint64_array (DBusMessageIter *iter,
3622 const dbus_uint64_t *value,
3625 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3627 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3629 if (!append_array_type (real, DBUS_TYPE_UINT64, NULL, NULL))
3632 if (!_dbus_marshal_uint64_array (&real->message->body, real->message->byte_order, value, len))
3634 _dbus_string_set_length (&real->message->body, real->pos);
3638 dbus_message_iter_append_done (real);
3642 #endif /* DBUS_HAVE_INT64 */
3645 * Appends a double array to the message.
3647 * @param iter an iterator pointing to the end of the message
3648 * @param value the array
3649 * @param len the length of the array
3650 * @returns #TRUE on success
3653 dbus_message_iter_append_double_array (DBusMessageIter *iter,
3654 const double *value,
3657 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3659 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3661 if (!append_array_type (real, DBUS_TYPE_DOUBLE, NULL, NULL))
3664 if (!_dbus_marshal_double_array (&real->message->body, real->message->byte_order, value, len))
3666 _dbus_string_set_length (&real->message->body, real->pos);
3670 dbus_message_iter_append_done (real);
3676 * Appends a byte array to the message.
3678 * @param iter an iterator pointing to the end of the message
3679 * @param value the array
3680 * @param len the length of the array
3681 * @returns #TRUE on success
3684 dbus_message_iter_append_byte_array (DBusMessageIter *iter,
3685 unsigned const char *value,
3688 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3690 _dbus_return_val_if_fail (dbus_message_iter_append_check (real), FALSE);
3692 if (!append_array_type (real, DBUS_TYPE_BYTE, NULL, NULL))
3695 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, value, len))
3697 _dbus_string_set_length (&real->message->body, real->pos);
3701 dbus_message_iter_append_done (real);
3707 * Appends a string array to the message.
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_string_array (DBusMessageIter *iter,
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_STRING, NULL, NULL))
3726 if (!_dbus_marshal_string_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);
3738 * Sets the message sender.
3740 * @param message the message
3741 * @param sender the sender
3742 * @returns #FALSE if not enough memory
3745 dbus_message_set_sender (DBusMessage *message,
3748 _dbus_return_val_if_fail (message != NULL, FALSE);
3749 _dbus_return_val_if_fail (!message->locked, FALSE);
3753 delete_string_field (message, FIELD_SENDER);
3758 return set_string_field (message,
3765 * Sets a flag indicating that the message does not want a reply; if
3766 * this flag is set, the other end of the connection may (but is not
3767 * required to) optimize by not sending method return or error
3768 * replies. If this flag is set, there is no way to know whether the
3769 * message successfully arrived at the remote end.
3771 * @param message the message
3772 * @param no_reply #TRUE if no reply is desired
3775 dbus_message_set_no_reply (DBusMessage *message,
3776 dbus_bool_t no_reply)
3780 _dbus_return_if_fail (message != NULL);
3781 _dbus_return_if_fail (!message->locked);
3783 header = _dbus_string_get_data_len (&message->header, FLAGS_OFFSET, 1);
3786 *header |= DBUS_HEADER_FLAG_NO_REPLY_EXPECTED;
3788 *header &= ~DBUS_HEADER_FLAG_NO_REPLY_EXPECTED;
3792 * Returns #TRUE if the message does not expect
3795 * @param message the message
3796 * @returns #TRUE if the message sender isn't waiting for a reply
3799 dbus_message_get_no_reply (DBusMessage *message)
3803 _dbus_return_val_if_fail (message != NULL, FALSE);
3805 header = _dbus_string_get_const_data_len (&message->header, FLAGS_OFFSET, 1);
3807 return (*header & DBUS_HEADER_FLAG_NO_REPLY_EXPECTED) != 0;
3811 * Gets the service which originated this message,
3812 * or #NULL if unknown or inapplicable.
3814 * @param message the message
3815 * @returns the service name or #NULL
3818 dbus_message_get_sender (DBusMessage *message)
3820 _dbus_return_val_if_fail (message != NULL, NULL);
3822 return get_string_field (message, FIELD_SENDER, NULL);
3826 * Checks whether the message has the given name.
3827 * If the message has no name or has a different
3828 * name, returns #FALSE.
3830 * @param message the message
3831 * @param name the name to check (must not be #NULL)
3833 * @returns #TRUE if the message has the given name
3836 dbus_message_has_name (DBusMessage *message,
3841 _dbus_return_val_if_fail (message != NULL, FALSE);
3842 _dbus_return_val_if_fail (name != NULL, FALSE);
3844 n = dbus_message_get_name (message);
3846 if (n && strcmp (n, name) == 0)
3853 * Checks whether the message was sent to the given service. If the
3854 * message has no service specified or has a different name, returns
3857 * @param message the message
3858 * @param service the service to check (must not be #NULL)
3860 * @returns #TRUE if the message has the given destination service
3863 dbus_message_has_destination (DBusMessage *message,
3864 const char *service)
3868 _dbus_return_val_if_fail (message != NULL, FALSE);
3869 _dbus_return_val_if_fail (service != NULL, FALSE);
3871 s = dbus_message_get_destination (message);
3873 if (s && strcmp (s, service) == 0)
3880 * Checks whether the message has the given service as its sender. If
3881 * the message has no sender specified or has a different sender,
3882 * returns #FALSE. Note that if a peer application owns multiple
3883 * services, its messages will have only one of those services as the
3884 * sender (usually the base service). So you can't use this
3885 * function to prove the sender didn't own service Foo, you can
3886 * only use it to prove that it did.
3888 * @param message the message
3889 * @param service the service to check (must not be #NULL)
3891 * @returns #TRUE if the message has the given origin service
3894 dbus_message_has_sender (DBusMessage *message,
3895 const char *service)
3899 _dbus_assert (service != NULL);
3901 s = dbus_message_get_sender (message);
3903 if (s && strcmp (s, service) == 0)
3910 * Sets a #DBusError based on the contents of the given
3911 * message. The error is only set if the message
3912 * is an error message, as in DBUS_MESSAGE_TYPE_ERROR.
3913 * The name of the error is set to the name of the message,
3914 * and the error message is set to the first argument
3915 * if the argument exists and is a string.
3917 * The return value indicates whether the error was set (the error is
3918 * set if and only if the message is an error message).
3919 * So you can check for an error reply and convert it to DBusError
3922 * @param error the error to set
3923 * @param message the message to set it from
3924 * @returns #TRUE if dbus_message_get_is_error() returns #TRUE for the message
3927 dbus_set_error_from_message (DBusError *error,
3928 DBusMessage *message)
3932 _dbus_return_val_if_fail (message != NULL, FALSE);
3933 _dbus_return_val_if_error_is_set (error, FALSE);
3935 if (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_ERROR)
3939 dbus_message_get_args (message, NULL,
3940 DBUS_TYPE_STRING, &str,
3943 dbus_set_error (error, dbus_message_get_name (message),
3944 str ? "%s" : NULL, str);
3954 * @addtogroup DBusMessageInternals
3959 * @typedef DBusMessageLoader
3961 * The DBusMessageLoader object encapsulates the process of converting
3962 * a byte stream into a series of DBusMessage. It buffers the incoming
3963 * bytes as efficiently as possible, and generates a queue of
3964 * messages. DBusMessageLoader is typically used as part of a
3965 * DBusTransport implementation. The DBusTransport then hands off
3966 * the loaded messages to a DBusConnection, making the messages
3967 * visible to the application.
3969 * @todo write tests for break-loader that a) randomly delete header
3970 * fields and b) set string fields to zero-length and other funky
3975 /* we definitely use signed ints for sizes, so don't exceed
3976 * _DBUS_INT_MAX; and add 16 for paranoia, since a message
3977 * over 128M is pretty nuts anyhow.
3981 * The maximum sane message size.
3983 #define MAX_SANE_MESSAGE_SIZE (_DBUS_INT_MAX/16)
3986 * Implementation details of DBusMessageLoader.
3987 * All members are private.
3989 struct DBusMessageLoader
3991 int refcount; /**< Reference count. */
3993 DBusString data; /**< Buffered data */
3995 DBusList *messages; /**< Complete messages. */
3997 long max_message_size; /**< Maximum size of a message */
3999 unsigned int buffer_outstanding : 1; /**< Someone is using the buffer to read */
4001 unsigned int corrupted : 1; /**< We got broken data, and are no longer working */
4005 * The initial buffer size of the message loader.
4007 * @todo this should be based on min header size plus some average
4008 * body size, or something. Or rather, the min header size only, if we
4009 * want to try to read only the header, store that in a DBusMessage,
4010 * then read only the body and store that, etc., depends on
4011 * how we optimize _dbus_message_loader_get_buffer() and what
4012 * the exact message format is.
4014 #define INITIAL_LOADER_DATA_LEN 32
4017 * Creates a new message loader. Returns #NULL if memory can't
4020 * @returns new loader, or #NULL.
