1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* dbus-message.c DBusMessage object
4 * Copyright (C) 2002, 2003 Red Hat Inc.
5 * Copyright (C) 2002, 2003 CodeFactory AB
7 * Licensed under the Academic Free License version 1.2
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include "dbus-internals.h"
26 #include "dbus-marshal.h"
27 #include "dbus-message.h"
28 #include "dbus-message-internal.h"
29 #include "dbus-memory.h"
30 #include "dbus-list.h"
31 #include "dbus-message-builder.h"
35 * @defgroup DBusMessageInternals DBusMessage implementation details
36 * @ingroup DBusInternals
37 * @brief DBusMessage private implementation details.
39 * The guts of DBusMessage and its methods.
57 static dbus_bool_t field_is_named[FIELD_LAST] =
59 FALSE, /* FIELD_HEADER_LENGTH */
60 FALSE, /* FIELD_BODY_LENGTH */
61 FALSE, /* FIELD_CLIENT_SERIAL */
62 TRUE, /* FIELD_NAME */
63 TRUE, /* FIELD_SERVICE */
64 TRUE, /* FIELD_SENDER */
65 TRUE /* FIELD_REPLY_SERIAL */
70 int offset; /**< Offset to start of field (location of name of field
76 * @brief Internals of DBusMessage
78 * Object representing a message received from or to be sent to
79 * another application. This is an opaque object, all members
84 dbus_atomic_t refcount; /**< Reference count */
86 DBusString header; /**< Header network data, stored
87 * separately from body so we can
88 * independently realloc it.
91 HeaderField header_fields[FIELD_LAST]; /**< Track the location
92 * of each field in "header"
95 dbus_int32_t client_serial; /**< Cached client serial value for speed */
96 dbus_int32_t reply_serial; /**< Cached reply serial value for speed */
98 int header_padding; /**< bytes of alignment in header */
100 DBusString body; /**< Body network data. */
102 char byte_order; /**< Message byte order. */
104 DBusCounter *size_counter; /**< Counter for the size of the message, or #NULL */
105 long size_counter_delta; /**< Size we incremented the size counter by. */
107 dbus_uint32_t changed_stamp;
109 unsigned int locked : 1; /**< Message being sent, no modifications allowed. */
113 DBUS_MESSAGE_ITER_TYPE_MESSAGE,
114 DBUS_MESSAGE_ITER_TYPE_ARRAY,
115 DBUS_MESSAGE_ITER_TYPE_DICT
118 typedef struct DBusMessageRealIter DBusMessageRealIter;
121 * @brief Internals of DBusMessageIter
123 * Object representing a position in a message. All fields are internal.
125 struct DBusMessageRealIter
127 DBusMessageRealIter *parent_iter; /**< parent iter, or NULL */
128 DBusMessage *message; /**< Message used */
129 dbus_uint32_t changed_stamp; /**< stamp to detect invalid iters */
131 /* This is an int instead of an enum to get a guaranteed size for the dummy: */
132 int type; /**< type of iter */
134 int pos; /**< Current position in the string */
135 int end; /**< position right after the container */
136 int container_start; /**< offset of the start of the container */
137 int container_length_pos; /**< offset of the length of the container */
139 int wrote_dict_key; /**< whether we wrote the dict key for the current dict element */
141 int array_type_pos; /**< pointer to the position of the array element type */
142 int array_type_done; /**< TRUE if the array type is fully finished */
146 * Gets the data to be sent over the network for this message.
147 * The header and then the body should be written out.
148 * This function is guaranteed to always return the same
149 * data once a message is locked (with _dbus_message_lock()).
151 * @param message the message.
152 * @param header return location for message header data.
153 * @param body return location for message body data.
156 _dbus_message_get_network_data (DBusMessage *message,
157 const DBusString **header,
158 const DBusString **body)
160 _dbus_assert (message->locked);
162 *header = &message->header;
163 *body = &message->body;
167 clear_header_padding (DBusMessage *message)
169 _dbus_string_shorten (&message->header,
170 message->header_padding);
171 message->header_padding = 0;
175 append_header_padding (DBusMessage *message)
178 old_len = _dbus_string_get_length (&message->header);
179 if (!_dbus_string_align_length (&message->header, 8))
182 message->header_padding = _dbus_string_get_length (&message->header) - old_len;
188 adjust_field_offsets (DBusMessage *message,
198 while (i < FIELD_LAST)
200 if (message->header_fields[i].offset > offsets_after)
201 message->header_fields[i].offset += delta;
208 get_string_field (DBusMessage *message,
215 offset = message->header_fields[field].offset;
217 _dbus_assert (field < FIELD_LAST);
222 /* offset points to string length, string data follows it */
223 /* FIXME _dbus_demarshal_const_string() that returned
224 * a reference to the string plus its len might be nice.
228 *len = _dbus_demarshal_uint32 (&message->header,
233 data = _dbus_string_get_const_data (&message->header);
235 return data + (offset + 4);
239 get_int_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_int32 (&message->header,
258 append_int_field (DBusMessage *message,
265 _dbus_assert (!message->locked);
267 clear_header_padding (message);
269 orig_len = _dbus_string_get_length (&message->header);
271 if (!_dbus_string_align_length (&message->header, 4))
274 if (!_dbus_string_append_len (&message->header, name, 4))
277 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_INT32))
280 if (!_dbus_string_align_length (&message->header, 4))
283 message->header_fields[FIELD_REPLY_SERIAL].offset =
284 _dbus_string_get_length (&message->header);
286 if (!_dbus_marshal_int32 (&message->header, message->byte_order,
290 if (!append_header_padding (message))
296 message->header_fields[field].offset = -1;
297 _dbus_string_set_length (&message->header, orig_len);
299 /* this must succeed because it was allocated on function entry and
300 * DBusString doesn't ever realloc smaller
302 if (!append_header_padding (message))
303 _dbus_assert_not_reached ("failed to reappend header padding");
308 append_string_field (DBusMessage *message,
315 _dbus_assert (!message->locked);
317 clear_header_padding (message);
319 orig_len = _dbus_string_get_length (&message->header);
321 if (!_dbus_string_align_length (&message->header, 4))
324 if (!_dbus_string_append_len (&message->header, name, 4))
327 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_STRING))
330 if (!_dbus_string_align_length (&message->header, 4))
333 message->header_fields[field].offset =
334 _dbus_string_get_length (&message->header);
336 if (!_dbus_marshal_string (&message->header, message->byte_order,
340 if (!append_header_padding (message))
346 message->header_fields[field].offset = -1;
347 _dbus_string_set_length (&message->header, orig_len);
349 /* this must succeed because it was allocated on function entry and
350 * DBusString doesn't ever realloc smaller
352 if (!append_header_padding (message))
353 _dbus_assert_not_reached ("failed to reappend header padding");
358 #ifdef DBUS_BUILD_TESTS
359 /* This isn't used, but building it when tests are enabled just to
360 * keep it compiling if we need it in future
363 delete_int_field (DBusMessage *message,
366 int offset = message->header_fields[field].offset;
368 _dbus_assert (!message->locked);
369 _dbus_assert (field_is_named[field]);
374 clear_header_padding (message);
376 /* The field typecode and name take up 8 bytes */
377 _dbus_string_delete (&message->header,
381 message->header_fields[field].offset = -1;
383 adjust_field_offsets (message,
387 append_header_padding (message);
392 delete_string_field (DBusMessage *message,
395 int offset = message->header_fields[field].offset;
399 _dbus_assert (!message->locked);
400 _dbus_assert (field_is_named[field]);
405 clear_header_padding (message);
407 get_string_field (message, field, &len);
409 /* The field typecode and name take up 8 bytes, and the nul
410 * termination is 1 bytes, string length integer is 4 bytes
412 delete_len = 8 + 4 + 1 + len;
414 _dbus_string_delete (&message->header,
418 message->header_fields[field].offset = -1;
420 adjust_field_offsets (message,
424 append_header_padding (message);
428 set_int_field (DBusMessage *message,
432 int offset = message->header_fields[field].offset;
434 _dbus_assert (!message->locked);
438 /* need to append the field */
442 case FIELD_REPLY_SERIAL:
443 return append_int_field (message, field,
444 DBUS_HEADER_FIELD_REPLY,
447 _dbus_assert_not_reached ("appending an int field we don't support appending");
453 _dbus_marshal_set_int32 (&message->header,
462 set_uint_field (DBusMessage *message,
466 int offset = message->header_fields[field].offset;
468 _dbus_assert (!message->locked);
472 /* need to append the field */
477 _dbus_assert_not_reached ("appending a uint field we don't support appending");
483 _dbus_marshal_set_uint32 (&message->header,
492 set_string_field (DBusMessage *message,
496 int offset = message->header_fields[field].offset;
498 _dbus_assert (!message->locked);
499 _dbus_assert (value != NULL);
503 /* need to append the field */
508 return append_string_field (message, field,
509 DBUS_HEADER_FIELD_SENDER,
512 _dbus_assert_not_reached ("appending a string field we don't support appending");
523 clear_header_padding (message);
525 old_len = _dbus_string_get_length (&message->header);
527 len = strlen (value);
529 _dbus_string_init_const_len (&v, value,
530 len + 1); /* include nul */
531 if (!_dbus_marshal_set_string (&message->header,
537 new_len = _dbus_string_get_length (&message->header);
539 adjust_field_offsets (message,
543 if (!append_header_padding (message))
549 /* this must succeed because it was allocated on function entry and
550 * DBusString doesn't ever realloc smaller
552 if (!append_header_padding (message))
553 _dbus_assert_not_reached ("failed to reappend header padding");
560 * Sets the serial number of a message.
561 * This can only be done once on a message.
563 * @param message the message
564 * @param serial the serial
567 _dbus_message_set_serial (DBusMessage *message,
570 _dbus_assert (!message->locked);
571 _dbus_assert (dbus_message_get_serial (message) < 0);
573 set_int_field (message, FIELD_CLIENT_SERIAL,
575 message->client_serial = serial;
579 * Sets the reply serial of a message (the client serial
580 * of the message this is a reply to).
582 * @param message the message
583 * @param reply_serial the client serial
584 * @returns #FALSE if not enough memory
587 dbus_message_set_reply_serial (DBusMessage *message,
588 dbus_int32_t reply_serial)
590 _dbus_assert (!message->locked);
592 if (set_int_field (message, FIELD_REPLY_SERIAL,
595 message->reply_serial = reply_serial;
603 * Returns the serial of a message or -1 if none has been specified.
604 * The message's serial number is provided by the application sending
605 * the message and is used to identify replies to this message.
607 * @param message the message
608 * @returns the client serial
611 dbus_message_get_serial (DBusMessage *message)
613 return message->client_serial;
617 * Returns the serial that the message is
618 * a reply to or -1 if none.
620 * @param message the message
621 * @returns the reply serial
624 dbus_message_get_reply_serial (DBusMessage *message)
626 return message->reply_serial;
630 * Adds a counter to be incremented immediately with the
631 * size of this message, and decremented by the size
632 * of this message when this message if finalized.
634 * @param message the message
635 * @param counter the counter
638 _dbus_message_add_size_counter (DBusMessage *message,
639 DBusCounter *counter)
641 _dbus_assert (message->size_counter == NULL); /* If this fails we may need to keep a list of
642 * counters instead of just one
645 message->size_counter = counter;
646 _dbus_counter_ref (message->size_counter);
648 /* When we can change message size, we may want to
649 * update this each time we do so, or we may want to
650 * just KISS like this.
652 message->size_counter_delta =
653 _dbus_string_get_length (&message->header) +
654 _dbus_string_get_length (&message->body);
657 _dbus_verbose ("message has size %ld\n",
658 message->size_counter_delta);
661 _dbus_counter_adjust (message->size_counter, message->size_counter_delta);
665 dbus_message_create_header (DBusMessage *message,
671 if (!_dbus_string_append_byte (&message->header, message->byte_order))
675 if (!_dbus_string_append_byte (&message->header, flags))
678 if (!_dbus_string_append_byte (&message->header, DBUS_MAJOR_PROTOCOL_VERSION))
681 if (!_dbus_string_append_byte (&message->header, 0))
684 message->header_fields[FIELD_HEADER_LENGTH].offset = 4;
685 if (!_dbus_marshal_uint32 (&message->header, message->byte_order, 0))
688 message->header_fields[FIELD_BODY_LENGTH].offset = 8;
689 if (!_dbus_marshal_uint32 (&message->header, message->byte_order, 0))
692 message->header_fields[FIELD_CLIENT_SERIAL].offset = 12;
693 if (!_dbus_marshal_int32 (&message->header, message->byte_order, -1))
696 /* Marshal message service */
699 if (!append_string_field (message,
701 DBUS_HEADER_FIELD_SERVICE,
706 _dbus_assert (name != NULL);
707 if (!append_string_field (message,
709 DBUS_HEADER_FIELD_NAME,
717 * Locks a message. Allows checking that applications don't keep a
718 * reference to a message in the outgoing queue and change it
719 * underneath us. Messages are locked when they enter the outgoing
720 * queue (dbus_connection_send_message()), and the library complains
721 * if the message is modified while locked.
723 * @param message the message to lock.
726 _dbus_message_lock (DBusMessage *message)
728 if (!message->locked)
730 /* Fill in our lengths */
731 set_uint_field (message,
733 _dbus_string_get_length (&message->header));
735 set_uint_field (message,
737 _dbus_string_get_length (&message->body));
739 message->locked = TRUE;
746 * @defgroup DBusMessage DBusMessage
748 * @brief Message to be sent or received over a DBusConnection.
750 * A DBusMessage is the most basic unit of communication over a
751 * DBusConnection. A DBusConnection represents a stream of messages
752 * received from a remote application, and a stream of messages
753 * sent to a remote application.
759 * @typedef DBusMessage
761 * Opaque data type representing a message received from or to be
762 * sent to another application.
766 dbus_message_new_empty_header (void)
768 DBusMessage *message;
771 message = dbus_new0 (DBusMessage, 1);
775 message->refcount = 1;
776 message->byte_order = DBUS_COMPILER_BYTE_ORDER;
777 message->client_serial = -1;
778 message->reply_serial = -1;
781 while (i < FIELD_LAST)
783 message->header_fields[i].offset = -1;
787 if (!_dbus_string_init (&message->header))
793 if (!_dbus_string_init (&message->body))
795 _dbus_string_free (&message->header);
805 * Constructs a new message. Returns #NULL if memory can't be
806 * allocated for the message. The service may be #NULL in which case
807 * no service is set; this is appropriate when using D-BUS in a
808 * peer-to-peer context (no message bus).
