1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* dbus-message.c DBusMessage object
4 * Copyright (C) 2002, 2003 Red Hat Inc.
5 * Copyright (C) 2002, 2003 CodeFactory AB
7 * Licensed under the Academic Free License version 1.2
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include "dbus-internals.h"
26 #include "dbus-marshal.h"
27 #include "dbus-message.h"
28 #include "dbus-message-internal.h"
29 #include "dbus-memory.h"
30 #include "dbus-list.h"
31 #include "dbus-message-builder.h"
35 * @defgroup DBusMessageInternals DBusMessage implementation details
36 * @ingroup DBusInternals
37 * @brief DBusMessage private implementation details.
39 * The guts of DBusMessage and its methods.
57 static dbus_bool_t field_is_named[FIELD_LAST] =
59 FALSE, /* FIELD_HEADER_LENGTH */
60 FALSE, /* FIELD_BODY_LENGTH */
61 FALSE, /* FIELD_CLIENT_SERIAL */
62 TRUE, /* FIELD_NAME */
63 TRUE, /* FIELD_SERVICE */
64 TRUE, /* FIELD_SENDER */
65 TRUE /* FIELD_REPLY_SERIAL */
70 int offset; /**< Offset to start of field (location of name of field
76 * @brief Internals of DBusMessage
78 * Object representing a message received from or to be sent to
79 * another application. This is an opaque object, all members
84 dbus_atomic_t refcount; /**< Reference count */
86 DBusString header; /**< Header network data, stored
87 * separately from body so we can
88 * independently realloc it.
91 HeaderField header_fields[FIELD_LAST]; /**< Track the location
92 * of each field in "header"
95 dbus_uint32_t client_serial; /**< Cached client serial value for speed */
96 dbus_uint32_t reply_serial; /**< Cached reply serial value for speed */
98 int header_padding; /**< bytes of alignment in header */
100 DBusString body; /**< Body network data. */
102 char byte_order; /**< Message byte order. */
104 DBusList *size_counters; /**< 0-N DBusCounter used to track message size. */
105 long size_counter_delta; /**< Size we incremented the size counters by. */
107 dbus_uint32_t changed_stamp; /**< Incremented when iterators are invalidated. */
109 unsigned int locked : 1; /**< Message being sent, no modifications allowed. */
113 DBUS_MESSAGE_ITER_TYPE_MESSAGE,
114 DBUS_MESSAGE_ITER_TYPE_ARRAY,
115 DBUS_MESSAGE_ITER_TYPE_DICT
118 /** typedef for internals of message iterator */
119 typedef struct DBusMessageRealIter DBusMessageRealIter;
122 * @brief Internals of DBusMessageIter
124 * Object representing a position in a message. All fields are internal.
126 struct DBusMessageRealIter
128 DBusMessageRealIter *parent_iter; /**< parent iter, or NULL */
129 DBusMessage *message; /**< Message used */
130 dbus_uint32_t changed_stamp; /**< stamp to detect invalid iters */
132 /* This is an int instead of an enum to get a guaranteed size for the dummy: */
133 int type; /**< type of iter */
135 int pos; /**< Current position in the string */
136 int end; /**< position right after the container */
137 int container_start; /**< offset of the start of the container */
138 int container_length_pos; /**< offset of the length of the container */
140 int wrote_dict_key; /**< whether we wrote the dict key for the current dict element */
142 int array_type_pos; /**< pointer to the position of the array element type */
143 int array_type_done; /**< TRUE if the array type is fully finished */
147 * Gets the data to be sent over the network for this message.
148 * The header and then the body should be written out.
149 * This function is guaranteed to always return the same
150 * data once a message is locked (with _dbus_message_lock()).
152 * @param message the message.
153 * @param header return location for message header data.
154 * @param body return location for message body data.