4023 _dbus_message_loader_new (void)
4025 DBusMessageLoader *loader;
4027 loader = dbus_new0 (DBusMessageLoader, 1);
4031 loader->refcount = 1;
4033 /* Try to cap message size at something that won't *totally* hose
4034 * the system if we have a couple of them.
4036 loader->max_message_size = _DBUS_ONE_MEGABYTE * 32;
4038 if (!_dbus_string_init (&loader->data))
4044 /* preallocate the buffer for speed, ignore failure */
4045 _dbus_string_set_length (&loader->data, INITIAL_LOADER_DATA_LEN);
4046 _dbus_string_set_length (&loader->data, 0);
4052 * Increments the reference count of the loader.
4054 * @param loader the loader.
4057 _dbus_message_loader_ref (DBusMessageLoader *loader)
4059 loader->refcount += 1;
4063 * Decrements the reference count of the loader and finalizes the
4064 * loader when the count reaches zero.
4066 * @param loader the loader.
4069 _dbus_message_loader_unref (DBusMessageLoader *loader)
4071 loader->refcount -= 1;
4072 if (loader->refcount == 0)
4074 _dbus_list_foreach (&loader->messages,
4075 (DBusForeachFunction) dbus_message_unref,
4077 _dbus_list_clear (&loader->messages);
4078 _dbus_string_free (&loader->data);
4084 * Gets the buffer to use for reading data from the network. Network
4085 * data is read directly into an allocated buffer, which is then used
4086 * in the DBusMessage, to avoid as many extra memcpy's as possible.
4087 * The buffer must always be returned immediately using
4088 * _dbus_message_loader_return_buffer(), even if no bytes are
4089 * successfully read.
4091 * @todo this function can be a lot more clever. For example
4092 * it can probably always return a buffer size to read exactly
4093 * the body of the next message, thus avoiding any memory wastage
4096 * @todo we need to enforce a max length on strings in header fields.
4098 * @param loader the message loader.
4099 * @param buffer the buffer
4102 _dbus_message_loader_get_buffer (DBusMessageLoader *loader,
4103 DBusString **buffer)
4105 _dbus_assert (!loader->buffer_outstanding);
4107 *buffer = &loader->data;
4109 loader->buffer_outstanding = TRUE;
4113 * The smallest header size that can occur.
4114 * (It won't be valid)
4116 #define DBUS_MINIMUM_HEADER_SIZE 16
4118 /** Pack four characters as in "abcd" into a uint32 */
4119 #define FOUR_CHARS_TO_UINT32(a, b, c, d) \
4120 ((((dbus_uint32_t)a) << 24) | \
4121 (((dbus_uint32_t)b) << 16) | \
4122 (((dbus_uint32_t)c) << 8) | \
4125 /** DBUS_HEADER_FIELD_NAME packed into a dbus_uint32_t */
4126 #define DBUS_HEADER_FIELD_NAME_AS_UINT32 \
4127 FOUR_CHARS_TO_UINT32 ('n', 'a', 'm', 'e')
4129 /** DBUS_HEADER_FIELD_SERVICE packed into a dbus_uint32_t */
4130 #define DBUS_HEADER_FIELD_SERVICE_AS_UINT32 \
4131 FOUR_CHARS_TO_UINT32 ('s', 'r', 'v', 'c')
4133 /** DBUS_HEADER_FIELD_REPLY packed into a dbus_uint32_t */
4134 #define DBUS_HEADER_FIELD_REPLY_AS_UINT32 \
4135 FOUR_CHARS_TO_UINT32 ('r', 'p', 'l', 'y')
4137 /** DBUS_HEADER_FIELD_SENDER Packed into a dbus_uint32_t */
4138 #define DBUS_HEADER_FIELD_SENDER_AS_UINT32 \
4139 FOUR_CHARS_TO_UINT32 ('s', 'n', 'd', 'r')
4142 decode_string_field (const DBusString *data,
4143 HeaderField fields[FIELD_LAST],
4147 const char *field_name)
4150 int string_data_pos;
4152 if (fields[field].offset >= 0)
4154 _dbus_verbose ("%s field provided twice\n",
4159 if (type != DBUS_TYPE_STRING)
4161 _dbus_verbose ("%s field has wrong type %s\n",
4162 field_name, _dbus_type_to_string (type));
4166 /* skip padding after typecode, skip string length;
4167 * we assume that the string arg has already been validated
4168 * for sanity and UTF-8
4170 string_data_pos = _DBUS_ALIGN_VALUE (pos, 4) + 4;
4171 _dbus_assert (string_data_pos < _dbus_string_get_length (data));
4173 _dbus_string_init_const (&tmp,
4174 _dbus_string_get_const_data (data) + string_data_pos);
4176 if (field == FIELD_NAME)
4178 if (!_dbus_string_validate_name (&tmp, 0, _dbus_string_get_length (&tmp)))
4180 _dbus_verbose ("%s field has invalid content \"%s\"\n",
4181 field_name, _dbus_string_get_const_data (&tmp));
4185 if (_dbus_string_starts_with_c_str (&tmp,
4186 DBUS_NAMESPACE_LOCAL_MESSAGE))
4188 _dbus_verbose ("Message is in the local namespace\n");
4194 if (!_dbus_string_validate_service (&tmp, 0, _dbus_string_get_length (&tmp)))
4196 _dbus_verbose ("%s field has invalid content \"%s\"\n",
4197 field_name, _dbus_string_get_const_data (&tmp));
4202 fields[field].offset = _DBUS_ALIGN_VALUE (pos, 4);
4205 _dbus_verbose ("Found field %s name at offset %d\n",
4206 field_name, fields[field].offset);
4213 decode_header_data (const DBusString *data,
4216 HeaderField fields[FIELD_LAST],
4217 int *message_padding)
4224 if (header_len < 16)
4228 while (i < FIELD_LAST)
4230 fields[i].offset = -1;
4234 fields[FIELD_HEADER_LENGTH].offset = 4;
4235 fields[FIELD_BODY_LENGTH].offset = 8;
4236 fields[FIELD_CLIENT_SERIAL].offset = 12;
4238 /* Now handle the named fields. A real named field is at least 4
4239 * bytes for the name, plus a type code (1 byte) plus padding. So
4240 * if we have less than 8 bytes left, it must be alignment padding,
4241 * not a field. While >= 8 bytes can't be entirely alignment
4245 while ((pos + 7) < header_len)
4247 pos = _DBUS_ALIGN_VALUE (pos, 4);
4249 if ((pos + 4) > header_len)
4252 field =_dbus_string_get_const_data_len (data, pos, 4);
4255 _dbus_assert (_DBUS_ALIGN_ADDRESS (field, 4) == field);
4257 if (!_dbus_marshal_validate_type (data, pos, &type, &pos))
4259 _dbus_verbose ("Failed to validate type of named header field\n");
4263 if (!_dbus_marshal_validate_arg (data, byte_order, 0, type, -1, pos, &new_pos))
4265 _dbus_verbose ("Failed to validate argument to named header field\n");
4269 if (new_pos > header_len)
4271 _dbus_verbose ("Named header field tries to extend beyond header length\n");
4275 switch (DBUS_UINT32_FROM_BE (*(int*)field))
4277 case DBUS_HEADER_FIELD_SERVICE_AS_UINT32:
4278 if (!decode_string_field (data, fields, pos, type,
4280 DBUS_HEADER_FIELD_SERVICE))
4284 case DBUS_HEADER_FIELD_NAME_AS_UINT32:
4285 if (!decode_string_field (data, fields, pos, type,
4287 DBUS_HEADER_FIELD_NAME))
4291 case DBUS_HEADER_FIELD_SENDER_AS_UINT32:
4292 if (!decode_string_field (data, fields, pos, type,
4294 DBUS_HEADER_FIELD_SENDER))
4298 case DBUS_HEADER_FIELD_REPLY_AS_UINT32:
4299 if (fields[FIELD_REPLY_SERIAL].offset >= 0)
4301 _dbus_verbose ("%s field provided twice\n",
4302 DBUS_HEADER_FIELD_REPLY);
4306 if (type != DBUS_TYPE_UINT32)
4308 _dbus_verbose ("%s field has wrong type\n", DBUS_HEADER_FIELD_REPLY);
4312 fields[FIELD_REPLY_SERIAL].offset = _DBUS_ALIGN_VALUE (pos, 4);
4314 _dbus_verbose ("Found reply serial at offset %d\n",
4315 fields[FIELD_REPLY_SERIAL].offset);
4319 _dbus_verbose ("Ignoring an unknown header field: %.4s at offset %d\n",
4326 if (pos < header_len)
4328 /* Alignment padding, verify that it's nul */
4329 _dbus_assert ((header_len - pos) < 8);
4331 if (!_dbus_string_validate_nul (data,
4332 pos, (header_len - pos)))
4334 _dbus_verbose ("header alignment padding is not nul\n");
4339 /* Name field is mandatory */
4340 if (fields[FIELD_NAME].offset < 0)
4342 _dbus_verbose ("No %s field provided\n",
4343 DBUS_HEADER_FIELD_NAME);
4347 if (message_padding)
4348 *message_padding = header_len - pos;
4354 * Returns a buffer obtained from _dbus_message_loader_get_buffer(),
4355 * indicating to the loader how many bytes of the buffer were filled
4356 * in. This function must always be called, even if no bytes were
4357 * successfully read.