810 * @todo reverse the arguments, first 'name' then 'service'
811 * as 'name' is more fundamental
813 * @param service service that the message should be sent to or #NULL
814 * @param name name of the message
815 * @returns a new DBusMessage, free with dbus_message_unref()
816 * @see dbus_message_unref()
819 dbus_message_new (const char *service,
822 DBusMessage *message;
824 message = dbus_message_new_empty_header ();
828 if (!dbus_message_create_header (message, service, name))
830 dbus_message_unref (message);
838 * Constructs a message that is a reply to some other
839 * message. Returns #NULL if memory can't be allocated
842 * @param original_message the message which the created
843 * message is a reply to.
844 * @returns a new DBusMessage, free with dbus_message_unref()
845 * @see dbus_message_new(), dbus_message_unref()
848 dbus_message_new_reply (DBusMessage *original_message)
850 DBusMessage *message;
851 const char *sender, *name;
853 sender = get_string_field (original_message,
855 name = get_string_field (original_message,
858 /* sender is allowed to be null here in peer-to-peer case */
860 message = dbus_message_new (sender, name);
865 if (!dbus_message_set_reply_serial (message,
866 dbus_message_get_serial (original_message)))
868 dbus_message_unref (message);
876 * Creates a new message that is an error reply to a certain message.
878 * @param original_message the original message
879 * @param error_name the error name
880 * @param error_message the error message string
881 * @returns a new error message
884 dbus_message_new_error_reply (DBusMessage *original_message,
885 const char *error_name,
886 const char *error_message)
888 DBusMessage *message;
890 DBusMessageIter iter;
892 sender = get_string_field (original_message,
895 _dbus_assert (sender != NULL);
897 message = dbus_message_new (sender, error_name);
902 if (!dbus_message_set_reply_serial (message,
903 dbus_message_get_serial (original_message)))
905 dbus_message_unref (message);
909 dbus_message_append_iter_init (message, &iter);
910 if (!dbus_message_iter_append_string (&iter, error_message))
912 dbus_message_unref (message);
916 dbus_message_set_is_error (message, TRUE);
922 * Creates a new message that is an exact replica of the message
923 * specified, except that its refcount is set to 1.
925 * @param message the message.
926 * @returns the new message.
929 dbus_message_copy (const DBusMessage *message)
934 retval = dbus_new0 (DBusMessage, 1);
938 retval->refcount = 1;
939 retval->byte_order = message->byte_order;
940 retval->client_serial = message->client_serial;
941 retval->reply_serial = message->reply_serial;
942 retval->header_padding = message->header_padding;
943 retval->locked = FALSE;
945 if (!_dbus_string_init (&retval->header))
951 if (!_dbus_string_init (&retval->body))
953 _dbus_string_free (&retval->header);
958 if (!_dbus_string_copy (&message->header, 0,
961 _dbus_string_free (&retval->header);
962 _dbus_string_free (&retval->body);
968 if (!_dbus_string_copy (&message->body, 0,
971 _dbus_string_free (&retval->header);
972 _dbus_string_free (&retval->body);
978 for (i = 0; i < FIELD_LAST; i++)
980 retval->header_fields[i].offset = message->header_fields[i].offset;
988 * Increments the reference count of a DBusMessage.
990 * @param message The message
991 * @see dbus_message_unref
994 dbus_message_ref (DBusMessage *message)
996 dbus_atomic_t refcount;
998 refcount = _dbus_atomic_inc (&message->refcount);
999 _dbus_assert (refcount > 1);
1003 * Decrements the reference count of a DBusMessage.
1005 * @param message The message
1006 * @see dbus_message_ref
1009 dbus_message_unref (DBusMessage *message)
1011 dbus_atomic_t refcount;
1013 refcount = _dbus_atomic_dec (&message->refcount);
1015 _dbus_assert (refcount >= 0);
1019 if (message->size_counter != NULL)
1021 _dbus_counter_adjust (message->size_counter,
1022 - message->size_counter_delta);
1023 _dbus_counter_unref (message->size_counter);
1026 _dbus_string_free (&message->header);
1027 _dbus_string_free (&message->body);
1029 dbus_free (message);
1034 * Gets the name of a message.
1036 * @param message the message
1037 * @returns the message name (should not be freed)
1040 dbus_message_get_name (DBusMessage *message)
1042 return get_string_field (message, FIELD_NAME, NULL);
1046 * Gets the destination service of a message.
1048 * @todo I think if we have set_sender/get_sender,
1049 * this function might be better named set_destination/
1050 * get_destination for clarity, as the sender
1051 * is also a service name.
1053 * @param message the message
1054 * @returns the message destination service (should not be freed)
1057 dbus_message_get_service (DBusMessage *message)
1059 return get_string_field (message, FIELD_SERVICE, NULL);
1063 * Appends fields to a message given a variable argument
1064 * list. The variable argument list should contain the type
1065 * of the argument followed by the value to add.
1066 * Array values are specified by a int typecode followed by a pointer
1067 * to the array followed by an int giving the length of the array.
1068 * The argument list must be terminated with 0.
1070 * This function doesn't support dicts or non-fundamental arrays.
1072 * @param message the message
1073 * @param first_arg_type type of the first argument
1074 * @param ... value of first argument, list of additional type-value pairs
1075 * @returns #TRUE on success
1078 dbus_message_append_args (DBusMessage *message,
1085 va_start (var_args, first_arg_type);
1086 retval = dbus_message_append_args_valist (message,
1095 * This function takes a va_list for use by language bindings
1097 * @todo: Shouldn't this function clean up the changes to the message
1100 * @see dbus_message_append_args.
1101 * @param message the message
1102 * @param first_arg_type type of first argument
1103 * @param var_args value of first argument, then list of type/value pairs
1104 * @returns #TRUE on success
1107 dbus_message_append_args_valist (DBusMessage *message,
1112 DBusMessageIter iter;
1114 old_len = _dbus_string_get_length (&message->body);
1116 type = first_arg_type;
1118 dbus_message_append_iter_init (message, &iter);
1125 if (!dbus_message_iter_append_nil (&iter))
1128 case DBUS_TYPE_BOOLEAN:
1129 if (!dbus_message_iter_append_boolean (&iter, va_arg (var_args, dbus_bool_t)))
1132 case DBUS_TYPE_INT32:
1133 if (!dbus_message_iter_append_int32 (&iter, va_arg (var_args, dbus_int32_t)))
1136 case DBUS_TYPE_UINT32:
1137 if (!dbus_message_iter_append_uint32 (&iter, va_arg (var_args, dbus_uint32_t)))
1140 case DBUS_TYPE_DOUBLE:
1141 if (!dbus_message_iter_append_double (&iter, va_arg (var_args, double)))
1144 case DBUS_TYPE_STRING:
1145 if (!dbus_message_iter_append_string (&iter, va_arg (var_args, const char *)))
1148 case DBUS_TYPE_NAMED:
1151 unsigned char *data;
1154 name = va_arg (var_args, const char *);
1155 data = va_arg (var_args, unsigned char *);
1156 len = va_arg (var_args, int);
1158 if (!dbus_message_iter_append_named (&iter, name, data, len))
1162 case DBUS_TYPE_ARRAY:
1167 type = va_arg (var_args, int);
1168 data = va_arg (var_args, void *);
1169 len = va_arg (var_args, int);
1173 case DBUS_TYPE_BYTE:
1174 if (!dbus_message_iter_append_byte_array (&iter, (unsigned char *)data, len))
1177 case DBUS_TYPE_BOOLEAN:
1178 if (!dbus_message_iter_append_boolean_array (&iter, (unsigned char *)data, len))
1181 case DBUS_TYPE_INT32:
1182 if (!dbus_message_iter_append_int32_array (&iter, (dbus_int32_t *)data, len))
1185 case DBUS_TYPE_UINT32:
1186 if (!dbus_message_iter_append_uint32_array (&iter, (dbus_uint32_t *)data, len))
1189 case DBUS_TYPE_DOUBLE:
1190 if (!dbus_message_iter_append_double_array (&iter, (double *)data, len))
1193 case DBUS_TYPE_STRING:
1194 if (!dbus_message_iter_append_string_array (&iter, (const char **)data, len))
1198 case DBUS_TYPE_ARRAY:
1199 case DBUS_TYPE_NAMED:
1200 case DBUS_TYPE_DICT:
1201 _dbus_warn ("dbus_message_append_args_valist doesn't support recursive arrays\n");
1204 _dbus_warn ("Unknown field type %d\n", type);
1210 case DBUS_TYPE_DICT:
1211 _dbus_warn ("dbus_message_append_args_valist doesn't support dicts\n");
1214 _dbus_warn ("Unknown field type %d\n", type);
1218 type = va_arg (var_args, int);
1229 * Gets arguments from a message given a variable argument list.
1230 * The variable argument list should contain the type of the
1231 * argumen followed by a pointer to where the value should be
1232 * stored. The list is terminated with 0.
1234 * @param message the message
1235 * @param error error to be filled in on failure
1236 * @param first_arg_type the first argument type
1237 * @param ... location for first argument value, then list of type-location pairs
1238 * @returns #FALSE if the error was set
1241 dbus_message_get_args (DBusMessage *message,
1249 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1251 va_start (var_args, first_arg_type);
1252 retval = dbus_message_get_args_valist (message, error, first_arg_type, var_args);
1259 * This function takes a va_list for use by language bindings
1261 * @todo We need to free the argument data when an error occurs.
1263 * @see dbus_message_get_args
1264 * @param message the message
1265 * @param error error to be filled in
1266 * @param first_arg_type type of the first argument
1267 * @param var_args return location for first argument, followed by list of type/location pairs
1268 * @returns #FALSE if error was set
1271 dbus_message_get_args_valist (DBusMessage *message,
1276 DBusMessageIter iter;
1278 dbus_message_iter_init (message, &iter);
1279 return dbus_message_iter_get_args_valist (&iter, error, first_arg_type, var_args);
1283 * Gets arguments from a message iterator given a variable argument list.
1284 * The variable argument list should contain the type of the
1285 * argumen followed by a pointer to where the value should be
1286 * stored. The list is terminated with 0.
1288 * @param iter the message iterator
1289 * @param error error to be filled in on failure
1290 * @param first_arg_type the first argument type
1291 * @param ... location for first argument value, then list of type-location pairs
1292 * @returns #FALSE if the error was set
1295 dbus_message_iter_get_args (DBusMessageIter *iter,
1303 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1305 va_start (var_args, first_arg_type);
1306 retval = dbus_message_iter_get_args_valist (iter, error, first_arg_type, var_args);
1313 * This function takes a va_list for use by language bindings
1315 * @todo this function (or some lower-level non-convenience function)
1316 * needs better error handling; should allow the application to
1317 * distinguish between out of memory, and bad data from the remote
1318 * app. It also needs to not leak a bunch of args when it gets
1319 * to the arg that's bad, as that would be a security hole
1320 * (allow one app to force another to leak memory)
1322 * @todo We need to free the argument data when an error occurs.
1324 * @see dbus_message_get_args
1325 * @param iter the message iter
1326 * @param error error to be filled in
1327 * @param first_arg_type type of the first argument
1328 * @param var_args return location for first argument, followed by list of type/location pairs
1329 * @returns #FALSE if error was set
1332 dbus_message_iter_get_args_valist (DBusMessageIter *iter,
1337 int spec_type, msg_type, i;
1340 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1344 spec_type = first_arg_type;
1347 while (spec_type != 0)
1349 msg_type = dbus_message_iter_get_arg_type (iter);
1351 if (msg_type != spec_type)
1353 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1354 "Argument %d is specified to be of type \"%s\", but "
1355 "is actually of type \"%s\"\n", i,
1356 _dbus_type_to_string (spec_type),
1357 _dbus_type_to_string (msg_type));
1366 case DBUS_TYPE_BYTE:
1370 ptr = va_arg (var_args, unsigned char *);
1372 *ptr = dbus_message_iter_get_byte (iter);
1375 case DBUS_TYPE_BOOLEAN:
1379 ptr = va_arg (var_args, dbus_bool_t *);
1381 *ptr = dbus_message_iter_get_boolean (iter);
1384 case DBUS_TYPE_INT32:
1388 ptr = va_arg (var_args, dbus_int32_t *);
1390 *ptr = dbus_message_iter_get_int32 (iter);
1393 case DBUS_TYPE_UINT32:
1397 ptr = va_arg (var_args, dbus_uint32_t *);
1399 *ptr = dbus_message_iter_get_uint32 (iter);
1403 case DBUS_TYPE_DOUBLE:
1407 ptr = va_arg (var_args, double *);
1409 *ptr = dbus_message_iter_get_double (iter);
1413 case DBUS_TYPE_STRING:
1417 ptr = va_arg (var_args, char **);
1419 *ptr = dbus_message_iter_get_string (iter);
1423 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1430 case DBUS_TYPE_NAMED:
1433 unsigned char **data;
1436 name = va_arg (var_args, char **);
1437 data = va_arg (var_args, unsigned char **);
1438 len = va_arg (var_args, int *);
1440 *name = dbus_message_iter_get_named (iter, data, len);
1443 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1448 case DBUS_TYPE_ARRAY:
1453 type = va_arg (var_args, int);
1454 data = va_arg (var_args, void *);
1455 len = va_arg (var_args, int *);
1457 if (dbus_message_iter_get_array_type (iter) != type)
1459 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1460 "Argument %d is specified to be of type \"array of %s\", but "
1461 "is actually of type \"array of %s\"\n", i,
1462 _dbus_type_to_string (type),
1463 _dbus_type_to_string (dbus_message_iter_get_array_type (iter)));
1469 case DBUS_TYPE_BYTE:
1470 if (!dbus_message_iter_get_byte_array (iter, (unsigned char **)data, len))
1472 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1476 case DBUS_TYPE_BOOLEAN:
1477 if (!dbus_message_iter_get_boolean_array (iter, (unsigned char **)data, len))
1479 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1483 case DBUS_TYPE_INT32:
1484 if (!dbus_message_iter_get_int32_array (iter, (dbus_int32_t **)data, len))
1486 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1490 case DBUS_TYPE_UINT32:
1491 if (!dbus_message_iter_get_uint32_array (iter, (dbus_uint32_t **)data, len))
1493 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1497 case DBUS_TYPE_DOUBLE:
1498 if (!dbus_message_iter_get_double_array (iter, (double **)data, len))
1500 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1504 case DBUS_TYPE_STRING:
1505 if (!dbus_message_iter_get_string_array (iter, (char ***)data, len))
1507 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1512 case DBUS_TYPE_ARRAY:
1513 case DBUS_TYPE_NAMED:
1514 case DBUS_TYPE_DICT:
1515 _dbus_warn ("dbus_message_get_args_valist doesn't support recursive arrays\n");
1516 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1519 _dbus_warn ("Unknown field type %d\n", type);
1520 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1525 case DBUS_TYPE_DICT:
1526 _dbus_warn ("dbus_message_get_args_valist doesn't support dicts\n");
1527 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1530 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1531 _dbus_warn ("Unknown field type %d\n", spec_type);
1535 spec_type = va_arg (var_args, int);
1536 if (spec_type != 0 && !dbus_message_iter_next (iter))
1538 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1539 "Message has only %d arguments, but more were expected", i);
1555 * Initializes a DBusMessageIter representing the arguments of the
1556 * message passed in.