157 _dbus_message_get_network_data (DBusMessage *message,
158 const DBusString **header,
159 const DBusString **body)
161 _dbus_assert (message->locked);
163 *header = &message->header;
164 *body = &message->body;
168 clear_header_padding (DBusMessage *message)
170 _dbus_string_shorten (&message->header,
171 message->header_padding);
172 message->header_padding = 0;
176 append_header_padding (DBusMessage *message)
179 old_len = _dbus_string_get_length (&message->header);
180 if (!_dbus_string_align_length (&message->header, 8))
183 message->header_padding = _dbus_string_get_length (&message->header) - old_len;
189 adjust_field_offsets (DBusMessage *message,
199 while (i < FIELD_LAST)
201 if (message->header_fields[i].offset > offsets_after)
202 message->header_fields[i].offset += delta;
208 #ifdef DBUS_BUILD_TESTS
209 /* tests-only until it's actually used */
211 get_int_field (DBusMessage *message,
216 _dbus_assert (field < FIELD_LAST);
218 offset = message->header_fields[field].offset;
221 return -1; /* useless if -1 is a valid value of course */
223 return _dbus_demarshal_int32 (&message->header,
231 get_uint_field (DBusMessage *message,
236 _dbus_assert (field < FIELD_LAST);
238 offset = message->header_fields[field].offset;
241 return -1; /* useless if -1 is a valid value of course */
243 return _dbus_demarshal_uint32 (&message->header,
250 get_string_field (DBusMessage *message,
257 offset = message->header_fields[field].offset;
259 _dbus_assert (field < FIELD_LAST);
264 /* offset points to string length, string data follows it */
265 /* FIXME _dbus_demarshal_const_string() that returned
266 * a reference to the string plus its len might be nice.
270 *len = _dbus_demarshal_uint32 (&message->header,
275 data = _dbus_string_get_const_data (&message->header);
277 return data + (offset + 4);
280 #ifdef DBUS_BUILD_TESTS
282 append_int_field (DBusMessage *message,
289 _dbus_assert (!message->locked);
291 clear_header_padding (message);
293 orig_len = _dbus_string_get_length (&message->header);
295 if (!_dbus_string_align_length (&message->header, 4))
298 if (!_dbus_string_append_len (&message->header, name, 4))
301 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_INT32))
304 if (!_dbus_string_align_length (&message->header, 4))
307 message->header_fields[FIELD_REPLY_SERIAL].offset =
308 _dbus_string_get_length (&message->header);
310 if (!_dbus_marshal_int32 (&message->header, message->byte_order,
314 if (!append_header_padding (message))
320 message->header_fields[field].offset = -1;
321 _dbus_string_set_length (&message->header, orig_len);
323 /* this must succeed because it was allocated on function entry and
324 * DBusString doesn't ever realloc smaller
326 if (!append_header_padding (message))
327 _dbus_assert_not_reached ("failed to reappend header padding");
333 append_uint_field (DBusMessage *message,
340 _dbus_assert (!message->locked);
342 clear_header_padding (message);
344 orig_len = _dbus_string_get_length (&message->header);
346 if (!_dbus_string_align_length (&message->header, 4))
349 if (!_dbus_string_append_len (&message->header, name, 4))
352 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_UINT32))
355 if (!_dbus_string_align_length (&message->header, 4))
358 message->header_fields[FIELD_REPLY_SERIAL].offset =
359 _dbus_string_get_length (&message->header);
361 if (!_dbus_marshal_uint32 (&message->header, message->byte_order,
365 if (!append_header_padding (message))
371 message->header_fields[field].offset = -1;
372 _dbus_string_set_length (&message->header, orig_len);
374 /* this must succeed because it was allocated on function entry and
375 * DBusString doesn't ever realloc smaller
377 if (!append_header_padding (message))
378 _dbus_assert_not_reached ("failed to reappend header padding");
383 append_string_field (DBusMessage *message,
390 _dbus_assert (!message->locked);
392 clear_header_padding (message);
394 orig_len = _dbus_string_get_length (&message->header);
396 if (!_dbus_string_align_length (&message->header, 4))
399 if (!_dbus_string_append_len (&message->header, name, 4))
402 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_STRING))
405 if (!_dbus_string_align_length (&message->header, 4))
408 message->header_fields[field].offset =
409 _dbus_string_get_length (&message->header);
411 if (!_dbus_marshal_string (&message->header, message->byte_order,
415 if (!append_header_padding (message))
421 message->header_fields[field].offset = -1;