4359 * @param loader the loader.
4360 * @param buffer the buffer.
4361 * @param bytes_read number of bytes that were read into the buffer.
4364 _dbus_message_loader_return_buffer (DBusMessageLoader *loader,
4368 _dbus_assert (loader->buffer_outstanding);
4369 _dbus_assert (buffer == &loader->data);
4371 loader->buffer_outstanding = FALSE;
4375 * Converts buffered data into messages.
4377 * @todo we need to check that the proper named header fields exist
4378 * for each message type.
4380 * @param loader the loader.
4381 * @returns #TRUE if we had enough memory to finish.
4384 _dbus_message_loader_queue_messages (DBusMessageLoader *loader)
4386 if (loader->corrupted)
4389 while (_dbus_string_get_length (&loader->data) >= 16)
4391 DBusMessage *message;
4392 const char *header_data;
4393 int byte_order, message_type, header_len, body_len, header_padding;
4394 dbus_uint32_t header_len_unsigned, body_len_unsigned;
4396 header_data = _dbus_string_get_const_data_len (&loader->data, 0, 16);
4398 _dbus_assert (_DBUS_ALIGN_ADDRESS (header_data, 4) == header_data);
4400 if (header_data[VERSION_OFFSET] != DBUS_MAJOR_PROTOCOL_VERSION)
4402 _dbus_verbose ("Message has protocol version %d ours is %d\n",
4403 (int) header_data[VERSION_OFFSET], DBUS_MAJOR_PROTOCOL_VERSION);
4404 loader->corrupted = TRUE;
4408 byte_order = header_data[BYTE_ORDER_OFFSET];
4410 if (byte_order != DBUS_LITTLE_ENDIAN &&
4411 byte_order != DBUS_BIG_ENDIAN)
4413 _dbus_verbose ("Message with bad byte order '%c' received\n",
4415 loader->corrupted = TRUE;
4419 /* Unknown types are ignored, but INVALID is
4422 message_type = header_data[TYPE_OFFSET];
4423 if (message_type == DBUS_MESSAGE_TYPE_INVALID)
4425 _dbus_verbose ("Message with bad type '%d' received\n",
4427 loader->corrupted = TRUE;
4431 header_len_unsigned = _dbus_unpack_uint32 (byte_order, header_data + 4);
4432 body_len_unsigned = _dbus_unpack_uint32 (byte_order, header_data + 8);
4434 if (header_len_unsigned < 16)
4436 _dbus_verbose ("Message had broken too-small header length %u\n",
4437 header_len_unsigned);
4438 loader->corrupted = TRUE;
4442 if (header_len_unsigned > (unsigned) MAX_SANE_MESSAGE_SIZE ||
4443 body_len_unsigned > (unsigned) MAX_SANE_MESSAGE_SIZE)
4445 _dbus_verbose ("Header or body length too large (%u %u)\n",
4446 header_len_unsigned,
4448 loader->corrupted = TRUE;
4452 /* Now that we know the values are in signed range, get
4453 * rid of stupid unsigned, just causes bugs
4455 header_len = header_len_unsigned;
4456 body_len = body_len_unsigned;
4458 if (_DBUS_ALIGN_VALUE (header_len, 8) != header_len_unsigned)
4461 _dbus_verbose ("header length %d is not aligned to 8 bytes\n",
4463 loader->corrupted = TRUE;
4467 if (header_len + body_len > loader->max_message_size)
4469 _dbus_verbose ("Message claimed length header = %d body = %d exceeds max message length %ld\n",
4470 header_len, body_len, loader->max_message_size);
4471 loader->corrupted = TRUE;
4475 if (_dbus_string_get_length (&loader->data) >= (header_len + body_len))
4477 HeaderField fields[FIELD_LAST];
4482 _dbus_verbose_bytes_of_string (&loader->data, 0, header_len + body_len);
4484 if (!decode_header_data (&loader->data, header_len, byte_order,
4485 fields, &header_padding))
4487 _dbus_verbose ("Header was invalid\n");
4488 loader->corrupted = TRUE;
4492 next_arg = header_len;
4493 while (next_arg < (header_len + body_len))
4496 int prev = next_arg;
4498 if (!_dbus_marshal_validate_type (&loader->data, next_arg,
4501 _dbus_verbose ("invalid typecode at offset %d\n", prev);
4502 loader->corrupted = TRUE;
4506 if (!_dbus_marshal_validate_arg (&loader->data,
4513 _dbus_verbose ("invalid type data at %d, next_arg\n", next_arg);
4514 loader->corrupted = TRUE;
4518 _dbus_assert (next_arg > prev);
4521 if (next_arg > (header_len + body_len))
4523 _dbus_verbose ("end of last arg at %d but message has len %d+%d=%d\n",
4524 next_arg, header_len, body_len,
4525 header_len + body_len);
4526 loader->corrupted = TRUE;
4530 message = dbus_message_new_empty_header ();
4531 if (message == NULL)
4533 _dbus_verbose ("Failed to allocate empty message\n");
4537 message->byte_order = byte_order;
4538 message->header_padding = header_padding;
4540 /* Copy in the offsets we found */
4542 while (i < FIELD_LAST)
4544 message->header_fields[i] = fields[i];
4548 if (!_dbus_list_append (&loader->messages, message))
4550 _dbus_verbose ("Failed to append new message to loader queue\n");
4551 dbus_message_unref (message);
4555 _dbus_assert (_dbus_string_get_length (&message->header) == 0);
4556 _dbus_assert (_dbus_string_get_length (&message->body) == 0);
4558 _dbus_assert (_dbus_string_get_length (&loader->data) >=
4559 (header_len + body_len));
4561 if (!_dbus_string_move_len (&loader->data, 0, header_len, &message->header, 0))
4563 _dbus_verbose ("Failed to move header into new message\n");
4564 _dbus_list_remove_last (&loader->messages, message);
4565 dbus_message_unref (message);
4569 if (!_dbus_string_move_len (&loader->data, 0, body_len, &message->body, 0))
4573 _dbus_verbose ("Failed to move body into new message\n");
4575 /* put the header back, we'll try again later */
4576 result = _dbus_string_copy_len (&message->header, 0, header_len,
4578 _dbus_assert (result); /* because DBusString never reallocs smaller */
4580 _dbus_list_remove_last (&loader->messages, message);
4581 dbus_message_unref (message);
4585 _dbus_assert (_dbus_string_get_length (&message->header) == header_len);
4586 _dbus_assert (_dbus_string_get_length (&message->body) == body_len);
4588 /* Fill in caches (we checked the types of these fields
4591 message->reply_serial = get_uint_field (message,
4592 FIELD_REPLY_SERIAL);
4593 message->client_serial = get_uint_field (message,
4594 FIELD_CLIENT_SERIAL);
4596 _dbus_verbose ("Loaded message %p\n", message);
4606 * Peeks at first loaded message, returns #NULL if no messages have
4609 * @param loader the loader.
4610 * @returns the next message, or #NULL if none.
4613 _dbus_message_loader_peek_message (DBusMessageLoader *loader)
4615 if (loader->messages)
4616 return loader->messages->data;
4622 * Pops a loaded message (passing ownership of the message
4623 * to the caller). Returns #NULL if no messages have been
4626 * @param loader the loader.
4627 * @returns the next message, or #NULL if none.
4630 _dbus_message_loader_pop_message (DBusMessageLoader *loader)
4632 return _dbus_list_pop_first (&loader->messages);
4636 * Pops a loaded message inside a list link (passing ownership of the
4637 * message and link to the caller). Returns #NULL if no messages have
4640 * @param loader the loader.
4641 * @returns the next message link, or #NULL if none.
4644 _dbus_message_loader_pop_message_link (DBusMessageLoader *loader)
4646 return _dbus_list_pop_first_link (&loader->messages);
4650 * Returns a popped message link, used to undo a pop.
4652 * @param loader the loader
4653 * @param link the link with a message in it
4656 _dbus_message_loader_putback_message_link (DBusMessageLoader *loader,
4659 _dbus_list_prepend_link (&loader->messages, link);
4663 * Checks whether the loader is confused due to bad data.
4664 * If messages are received that are invalid, the
4665 * loader gets confused and gives up permanently.
4666 * This state is called "corrupted."
4668 * @param loader the loader
4669 * @returns #TRUE if the loader is hosed.