1558 * @param message the message
1559 * @param _iter pointer to an iterator to initialize
1562 dbus_message_iter_init (DBusMessage *message,
1563 DBusMessageIter *iter)
1565 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1567 _dbus_assert (sizeof (DBusMessageRealIter) <= sizeof (DBusMessageIter));
1569 real->message = message;
1570 real->parent_iter = NULL;
1571 real->changed_stamp = message->changed_stamp;
1573 real->type = DBUS_MESSAGE_ITER_TYPE_MESSAGE;
1575 real->end = _dbus_string_get_length (&message->body);
1577 real->container_start = 0;
1578 real->container_length_pos = 0;
1579 real->wrote_dict_key = 0;
1580 real->array_type_pos = 0;
1584 dbus_message_iter_check (DBusMessageRealIter *iter)
1586 if (iter->changed_stamp != iter->message->changed_stamp)
1587 _dbus_warn ("dbus iterator check failed: invalid iterator\n");
1588 if (iter->pos < 0 || iter->pos > iter->end)
1589 _dbus_warn ("dbus iterator check failed: invalid position\n");
1593 skip_array_type (DBusMessageRealIter *iter, int pos)
1599 data = _dbus_string_get_const_data_len (&iter->message->body,
1602 while (*data == DBUS_TYPE_ARRAY);
1608 dbus_message_iter_get_data_start (DBusMessageRealIter *iter, int *type)
1615 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
1616 data = _dbus_string_get_const_data_len (&iter->message->body,
1618 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1621 *type = DBUS_TYPE_INVALID;
1623 return skip_array_type (iter, iter->pos);
1625 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
1626 data = _dbus_string_get_const_data_len (&iter->message->body,
1627 iter->array_type_pos, 1);
1628 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1631 *type = DBUS_TYPE_INVALID;
1635 case DBUS_MESSAGE_ITER_TYPE_DICT:
1636 /* Get the length of the string */
1637 len = _dbus_demarshal_uint32 (&iter->message->body,
1638 iter->message->byte_order,
1640 pos = pos + len + 1;
1642 data = _dbus_string_get_const_data_len (&iter->message->body,
1644 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1647 *type = DBUS_TYPE_INVALID;
1649 return skip_array_type (iter, pos);
1652 _dbus_assert_not_reached ("Invalid iter type");
1655 *type = DBUS_TYPE_INVALID;
1661 * Checks if an iterator has any more fields.
1663 * @param iter the message iter
1664 * @returns #TRUE if there are more fields
1668 dbus_message_iter_has_next (DBusMessageIter *iter)
1670 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1674 dbus_message_iter_check (real);
1676 if (real->pos >= real->end)
1679 pos = dbus_message_iter_get_data_start (real, &type);
1681 if (!_dbus_marshal_get_arg_end_pos (&real->message->body,
1682 real->message->byte_order,
1683 type, pos, &end_pos))
1686 if (end_pos >= real->end)
1693 * Moves the iterator to the next field.
1695 * @param _iter The message iter
1696 * @returns #TRUE if the iterator was moved to the next field
1699 dbus_message_iter_next (DBusMessageIter *iter)
1701 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1705 dbus_message_iter_check (real);
1707 pos = dbus_message_iter_get_data_start (real, &type);
1709 if (!_dbus_marshal_get_arg_end_pos (&real->message->body,
1710 real->message->byte_order,
1711 type, pos, &end_pos))
1714 if (end_pos >= real->end)
1717 real->pos = end_pos;
1723 * Returns the argument type of the argument that the
1724 * message iterator points at.
1726 * @param iter the message iter
1727 * @returns the field type
1730 dbus_message_iter_get_arg_type (DBusMessageIter *iter)
1732 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1735 dbus_message_iter_check (real);
1737 if (real->pos >= real->end)
1738 return DBUS_TYPE_INVALID;
1740 pos = dbus_message_iter_get_data_start (real, &type);
1746 iter_get_array_type (DBusMessageRealIter *iter, int *array_type_pos)
1749 int _array_type_pos;
1754 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
1755 _array_type_pos = iter->pos + 1;
1757 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
1758 _array_type_pos = iter->array_type_pos + 1;
1760 case DBUS_MESSAGE_ITER_TYPE_DICT:
1761 /* Get the length of the string */
1762 len = _dbus_demarshal_uint32 (&iter->message->body,
1763 iter->message->byte_order,
1765 pos = pos + len + 1;
1766 data = _dbus_string_get_const_data_len (&iter->message->body,
1768 _array_type_pos = pos + 1;
1771 _dbus_assert_not_reached ("wrong iter type");
1772 return DBUS_TYPE_INVALID;
1775 if (array_type_pos != NULL)
1776 *array_type_pos = _array_type_pos;
1778 data = _dbus_string_get_const_data_len (&iter->message->body,
1779 _array_type_pos, 1);
1780 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1783 return DBUS_TYPE_INVALID;
1788 * Returns the element type of the array that the
1789 * message iterator points at. Note that you need
1790 * to check that the iterator points to an array
1791 * prior to using this function.
1793 * @param iter the message iter
1794 * @returns the field type
1797 dbus_message_iter_get_array_type (DBusMessageIter *iter)
1799 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1802 dbus_message_iter_check (real);
1804 if (real->pos >= real->end)
1805 return DBUS_TYPE_INVALID;
1807 pos = dbus_message_iter_get_data_start (real, &type);
1809 _dbus_assert (type == DBUS_TYPE_ARRAY);
1811 return iter_get_array_type (real, NULL);
1816 * Returns the string value that an iterator may point to.
1817 * Note that you need to check that the iterator points to
1818 * a string value before using this function.
1820 * @see dbus_message_iter_get_arg_type
1821 * @param iter the message iter
1822 * @returns the string
1825 dbus_message_iter_get_string (DBusMessageIter *iter)
1827 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1830 dbus_message_iter_check (real);
1832 pos = dbus_message_iter_get_data_start (real, &type);
1834 _dbus_assert (type == DBUS_TYPE_STRING);
1836 return _dbus_demarshal_string (&real->message->body, real->message->byte_order,
1841 * Returns the name and data from a named type that an
1842 * iterator may point to. Note that you need to check that
1843 * the iterator points to a named type before using this
1846 * @see dbus_message_iter_get_arg_type
1847 * @param iter the message iter
1848 * @param value return location for data
1849 * @param len return location for length of data
1850 * @returns the named type name as a string
1854 dbus_message_iter_get_named (DBusMessageIter *iter,
1855 unsigned char **value,
1858 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1862 dbus_message_iter_check (real);
1864 pos = dbus_message_iter_get_data_start (real, &type);
1866 _dbus_assert (type == DBUS_TYPE_NAMED);
1868 name = _dbus_demarshal_string (&real->message->body, real->message->byte_order,
1874 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
1875 pos + 1, NULL, value, len))
1885 * Returns the byte value that an iterator may point to.
1886 * Note that you need to check that the iterator points to
1887 * a byte value before using this function.
1889 * @see dbus_message_iter_get_arg_type
1890 * @param iter the message iter
1891 * @returns the byte value
1894 dbus_message_iter_get_byte (DBusMessageIter *iter)
1896 unsigned char value;
1897 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1900 dbus_message_iter_check (real);
1902 pos = dbus_message_iter_get_data_start (real, &type);
1904 _dbus_assert (type == DBUS_TYPE_BYTE);
1906 value = _dbus_string_get_byte (&real->message->body, pos);
1913 * Returns the boolean value that an iterator may point to.
1914 * Note that you need to check that the iterator points to
1915 * a boolean value before using this function.
1917 * @see dbus_message_iter_get_arg_type
1918 * @param iter the message iter
1919 * @returns the boolean value
1922 dbus_message_iter_get_boolean (DBusMessageIter *iter)
1924 unsigned char value;
1925 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1928 dbus_message_iter_check (real);
1930 pos = dbus_message_iter_get_data_start (real, &type);
1932 _dbus_assert (type == DBUS_TYPE_BOOLEAN);
1934 value = _dbus_string_get_byte (&real->message->body, pos);
1940 * Returns the 32 bit signed integer value that an iterator may point to.
1941 * Note that you need to check that the iterator points to
1942 * an integer value before using this function.
1944 * @see dbus_message_iter_get_arg_type
1945 * @param iter the message iter
1946 * @returns the integer
1949 dbus_message_iter_get_int32 (DBusMessageIter *iter)
1951 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1954 dbus_message_iter_check (real);
1956 pos = dbus_message_iter_get_data_start (real, &type);
1958 _dbus_assert (type == DBUS_TYPE_INT32);
1960 return _dbus_demarshal_int32 (&real->message->body, real->message->byte_order,
1965 * Returns the 32 bit unsigned integer value that an iterator may point to.
1966 * Note that you need to check that the iterator points to
1967 * an unsigned integer value before using this function.
1969 * @see dbus_message_iter_get_arg_type
1970 * @param iter the message iter
1971 * @returns the integer
1974 dbus_message_iter_get_uint32 (DBusMessageIter *iter)
1976 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1979 dbus_message_iter_check (real);
1981 pos = dbus_message_iter_get_data_start (real, &type);
1983 _dbus_assert (type == DBUS_TYPE_UINT32);
1985 return _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
1990 * Returns the double value that an iterator may point to.
1991 * Note that you need to check that the iterator points to
1992 * a string value before using this function.
1994 * @see dbus_message_iter_get_arg_type
1995 * @param iter the message iter
1996 * @returns the double
1999 dbus_message_iter_get_double (DBusMessageIter *iter)
2001 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2004 dbus_message_iter_check (real);
2006 pos = dbus_message_iter_get_data_start (real, &type);
2008 _dbus_assert (type == DBUS_TYPE_DOUBLE);
2010 return _dbus_demarshal_double (&real->message->body, real->message->byte_order,
2015 * Initializes an iterator for the array that the iterator
2016 * may point to. Note that you need to check that the iterator
2017 * points to an array prior to using this function.
2019 * The array element type is returned in array_type, and the array
2020 * iterator can only be used to get that type of data.
2022 * @param iter the iterator
2023 * @param array_iter pointer to an iterator to initialize
2024 * @param array_type gets set to the type of the array elements
2025 * @returns #TRUE on success
2028 dbus_message_iter_init_array_iterator (DBusMessageIter *iter,
2029 DBusMessageIter *array_iter,
2032 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2033 DBusMessageRealIter *array_real = (DBusMessageRealIter *)array_iter;
2034 int type, pos, len_pos, len, array_type_pos;
2037 dbus_message_iter_check (real);
2039 pos = dbus_message_iter_get_data_start (real, &type);
2041 _dbus_assert (type == DBUS_TYPE_ARRAY);
2043 _array_type = iter_get_array_type (real, &array_type_pos);
2045 len_pos = _DBUS_ALIGN_VALUE (pos, sizeof (dbus_uint32_t));
2046 len = _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2049 array_real->parent_iter = real;
2050 array_real->message = real->message;
2051 array_real->changed_stamp = real->message->changed_stamp;
2053 array_real->type = DBUS_MESSAGE_ITER_TYPE_ARRAY;
2054 array_real->pos = pos;
2055 array_real->end = pos + len;
2057 array_real->container_start = pos;
2058 array_real->container_length_pos = len_pos;
2059 array_real->wrote_dict_key = 0;
2060 array_real->array_type_pos = array_type_pos;
2061 array_real->array_type_done = TRUE;
2063 if (array_type != NULL)
2064 *array_type = _array_type;
2071 * Initializes an iterator for the dict that the iterator
2072 * may point to. Note that you need to check that the iterator
2073 * points to a dict prior to using this function.
2075 * @param iter the iterator
2076 * @param dict_iter pointer to an iterator to initialize
2077 * @returns #TRUE on success
2080 dbus_message_iter_init_dict_iterator (DBusMessageIter *iter,
2081 DBusMessageIter *dict_iter)
2083 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2084 DBusMessageRealIter *dict_real = (DBusMessageRealIter *)dict_iter;
2085 int type, pos, len_pos, len;
2087 dbus_message_iter_check (real);
2089 pos = dbus_message_iter_get_data_start (real, &type);
2091 _dbus_assert (type == DBUS_TYPE_DICT);
2093 len_pos = _DBUS_ALIGN_VALUE (pos, sizeof (dbus_uint32_t));
2094 len = _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2097 dict_real->parent_iter = real;
2098 dict_real->message = real->message;
2099 dict_real->changed_stamp = real->message->changed_stamp;
2101 dict_real->type = DBUS_MESSAGE_ITER_TYPE_DICT;
2102 dict_real->pos = pos;
2103 dict_real->end = pos + len;
2105 dict_real->container_start = pos;
2106 dict_real->container_length_pos = len_pos;
2107 dict_real->wrote_dict_key = 0;
2113 * Returns the byte array that the iterator may point to.
2114 * Note that you need to check that the iterator points
2115 * to a byte array prior to using this function.
2117 * @param iter the iterator
2118 * @param value return location for array values
2119 * @param len return location for length of byte array
2120 * @returns #TRUE on success
2123 dbus_message_iter_get_byte_array (DBusMessageIter *iter,
2124 unsigned char **value,
2127 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2130 dbus_message_iter_check (real);
2132 pos = dbus_message_iter_get_data_start (real, &type);
2134 _dbus_assert (type == DBUS_TYPE_ARRAY);
2136 type = iter_get_array_type (real, NULL);
2138 _dbus_assert (type == DBUS_TYPE_BYTE);
2140 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2141 pos, NULL, value, len))
2148 * Returns the boolean array that the iterator may point to. Note that
2149 * you need to check that the iterator points to an array of the
2150 * correct type prior to using this function.
2152 * @param iter the iterator
2153 * @param value return location for the array
2154 * @param len return location for the array length
2155 * @returns #TRUE on success
2158 dbus_message_iter_get_boolean_array (DBusMessageIter *iter,
2159 unsigned char **value,
2162 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2165 dbus_message_iter_check (real);
2167 pos = dbus_message_iter_get_data_start (real, &type);
2169 _dbus_assert (type == DBUS_TYPE_ARRAY);
2171 type = iter_get_array_type (real, NULL);
2173 _dbus_assert (type == DBUS_TYPE_BOOLEAN);
2175 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2176 pos, NULL, value, len))
2183 * Returns the 32 bit signed integer array that the iterator may point
2184 * to. Note that you need to check that the iterator points to an
2185 * array of the correct type prior to using this function.