422 _dbus_string_set_length (&message->header, orig_len);
424 /* this must succeed because it was allocated on function entry and
425 * DBusString doesn't ever realloc smaller
427 if (!append_header_padding (message))
428 _dbus_assert_not_reached ("failed to reappend header padding");
433 #ifdef DBUS_BUILD_TESTS
434 /* This isn't used, but building it when tests are enabled just to
435 * keep it compiling if we need it in future
438 delete_int_or_uint_field (DBusMessage *message,
441 int offset = message->header_fields[field].offset;
443 _dbus_assert (!message->locked);
444 _dbus_assert (field_is_named[field]);
449 clear_header_padding (message);
451 /* The field typecode and name take up 8 bytes */
452 _dbus_string_delete (&message->header,
456 message->header_fields[field].offset = -1;
458 adjust_field_offsets (message,
462 append_header_padding (message);
467 delete_string_field (DBusMessage *message,
470 int offset = message->header_fields[field].offset;
474 _dbus_assert (!message->locked);
475 _dbus_assert (field_is_named[field]);
480 clear_header_padding (message);
482 get_string_field (message, field, &len);
484 /* The field typecode and name take up 8 bytes, and the nul
485 * termination is 1 bytes, string length integer is 4 bytes
487 delete_len = 8 + 4 + 1 + len;
489 _dbus_string_delete (&message->header,
493 message->header_fields[field].offset = -1;
495 adjust_field_offsets (message,
499 append_header_padding (message);
502 #ifdef DBUS_BUILD_TESTS
504 set_int_field (DBusMessage *message,
508 int offset = message->header_fields[field].offset;
510 _dbus_assert (!message->locked);
514 /* need to append the field */
519 _dbus_assert_not_reached ("appending an int field we don't support appending");
525 _dbus_marshal_set_int32 (&message->header,
535 set_uint_field (DBusMessage *message,
539 int offset = message->header_fields[field].offset;
541 _dbus_assert (!message->locked);
545 /* need to append the field */
549 case FIELD_REPLY_SERIAL:
550 return append_uint_field (message, field,
551 DBUS_HEADER_FIELD_REPLY,
554 _dbus_assert_not_reached ("appending a uint field we don't support appending");
560 _dbus_marshal_set_uint32 (&message->header,
569 set_string_field (DBusMessage *message,
573 int offset = message->header_fields[field].offset;
575 _dbus_assert (!message->locked);
576 _dbus_assert (value != NULL);
580 /* need to append the field */
585 return append_string_field (message, field,
586 DBUS_HEADER_FIELD_SENDER,
589 _dbus_assert_not_reached ("appending a string field we don't support appending");
600 clear_header_padding (message);
602 old_len = _dbus_string_get_length (&message->header);
604 len = strlen (value);
606 _dbus_string_init_const_len (&v, value,
607 len + 1); /* include nul */
608 if (!_dbus_marshal_set_string (&message->header,
614 new_len = _dbus_string_get_length (&message->header);
616 adjust_field_offsets (message,
620 if (!append_header_padding (message))
626 /* this must succeed because it was allocated on function entry and
627 * DBusString doesn't ever realloc smaller
629 if (!append_header_padding (message))
630 _dbus_assert_not_reached ("failed to reappend header padding");
637 * Sets the serial number of a message.
638 * This can only be done once on a message.
640 * @param message the message
641 * @param serial the serial
644 _dbus_message_set_serial (DBusMessage *message,
647 _dbus_assert (!message->locked);
648 _dbus_assert (dbus_message_get_serial (message) == 0);
650 set_uint_field (message, FIELD_CLIENT_SERIAL,
652 message->client_serial = serial;
656 * Sets the reply serial of a message (the client serial
657 * of the message this is a reply to).
659 * @param message the message
660 * @param reply_serial the client serial
661 * @returns #FALSE if not enough memory
664 dbus_message_set_reply_serial (DBusMessage *message,
665 dbus_uint32_t reply_serial)
667 _dbus_assert (!message->locked);
669 if (set_uint_field (message, FIELD_REPLY_SERIAL,
672 message->reply_serial = reply_serial;
680 * Returns the serial of a message or -1 if none has been specified.
681 * The message's serial number is provided by the application sending
682 * the message and is used to identify replies to this message.
684 * @param message the message
685 * @returns the client serial
688 dbus_message_get_serial (DBusMessage *message)
690 return message->client_serial;
694 * Returns the serial that the message is
695 * a reply to or 0 if none.