4672 _dbus_message_loader_get_is_corrupted (DBusMessageLoader *loader)
4674 return loader->corrupted;
4678 * Sets the maximum size message we allow.
4680 * @param loader the loader
4681 * @param size the max message size in bytes
4684 _dbus_message_loader_set_max_message_size (DBusMessageLoader *loader,
4687 if (size > MAX_SANE_MESSAGE_SIZE)
4689 _dbus_verbose ("clamping requested max message size %ld to %d\n",
4690 size, MAX_SANE_MESSAGE_SIZE);
4691 size = MAX_SANE_MESSAGE_SIZE;
4693 loader->max_message_size = size;
4697 * Gets the maximum allowed message size in bytes.
4699 * @param loader the loader
4700 * @returns max size in bytes
4703 _dbus_message_loader_get_max_message_size (DBusMessageLoader *loader)
4705 return loader->max_message_size;
4708 static DBusDataSlotAllocator slot_allocator;
4709 _DBUS_DEFINE_GLOBAL_LOCK (message_slots);
4712 * Allocates an integer ID to be used for storing application-specific
4713 * data on any DBusMessage. The allocated ID may then be used
4714 * with dbus_message_set_data() and dbus_message_get_data().
4715 * The passed-in slot must be initialized to -1, and is filled in
4716 * with the slot ID. If the passed-in slot is not -1, it's assumed
4717 * to be already allocated, and its refcount is incremented.
4719 * The allocated slot is global, i.e. all DBusMessage objects will
4720 * have a slot with the given integer ID reserved.
4722 * @param slot_p address of a global variable storing the slot
4723 * @returns #FALSE on failure (no memory)
4726 dbus_message_allocate_data_slot (dbus_int32_t *slot_p)
4728 return _dbus_data_slot_allocator_alloc (&slot_allocator,
4729 _DBUS_LOCK_NAME (message_slots),
4734 * Deallocates a global ID for message data slots.
4735 * dbus_message_get_data() and dbus_message_set_data() may no
4736 * longer be used with this slot. Existing data stored on existing
4737 * DBusMessage objects will be freed when the message is
4738 * finalized, but may not be retrieved (and may only be replaced if
4739 * someone else reallocates the slot). When the refcount on the
4740 * passed-in slot reaches 0, it is set to -1.
4742 * @param slot_p address storing the slot to deallocate
4745 dbus_message_free_data_slot (dbus_int32_t *slot_p)
4747 _dbus_return_if_fail (*slot_p >= 0);
4749 _dbus_data_slot_allocator_free (&slot_allocator, slot_p);
4753 * Stores a pointer on a DBusMessage, along
4754 * with an optional function to be used for freeing
4755 * the data when the data is set again, or when
4756 * the message is finalized. The slot number
4757 * must have been allocated with dbus_message_allocate_data_slot().
4759 * @param message the message
4760 * @param slot the slot number
4761 * @param data the data to store
4762 * @param free_data_func finalizer function for the data
4763 * @returns #TRUE if there was enough memory to store the data
4766 dbus_message_set_data (DBusMessage *message,
4769 DBusFreeFunction free_data_func)
4771 DBusFreeFunction old_free_func;
4775 _dbus_return_val_if_fail (message != NULL, FALSE);
4776 _dbus_return_val_if_fail (slot >= 0, FALSE);
4778 retval = _dbus_data_slot_list_set (&slot_allocator,
4779 &message->slot_list,
4780 slot, data, free_data_func,
4781 &old_free_func, &old_data);
4785 /* Do the actual free outside the message lock */
4787 (* old_free_func) (old_data);
4794 * Retrieves data previously set with dbus_message_set_data().
4795 * The slot must still be allocated (must not have been freed).
4797 * @param message the message
4798 * @param slot the slot to get data from
4799 * @returns the data, or #NULL if not found
4802 dbus_message_get_data (DBusMessage *message,
4807 _dbus_return_val_if_fail (message != NULL, NULL);
4809 res = _dbus_data_slot_list_get (&slot_allocator,
4810 &message->slot_list,
4817 #ifdef DBUS_BUILD_TESTS
4818 #include "dbus-test.h"
4822 message_iter_test (DBusMessage *message)
4824 DBusMessageIter iter, dict, array, array2;
4826 unsigned char *data;
4827 dbus_int32_t *our_int_array;
4830 dbus_message_iter_init (message, &iter);
4833 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_STRING)
4834 _dbus_assert_not_reached ("Argument type isn't string");
4836 str = dbus_message_iter_get_string (&iter);
4837 if (strcmp (str, "Test string") != 0)
4838 _dbus_assert_not_reached ("Strings differ");
4841 if (!dbus_message_iter_next (&iter))
4842 _dbus_assert_not_reached ("Reached end of arguments");
4844 /* Signed integer tests */
4845 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_INT32)
4846 _dbus_assert_not_reached ("Argument type isn't int32");
4848 if (dbus_message_iter_get_int32 (&iter) != -0x12345678)
4849 _dbus_assert_not_reached ("Signed integers differ");
4851 if (!dbus_message_iter_next (&iter))
4852 _dbus_assert_not_reached ("Reached end of fields");
4854 /* Unsigned integer tests */
4855 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_UINT32)
4856 _dbus_assert_not_reached ("Argument type isn't int32");
4858 if (dbus_message_iter_get_uint32 (&iter) != 0xedd1e)
4859 _dbus_assert_not_reached ("Unsigned integers differ");
4861 if (!dbus_message_iter_next (&iter))
4862 _dbus_assert_not_reached ("Reached end of arguments");
4865 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DOUBLE)
4866 _dbus_assert_not_reached ("Argument type isn't double");
4868 if (dbus_message_iter_get_double (&iter) != 3.14159)
4869 _dbus_assert_not_reached ("Doubles differ");
4871 if (!dbus_message_iter_next (&iter))
4872 _dbus_assert_not_reached ("Reached end of arguments");
4874 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_ARRAY)
4875 _dbus_assert_not_reached ("Argument type not an array");
4877 if (dbus_message_iter_get_array_type (&iter) != DBUS_TYPE_DOUBLE)
4878 _dbus_assert_not_reached ("Array type not double");
4881 if (!dbus_message_iter_init_array_iterator (&iter, &array, NULL))
4882 _dbus_assert_not_reached ("Array init failed");
4884 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_DOUBLE)
4885 _dbus_assert_not_reached ("Argument type isn't double");
4887 if (dbus_message_iter_get_double (&array) != 1.5)
4888 _dbus_assert_not_reached ("Unsigned integers differ");
4890 if (!dbus_message_iter_next (&array))
4891 _dbus_assert_not_reached ("Reached end of arguments");
4893 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_DOUBLE)
4894 _dbus_assert_not_reached ("Argument type isn't double");
4896 if (dbus_message_iter_get_double (&array) != 2.5)
4897 _dbus_assert_not_reached ("Unsigned integers differ");
4899 if (dbus_message_iter_next (&array))
4900 _dbus_assert_not_reached ("Didn't reach end of arguments");
4902 if (!dbus_message_iter_next (&iter))
4903 _dbus_assert_not_reached ("Reached end of arguments");
4908 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DICT)
4909 _dbus_assert_not_reached ("not dict type");
4911 if (!dbus_message_iter_init_dict_iterator (&iter, &dict))
4912 _dbus_assert_not_reached ("dict iter failed");
4914 str = dbus_message_iter_get_dict_key (&dict);
4915 if (str == NULL || strcmp (str, "test") != 0)
4916 _dbus_assert_not_reached ("wrong dict key");
4919 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_UINT32)
4920 _dbus_assert_not_reached ("wrong dict entry type");
4922 if (dbus_message_iter_get_uint32 (&dict) != 0xDEADBEEF)
4923 _dbus_assert_not_reached ("wrong dict entry value");
4925 if (!dbus_message_iter_next (&dict))
4926 _dbus_assert_not_reached ("reached end of dict");
4928 /* array of array of int32 (in dict) */
4930 str = dbus_message_iter_get_dict_key (&dict);
4931 if (str == NULL || strcmp (str, "array") != 0)
4932 _dbus_assert_not_reached ("wrong dict key");
4935 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_ARRAY)
4936 _dbus_assert_not_reached ("Argument type not an array");
4938 if (dbus_message_iter_get_array_type (&dict) != DBUS_TYPE_ARRAY)
4939 _dbus_assert_not_reached ("Array type not array");
4941 if (!dbus_message_iter_init_array_iterator (&dict, &array, NULL))