2187 * @param iter the iterator
2188 * @param value return location for the array
2189 * @param len return location for the array length
2190 * @returns #TRUE on success
2193 dbus_message_iter_get_int32_array (DBusMessageIter *iter,
2194 dbus_int32_t **value,
2197 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2200 dbus_message_iter_check (real);
2202 pos = dbus_message_iter_get_data_start (real, &type);
2204 _dbus_assert (type == DBUS_TYPE_ARRAY);
2206 type = iter_get_array_type (real, NULL);
2208 _dbus_assert (type == DBUS_TYPE_INT32);
2210 if (!_dbus_demarshal_int32_array (&real->message->body, real->message->byte_order,
2211 pos, NULL, value, len))
2218 * Returns the 32 bit unsigned integer array that the iterator may point
2219 * to. Note that you need to check that the iterator points to an
2220 * array of the correct type prior to using this function.
2222 * @param iter the iterator
2223 * @param value return location for the array
2224 * @param len return location for the array length
2225 * @returns #TRUE on success
2228 dbus_message_iter_get_uint32_array (DBusMessageIter *iter,
2229 dbus_uint32_t **value,
2232 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2235 dbus_message_iter_check (real);
2237 pos = dbus_message_iter_get_data_start (real, &type);
2239 _dbus_assert (type == DBUS_TYPE_ARRAY);
2241 type = iter_get_array_type (real, NULL);
2242 _dbus_assert (type == DBUS_TYPE_UINT32);
2244 if (!_dbus_demarshal_uint32_array (&real->message->body, real->message->byte_order,
2245 pos, NULL, value, len))
2252 * Returns the double array that the iterator may point to. Note that
2253 * you need to check that the iterator points to an array of the
2254 * correct type prior to using this function.
2256 * @param iter the iterator
2257 * @param value return location for the array
2258 * @param len return location for the array length
2259 * @returns #TRUE on success
2262 dbus_message_iter_get_double_array (DBusMessageIter *iter,
2266 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2269 dbus_message_iter_check (real);
2271 pos = dbus_message_iter_get_data_start (real, &type);
2273 _dbus_assert (type == DBUS_TYPE_ARRAY);
2275 type = iter_get_array_type (real, NULL);
2276 _dbus_assert (type == DBUS_TYPE_DOUBLE);
2278 if (!_dbus_demarshal_double_array (&real->message->body, real->message->byte_order,
2279 pos, NULL, value, len))
2286 * Returns the string array that the iterator may point to.
2287 * Note that you need to check that the iterator points
2288 * to a byte array prior to using this function.
2290 * The returned value is a #NULL-terminated array of strings.
2291 * Each string is a separate malloc block, and the array
2292 * itself is a malloc block. You can free this type of
2293 * string array with dbus_free_string_array().
2295 * @param iter the iterator
2296 * @param value return location for string values
2297 * @param len return location for length of byte array
2298 * @returns #TRUE on success
2301 dbus_message_iter_get_string_array (DBusMessageIter *iter,
2305 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2308 dbus_message_iter_check (real);
2310 pos = dbus_message_iter_get_data_start (real, &type);
2312 _dbus_assert (type == DBUS_TYPE_ARRAY);
2314 type = iter_get_array_type (real, NULL);
2315 _dbus_assert (type == DBUS_TYPE_STRING);
2317 if (!_dbus_demarshal_string_array (&real->message->body, real->message->byte_order,
2318 pos, NULL, value, len))
2325 * Returns the key name fot the dict entry that an iterator
2326 * may point to. Note that you need to check that the iterator
2327 * points to a dict entry before using this function.
2329 * @see dbus_message_iter_init_dict_iterator
2330 * @param iter the message iter
2331 * @returns the key name
2334 dbus_message_iter_get_dict_key (DBusMessageIter *iter)
2336 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2338 dbus_message_iter_check (real);
2340 _dbus_assert (real->type == DBUS_MESSAGE_ITER_TYPE_DICT);
2342 return _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2347 * Initializes a DBusMessageIter pointing to the end of the
2348 * message. This iterator can be used to append data to the
2351 * @param message the message
2352 * @param _iter pointer to an iterator to initialize
2355 dbus_message_append_iter_init (DBusMessage *message,
2356 DBusMessageIter *iter)
2358 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2360 real->message = message;
2361 real->parent_iter = NULL;
2362 real->changed_stamp = message->changed_stamp;
2364 real->type = DBUS_MESSAGE_ITER_TYPE_MESSAGE;
2365 real->end = _dbus_string_get_length (&real->message->body);
2366 real->pos = real->end;
2368 real->container_length_pos = 0;
2369 real->wrote_dict_key = 0;
2373 dbus_message_iter_append_check (DBusMessageRealIter *iter)
2375 _dbus_assert (!iter->message->locked);
2377 if (iter->changed_stamp != iter->message->changed_stamp)
2378 _dbus_warn ("dbus iterator check failed: invalid iterator");
2380 if (iter->pos != iter->end)
2381 _dbus_warn ("dbus iterator check failed: can only append at end of message");
2383 if (iter->pos != _dbus_string_get_length (&iter->message->body))
2384 _dbus_warn ("dbus iterator check failed: append pos not at end of message string");
2388 dbus_message_iter_append_type (DBusMessageRealIter *iter,
2394 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
2395 if (!_dbus_string_append_byte (&iter->message->body, type))
2399 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
2400 data = _dbus_string_get_const_data_len (&iter->message->body,
2401 iter->array_type_pos, 1);
2404 _dbus_warn ("Appended element of wrong type for array\n");
2409 case DBUS_MESSAGE_ITER_TYPE_DICT:
2410 if (!iter->wrote_dict_key)
2412 _dbus_warn ("Appending dict data before key name\n");
2416 if (!_dbus_string_append_byte (&iter->message->body, type))
2422 _dbus_assert_not_reached ("Invalid iter type");
2430 dbus_message_iter_update_after_change (DBusMessageRealIter *iter)
2432 iter->changed_stamp = iter->message->changed_stamp;
2434 /* Set new end of iter */
2435 iter->end = _dbus_string_get_length (&iter->message->body);
2436 iter->pos = iter->end;
2438 /* Set container length */
2439 if (iter->type == DBUS_MESSAGE_ITER_TYPE_DICT ||
2440 (iter->type == DBUS_MESSAGE_ITER_TYPE_ARRAY && iter->array_type_done))
2441 _dbus_marshal_set_uint32 (&iter->message->body,
2442 iter->message->byte_order,
2443 iter->container_length_pos,
2444 iter->end - iter->container_start);
2446 if (iter->parent_iter)
2447 dbus_message_iter_update_after_change (iter->parent_iter);
2451 dbus_message_iter_append_done (DBusMessageRealIter *iter)
2453 iter->message->changed_stamp++;
2454 dbus_message_iter_update_after_change (iter);
2455 iter->wrote_dict_key = FALSE;
2459 * Appends a nil value to the message
2461 * @param iter an iterator pointing to the end of the message
2462 * @returns #TRUE on success
2465 dbus_message_iter_append_nil (DBusMessageIter *iter)
2467 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2469 dbus_message_iter_append_check (real);
2471 if (!dbus_message_iter_append_type (real, DBUS_TYPE_NIL))
2474 dbus_message_iter_append_done (real);
2480 * Appends a boolean value to the message
2482 * @param iter an iterator pointing to the end of the message
2483 * @param value the boolean value
2484 * @returns #TRUE on success
2487 dbus_message_iter_append_boolean (DBusMessageIter *iter,
2490 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2492 dbus_message_iter_append_check (real);
2494 if (!dbus_message_iter_append_type (real, DBUS_TYPE_BOOLEAN))
2497 if (!_dbus_string_append_byte (&real->message->body, (value != FALSE)))
2499 _dbus_string_set_length (&real->message->body, real->pos);
2503 dbus_message_iter_append_done (real);
2509 * Appends a byte to the message
2511 * @param iter an iterator pointing to the end of the message
2512 * @param value the byte value
2513 * @returns #TRUE on success
2516 dbus_message_iter_append_byte (DBusMessageIter *iter,
2517 unsigned char value)
2519 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2521 dbus_message_iter_append_check (real);
2523 if (!dbus_message_iter_append_type (real, DBUS_TYPE_BOOLEAN))
2526 if (!_dbus_string_append_byte (&real->message->body, value))
2528 _dbus_string_set_length (&real->message->body, real->pos);
2532 dbus_message_iter_append_done (real);
2539 * Appends a 32 bit signed integer to the message.
2541 * @param iter an iterator pointing to the end of the message
2542 * @param value the integer value
2543 * @returns #TRUE on success
2546 dbus_message_iter_append_int32 (DBusMessageIter *iter,
2549 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2551 dbus_message_iter_append_check (real);
2553 if (!dbus_message_iter_append_type (real, DBUS_TYPE_INT32))
2556 if (!_dbus_marshal_int32 (&real->message->body, real->message->byte_order, value))
2558 _dbus_string_set_length (&real->message->body, real->pos);
2562 dbus_message_iter_append_done (real);
2568 * Appends a 32 bit unsigned integer to the message.
2570 * @param iter an iterator pointing to the end of the message
2571 * @param value the integer value
2572 * @returns #TRUE on success
2575 dbus_message_iter_append_uint32 (DBusMessageIter *iter,
2576 dbus_uint32_t value)
2578 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2580 dbus_message_iter_append_check (real);
2582 if (!dbus_message_iter_append_type (real, DBUS_TYPE_UINT32))
2585 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, value))
2587 _dbus_string_set_length (&real->message->body, real->pos);
2591 dbus_message_iter_append_done (real);
2597 * Appends a double value to the message.
2599 * @param iter an iterator pointing to the end of the message
2600 * @param value the double value
2601 * @returns #TRUE on success
2604 dbus_message_iter_append_double (DBusMessageIter *iter,
2607 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2609 dbus_message_iter_append_check (real);
2611 if (!dbus_message_iter_append_type (real, DBUS_TYPE_DOUBLE))
2614 if (!_dbus_marshal_double (&real->message->body, real->message->byte_order, value))
2616 _dbus_string_set_length (&real->message->body, real->pos);
2620 dbus_message_iter_append_done (real);
2626 * Appends a UTF-8 string to the message.
2628 * @param iter an iterator pointing to the end of the message
2629 * @param value the string
2630 * @returns #TRUE on success
2633 dbus_message_iter_append_string (DBusMessageIter *iter,
2636 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2638 dbus_message_iter_append_check (real);
2640 if (!dbus_message_iter_append_type (real, DBUS_TYPE_STRING))
2643 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, value))
2645 _dbus_string_set_length (&real->message->body, real->pos);
2649 dbus_message_iter_append_done (real);
2655 * Appends a named type data chunk to the message.
2657 * @param iter an iterator pointing to the end of the message
2658 * @param name the name of the type
2660 * @returns #TRUE on success
2663 dbus_message_iter_append_named (DBusMessageIter *iter,
2665 const unsigned char *data,
2668 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2670 dbus_message_iter_append_check (real);
2672 if (!dbus_message_iter_append_type (real, DBUS_TYPE_NAMED))
2675 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, data))
2677 _dbus_string_set_length (&real->message->body, real->pos);
2681 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, data, len))
2683 _dbus_string_set_length (&real->message->body, real->pos);
2687 dbus_message_iter_append_done (real);
2694 * Appends a dict key name to the message. The iterator used
2695 * must point to a dict.
2697 * @param iter an iterator pointing to the end of the message
2698 * @param value the string
2699 * @returns #TRUE on success
2702 dbus_message_iter_append_dict_key (DBusMessageIter *iter,
2705 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2707 dbus_message_iter_append_check (real);
2708 _dbus_assert (real->type == DBUS_MESSAGE_ITER_TYPE_DICT);
2710 if (real->wrote_dict_key)
2712 _dbus_warn ("Appendinging multiple dict key names\n");
2716 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, value))
2721 dbus_message_iter_append_done (real);
2722 real->wrote_dict_key = TRUE;
2728 array_iter_type_mark_done (DBusMessageRealIter *iter)
2732 if (iter->type == DBUS_MESSAGE_ITER_TYPE_ARRAY)
2733 array_iter_type_mark_done (iter->parent_iter);
2737 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&iter->message->body),
2738 sizeof (dbus_uint32_t));
2740 /* Empty length for now, backfill later */
2741 if (!_dbus_marshal_uint32 (&iter->message->body, iter->message->byte_order, 0))
2743 _dbus_string_set_length (&iter->message->body, iter->pos);
2747 iter->container_start = _dbus_string_get_length (&iter->message->body);
2748 iter->container_length_pos = len_pos;
2749 iter->array_type_done = TRUE;
2755 append_array_type (DBusMessageRealIter *real,
2757 dbus_bool_t *array_type_done,
2758 int *array_type_pos)
2760 int existing_element_type;
2762 if (!dbus_message_iter_append_type (real, DBUS_TYPE_ARRAY))
2765 if (real->type == DBUS_MESSAGE_ITER_TYPE_ARRAY &&
2766 real->array_type_done)
2768 existing_element_type = iter_get_array_type (real, array_type_pos);
2769 if (existing_element_type != element_type)
2771 _dbus_warn ("Appending array of %d, when expecting array of %d\n",
2772 element_type, existing_element_type);
2773 _dbus_string_set_length (&real->message->body, real->pos);
2776 if (array_type_done != NULL)
2777 *array_type_done = TRUE;
2781 if (array_type_pos != NULL)
2782 *array_type_pos = _dbus_string_get_length (&real->message->body);
2784 /* Append element type */
2785 if (!_dbus_string_append_byte (&real->message->body, element_type))
2787 _dbus_string_set_length (&real->message->body, real->pos);
2791 if (array_type_done != NULL)
2792 *array_type_done = element_type != DBUS_TYPE_ARRAY;
2794 if (element_type != DBUS_TYPE_ARRAY &&
2795 !array_iter_type_mark_done (real))
2803 * Appends an array to the message and initializes an iterator that
2804 * can be used to append to the array.