697 * @param message the message
698 * @returns the reply serial
701 dbus_message_get_reply_serial (DBusMessage *message)
703 return message->reply_serial;
707 * Adds a counter to be incremented immediately with the
708 * size of this message, and decremented by the size
709 * of this message when this message if finalized.
710 * The link contains a counter with its refcount already
711 * incremented, but the counter itself not incremented.
712 * Ownership of link and counter refcount is passed to
715 * @param message the message
716 * @param link link with counter as data
719 _dbus_message_add_size_counter_link (DBusMessage *message,
722 /* right now we don't recompute the delta when message
723 * size changes, and that's OK for current purposes
724 * I think, but could be important to change later.
725 * Do recompute it whenever there are no outstanding counters,
726 * since it's basically free.
728 if (message->size_counters == NULL)
730 message->size_counter_delta =
731 _dbus_string_get_length (&message->header) +
732 _dbus_string_get_length (&message->body);
735 _dbus_verbose ("message has size %ld\n",
736 message->size_counter_delta);
740 _dbus_list_append_link (&message->size_counters, link);
742 _dbus_counter_adjust (link->data, message->size_counter_delta);
746 * Adds a counter to be incremented immediately with the
747 * size of this message, and decremented by the size
748 * of this message when this message if finalized.
750 * @param message the message
751 * @param counter the counter
752 * @returns #FALSE if no memory
755 _dbus_message_add_size_counter (DBusMessage *message,
756 DBusCounter *counter)
760 link = _dbus_list_alloc_link (counter);
764 _dbus_counter_ref (counter);
765 _dbus_message_add_size_counter_link (message, link);
771 * Removes a counter tracking the size of this message, and decrements
772 * the counter by the size of this message.
774 * @param message the message
775 * @param counter the counter
778 _dbus_message_remove_size_counter (DBusMessage *message,
779 DBusCounter *counter)
781 if (!_dbus_list_remove_last (&message->size_counters,
783 _dbus_assert_not_reached ("Removed a message size counter that was not added");
785 _dbus_counter_adjust (counter, message->size_counter_delta);
787 _dbus_counter_unref (counter);
791 dbus_message_create_header (DBusMessage *message,
797 if (!_dbus_string_append_byte (&message->header, message->byte_order))
801 if (!_dbus_string_append_byte (&message->header, flags))
804 if (!_dbus_string_append_byte (&message->header, DBUS_MAJOR_PROTOCOL_VERSION))
807 if (!_dbus_string_append_byte (&message->header, 0))
810 message->header_fields[FIELD_HEADER_LENGTH].offset = 4;
811 if (!_dbus_marshal_uint32 (&message->header, message->byte_order, 0))
814 message->header_fields[FIELD_BODY_LENGTH].offset = 8;
815 if (!_dbus_marshal_uint32 (&message->header, message->byte_order, 0))
818 message->header_fields[FIELD_CLIENT_SERIAL].offset = 12;
819 if (!_dbus_marshal_int32 (&message->header, message->byte_order, -1))
822 /* Marshal message service */
825 if (!append_string_field (message,
827 DBUS_HEADER_FIELD_SERVICE,
832 _dbus_assert (name != NULL);
833 if (!append_string_field (message,
835 DBUS_HEADER_FIELD_NAME,
843 * Locks a message. Allows checking that applications don't keep a
844 * reference to a message in the outgoing queue and change it
845 * underneath us. Messages are locked when they enter the outgoing
846 * queue (dbus_connection_send_message()), and the library complains
847 * if the message is modified while locked.
849 * @param message the message to lock.
852 _dbus_message_lock (DBusMessage *message)
854 if (!message->locked)
856 /* Fill in our lengths */
857 set_uint_field (message,
859 _dbus_string_get_length (&message->header));
861 set_uint_field (message,
863 _dbus_string_get_length (&message->body));
865 message->locked = TRUE;
872 * @defgroup DBusMessage DBusMessage
874 * @brief Message to be sent or received over a DBusConnection.
876 * A DBusMessage is the most basic unit of communication over a
877 * DBusConnection. A DBusConnection represents a stream of messages
878 * received from a remote application, and a stream of messages
879 * sent to a remote application.
885 * @typedef DBusMessage
887 * Opaque data type representing a message received from or to be
888 * sent to another application.