4942 _dbus_assert_not_reached ("Array init failed");
4944 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_ARRAY)
4945 _dbus_assert_not_reached ("Argument type isn't array");
4947 if (dbus_message_iter_get_array_type (&array) != DBUS_TYPE_INT32)
4948 _dbus_assert_not_reached ("Array type not int32");
4950 if (!dbus_message_iter_init_array_iterator (&array, &array2, NULL))
4951 _dbus_assert_not_reached ("Array init failed");
4953 if (dbus_message_iter_get_arg_type (&array2) != DBUS_TYPE_INT32)
4954 _dbus_assert_not_reached ("Argument type isn't int32");
4956 if (dbus_message_iter_get_int32 (&array2) != 0x12345678)
4957 _dbus_assert_not_reached ("Signed integers differ");
4959 if (!dbus_message_iter_next (&array2))
4960 _dbus_assert_not_reached ("Reached end of arguments");
4962 if (dbus_message_iter_get_int32 (&array2) != 0x23456781)
4963 _dbus_assert_not_reached ("Signed integers differ");
4965 if (dbus_message_iter_next (&array2))
4966 _dbus_assert_not_reached ("Didn't reached end of arguments");
4968 if (!dbus_message_iter_next (&array))
4969 _dbus_assert_not_reached ("Reached end of arguments");
4971 if (dbus_message_iter_get_array_type (&array) != DBUS_TYPE_INT32)
4972 _dbus_assert_not_reached ("Array type not int32");
4974 if (!dbus_message_iter_get_int32_array (&array,
4977 _dbus_assert_not_reached ("couldn't get int32 array");
4979 _dbus_assert (len == 3);
4980 _dbus_assert (our_int_array[0] == 0x34567812 &&
4981 our_int_array[1] == 0x45678123 &&
4982 our_int_array[2] == 0x56781234);
4983 dbus_free (our_int_array);
4985 if (dbus_message_iter_next (&array))
4986 _dbus_assert_not_reached ("Didn't reach end of array");
4988 if (dbus_message_iter_next (&dict))
4989 _dbus_assert_not_reached ("Didn't reach end of dict");
4991 if (!dbus_message_iter_next (&iter))
4992 _dbus_assert_not_reached ("Reached end of arguments");
4994 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_BYTE)
4996 _dbus_warn ("type was: %d\n", dbus_message_iter_get_arg_type (&iter));
4997 _dbus_assert_not_reached ("wrong type after dict (should be byte)");
5000 if (dbus_message_iter_get_byte (&iter) != 0xF0)
5001 _dbus_assert_not_reached ("wrong value after dict");
5004 if (!dbus_message_iter_next (&iter))
5005 _dbus_assert_not_reached ("Reached end of arguments");
5007 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_NIL)
5008 _dbus_assert_not_reached ("not a nil type");
5010 if (!dbus_message_iter_next (&iter))
5011 _dbus_assert_not_reached ("Reached end of arguments");
5013 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_NAMED)
5014 _dbus_assert_not_reached ("wrong type after dict");
5016 if (!dbus_message_iter_get_named (&iter, &str, &data, &len))
5017 _dbus_assert_not_reached ("failed to get named");
5019 _dbus_assert (strcmp (str, "named")==0);
5020 _dbus_assert (len == 5);
5021 _dbus_assert (strcmp (data, "data")==0);
5025 if (dbus_message_iter_next (&iter))
5026 _dbus_assert_not_reached ("Didn't reach end of arguments");
5031 check_message_handling_type (DBusMessageIter *iter,
5034 DBusMessageIter child_iter;
5040 case DBUS_TYPE_BYTE:
5041 dbus_message_iter_get_byte (iter);
5043 case DBUS_TYPE_BOOLEAN:
5044 dbus_message_iter_get_boolean (iter);
5046 case DBUS_TYPE_INT32:
5047 dbus_message_iter_get_int32 (iter);
5049 case DBUS_TYPE_UINT32:
5050 dbus_message_iter_get_uint32 (iter);
5052 case DBUS_TYPE_INT64:
5053 #ifdef DBUS_HAVE_INT64
5054 dbus_message_iter_get_int64 (iter);
5057 case DBUS_TYPE_UINT64:
5058 #ifdef DBUS_HAVE_INT64
5059 dbus_message_iter_get_uint64 (iter);
5062 case DBUS_TYPE_DOUBLE:
5063 dbus_message_iter_get_double (iter);
5065 case DBUS_TYPE_STRING:
5068 str = dbus_message_iter_get_string (iter);
5071 _dbus_warn ("NULL string in message\n");
5077 case DBUS_TYPE_NAMED:
5080 unsigned char *data;
5083 if (!dbus_message_iter_get_named (iter, &name, &data, &len))
5085 _dbus_warn ("error reading name from named type\n");
5092 case DBUS_TYPE_ARRAY:
5096 if (!dbus_message_iter_init_array_iterator (iter, &child_iter, &array_type))
5098 _dbus_warn ("Failed to init array iterator\n");
5102 while (dbus_message_iter_has_next (&child_iter))
5104 if (!check_message_handling_type (&child_iter, array_type))
5106 _dbus_warn ("error in array element\n");
5110 if (!dbus_message_iter_next (&child_iter))
5115 case DBUS_TYPE_DICT:
5120 if (!dbus_message_iter_init_dict_iterator (iter, &child_iter))
5122 _dbus_warn ("Failed to init dict iterator\n");
5126 while ((entry_type = dbus_message_iter_get_arg_type (&child_iter)) != DBUS_TYPE_INVALID)
5128 key = dbus_message_iter_get_dict_key (&child_iter);
5131 _dbus_warn ("error reading dict key\n");
5136 if (!check_message_handling_type (&child_iter, entry_type))
5138 _dbus_warn ("error in dict value\n");
5142 if (!dbus_message_iter_next (&child_iter))
5149 _dbus_warn ("unknown type %d\n", type);
5158 check_message_handling (DBusMessage *message)
5160 DBusMessageIter iter;
5163 dbus_uint32_t client_serial;
5167 client_serial = dbus_message_get_serial (message);
5169 /* can't use set_serial due to the assertions at the start of it */
5170 set_uint_field (message, FIELD_CLIENT_SERIAL,
5173 if (client_serial != dbus_message_get_serial (message))
5175 _dbus_warn ("get/set cycle for client_serial did not succeed\n");
5179 /* If we implement message_set_arg (message, n, value)
5180 * then we would want to test it here
5183 dbus_message_iter_init (message, &iter);
5184 while ((type = dbus_message_iter_get_arg_type (&iter)) != DBUS_TYPE_INVALID)
5186 if (!check_message_handling_type (&iter, type))
5189 if (!dbus_message_iter_next (&iter))
5200 check_have_valid_message (DBusMessageLoader *loader)
5202 DBusMessage *message;
5208 if (!_dbus_message_loader_queue_messages (loader))
5209 _dbus_assert_not_reached ("no memory to queue messages");
5211 if (_dbus_message_loader_get_is_corrupted (loader))
5213 _dbus_warn ("loader corrupted on message that was expected to be valid\n");
5217 message = _dbus_message_loader_pop_message (loader);
5218 if (message == NULL)
5220 _dbus_warn ("didn't load message that was expected to be valid (message not popped)\n");
5224 if (_dbus_string_get_length (&loader->data) > 0)
5226 _dbus_warn ("had leftover bytes from expected-to-be-valid single message\n");
5230 /* Verify that we're able to properly deal with the message.
5231 * For example, this would detect improper handling of messages
5232 * in nonstandard byte order.
5234 if (!check_message_handling (message))
5241 dbus_message_unref (message);
5247 check_invalid_message (DBusMessageLoader *loader)
5253 if (!_dbus_message_loader_queue_messages (loader))
5254 _dbus_assert_not_reached ("no memory to queue messages");
5256 if (!_dbus_message_loader_get_is_corrupted (loader))
5258 _dbus_warn ("loader not corrupted on message that was expected to be invalid\n");
5269 check_incomplete_message (DBusMessageLoader *loader)
5271 DBusMessage *message;
5277 if (!_dbus_message_loader_queue_messages (loader))
5278 _dbus_assert_not_reached ("no memory to queue messages");
5280 if (_dbus_message_loader_get_is_corrupted (loader))
5282 _dbus_warn ("loader corrupted on message that was expected to be valid (but incomplete)\n");
5286 message = _dbus_message_loader_pop_message (loader);
5287 if (message != NULL)
5289 _dbus_warn ("loaded message that was expected to be incomplete\n");
5297 dbus_message_unref (message);
5302 check_loader_results (DBusMessageLoader *loader,
5303 DBusMessageValidity validity)
5305 if (!_dbus_message_loader_queue_messages (loader))
5306 _dbus_assert_not_reached ("no memory to queue messages");
5310 case _DBUS_MESSAGE_VALID:
5311 return check_have_valid_message (loader);
5312 case _DBUS_MESSAGE_INVALID:
5313 return check_invalid_message (loader);
5314 case _DBUS_MESSAGE_INCOMPLETE:
5315 return check_incomplete_message (loader);
5316 case _DBUS_MESSAGE_UNKNOWN:
5320 _dbus_assert_not_reached ("bad DBusMessageValidity");
5326 * Loads the message in the given message file.