2806 * @param iter an iterator pointing to the end of the message
2807 * @param array_iter pointer to an iter that will be initialized
2808 * @param element_type the type of the array elements
2809 * @returns #TRUE on success
2812 dbus_message_iter_append_array (DBusMessageIter *iter,
2813 DBusMessageIter *array_iter,
2816 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2817 DBusMessageRealIter *array_real = (DBusMessageRealIter *)array_iter;
2820 dbus_bool_t array_type_done;
2822 if (element_type == DBUS_TYPE_NIL)
2824 _dbus_warn ("Can't create NIL arrays\n");
2828 dbus_message_iter_append_check (real);
2830 if (!append_array_type (real, element_type, &array_type_done, &array_type_pos))
2833 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&real->message->body), sizeof (dbus_uint32_t));
2835 if (array_type_done)
2837 /* Empty length for now, backfill later */
2838 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, 0))
2840 _dbus_string_set_length (&real->message->body, real->pos);
2845 array_real->parent_iter = real;
2846 array_real->message = real->message;
2847 array_real->changed_stamp = real->message->changed_stamp;
2849 array_real->type = DBUS_MESSAGE_ITER_TYPE_ARRAY;
2850 array_real->pos = _dbus_string_get_length (&real->message->body);
2851 array_real->end = array_real->end;
2853 array_real->container_start = array_real->pos;
2854 array_real->container_length_pos = len_pos;
2855 array_real->wrote_dict_key = 0;
2856 array_real->array_type_done = array_type_done;
2857 array_real->array_type_pos = array_type_pos;
2859 dbus_message_iter_append_done (array_real);
2865 * Appends a dict to the message and initializes an iterator that
2866 * can be used to append to the dict.
2868 * @param iter an iterator pointing to the end of the message
2869 * @param array_iter pointer to an iter that will be initialized
2870 * @param element_type the type of the array elements
2871 * @returns #TRUE on success
2874 dbus_message_iter_append_dict (DBusMessageIter *iter,
2875 DBusMessageIter *dict_iter)
2877 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2878 DBusMessageRealIter *dict_real = (DBusMessageRealIter *)dict_iter;
2881 dbus_message_iter_append_check (real);
2883 if (!dbus_message_iter_append_type (real, DBUS_TYPE_DICT))
2886 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&real->message->body), sizeof (dbus_uint32_t));
2888 /* Empty length for now, backfill later */
2889 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, 0))
2891 _dbus_string_set_length (&real->message->body, real->pos);
2895 dict_real->parent_iter = real;
2896 dict_real->message = real->message;
2897 dict_real->changed_stamp = real->message->changed_stamp;
2899 dict_real->type = DBUS_MESSAGE_ITER_TYPE_DICT;
2900 dict_real->pos = _dbus_string_get_length (&real->message->body);
2901 dict_real->end = dict_real->end;
2903 dict_real->container_start = dict_real->pos;
2904 dict_real->container_length_pos = len_pos;
2905 dict_real->wrote_dict_key = 0;
2907 dbus_message_iter_append_done (dict_real);
2914 * Appends a boolean array to the message.
2916 * @param iter an iterator pointing to the end of the message
2917 * @param value the array
2918 * @param len the length of the array
2919 * @returns #TRUE on success
2922 dbus_message_iter_append_boolean_array (DBusMessageIter *iter,
2923 unsigned const char *value,
2926 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2928 dbus_message_iter_append_check (real);
2930 if (!append_array_type (real, DBUS_TYPE_BOOLEAN, NULL, NULL))
2933 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, value, len))
2935 _dbus_string_set_length (&real->message->body, real->pos);
2939 dbus_message_iter_append_done (real);
2945 * Appends a 32 bit signed integer array to the message.
2947 * @param iter an iterator pointing to the end of the message
2948 * @param value the array
2949 * @param len the length of the array
2950 * @returns #TRUE on success
2953 dbus_message_iter_append_int32_array (DBusMessageIter *iter,
2954 const dbus_int32_t *value,
2957 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2959 dbus_message_iter_append_check (real);
2961 if (!append_array_type (real, DBUS_TYPE_INT32, NULL, NULL))
2964 if (!_dbus_marshal_int32_array (&real->message->body, real->message->byte_order, value, len))
2966 _dbus_string_set_length (&real->message->body, real->pos);
2970 dbus_message_iter_append_done (real);
2976 * Appends a 32 bit unsigned integer array to the message.
2978 * @param iter an iterator pointing to the end of the message
2979 * @param value the array
2980 * @param len the length of the array
2981 * @returns #TRUE on success
2984 dbus_message_iter_append_uint32_array (DBusMessageIter *iter,
2985 const dbus_uint32_t *value,
2988 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2990 dbus_message_iter_append_check (real);
2992 if (!append_array_type (real, DBUS_TYPE_UINT32, NULL, NULL))
2995 if (!_dbus_marshal_uint32_array (&real->message->body, real->message->byte_order, value, len))
2997 _dbus_string_set_length (&real->message->body, real->pos);
3001 dbus_message_iter_append_done (real);
3007 * Appends a double array to the message.
3009 * @param iter an iterator pointing to the end of the message
3010 * @param value the array
3011 * @param len the length of the array
3012 * @returns #TRUE on success
3015 dbus_message_iter_append_double_array (DBusMessageIter *iter,
3016 const double *value,
3019 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3021 dbus_message_iter_append_check (real);
3023 if (!append_array_type (real, DBUS_TYPE_DOUBLE, NULL, NULL))
3026 if (!_dbus_marshal_double_array (&real->message->body, real->message->byte_order, value, len))
3028 _dbus_string_set_length (&real->message->body, real->pos);
3032 dbus_message_iter_append_done (real);
3038 * Appends a byte array to the message.
3040 * @param iter an iterator pointing to the end of the message
3041 * @param value the array
3042 * @param len the length of the array
3043 * @returns #TRUE on success
3046 dbus_message_iter_append_byte_array (DBusMessageIter *iter,
3047 unsigned const char *value,
3050 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3052 dbus_message_iter_append_check (real);
3054 if (!append_array_type (real, DBUS_TYPE_BYTE, NULL, NULL))
3057 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, value, len))
3059 _dbus_string_set_length (&real->message->body, real->pos);
3063 dbus_message_iter_append_done (real);
3069 * Appends a string array to the message.
3071 * @param iter an iterator pointing to the end of the message
3072 * @param value the array
3073 * @param len the length of the array
3074 * @returns #TRUE on success
3077 dbus_message_iter_append_string_array (DBusMessageIter *iter,
3081 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3083 dbus_message_iter_append_check (real);
3085 if (!append_array_type (real, DBUS_TYPE_STRING, NULL, NULL))
3088 if (!_dbus_marshal_string_array (&real->message->body, real->message->byte_order, value, len))
3090 _dbus_string_set_length (&real->message->body, real->pos);
3094 dbus_message_iter_append_done (real);
3100 * Sets the message sender.
3102 * @param message the message
3103 * @param sender the sender
3104 * @returns #FALSE if not enough memory
3107 dbus_message_set_sender (DBusMessage *message,
3110 _dbus_assert (!message->locked);
3114 delete_string_field (message, FIELD_SENDER);
3119 return set_string_field (message,
3126 * Sets a flag indicating that the message is an error reply
3127 * message, i.e. an "exception" rather than a normal response.
3129 * @param message the message
3130 * @param is_error_reply #TRUE if this is an error message.
3133 dbus_message_set_is_error (DBusMessage *message,
3134 dbus_bool_t is_error_reply)
3138 _dbus_assert (!message->locked);
3140 header = _dbus_string_get_data_len (&message->header, 1, 1);
3143 *header |= DBUS_HEADER_FLAG_ERROR;
3145 *header &= ~DBUS_HEADER_FLAG_ERROR;
3149 * Returns #TRUE if the message is an error
3150 * reply to some previous message we sent.
3152 * @param message the message
3153 * @returns #TRUE if the message is an error
3156 dbus_message_get_is_error (DBusMessage *message)
3160 header = _dbus_string_get_const_data_len (&message->header, 1, 1);
3162 return (*header & DBUS_HEADER_FLAG_ERROR) != 0;
3166 * Gets the service which originated this message,
3167 * or #NULL if unknown or inapplicable.
3169 * @param message the message
3170 * @returns the service name or #NULL
3173 dbus_message_get_sender (DBusMessage *message)
3175 return get_string_field (message, FIELD_SENDER, NULL);
3179 * Checks whether the message has the given name.
3180 * If the message has no name or has a different
3181 * name, returns #FALSE.
3183 * @param message the message
3184 * @param name the name to check (must not be #NULL)
3186 * @returns #TRUE if the message has the given name
3189 dbus_message_name_is (DBusMessage *message,
3194 _dbus_assert (name != NULL);
3196 n = dbus_message_get_name (message);
3198 if (n && strcmp (n, name) == 0)
3205 * Checks whether the message was sent to the given service. If the
3206 * message has no service specified or has a different name, returns
3209 * @param message the message
3210 * @param service the service to check (must not be #NULL)
3212 * @returns #TRUE if the message has the given destination service
3215 dbus_message_service_is (DBusMessage *message,
3216 const char *service)
3220 _dbus_assert (service != NULL);
3222 s = dbus_message_get_service (message);
3224 if (s && strcmp (s, service) == 0)
3231 * Checks whether the message has the given service as its sender. If
3232 * the message has no sender specified or has a different sender,
3233 * returns #FALSE. Note that if a peer application owns multiple
3234 * services, its messages will have only one of those services as the
3235 * sender (usually the base service). So you can't use this
3236 * function to prove the sender didn't own service Foo, you can
3237 * only use it to prove that it did.
3239 * @param message the message
3240 * @param service the service to check (must not be #NULL)
3242 * @returns #TRUE if the message has the given origin service
3245 dbus_message_sender_is (DBusMessage *message,
3246 const char *service)
3250 _dbus_assert (service != NULL);
3252 s = dbus_message_get_sender (message);
3254 if (s && strcmp (s, service) == 0)
3261 * Sets a #DBusError based on the contents of the given
3262 * message. The error is only set if the message
3263 * is an error message, as in dbus_message_get_is_error().
3264 * The name of the error is set to the name of the message,
3265 * and the error message is set to the first argument
3266 * if the argument exists and is a string.
3268 * The return value indicates whether the error was set (the error is
3269 * set if and only if the message is an error message).
3270 * So you can check for an error reply and convert it to DBusError
3273 * @param error the error to set
3274 * @param message the message to set it from
3275 * @returns #TRUE if dbus_message_get_is_error() returns #TRUE for the message
3278 dbus_set_error_from_message (DBusError *error,
3279 DBusMessage *message)
3283 if (!dbus_message_get_is_error (message))
3287 dbus_message_get_args (message, NULL,
3288 DBUS_TYPE_STRING, &str,
3291 dbus_set_error (error, dbus_message_get_name (message),
3292 str ? "%s" : NULL, str);
3302 * @addtogroup DBusMessageInternals
3307 * @typedef DBusMessageLoader
3309 * The DBusMessageLoader object encapsulates the process of converting
3310 * a byte stream into a series of DBusMessage. It buffers the incoming
3311 * bytes as efficiently as possible, and generates a queue of
3312 * messages. DBusMessageLoader is typically used as part of a
3313 * DBusTransport implementation. The DBusTransport then hands off
3314 * the loaded messages to a DBusConnection, making the messages
3315 * visible to the application.
3317 * @todo write tests for break-loader that a) randomly delete header
3318 * fields and b) set string fields to zero-length and other funky
3323 /* we definitely use signed ints for sizes, so don't exceed
3324 * _DBUS_INT_MAX; and add 16 for paranoia, since a message
3325 * over 128M is pretty nuts anyhow.
3329 * The maximum sane message size.
3331 #define MAX_SANE_MESSAGE_SIZE (_DBUS_INT_MAX/16)
3334 * Implementation details of DBusMessageLoader.
3335 * All members are private.
3337 struct DBusMessageLoader
3339 int refcount; /**< Reference count. */
3341 DBusString data; /**< Buffered data */
3343 DBusList *messages; /**< Complete messages. */
3345 long max_message_size; /**< Maximum size of a message */
3347 unsigned int buffer_outstanding : 1; /**< Someone is using the buffer to read */
3349 unsigned int corrupted : 1; /**< We got broken data, and are no longer working */
3353 * The initial buffer size of the message loader.
3355 * @todo this should be based on min header size plus some average
3356 * body size, or something. Or rather, the min header size only, if we
3357 * want to try to read only the header, store that in a DBusMessage,
3358 * then read only the body and store that, etc., depends on
3359 * how we optimize _dbus_message_loader_get_buffer() and what
3360 * the exact message format is.
3362 #define INITIAL_LOADER_DATA_LEN 32
3365 * Creates a new message loader. Returns #NULL if memory can't
3368 * @returns new loader, or #NULL.
3371 _dbus_message_loader_new (void)
3373 DBusMessageLoader *loader;
3375 loader = dbus_new0 (DBusMessageLoader, 1);
3379 loader->refcount = 1;
3381 /* Try to cap message size at something that won't *totally* hose
3382 * the system if we have a couple of them.
3384 loader->max_message_size = _DBUS_ONE_MEGABYTE * 32;
3386 if (!_dbus_string_init (&loader->data))
3392 /* preallocate the buffer for speed, ignore failure */
3393 _dbus_string_set_length (&loader->data, INITIAL_LOADER_DATA_LEN);
3394 _dbus_string_set_length (&loader->data, 0);
3400 * Increments the reference count of the loader.
3402 * @param loader the loader.
3405 _dbus_message_loader_ref (DBusMessageLoader *loader)
3407 loader->refcount += 1;
3411 * Decrements the reference count of the loader and finalizes the
3412 * loader when the count reaches zero.
3414 * @param loader the loader.
3417 _dbus_message_loader_unref (DBusMessageLoader *loader)
3419 loader->refcount -= 1;
3420 if (loader->refcount == 0)
3422 _dbus_list_foreach (&loader->messages,
3423 (DBusForeachFunction) dbus_message_unref,
3425 _dbus_list_clear (&loader->messages);
3426 _dbus_string_free (&loader->data);
3432 * Gets the buffer to use for reading data from the network. Network
3433 * data is read directly into an allocated buffer, which is then used
3434 * in the DBusMessage, to avoid as many extra memcpy's as possible.
3435 * The buffer must always be returned immediately using
3436 * _dbus_message_loader_return_buffer(), even if no bytes are
3437 * successfully read.
3439 * @todo this function can be a lot more clever. For example
3440 * it can probably always return a buffer size to read exactly
3441 * the body of the next message, thus avoiding any memory wastage
3444 * @todo we need to enforce a max length on strings in header fields.
3446 * @param loader the message loader.
3447 * @param buffer the buffer
3450 _dbus_message_loader_get_buffer (DBusMessageLoader *loader,
3451 DBusString **buffer)
3453 _dbus_assert (!loader->buffer_outstanding);
3455 *buffer = &loader->data;
3457 loader->buffer_outstanding = TRUE;
3461 * The smallest header size that can occur.
3462 * (It won't be valid)
3464 #define DBUS_MINIMUM_HEADER_SIZE 16
3466 /** Pack four characters as in "abcd" into a uint32 */
3467 #define FOUR_CHARS_TO_UINT32(a, b, c, d) \
3468 ((((dbus_uint32_t)a) << 24) | \
3469 (((dbus_uint32_t)b) << 16) | \
3470 (((dbus_uint32_t)c) << 8) | \
3473 /** DBUS_HEADER_FIELD_NAME packed into a dbus_uint32_t */
3474 #define DBUS_HEADER_FIELD_NAME_AS_UINT32 \
3475 FOUR_CHARS_TO_UINT32 ('n', 'a', 'm', 'e')
3477 /** DBUS_HEADER_FIELD_SERVICE packed into a dbus_uint32_t */
3478 #define DBUS_HEADER_FIELD_SERVICE_AS_UINT32 \
3479 FOUR_CHARS_TO_UINT32 ('s', 'r', 'v', 'c')
3481 /** DBUS_HEADER_FIELD_REPLY packed into a dbus_uint32_t */
3482 #define DBUS_HEADER_FIELD_REPLY_AS_UINT32 \
3483 FOUR_CHARS_TO_UINT32 ('r', 'p', 'l', 'y')
3485 /** DBUS_HEADER_FIELD_SENDER Packed into a dbus_uint32_t */
3486 #define DBUS_HEADER_FIELD_SENDER_AS_UINT32 \
3487 FOUR_CHARS_TO_UINT32 ('s', 'n', 'd', 'r')
3489 /* FIXME impose max length on name, srvc, sndr */
3491 decode_header_data (const DBusString *data,
3494 HeaderField fields[FIELD_LAST],
3495 int *message_padding)
3502 if (header_len < 16)
3506 while (i < FIELD_LAST)
3508 fields[i].offset = -1;
3512 fields[FIELD_HEADER_LENGTH].offset = 4;
3513 fields[FIELD_BODY_LENGTH].offset = 8;
3514 fields[FIELD_CLIENT_SERIAL].offset = 12;
3516 /* Now handle the named fields. A real named field is at least 4
3517 * bytes for the name, plus a type code (1 byte) plus padding. So
3518 * if we have less than 8 bytes left, it must be alignment padding,
3519 * not a field. While >= 8 bytes can't be entirely alignment
3523 while ((pos + 7) < header_len)
3525 pos = _DBUS_ALIGN_VALUE (pos, 4);
3527 if ((pos + 4) > header_len)
3530 field =_dbus_string_get_const_data_len (data, pos, 4);
3533 _dbus_assert (_DBUS_ALIGN_ADDRESS (field, 4) == field);
3535 switch (DBUS_UINT32_FROM_BE (*(int*)field))
3537 case DBUS_HEADER_FIELD_SERVICE_AS_UINT32:
3538 if (fields[FIELD_SERVICE].offset >= 0)
3540 _dbus_verbose ("%s field provided twice\n",
3541 DBUS_HEADER_FIELD_SERVICE);
3545 fields[FIELD_SERVICE].offset = _DBUS_ALIGN_VALUE (pos + 1, 4);
3547 _dbus_verbose ("Found service name at offset %d\n",
3548 fields[FIELD_SERVICE].offset);
3552 case DBUS_HEADER_FIELD_NAME_AS_UINT32:
3553 if (fields[FIELD_NAME].offset >= 0)
3555 _dbus_verbose ("%s field provided twice\n",
3556 DBUS_HEADER_FIELD_NAME);
3560 fields[FIELD_NAME].offset = _DBUS_ALIGN_VALUE (pos + 1, 4);
3563 _dbus_verbose ("Found message name at offset %d\n",
3564 fields[FIELD_NAME].offset);
3567 case DBUS_HEADER_FIELD_SENDER_AS_UINT32:
3568 if (fields[FIELD_SENDER].offset >= 0)
3570 _dbus_verbose ("%s field provided twice\n",
3571 DBUS_HEADER_FIELD_SENDER);
3575 fields[FIELD_SENDER].offset = _DBUS_ALIGN_VALUE (pos + 1, 4);
3577 _dbus_verbose ("Found sender name at offset %d\n",
3578 fields[FIELD_NAME].offset);
3581 case DBUS_HEADER_FIELD_REPLY_AS_UINT32:
3582 if (fields[FIELD_REPLY_SERIAL].offset >= 0)
3584 _dbus_verbose ("%s field provided twice\n",
3585 DBUS_HEADER_FIELD_REPLY);
3589 fields[FIELD_REPLY_SERIAL].offset = _DBUS_ALIGN_VALUE (pos + 1, 4);
3591 _dbus_verbose ("Found reply serial at offset %d\n",
3592 fields[FIELD_REPLY_SERIAL].offset);
3596 _dbus_verbose ("Ignoring an unknown header field: %c%c%c%c at offset %d\n",
3597 field[0], field[1], field[2], field[3], pos);
3600 if (!_dbus_marshal_validate_type (data, pos, &type, &pos))
3602 _dbus_verbose ("Failed to validate type of named header field\n");
3606 if (!_dbus_marshal_validate_arg (data, byte_order, 0, type, -1, pos, &new_pos))
3608 _dbus_verbose ("Failed to validate argument to named header field\n");
3612 if (new_pos > header_len)
3614 _dbus_verbose ("Named header field tries to extend beyond header length\n");
3621 if (pos < header_len)
3623 /* Alignment padding, verify that it's nul */
3624 _dbus_assert ((header_len - pos) < 8);
3626 if (!_dbus_string_validate_nul (data,
3627 pos, (header_len - pos)))
3629 _dbus_verbose ("header alignment padding is not nul\n");
3634 if (fields[FIELD_NAME].offset < 0)
3636 _dbus_verbose ("No %s field provided\n",
3637 DBUS_HEADER_FIELD_NAME);
3641 if (message_padding)
3642 *message_padding = header_len - pos;
3648 * Returns a buffer obtained from _dbus_message_loader_get_buffer(),
3649 * indicating to the loader how many bytes of the buffer were filled
3650 * in. This function must always be called, even if no bytes were
3651 * successfully read.
3653 * @param loader the loader.
3654 * @param buffer the buffer.
3655 * @param bytes_read number of bytes that were read into the buffer.
3658 _dbus_message_loader_return_buffer (DBusMessageLoader *loader,
3662 _dbus_assert (loader->buffer_outstanding);
3663 _dbus_assert (buffer == &loader->data);
3665 loader->buffer_outstanding = FALSE;
3669 * Converts buffered data into messages.
3671 * @param loader the loader.
3672 * @returns #TRUE if we had enough memory to finish.
3675 _dbus_message_loader_queue_messages (DBusMessageLoader *loader)
3677 if (loader->corrupted)
3680 while (_dbus_string_get_length (&loader->data) >= 16)
3682 DBusMessage *message;
3683 const char *header_data;
3684 int byte_order, header_len, body_len, header_padding;
3685 dbus_uint32_t header_len_unsigned, body_len_unsigned;
3687 header_data = _dbus_string_get_const_data_len (&loader->data, 0, 16);
3689 _dbus_assert (_DBUS_ALIGN_ADDRESS (header_data, 4) == header_data);
3691 if (header_data[2] != DBUS_MAJOR_PROTOCOL_VERSION)
3693 _dbus_verbose ("Message has protocol version %d ours is %d\n",
3694 (int) header_data[2], DBUS_MAJOR_PROTOCOL_VERSION);
3695 loader->corrupted = TRUE;
3699 byte_order = header_data[0];
3701 if (byte_order != DBUS_LITTLE_ENDIAN &&
3702 byte_order != DBUS_BIG_ENDIAN)
3704 _dbus_verbose ("Message with bad byte order '%c' received\n",
3706 loader->corrupted = TRUE;
3710 header_len_unsigned = _dbus_unpack_uint32 (byte_order, header_data + 4);
3711 body_len_unsigned = _dbus_unpack_uint32 (byte_order, header_data + 8);
3713 if (header_len_unsigned < 16)
3715 _dbus_verbose ("Message had broken too-small header length %u\n",
3716 header_len_unsigned);
3717 loader->corrupted = TRUE;
3721 if (header_len_unsigned > (unsigned) MAX_SANE_MESSAGE_SIZE ||
3722 body_len_unsigned > (unsigned) MAX_SANE_MESSAGE_SIZE)
3724 _dbus_verbose ("Header or body length too large (%u %u)\n",
3725 header_len_unsigned,
3727 loader->corrupted = TRUE;
3731 /* Now that we know the values are in signed range, get
3732 * rid of stupid unsigned, just causes bugs
3734 header_len = header_len_unsigned;
3735 body_len = body_len_unsigned;
3737 if (_DBUS_ALIGN_VALUE (header_len, 8) != header_len_unsigned)
3740 _dbus_verbose ("header length %d is not aligned to 8 bytes\n",
3742 loader->corrupted = TRUE;
3746 if (header_len + body_len > loader->max_message_size)
3748 _dbus_verbose ("Message claimed length header = %d body = %d exceeds max message length %ld\n",
3749 header_len, body_len, loader->max_message_size);
3750 loader->corrupted = TRUE;
3754 if (_dbus_string_get_length (&loader->data) >= (header_len + body_len))
3756 HeaderField fields[FIELD_LAST];
3761 _dbus_verbose_bytes_of_string (&loader->data, 0, header_len + body_len);
3763 if (!decode_header_data (&loader->data, header_len, byte_order,
3764 fields, &header_padding))
3766 _dbus_verbose ("Header was invalid\n");
3767 loader->corrupted = TRUE;
3771 next_arg = header_len;
3772 while (next_arg < (header_len + body_len))
3775 int prev = next_arg;
3777 if (!_dbus_marshal_validate_type (&loader->data, next_arg,
3780 _dbus_verbose ("invalid typecode at offset %d\n", prev);
3781 loader->corrupted = TRUE;
3785 if (!_dbus_marshal_validate_arg (&loader->data,
3792 _dbus_verbose ("invalid type data at %d, next_arg\n", next_arg);
3793 loader->corrupted = TRUE;
3797 _dbus_assert (next_arg > prev);
3800 if (next_arg > (header_len + body_len))
3802 _dbus_verbose ("end of last arg at %d but message has len %d+%d=%d\n",
3803 next_arg, header_len, body_len,
3804 header_len + body_len);
3805 loader->corrupted = TRUE;
3809 message = dbus_message_new_empty_header ();
3810 if (message == NULL)
3812 _dbus_verbose ("Failed to allocate empty message\n");
3816 message->byte_order = byte_order;
3817 message->header_padding = header_padding;
3819 /* Copy in the offsets we found */
3821 while (i < FIELD_LAST)
3823 message->header_fields[i] = fields[i];
3827 if (!_dbus_list_append (&loader->messages, message))
3829 _dbus_verbose ("Failed to append new message to loader queue\n");
3830 dbus_message_unref (message);
3834 _dbus_assert (_dbus_string_get_length (&message->header) == 0);
3835 _dbus_assert (_dbus_string_get_length (&message->body) == 0);
3837 _dbus_assert (_dbus_string_get_length (&loader->data) >=
3838 (header_len + body_len));
3840 if (!_dbus_string_move_len (&loader->data, 0, header_len, &message->header, 0))
3842 _dbus_verbose ("Failed to move header into new message\n");
3843 _dbus_list_remove_last (&loader->messages, message);
3844 dbus_message_unref (message);
3848 if (!_dbus_string_move_len (&loader->data, 0, body_len, &message->body, 0))
3852 _dbus_verbose ("Failed to move body into new message\n");
3854 /* put the header back, we'll try again later */
3855 result = _dbus_string_copy_len (&message->header, 0, header_len,
3857 _dbus_assert (result); /* because DBusString never reallocs smaller */
3859 _dbus_list_remove_last (&loader->messages, message);
3860 dbus_message_unref (message);
3864 _dbus_assert (_dbus_string_get_length (&message->header) == header_len);
3865 _dbus_assert (_dbus_string_get_length (&message->body) == body_len);
3867 /* Fill in caches */
3868 message->reply_serial = get_int_field (message,
3869 FIELD_REPLY_SERIAL);
3870 message->client_serial = get_int_field (message,
3871 FIELD_CLIENT_SERIAL);
3873 _dbus_verbose ("Loaded message %p\n", message);
3883 * Peeks at first loaded message, returns #NULL if no messages have
3886 * @param loader the loader.
3887 * @returns the next message, or #NULL if none.
3890 _dbus_message_loader_peek_message (DBusMessageLoader *loader)
3892 if (loader->messages)
3893 return loader->messages->data;
3899 * Pops a loaded message (passing ownership of the message
3900 * to the caller). Returns #NULL if no messages have been
3903 * @param loader the loader.
3904 * @returns the next message, or #NULL if none.
3907 _dbus_message_loader_pop_message (DBusMessageLoader *loader)
3909 return _dbus_list_pop_first (&loader->messages);
3913 * Pops a loaded message inside a list link (passing ownership of the
3914 * message and link to the caller). Returns #NULL if no messages have
3917 * @param loader the loader.
3918 * @returns the next message link, or #NULL if none.
3921 _dbus_message_loader_pop_message_link (DBusMessageLoader *loader)
3923 return _dbus_list_pop_first_link (&loader->messages);
3927 * Checks whether the loader is confused due to bad data.
3928 * If messages are received that are invalid, the
3929 * loader gets confused and gives up permanently.
3930 * This state is called "corrupted."
3932 * @param loader the loader
3933 * @returns #TRUE if the loader is hosed.
3936 _dbus_message_loader_get_is_corrupted (DBusMessageLoader *loader)
3938 return loader->corrupted;
3942 * Sets the maximum size message we allow.
3944 * @param loader the loader
3945 * @param size the max message size in bytes
3948 _dbus_message_loader_set_max_message_size (DBusMessageLoader *loader,
3951 if (size > MAX_SANE_MESSAGE_SIZE)
3953 _dbus_verbose ("clamping requested max message size %ld to %d\n",
3954 size, MAX_SANE_MESSAGE_SIZE);
3955 size = MAX_SANE_MESSAGE_SIZE;
3957 loader->max_message_size = size;
3961 * Gets the maximum allowed message size in bytes.