5328 * @param filename filename to load
5329 * @param is_raw if #TRUE load as binary data, if #FALSE as message builder language
5330 * @param data string to load message into
5331 * @returns #TRUE if the message was loaded
5334 dbus_internal_do_not_use_load_message_file (const DBusString *filename,
5346 _dbus_verbose ("Loading raw %s\n", _dbus_string_get_const_data (filename));
5347 dbus_error_init (&error);
5348 if (!_dbus_file_get_contents (data, filename, &error))
5350 _dbus_warn ("Could not load message file %s: %s\n",
5351 _dbus_string_get_const_data (filename),
5353 dbus_error_free (&error);
5359 if (!_dbus_message_data_load (data, filename))
5361 _dbus_warn ("Could not load message file %s\n",
5362 _dbus_string_get_const_data (filename));
5375 * Tries loading the message in the given message file
5376 * and verifies that DBusMessageLoader can handle it.
5378 * @param filename filename to load
5379 * @param is_raw if #TRUE load as binary data, if #FALSE as message builder language
5380 * @param expected_validity what the message has to be like to return #TRUE
5381 * @returns #TRUE if the message has the expected validity
5384 dbus_internal_do_not_use_try_message_file (const DBusString *filename,
5386 DBusMessageValidity expected_validity)
5393 if (!_dbus_string_init (&data))
5394 _dbus_assert_not_reached ("could not allocate string\n");
5396 if (!dbus_internal_do_not_use_load_message_file (filename, is_raw,
5400 retval = dbus_internal_do_not_use_try_message_data (&data, expected_validity);
5406 if (_dbus_string_get_length (&data) > 0)
5407 _dbus_verbose_bytes_of_string (&data, 0,
5408 _dbus_string_get_length (&data));
5410 _dbus_warn ("Failed message loader test on %s\n",
5411 _dbus_string_get_const_data (filename));
5414 _dbus_string_free (&data);
5420 * Tries loading the given message data.
5423 * @param data the message data
5424 * @param expected_validity what the message has to be like to return #TRUE
5425 * @returns #TRUE if the message has the expected validity
5428 dbus_internal_do_not_use_try_message_data (const DBusString *data,
5429 DBusMessageValidity expected_validity)
5431 DBusMessageLoader *loader;
5439 /* Write the data one byte at a time */
5441 loader = _dbus_message_loader_new ();
5443 /* check some trivial loader functions */
5444 _dbus_message_loader_ref (loader);
5445 _dbus_message_loader_unref (loader);
5446 _dbus_message_loader_get_max_message_size (loader);
5448 len = _dbus_string_get_length (data);
5449 for (i = 0; i < len; i++)
5453 _dbus_message_loader_get_buffer (loader, &buffer);
5454 _dbus_string_append_byte (buffer,
5455 _dbus_string_get_byte (data, i));
5456 _dbus_message_loader_return_buffer (loader, buffer, 1);
5459 if (!check_loader_results (loader, expected_validity))
5462 _dbus_message_loader_unref (loader);
5465 /* Write the data all at once */
5467 loader = _dbus_message_loader_new ();
5472 _dbus_message_loader_get_buffer (loader, &buffer);
5473 _dbus_string_copy (data, 0, buffer,
5474 _dbus_string_get_length (buffer));
5475 _dbus_message_loader_return_buffer (loader, buffer, 1);
5478 if (!check_loader_results (loader, expected_validity))
5481 _dbus_message_loader_unref (loader);
5484 /* Write the data 2 bytes at a time */
5486 loader = _dbus_message_loader_new ();
5488 len = _dbus_string_get_length (data);
5489 for (i = 0; i < len; i += 2)
5493 _dbus_message_loader_get_buffer (loader, &buffer);
5494 _dbus_string_append_byte (buffer,
5495 _dbus_string_get_byte (data, i));
5497 _dbus_string_append_byte (buffer,
5498 _dbus_string_get_byte (data, i+1));
5499 _dbus_message_loader_return_buffer (loader, buffer, 1);
5502 if (!check_loader_results (loader, expected_validity))
5505 _dbus_message_loader_unref (loader);
5513 _dbus_message_loader_unref (loader);
5519 process_test_subdir (const DBusString *test_base_dir,
5521 DBusMessageValidity validity,
5522 DBusForeachMessageFileFunc function,
5525 DBusString test_directory;
5526 DBusString filename;
5534 if (!_dbus_string_init (&test_directory))
5535 _dbus_assert_not_reached ("didn't allocate test_directory\n");
5537 _dbus_string_init_const (&filename, subdir);
5539 if (!_dbus_string_copy (test_base_dir, 0,
5540 &test_directory, 0))
5541 _dbus_assert_not_reached ("couldn't copy test_base_dir to test_directory");
5543 if (!_dbus_concat_dir_and_file (&test_directory, &filename))
5544 _dbus_assert_not_reached ("couldn't allocate full path");
5546 _dbus_string_free (&filename);
5547 if (!_dbus_string_init (&filename))
5548 _dbus_assert_not_reached ("didn't allocate filename string\n");
5550 dbus_error_init (&error);
5551 dir = _dbus_directory_open (&test_directory, &error);
5554 _dbus_warn ("Could not open %s: %s\n",
5555 _dbus_string_get_const_data (&test_directory),
5557 dbus_error_free (&error);
5561 printf ("Testing:\n");
5564 while (_dbus_directory_get_next_file (dir, &filename, &error))
5566 DBusString full_path;
5569 if (!_dbus_string_init (&full_path))
5570 _dbus_assert_not_reached ("couldn't init string");
5572 if (!_dbus_string_copy (&test_directory, 0, &full_path, 0))
5573 _dbus_assert_not_reached ("couldn't copy dir to full_path");
5575 if (!_dbus_concat_dir_and_file (&full_path, &filename))
5576 _dbus_assert_not_reached ("couldn't concat file to dir");
5578 if (_dbus_string_ends_with_c_str (&filename, ".message"))
5580 else if (_dbus_string_ends_with_c_str (&filename, ".message-raw"))
5584 _dbus_verbose ("Skipping non-.message file %s\n",
5585 _dbus_string_get_const_data (&filename));
5586 _dbus_string_free (&full_path);
5591 _dbus_string_get_const_data (&filename));
5593 _dbus_verbose (" expecting %s\n",
5594 validity == _DBUS_MESSAGE_VALID ? "valid" :
5595 (validity == _DBUS_MESSAGE_INVALID ? "invalid" :
5596 (validity == _DBUS_MESSAGE_INCOMPLETE ? "incomplete" : "unknown")));
5598 if (! (*function) (&full_path, is_raw, validity, user_data))
5600 _dbus_string_free (&full_path);
5604 _dbus_string_free (&full_path);
5607 if (dbus_error_is_set (&error))
5609 _dbus_warn ("Could not get next file in %s: %s\n",
5610 _dbus_string_get_const_data (&test_directory),
5612 dbus_error_free (&error);
5621 _dbus_directory_close (dir);
5622 _dbus_string_free (&test_directory);
5623 _dbus_string_free (&filename);
5629 * Runs the given function on every message file in the test suite.
5630 * The function should return #FALSE on test failure or fatal error.