3963 * @param loader the loader
3964 * @returns max size in bytes
3967 _dbus_message_loader_get_max_message_size (DBusMessageLoader *loader)
3969 return loader->max_message_size;
3973 #ifdef DBUS_BUILD_TESTS
3974 #include "dbus-test.h"
3978 message_iter_test (DBusMessage *message)
3980 DBusMessageIter iter, dict, array, array2;
3982 dbus_int32_t *our_int_array;
3985 dbus_message_iter_init (message, &iter);
3988 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_STRING)
3989 _dbus_assert_not_reached ("Argument type isn't string");
3991 str = dbus_message_iter_get_string (&iter);
3992 if (strcmp (str, "Test string") != 0)
3993 _dbus_assert_not_reached ("Strings differ");
3996 if (!dbus_message_iter_next (&iter))
3997 _dbus_assert_not_reached ("Reached end of arguments");
3999 /* Signed integer tests */
4000 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_INT32)
4001 _dbus_assert_not_reached ("Argument type isn't int32");
4003 if (dbus_message_iter_get_int32 (&iter) != -0x12345678)
4004 _dbus_assert_not_reached ("Signed integers differ");
4006 if (!dbus_message_iter_next (&iter))
4007 _dbus_assert_not_reached ("Reached end of fields");
4009 /* Unsigned integer tests */
4010 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_UINT32)
4011 _dbus_assert_not_reached ("Argument type isn't int32");
4013 if (dbus_message_iter_get_uint32 (&iter) != 0xedd1e)
4014 _dbus_assert_not_reached ("Unsigned integers differ");
4016 if (!dbus_message_iter_next (&iter))
4017 _dbus_assert_not_reached ("Reached end of arguments");
4020 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DOUBLE)
4021 _dbus_assert_not_reached ("Argument type isn't double");
4023 if (dbus_message_iter_get_double (&iter) != 3.14159)
4024 _dbus_assert_not_reached ("Doubles differ");
4026 if (!dbus_message_iter_next (&iter))
4027 _dbus_assert_not_reached ("Reached end of arguments");
4029 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_ARRAY)
4030 _dbus_assert_not_reached ("Argument type not an array");
4032 if (dbus_message_iter_get_array_type (&iter) != DBUS_TYPE_UINT32)
4033 _dbus_assert_not_reached ("Array type not uint32");
4036 if (!dbus_message_iter_init_array_iterator (&iter, &array, NULL))
4037 _dbus_assert_not_reached ("Array init failed");
4039 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_UINT32)
4040 _dbus_assert_not_reached ("Argument type isn't int32");
4042 if (dbus_message_iter_get_uint32 (&array) != 0x12345678)
4043 _dbus_assert_not_reached ("Unsigned integers differ");
4045 if (!dbus_message_iter_next (&array))
4046 _dbus_assert_not_reached ("Reached end of arguments");
4048 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_UINT32)
4049 _dbus_assert_not_reached ("Argument type isn't int32");
4051 if (dbus_message_iter_get_uint32 (&array) != 0x23456781)
4052 _dbus_assert_not_reached ("Unsigned integers differ");
4054 if (dbus_message_iter_next (&array))
4055 _dbus_assert_not_reached ("Didn't reach end of arguments");
4057 if (!dbus_message_iter_next (&iter))
4058 _dbus_assert_not_reached ("Reached end of arguments");
4063 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DICT)
4064 _dbus_assert_not_reached ("not dict type");
4066 if (!dbus_message_iter_init_dict_iterator (&iter, &dict))
4067 _dbus_assert_not_reached ("dict iter failed");
4069 str = dbus_message_iter_get_dict_key (&dict);
4070 if (str == NULL || strcmp (str, "test") != 0)
4071 _dbus_assert_not_reached ("wrong dict key");
4074 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_UINT32)
4075 _dbus_assert_not_reached ("wrong dict entry type");
4077 if (dbus_message_iter_get_uint32 (&dict) != 0xDEADBEEF)
4078 _dbus_assert_not_reached ("wrong dict entry value");
4080 if (!dbus_message_iter_next (&dict))
4081 _dbus_assert_not_reached ("reached end of dict");
4083 /* array of array of int32 (in dict) */
4085 str = dbus_message_iter_get_dict_key (&dict);
4086 if (str == NULL || strcmp (str, "array") != 0)
4087 _dbus_assert_not_reached ("wrong dict key");
4090 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_ARRAY)
4091 _dbus_assert_not_reached ("Argument type not an array");
4093 if (dbus_message_iter_get_array_type (&dict) != DBUS_TYPE_ARRAY)
4094 _dbus_assert_not_reached ("Array type not array");
4096 if (!dbus_message_iter_init_array_iterator (&dict, &array, NULL))
4097 _dbus_assert_not_reached ("Array init failed");
4099 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_ARRAY)
4100 _dbus_assert_not_reached ("Argument type isn't array");
4102 if (dbus_message_iter_get_array_type (&array) != DBUS_TYPE_INT32)
4103 _dbus_assert_not_reached ("Array type not int32");
4105 if (!dbus_message_iter_init_array_iterator (&array, &array2, NULL))
4106 _dbus_assert_not_reached ("Array init failed");
4108 if (dbus_message_iter_get_arg_type (&array2) != DBUS_TYPE_INT32)
4109 _dbus_assert_not_reached ("Argument type isn't int32");
4111 if (dbus_message_iter_get_int32 (&array2) != 0x12345678)
4112 _dbus_assert_not_reached ("Signed integers differ");
4114 if (!dbus_message_iter_next (&array2))
4115 _dbus_assert_not_reached ("Reached end of arguments");
4117 if (dbus_message_iter_get_int32 (&array2) != 0x23456781)
4118 _dbus_assert_not_reached ("Signed integers differ");
4120 if (dbus_message_iter_next (&array2))
4121 _dbus_assert_not_reached ("Didn't reached end of arguments");
4123 if (!dbus_message_iter_next (&array))
4124 _dbus_assert_not_reached ("Reached end of arguments");
4126 if (dbus_message_iter_get_array_type (&array) != DBUS_TYPE_INT32)
4127 _dbus_assert_not_reached ("Array type not int32");
4129 if (!dbus_message_iter_get_int32_array (&array,
4132 _dbus_assert_not_reached ("couldn't get int32 array");
4134 _dbus_assert (array_len == 3);
4135 _dbus_assert (our_int_array[0] == 0x34567812 &&
4136 our_int_array[1] == 0x45678123 &&
4137 our_int_array[2] == 0x56781234);
4138 dbus_free (our_int_array);
4140 if (dbus_message_iter_next (&array))
4141 _dbus_assert_not_reached ("Didn't reach end of array");
4143 if (dbus_message_iter_next (&dict))
4144 _dbus_assert_not_reached ("Didn't reach end of dict");
4146 if (!dbus_message_iter_next (&iter))
4147 _dbus_assert_not_reached ("Reached end of arguments");
4149 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_UINT32)
4150 _dbus_assert_not_reached ("wrong type after dict");
4152 if (dbus_message_iter_get_uint32 (&iter) != 0xCAFEBABE)
4153 _dbus_assert_not_reached ("wrong value after dict");
4156 if (dbus_message_iter_next (&iter))
4157 _dbus_assert_not_reached ("Didn't reach end of arguments");
4162 check_message_handling_type (DBusMessageIter *iter,
4165 DBusMessageIter child_iter;
4171 case DBUS_TYPE_BYTE:
4172 dbus_message_iter_get_byte (iter);
4174 case DBUS_TYPE_BOOLEAN:
4175 dbus_message_iter_get_boolean (iter);
4177 case DBUS_TYPE_INT32:
4178 dbus_message_iter_get_int32 (iter);
4180 case DBUS_TYPE_UINT32:
4181 dbus_message_iter_get_uint32 (iter);
4183 case DBUS_TYPE_DOUBLE:
4184 dbus_message_iter_get_double (iter);
4186 case DBUS_TYPE_STRING:
4189 str = dbus_message_iter_get_string (iter);
4192 _dbus_warn ("NULL string in message\n");
4198 case DBUS_TYPE_NAMED:
4201 unsigned char *data;
4204 name = dbus_message_iter_get_named (iter, &data, &len);
4207 _dbus_warn ("error reading name from named type\n");
4214 case DBUS_TYPE_ARRAY:
4218 if (!dbus_message_iter_init_array_iterator (iter, &child_iter, &array_type))
4220 _dbus_warn ("Failed to init array iterator\n");
4224 while (dbus_message_iter_has_next (&child_iter))
4226 if (!check_message_handling_type (&child_iter, array_type))
4228 _dbus_warn ("error in array element\n");
4232 if (!dbus_message_iter_next (&child_iter))
4237 case DBUS_TYPE_DICT:
4242 if (!dbus_message_iter_init_dict_iterator (iter, &child_iter))
4244 _dbus_warn ("Failed to init dict iterator\n");
4248 while ((entry_type = dbus_message_iter_get_arg_type (&child_iter)) != DBUS_TYPE_INVALID)
4250 key = dbus_message_iter_get_dict_key (&child_iter);
4253 _dbus_warn ("error reading dict key\n");
4258 if (!check_message_handling_type (&child_iter, entry_type))
4260 _dbus_warn ("error in dict value\n");
4264 if (!dbus_message_iter_next (&child_iter))
4271 _dbus_warn ("unknown type %d\n", type);
4280 check_message_handling (DBusMessage *message)
4282 DBusMessageIter iter;
4285 dbus_int32_t client_serial;
4289 client_serial = dbus_message_get_serial (message);
4291 /* can't use set_serial due to the assertions at the start of it */
4292 set_int_field (message, FIELD_CLIENT_SERIAL,
4295 if (client_serial != dbus_message_get_serial (message))
4297 _dbus_warn ("get/set cycle for client_serial did not succeed\n");
4301 /* If we implement message_set_arg (message, n, value)
4302 * then we would want to test it here
4305 dbus_message_iter_init (message, &iter);
4306 while ((type = dbus_message_iter_get_arg_type (&iter)) != DBUS_TYPE_INVALID)
4308 if (!check_message_handling_type (&iter, type))
4311 if (!dbus_message_iter_next (&iter))
4322 check_have_valid_message (DBusMessageLoader *loader)
4324 DBusMessage *message;
4330 if (!_dbus_message_loader_queue_messages (loader))
4331 _dbus_assert_not_reached ("no memory to queue messages");
4333 if (_dbus_message_loader_get_is_corrupted (loader))
4335 _dbus_warn ("loader corrupted on message that was expected to be valid\n");
4339 message = _dbus_message_loader_pop_message (loader);
4340 if (message == NULL)
4342 _dbus_warn ("didn't load message that was expected to be valid (message not popped)\n");
4346 if (_dbus_string_get_length (&loader->data) > 0)
4348 _dbus_warn ("had leftover bytes from expected-to-be-valid single message\n");
4352 /* Verify that we're able to properly deal with the message.
4353 * For example, this would detect improper handling of messages
4354 * in nonstandard byte order.
4356 if (!check_message_handling (message))
4363 dbus_message_unref (message);
4369 check_invalid_message (DBusMessageLoader *loader)
4375 if (!_dbus_message_loader_queue_messages (loader))
4376 _dbus_assert_not_reached ("no memory to queue messages");
4378 if (!_dbus_message_loader_get_is_corrupted (loader))
4380 _dbus_warn ("loader not corrupted on message that was expected to be invalid\n");
4391 check_incomplete_message (DBusMessageLoader *loader)
4393 DBusMessage *message;
4399 if (!_dbus_message_loader_queue_messages (loader))
4400 _dbus_assert_not_reached ("no memory to queue messages");
4402 if (_dbus_message_loader_get_is_corrupted (loader))
4404 _dbus_warn ("loader corrupted on message that was expected to be valid (but incomplete)\n");
4408 message = _dbus_message_loader_pop_message (loader);
4409 if (message != NULL)
4411 _dbus_warn ("loaded message that was expected to be incomplete\n");
4419 dbus_message_unref (message);
4424 check_loader_results (DBusMessageLoader *loader,
4425 DBusMessageValidity validity)
4427 if (!_dbus_message_loader_queue_messages (loader))
4428 _dbus_assert_not_reached ("no memory to queue messages");
4432 case _DBUS_MESSAGE_VALID:
4433 return check_have_valid_message (loader);
4434 case _DBUS_MESSAGE_INVALID:
4435 return check_invalid_message (loader);
4436 case _DBUS_MESSAGE_INCOMPLETE:
4437 return check_incomplete_message (loader);
4438 case _DBUS_MESSAGE_UNKNOWN:
4442 _dbus_assert_not_reached ("bad DBusMessageValidity");
4448 * Loads the message in the given message file.
4450 * @param filename filename to load
4451 * @param is_raw if #TRUE load as binary data, if #FALSE as message builder language
4452 * @param data string to load message into
4453 * @returns #TRUE if the message was loaded
4456 dbus_internal_do_not_use_load_message_file (const DBusString *filename,
4468 _dbus_verbose ("Loading raw %s\n", _dbus_string_get_const_data (filename));
4469 dbus_error_init (&error);
4470 if (!_dbus_file_get_contents (data, filename, &error))
4472 _dbus_warn ("Could not load message file %s: %s\n",
4473 _dbus_string_get_const_data (filename),
4475 dbus_error_free (&error);
4481 if (!_dbus_message_data_load (data, filename))
4483 _dbus_warn ("Could not load message file %s\n",
4484 _dbus_string_get_const_data (filename));
4497 * Tries loading the message in the given message file
4498 * and verifies that DBusMessageLoader can handle it.
4500 * @param filename filename to load
4501 * @param is_raw if #TRUE load as binary data, if #FALSE as message builder language
4502 * @param expected_validity what the message has to be like to return #TRUE
4503 * @returns #TRUE if the message has the expected validity
4506 dbus_internal_do_not_use_try_message_file (const DBusString *filename,
4508 DBusMessageValidity expected_validity)
4515 if (!_dbus_string_init (&data))
4516 _dbus_assert_not_reached ("could not allocate string\n");
4518 if (!dbus_internal_do_not_use_load_message_file (filename, is_raw,
4522 retval = dbus_internal_do_not_use_try_message_data (&data, expected_validity);
4528 if (_dbus_string_get_length (&data) > 0)
4529 _dbus_verbose_bytes_of_string (&data, 0,
4530 _dbus_string_get_length (&data));
4532 _dbus_warn ("Failed message loader test on %s\n",
4533 _dbus_string_get_const_data (filename));
4536 _dbus_string_free (&data);
4542 * Tries loading the given message data.