5632 * @param test_data_dir root dir of the test suite data files (top_srcdir/test/data)
5633 * @param func the function to run
5634 * @param user_data data for function
5635 * @returns #FALSE if there's a failure
5638 dbus_internal_do_not_use_foreach_message_file (const char *test_data_dir,
5639 DBusForeachMessageFileFunc func,
5642 DBusString test_directory;
5647 _dbus_string_init_const (&test_directory, test_data_dir);
5649 if (!process_test_subdir (&test_directory, "valid-messages",
5650 _DBUS_MESSAGE_VALID, func, user_data))
5653 if (!process_test_subdir (&test_directory, "invalid-messages",
5654 _DBUS_MESSAGE_INVALID, func, user_data))
5657 if (!process_test_subdir (&test_directory, "incomplete-messages",
5658 _DBUS_MESSAGE_INCOMPLETE, func, user_data))
5665 _dbus_string_free (&test_directory);
5671 verify_test_message (DBusMessage *message)
5673 DBusMessageIter iter, dict;
5675 dbus_int32_t our_int;
5678 dbus_bool_t our_bool;
5679 dbus_uint32_t our_uint32;
5680 dbus_int32_t *our_uint32_array;
5681 int our_uint32_array_len;
5682 dbus_int32_t *our_int32_array;
5683 int our_int32_array_len;
5684 char **our_string_array;
5685 int our_string_array_len;
5686 #ifdef DBUS_HAVE_INT64
5687 dbus_int64_t our_int64;
5688 dbus_uint64_t our_uint64;
5689 dbus_int64_t *our_uint64_array;
5690 int our_uint64_array_len;
5691 dbus_int64_t *our_int64_array;
5692 int our_int64_array_len;
5694 double *our_double_array;
5695 int our_double_array_len;
5696 unsigned char *our_byte_array;
5697 int our_byte_array_len;
5698 unsigned char *our_boolean_array;
5699 int our_boolean_array_len;
5701 dbus_message_iter_init (message, &iter);
5703 dbus_error_init (&error);
5704 if (!dbus_message_iter_get_args (&iter, &error,
5705 DBUS_TYPE_INT32, &our_int,
5706 #ifdef DBUS_HAVE_INT64
5707 DBUS_TYPE_INT64, &our_int64,
5708 DBUS_TYPE_UINT64, &our_uint64,
5710 DBUS_TYPE_STRING, &our_str,
5711 DBUS_TYPE_DOUBLE, &our_double,
5712 DBUS_TYPE_BOOLEAN, &our_bool,
5713 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32,
5714 &our_uint32_array, &our_uint32_array_len,
5715 DBUS_TYPE_ARRAY, DBUS_TYPE_INT32,
5716 &our_int32_array, &our_int32_array_len,
5717 #ifdef DBUS_HAVE_INT64
5718 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT64,
5719 &our_uint64_array, &our_uint64_array_len,
5720 DBUS_TYPE_ARRAY, DBUS_TYPE_INT64,
5721 &our_int64_array, &our_int64_array_len,
5723 DBUS_TYPE_ARRAY, DBUS_TYPE_STRING,
5724 &our_string_array, &our_string_array_len,
5725 DBUS_TYPE_ARRAY, DBUS_TYPE_DOUBLE,
5726 &our_double_array, &our_double_array_len,
5727 DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE,
5728 &our_byte_array, &our_byte_array_len,
5729 DBUS_TYPE_ARRAY, DBUS_TYPE_BOOLEAN,
5730 &our_boolean_array, &our_boolean_array_len,
5733 _dbus_warn ("error: %s - %s\n", error.name,
5734 (error.message != NULL) ? error.message : "no message");
5735 _dbus_assert_not_reached ("Could not get arguments");
5738 if (our_int != -0x12345678)
5739 _dbus_assert_not_reached ("integers differ!");
5741 #ifdef DBUS_HAVE_INT64
5742 if (our_int64 != -0x123456789abcd)
5743 _dbus_assert_not_reached ("64-bit integers differ!");
5744 if (our_uint64 != 0x123456789abcd)
5745 _dbus_assert_not_reached ("64-bit unsigned integers differ!");
5748 if (our_double != 3.14159)
5749 _dbus_assert_not_reached ("doubles differ!");
5751 if (strcmp (our_str, "Test string") != 0)
5752 _dbus_assert_not_reached ("strings differ!");
5753 dbus_free (our_str);
5756 _dbus_assert_not_reached ("booleans differ");
5758 if (our_uint32_array_len != 4 ||
5759 our_uint32_array[0] != 0x12345678 ||
5760 our_uint32_array[1] != 0x23456781 ||
5761 our_uint32_array[2] != 0x34567812 ||
5762 our_uint32_array[3] != 0x45678123)
5763 _dbus_assert_not_reached ("uint array differs");
5764 dbus_free (our_uint32_array);
5766 if (our_int32_array_len != 4 ||
5767 our_int32_array[0] != 0x12345678 ||
5768 our_int32_array[1] != -0x23456781 ||
5769 our_int32_array[2] != 0x34567812 ||
5770 our_int32_array[3] != -0x45678123)
5771 _dbus_assert_not_reached ("int array differs");
5772 dbus_free (our_int32_array);
5774 #ifdef DBUS_HAVE_INT64
5775 if (our_uint64_array_len != 4 ||
5776 our_uint64_array[0] != 0x12345678 ||
5777 our_uint64_array[1] != 0x23456781 ||
5778 our_uint64_array[2] != 0x34567812 ||
5779 our_uint64_array[3] != 0x45678123)
5780 _dbus_assert_not_reached ("uint64 array differs");
5781 dbus_free (our_uint64_array);
5783 if (our_int64_array_len != 4 ||
5784 our_int64_array[0] != 0x12345678 ||
5785 our_int64_array[1] != -0x23456781 ||
5786 our_int64_array[2] != 0x34567812 ||
5787 our_int64_array[3] != -0x45678123)
5788 _dbus_assert_not_reached ("int64 array differs");
5789 dbus_free (our_int64_array);
5790 #endif /* DBUS_HAVE_INT64 */
5792 if (our_string_array_len != 4)
5793 _dbus_assert_not_reached ("string array has wrong length");
5795 if (strcmp (our_string_array[0], "Foo") != 0 ||
5796 strcmp (our_string_array[1], "bar") != 0 ||
5797 strcmp (our_string_array[2], "") != 0 ||
5798 strcmp (our_string_array[3], "woo woo woo woo") != 0)
5799 _dbus_assert_not_reached ("string array differs");
5801 dbus_free_string_array (our_string_array);
5803 if (our_double_array_len != 3)
5804 _dbus_assert_not_reached ("double array had wrong length");
5806 /* On all IEEE machines (i.e. everything sane) exact equality
5807 * should be preserved over the wire
5809 if (our_double_array[0] != 0.1234 ||
5810 our_double_array[1] != 9876.54321 ||
5811 our_double_array[2] != -300.0)
5812 _dbus_assert_not_reached ("double array had wrong values");
5814 dbus_free (our_double_array);
5816 if (our_byte_array_len != 4)
5817 _dbus_assert_not_reached ("byte array had wrong length");
5819 if (our_byte_array[0] != 'a' ||
5820 our_byte_array[1] != 'b' ||
5821 our_byte_array[2] != 'c' ||
5822 our_byte_array[3] != 234)
5823 _dbus_assert_not_reached ("byte array had wrong values");
5825 dbus_free (our_byte_array);
5827 if (our_boolean_array_len != 5)
5828 _dbus_assert_not_reached ("bool array had wrong length");
5830 if (our_boolean_array[0] != TRUE ||
5831 our_boolean_array[1] != FALSE ||
5832 our_boolean_array[2] != TRUE ||
5833 our_boolean_array[3] != TRUE ||
5834 our_boolean_array[4] != FALSE)
5835 _dbus_assert_not_reached ("bool array had wrong values");
5837 dbus_free (our_boolean_array);
5839 if (!dbus_message_iter_next (&iter))
5840 _dbus_assert_not_reached ("Reached end of arguments");
5842 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DICT)
5843 _dbus_assert_not_reached ("not dict type");
5845 if (!dbus_message_iter_init_dict_iterator (&iter, &dict))
5846 _dbus_assert_not_reached ("dict iter failed");
5848 our_str = dbus_message_iter_get_dict_key (&dict);
5849 if (our_str == NULL || strcmp (our_str, "test") != 0)
5850 _dbus_assert_not_reached ("wrong dict key");
5851 dbus_free (our_str);
5853 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_UINT32)
5855 _dbus_verbose ("dict entry type: %d\n", dbus_message_iter_get_arg_type (&dict));
5856 _dbus_assert_not_reached ("wrong dict entry type");
5859 if ((our_uint32 = dbus_message_iter_get_uint32 (&dict)) != 0xDEADBEEF)
5861 _dbus_verbose ("dict entry val: %x\n", our_uint32);
5862 _dbus_assert_not_reached ("wrong dict entry value");
5865 if (dbus_message_iter_next (&dict))
5866 _dbus_assert_not_reached ("Didn't reach end of dict");
5868 if (!dbus_message_iter_next (&iter))
5869 _dbus_assert_not_reached ("Reached end of arguments");
5871 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_UINT32)
5872 _dbus_assert_not_reached ("wrong type after dict");
5874 if (dbus_message_iter_get_uint32 (&iter) != 0xCAFEBABE)
5875 _dbus_assert_not_reached ("wrong value after dict");
5877 if (dbus_message_iter_next (&iter))
5878 _dbus_assert_not_reached ("Didn't reach end of arguments");
5882 * @ingroup DBusMessageInternals
5883 * Unit test for DBusMessage.
5885 * @returns #TRUE on success.
5888 _dbus_message_test (const char *test_data_dir)
5890 DBusMessage *message;
5891 DBusMessageLoader *loader;
5892 DBusMessageIter iter, child_iter, child_iter2, child_iter3;
5898 const dbus_uint32_t our_uint32_array[] =
5899 { 0x12345678, 0x23456781, 0x34567812, 0x45678123 };
5900 const dbus_uint32_t our_int32_array[] =
5901 { 0x12345678, -0x23456781, 0x34567812, -0x45678123 };
5902 #ifdef DBUS_HAVE_INT64
5903 const dbus_uint64_t our_uint64_array[] =
5904 { 0x12345678, 0x23456781, 0x34567812, 0x45678123 };
5905 const dbus_uint64_t our_int64_array[] =
5906 { 0x12345678, -0x23456781, 0x34567812, -0x45678123 };
5908 const char *our_string_array[] = { "Foo", "bar", "", "woo woo woo woo" };
5909 const double our_double_array[] = { 0.1234, 9876.54321, -300.0 };
5910 const unsigned char our_byte_array[] = { 'a', 'b', 'c', 234 };
5911 const unsigned char our_boolean_array[] = { TRUE, FALSE, TRUE, TRUE, FALSE };
5913 _dbus_assert (sizeof (DBusMessageRealIter) <= sizeof (DBusMessageIter));
5915 message = dbus_message_new_method_call ("test.Message", "org.freedesktop.DBus.Test");
5916 _dbus_assert (dbus_message_has_destination (message, "org.freedesktop.DBus.Test"));
5917 _dbus_message_set_serial (message, 1234);
5918 dbus_message_set_sender (message, "org.foo.bar");
5919 _dbus_assert (dbus_message_has_sender (message, "org.foo.bar"));
5920 dbus_message_set_sender (message, NULL);
5921 _dbus_assert (!dbus_message_has_sender (message, "org.foo.bar"));
5922 _dbus_assert (dbus_message_get_serial (message) == 1234);
5923 _dbus_assert (dbus_message_has_destination (message, "org.freedesktop.DBus.Test"));
5925 _dbus_assert (dbus_message_get_no_reply (message) == FALSE);
5926 dbus_message_set_no_reply (message, TRUE);
5927 _dbus_assert (dbus_message_get_no_reply (message) == TRUE);
5928 dbus_message_set_no_reply (message, FALSE);
5929 _dbus_assert (dbus_message_get_no_reply (message) == FALSE);
5931 dbus_message_unref (message);
5933 /* Test the vararg functions */
5934 message = dbus_message_new_method_call ("test.Message", "org.freedesktop.DBus.Test");
5935 _dbus_message_set_serial (message, 1);
5936 dbus_message_append_args (message,
5937 DBUS_TYPE_INT32, -0x12345678,
5938 #ifdef DBUS_HAVE_INT64
5939 DBUS_TYPE_INT64, -0x123456789abcd,
5940 DBUS_TYPE_UINT64, 0x123456789abcd,
5942 DBUS_TYPE_STRING, "Test string",
5943 DBUS_TYPE_DOUBLE, 3.14159,
5944 DBUS_TYPE_BOOLEAN, TRUE,
5945 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, our_uint32_array,
5946 _DBUS_N_ELEMENTS (our_uint32_array),
5947 DBUS_TYPE_ARRAY, DBUS_TYPE_INT32, our_int32_array,
5948 _DBUS_N_ELEMENTS (our_int32_array),
5949 #ifdef DBUS_HAVE_INT64
5950 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT64, our_uint64_array,
5951 _DBUS_N_ELEMENTS (our_uint64_array),
5952 DBUS_TYPE_ARRAY, DBUS_TYPE_INT64, our_int64_array,
5953 _DBUS_N_ELEMENTS (our_int64_array),
5955 DBUS_TYPE_ARRAY, DBUS_TYPE_STRING, our_string_array,
5956 _DBUS_N_ELEMENTS (our_string_array),
5957 DBUS_TYPE_ARRAY, DBUS_TYPE_DOUBLE, our_double_array,
5958 _DBUS_N_ELEMENTS (our_double_array),
5959 DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, our_byte_array,
5960 _DBUS_N_ELEMENTS (our_byte_array),
5961 DBUS_TYPE_ARRAY, DBUS_TYPE_BOOLEAN, our_boolean_array,
5962 _DBUS_N_ELEMENTS (our_boolean_array),
5965 dbus_message_append_iter_init (message, &iter);
5966 dbus_message_iter_append_dict (&iter, &child_iter);
5967 dbus_message_iter_append_dict_key (&child_iter, "test");
5968 dbus_message_iter_append_uint32 (&child_iter, 0xDEADBEEF);
5969 dbus_message_iter_append_uint32 (&iter, 0xCAFEBABE);
5971 _dbus_verbose_bytes_of_string (&message->header, 0,
5972 _dbus_string_get_length (&message->header));
5973 _dbus_verbose_bytes_of_string (&message->body, 0,
5974 _dbus_string_get_length (&message->body));
5976 verify_test_message (message);
5978 copy = dbus_message_copy (message);
5980 _dbus_assert (message->client_serial == copy->client_serial);
5981 _dbus_assert (message->reply_serial == copy->reply_serial);
5982 _dbus_assert (message->header_padding == copy->header_padding);
5984 _dbus_assert (_dbus_string_get_length (&message->header) ==
5985 _dbus_string_get_length (©->header));
5987 _dbus_assert (_dbus_string_get_length (&message->body) ==
5988 _dbus_string_get_length (©->body));
5990 verify_test_message (copy);
5992 name1 = dbus_message_get_name (message);
5993 name2 = dbus_message_get_name (copy);
5995 _dbus_assert (strcmp (name1, name2) == 0);
5997 dbus_message_unref (message);
5998 dbus_message_unref (copy);
6000 message = dbus_message_new_method_call ("test.Message", "org.freedesktop.DBus.Test");
6001 _dbus_message_set_serial (message, 1);
6002 dbus_message_set_reply_serial (message, 0x12345678);
6004 dbus_message_append_iter_init (message, &iter);
6005 dbus_message_iter_append_string (&iter, "Test string");
6006 dbus_message_iter_append_int32 (&iter, -0x12345678);
6007 dbus_message_iter_append_uint32 (&iter, 0xedd1e);
6008 dbus_message_iter_append_double (&iter, 3.14159);
6010 dbus_message_iter_append_array (&iter, &child_iter, DBUS_TYPE_DOUBLE);
6011 dbus_message_iter_append_double (&child_iter, 1.5);
6012 dbus_message_iter_append_double (&child_iter, 2.5);
6015 dbus_message_iter_append_dict (&iter, &child_iter);
6016 dbus_message_iter_append_dict_key (&child_iter, "test");
6017 dbus_message_iter_append_uint32 (&child_iter, 0xDEADBEEF);
6019 /* array of array of int32 (in dict) */
6020 dbus_message_iter_append_dict_key (&child_iter, "array");
6021 dbus_message_iter_append_array (&child_iter, &child_iter2, DBUS_TYPE_ARRAY);
6022 dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_INT32);
6023 dbus_message_iter_append_int32 (&child_iter3, 0x12345678);
6024 dbus_message_iter_append_int32 (&child_iter3, 0x23456781);
6025 _dbus_warn ("next call expected to fail with wrong array type\n");
6026 _dbus_assert (!dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_UINT32));
6027 dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_INT32);
6028 dbus_message_iter_append_int32 (&child_iter3, 0x34567812);
6029 dbus_message_iter_append_int32 (&child_iter3, 0x45678123);
6030 dbus_message_iter_append_int32 (&child_iter3, 0x56781234);
6032 dbus_message_iter_append_byte (&iter, 0xF0);
6034 dbus_message_iter_append_nil (&iter);
6036 dbus_message_iter_append_named (&iter, "named",
6039 message_iter_test (message);
6041 /* Message loader test */
6042 _dbus_message_lock (message);
6043 loader = _dbus_message_loader_new ();
6045 /* check ref/unref */
6046 _dbus_message_loader_ref (loader);
6047 _dbus_message_loader_unref (loader);
6049 /* Write the header data one byte at a time */
6050 data = _dbus_string_get_const_data (&message->header);
6051 for (i = 0; i < _dbus_string_get_length (&message->header); i++)
6055 _dbus_message_loader_get_buffer (loader, &buffer);
6056 _dbus_string_append_byte (buffer, data[i]);
6057 _dbus_message_loader_return_buffer (loader, buffer, 1);
6060 /* Write the body data one byte at a time */
6061 data = _dbus_string_get_const_data (&message->body);
6062 for (i = 0; i < _dbus_string_get_length (&message->body); i++)
6066 _dbus_message_loader_get_buffer (loader, &buffer);
6067 _dbus_string_append_byte (buffer, data[i]);
6068 _dbus_message_loader_return_buffer (loader, buffer, 1);
6071 dbus_message_unref (message);
6073 /* Now pop back the message */
6074 if (!_dbus_message_loader_queue_messages (loader))
6075 _dbus_assert_not_reached ("no memory to queue messages");
6077 if (_dbus_message_loader_get_is_corrupted (loader))
6078 _dbus_assert_not_reached ("message loader corrupted");
6080 message = _dbus_message_loader_pop_message (loader);
6082 _dbus_assert_not_reached ("received a NULL message");
6084 if (dbus_message_get_reply_serial (message) != 0x12345678)
6085 _dbus_assert_not_reached ("reply serial fields differ");
6087 message_iter_test (message);
6089 dbus_message_unref (message);
6090 _dbus_message_loader_unref (loader);
6092 /* Now load every message in test_data_dir if we have one */
6093 if (test_data_dir == NULL)
6096 return dbus_internal_do_not_use_foreach_message_file (test_data_dir,
6097 (DBusForeachMessageFileFunc)
6098 dbus_internal_do_not_use_try_message_file,
6102 #endif /* DBUS_BUILD_TESTS */