4545 * @param data the message data
4546 * @param expected_validity what the message has to be like to return #TRUE
4547 * @returns #TRUE if the message has the expected validity
4550 dbus_internal_do_not_use_try_message_data (const DBusString *data,
4551 DBusMessageValidity expected_validity)
4553 DBusMessageLoader *loader;
4561 /* Write the data one byte at a time */
4563 loader = _dbus_message_loader_new ();
4565 len = _dbus_string_get_length (data);
4566 for (i = 0; i < len; i++)
4570 _dbus_message_loader_get_buffer (loader, &buffer);
4571 _dbus_string_append_byte (buffer,
4572 _dbus_string_get_byte (data, i));
4573 _dbus_message_loader_return_buffer (loader, buffer, 1);
4576 if (!check_loader_results (loader, expected_validity))
4579 _dbus_message_loader_unref (loader);
4582 /* Write the data all at once */
4584 loader = _dbus_message_loader_new ();
4589 _dbus_message_loader_get_buffer (loader, &buffer);
4590 _dbus_string_copy (data, 0, buffer,
4591 _dbus_string_get_length (buffer));
4592 _dbus_message_loader_return_buffer (loader, buffer, 1);
4595 if (!check_loader_results (loader, expected_validity))
4598 _dbus_message_loader_unref (loader);
4601 /* Write the data 2 bytes at a time */
4603 loader = _dbus_message_loader_new ();
4605 len = _dbus_string_get_length (data);
4606 for (i = 0; i < len; i += 2)
4610 _dbus_message_loader_get_buffer (loader, &buffer);
4611 _dbus_string_append_byte (buffer,
4612 _dbus_string_get_byte (data, i));
4614 _dbus_string_append_byte (buffer,
4615 _dbus_string_get_byte (data, i+1));
4616 _dbus_message_loader_return_buffer (loader, buffer, 1);
4619 if (!check_loader_results (loader, expected_validity))
4622 _dbus_message_loader_unref (loader);
4630 _dbus_message_loader_unref (loader);
4636 process_test_subdir (const DBusString *test_base_dir,
4638 DBusMessageValidity validity,
4639 DBusForeachMessageFileFunc function,
4642 DBusString test_directory;
4643 DBusString filename;
4651 if (!_dbus_string_init (&test_directory))
4652 _dbus_assert_not_reached ("didn't allocate test_directory\n");
4654 _dbus_string_init_const (&filename, subdir);
4656 if (!_dbus_string_copy (test_base_dir, 0,
4657 &test_directory, 0))
4658 _dbus_assert_not_reached ("couldn't copy test_base_dir to test_directory");
4660 if (!_dbus_concat_dir_and_file (&test_directory, &filename))
4661 _dbus_assert_not_reached ("couldn't allocate full path");
4663 _dbus_string_free (&filename);
4664 if (!_dbus_string_init (&filename))
4665 _dbus_assert_not_reached ("didn't allocate filename string\n");
4667 dbus_error_init (&error);
4668 dir = _dbus_directory_open (&test_directory, &error);
4671 _dbus_warn ("Could not open %s: %s\n",
4672 _dbus_string_get_const_data (&test_directory),
4674 dbus_error_free (&error);
4678 printf ("Testing:\n");
4681 while (_dbus_directory_get_next_file (dir, &filename, &error))
4683 DBusString full_path;
4686 if (!_dbus_string_init (&full_path))
4687 _dbus_assert_not_reached ("couldn't init string");
4689 if (!_dbus_string_copy (&test_directory, 0, &full_path, 0))
4690 _dbus_assert_not_reached ("couldn't copy dir to full_path");
4692 if (!_dbus_concat_dir_and_file (&full_path, &filename))
4693 _dbus_assert_not_reached ("couldn't concat file to dir");
4695 if (_dbus_string_ends_with_c_str (&filename, ".message"))
4697 else if (_dbus_string_ends_with_c_str (&filename, ".message-raw"))
4701 _dbus_verbose ("Skipping non-.message file %s\n",
4702 _dbus_string_get_const_data (&filename));
4703 _dbus_string_free (&full_path);
4708 _dbus_string_get_const_data (&filename));
4710 _dbus_verbose (" expecting %s\n",
4711 validity == _DBUS_MESSAGE_VALID ? "valid" :
4712 (validity == _DBUS_MESSAGE_INVALID ? "invalid" :
4713 (validity == _DBUS_MESSAGE_INCOMPLETE ? "incomplete" : "unknown")));
4715 if (! (*function) (&full_path, is_raw, validity, user_data))
4717 _dbus_string_free (&full_path);
4721 _dbus_string_free (&full_path);
4724 if (dbus_error_is_set (&error))
4726 _dbus_warn ("Could not get next file in %s: %s\n",
4727 _dbus_string_get_const_data (&test_directory),
4729 dbus_error_free (&error);
4738 _dbus_directory_close (dir);
4739 _dbus_string_free (&test_directory);
4740 _dbus_string_free (&filename);
4746 * Runs the given function on every message file in the test suite.
4747 * The function should return #FALSE on test failure or fatal error.
4749 * @param test_data_dir root dir of the test suite data files (top_srcdir/test/data)
4750 * @param func the function to run
4751 * @param user_data data for function
4752 * @returns #FALSE if there's a failure
4755 dbus_internal_do_not_use_foreach_message_file (const char *test_data_dir,
4756 DBusForeachMessageFileFunc func,
4759 DBusString test_directory;
4764 _dbus_string_init_const (&test_directory, test_data_dir);
4766 if (!process_test_subdir (&test_directory, "valid-messages",
4767 _DBUS_MESSAGE_VALID, func, user_data))
4770 if (!process_test_subdir (&test_directory, "invalid-messages",
4771 _DBUS_MESSAGE_INVALID, func, user_data))
4774 if (!process_test_subdir (&test_directory, "incomplete-messages",
4775 _DBUS_MESSAGE_INCOMPLETE, func, user_data))
4782 _dbus_string_free (&test_directory);
4788 verify_test_message (DBusMessage *message)
4790 dbus_int32_t our_int;
4793 dbus_bool_t our_bool;
4794 dbus_int32_t *our_int_array;
4795 dbus_uint32_t our_uint32;
4796 int our_int_array_len;
4797 DBusMessageIter iter, dict;
4800 dbus_message_iter_init (message, &iter);
4802 dbus_error_init (&error);
4803 if (!dbus_message_iter_get_args (&iter, &error,
4804 DBUS_TYPE_INT32, &our_int,
4805 DBUS_TYPE_STRING, &our_str,
4806 DBUS_TYPE_DOUBLE, &our_double,
4807 DBUS_TYPE_BOOLEAN, &our_bool,
4808 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, &our_int_array, &our_int_array_len,
4811 _dbus_verbose ("error: %s - %s\n", error.name, (error.message != NULL)?error.message: "no message");
4812 _dbus_assert_not_reached ("Could not get arguments");
4815 if (our_int != -0x12345678)
4816 _dbus_assert_not_reached ("integers differ!");
4818 if (our_double != 3.14159)
4819 _dbus_assert_not_reached ("doubles differ!");
4821 if (strcmp (our_str, "Test string") != 0)
4822 _dbus_assert_not_reached ("strings differ!");
4823 dbus_free (our_str);
4826 _dbus_assert_not_reached ("booleans differ");
4828 if (our_int_array_len != 4 ||
4829 our_int_array[0] != 0x12345678 ||
4830 our_int_array[1] != 0x23456781 ||
4831 our_int_array[2] != 0x34567812 ||
4832 our_int_array[3] != 0x45678123)
4833 _dbus_assert_not_reached ("array differ");
4834 dbus_free (our_int_array);
4836 if (!dbus_message_iter_next (&iter))
4837 _dbus_assert_not_reached ("Reached end of arguments");
4839 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DICT)
4840 _dbus_assert_not_reached ("not dict type");
4842 if (!dbus_message_iter_init_dict_iterator (&iter, &dict))
4843 _dbus_assert_not_reached ("dict iter failed");
4845 our_str = dbus_message_iter_get_dict_key (&dict);
4846 if (our_str == NULL || strcmp (our_str, "test") != 0)
4847 _dbus_assert_not_reached ("wrong dict key");
4848 dbus_free (our_str);
4850 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_UINT32)
4852 _dbus_verbose ("dict entry type: %d\n", dbus_message_iter_get_arg_type (&dict));
4853 _dbus_assert_not_reached ("wrong dict entry type");
4856 if ((our_uint32 = dbus_message_iter_get_uint32 (&dict)) != 0xDEADBEEF)
4858 _dbus_verbose ("dict entry val: %x\n", our_uint32);
4859 _dbus_assert_not_reached ("wrong dict entry value");
4862 if (dbus_message_iter_next (&dict))
4863 _dbus_assert_not_reached ("Didn't reach end of dict");
4865 if (!dbus_message_iter_next (&iter))
4866 _dbus_assert_not_reached ("Reached end of arguments");
4868 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_UINT32)
4869 _dbus_assert_not_reached ("wrong type after dict");
4871 if (dbus_message_iter_get_uint32 (&iter) != 0xCAFEBABE)
4872 _dbus_assert_not_reached ("wrong value after dict");
4874 if (dbus_message_iter_next (&iter))
4875 _dbus_assert_not_reached ("Didn't reach end of arguments");
4879 * @ingroup DBusMessageInternals
4880 * Unit test for DBusMessage.
4882 * @returns #TRUE on success.
4885 _dbus_message_test (const char *test_data_dir)
4887 DBusMessage *message;
4888 DBusMessageLoader *loader;
4889 DBusMessageIter iter, child_iter, child_iter2, child_iter3;
4895 const dbus_uint32_t our_int32_array[] = { 0x12345678, 0x23456781, 0x34567812, 0x45678123 };
4897 _dbus_assert (sizeof (DBusMessageRealIter) <= sizeof (DBusMessageIter));
4899 /* Test the vararg functions */
4900 message = dbus_message_new ("org.freedesktop.DBus.Test", "testMessage");
4901 _dbus_message_set_serial (message, 1);
4902 dbus_message_append_args (message,
4903 DBUS_TYPE_INT32, -0x12345678,
4904 DBUS_TYPE_STRING, "Test string",
4905 DBUS_TYPE_DOUBLE, 3.14159,
4906 DBUS_TYPE_BOOLEAN, TRUE,
4907 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, our_int32_array, 4,
4910 dbus_message_append_iter_init (message, &iter);
4911 dbus_message_iter_append_dict (&iter, &child_iter);
4912 dbus_message_iter_append_dict_key (&child_iter, "test");
4913 dbus_message_iter_append_uint32 (&child_iter, 0xDEADBEEF);
4914 dbus_message_iter_append_uint32 (&iter, 0xCAFEBABE);
4916 _dbus_verbose_bytes_of_string (&message->header, 0,
4917 _dbus_string_get_length (&message->header));
4918 _dbus_verbose_bytes_of_string (&message->body, 0,
4919 _dbus_string_get_length (&message->body));
4921 verify_test_message (message);
4923 copy = dbus_message_copy (message);
4925 _dbus_assert (message->client_serial == copy->client_serial);
4926 _dbus_assert (message->reply_serial == copy->reply_serial);
4927 _dbus_assert (message->header_padding == copy->header_padding);
4929 _dbus_assert (_dbus_string_get_length (&message->header) ==
4930 _dbus_string_get_length (©->header));
4932 _dbus_assert (_dbus_string_get_length (&message->body) ==
4933 _dbus_string_get_length (©->body));
4935 verify_test_message (copy);
4937 name1 = dbus_message_get_name (message);
4938 name2 = dbus_message_get_name (copy);
4940 _dbus_assert (strcmp (name1, name2) == 0);
4942 dbus_message_unref (message);
4943 dbus_message_unref (copy);
4945 message = dbus_message_new ("org.freedesktop.DBus.Test", "testMessage");
4946 _dbus_message_set_serial (message, 1);
4947 dbus_message_set_reply_serial (message, 0x12345678);
4949 dbus_message_append_iter_init (message, &iter);
4950 dbus_message_iter_append_string (&iter, "Test string");
4951 dbus_message_iter_append_int32 (&iter, -0x12345678);
4952 dbus_message_iter_append_uint32 (&iter, 0xedd1e);
4953 dbus_message_iter_append_double (&iter, 3.14159);
4955 dbus_message_iter_append_array (&iter, &child_iter, DBUS_TYPE_UINT32);
4956 dbus_message_iter_append_uint32 (&child_iter, 0x12345678);
4957 dbus_message_iter_append_uint32 (&child_iter, 0x23456781);
4960 dbus_message_iter_append_dict (&iter, &child_iter);
4961 dbus_message_iter_append_dict_key (&child_iter, "test");
4962 dbus_message_iter_append_uint32 (&child_iter, 0xDEADBEEF);
4964 /* array of array of int32 (in dict) */
4965 dbus_message_iter_append_dict_key (&child_iter, "array");
4966 dbus_message_iter_append_array (&child_iter, &child_iter2, DBUS_TYPE_ARRAY);
4967 dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_INT32);
4968 dbus_message_iter_append_int32 (&child_iter3, 0x12345678);
4969 dbus_message_iter_append_int32 (&child_iter3, 0x23456781);
4970 _dbus_warn ("next call expected to fail with wrong array type\n");
4971 _dbus_assert (!dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_UINT32));
4972 dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_INT32);
4973 dbus_message_iter_append_int32 (&child_iter3, 0x34567812);
4974 dbus_message_iter_append_int32 (&child_iter3, 0x45678123);
4975 dbus_message_iter_append_int32 (&child_iter3, 0x56781234);
4977 dbus_message_iter_append_uint32 (&iter, 0xCAFEBABE);
4981 message_iter_test (message);
4983 /* Message loader test */
4984 _dbus_message_lock (message);
4985 loader = _dbus_message_loader_new ();
4987 /* Write the header data one byte at a time */
4988 data = _dbus_string_get_const_data (&message->header);
4989 for (i = 0; i < _dbus_string_get_length (&message->header); i++)
4993 _dbus_message_loader_get_buffer (loader, &buffer);
4994 _dbus_string_append_byte (buffer, data[i]);
4995 _dbus_message_loader_return_buffer (loader, buffer, 1);
4998 /* Write the body data one byte at a time */
4999 data = _dbus_string_get_const_data (&message->body);
5000 for (i = 0; i < _dbus_string_get_length (&message->body); i++)
5004 _dbus_message_loader_get_buffer (loader, &buffer);
5005 _dbus_string_append_byte (buffer, data[i]);
5006 _dbus_message_loader_return_buffer (loader, buffer, 1);
5009 dbus_message_unref (message);
5011 /* Now pop back the message */
5012 if (!_dbus_message_loader_queue_messages (loader))
5013 _dbus_assert_not_reached ("no memory to queue messages");
5015 if (_dbus_message_loader_get_is_corrupted (loader))
5016 _dbus_assert_not_reached ("message loader corrupted");
5018 message = _dbus_message_loader_pop_message (loader);
5020 _dbus_assert_not_reached ("received a NULL message");
5022 if (dbus_message_get_reply_serial (message) != 0x12345678)
5023 _dbus_assert_not_reached ("reply serial fields differ");
5025 message_iter_test (message);
5027 dbus_message_unref (message);
5028 _dbus_message_loader_unref (loader);
5030 /* Now load every message in test_data_dir if we have one */
5031 if (test_data_dir == NULL)
5034 return dbus_internal_do_not_use_foreach_message_file (test_data_dir,
5035 (DBusForeachMessageFileFunc)
5036 dbus_internal_do_not_use_try_message_file,
5040 #endif /* DBUS_BUILD_TESTS */