892 dbus_message_new_empty_header (void)
894 DBusMessage *message;
897 message = dbus_new0 (DBusMessage, 1);
901 message->refcount = 1;
902 message->byte_order = DBUS_COMPILER_BYTE_ORDER;
903 message->client_serial = 0;
904 message->reply_serial = 0;
907 while (i < FIELD_LAST)
909 message->header_fields[i].offset = -1;
913 if (!_dbus_string_init (&message->header))
919 if (!_dbus_string_init (&message->body))
921 _dbus_string_free (&message->header);
931 * Constructs a new message. Returns #NULL if memory can't be
932 * allocated for the message. The service may be #NULL in which case
933 * no service is set; this is appropriate when using D-BUS in a
934 * peer-to-peer context (no message bus).
936 * @todo reverse the arguments, first 'name' then 'service'
937 * as 'name' is more fundamental
939 * @param service service that the message should be sent to or #NULL
940 * @param name name of the message
941 * @returns a new DBusMessage, free with dbus_message_unref()
942 * @see dbus_message_unref()
945 dbus_message_new (const char *service,
948 DBusMessage *message;
950 message = dbus_message_new_empty_header ();
954 if (!dbus_message_create_header (message, service, name))
956 dbus_message_unref (message);
964 * Constructs a message that is a reply to some other
965 * message. Returns #NULL if memory can't be allocated
968 * @param original_message the message which the created
969 * message is a reply to.
970 * @returns a new DBusMessage, free with dbus_message_unref()
971 * @see dbus_message_new(), dbus_message_unref()
974 dbus_message_new_reply (DBusMessage *original_message)
976 DBusMessage *message;
977 const char *sender, *name;
979 sender = get_string_field (original_message,
981 name = get_string_field (original_message,
984 /* sender is allowed to be null here in peer-to-peer case */
986 message = dbus_message_new (sender, name);
991 if (!dbus_message_set_reply_serial (message,
992 dbus_message_get_serial (original_message)))
994 dbus_message_unref (message);
1002 * Creates a new message that is an error reply to a certain message.
1004 * @param original_message the original message
1005 * @param error_name the error name
1006 * @param error_message the error message string
1007 * @returns a new error message
1010 dbus_message_new_error_reply (DBusMessage *original_message,
1011 const char *error_name,
1012 const char *error_message)
1014 DBusMessage *message;
1016 DBusMessageIter iter;
1018 sender = get_string_field (original_message,
1019 FIELD_SENDER, NULL);
1021 _dbus_assert (sender != NULL);
1023 message = dbus_message_new (sender, error_name);
1025 if (message == NULL)
1028 if (!dbus_message_set_reply_serial (message,
1029 dbus_message_get_serial (original_message)))
1031 dbus_message_unref (message);
1035 dbus_message_append_iter_init (message, &iter);
1036 if (!dbus_message_iter_append_string (&iter, error_message))
1038 dbus_message_unref (message);
1042 dbus_message_set_is_error (message, TRUE);
1048 * Creates a new message that is an exact replica of the message
1049 * specified, except that its refcount is set to 1.
1051 * @param message the message.
1052 * @returns the new message.
1055 dbus_message_copy (const DBusMessage *message)
1057 DBusMessage *retval;
1060 retval = dbus_new0 (DBusMessage, 1);
1064 retval->refcount = 1;
1065 retval->byte_order = message->byte_order;
1066 retval->client_serial = message->client_serial;
1067 retval->reply_serial = message->reply_serial;
1068 retval->header_padding = message->header_padding;
1069 retval->locked = FALSE;
1071 if (!_dbus_string_init (&retval->header))
1077 if (!_dbus_string_init (&retval->body))
1079 _dbus_string_free (&retval->header);
1084 if (!_dbus_string_copy (&message->header, 0,
1085 &retval->header, 0))
1087 _dbus_string_free (&retval->header);
1088 _dbus_string_free (&retval->body);
1094 if (!_dbus_string_copy (&message->body, 0,
1097 _dbus_string_free (&retval->header);
1098 _dbus_string_free (&retval->body);
1104 for (i = 0; i < FIELD_LAST; i++)
1106 retval->header_fields[i].offset = message->header_fields[i].offset;
1114 * Increments the reference count of a DBusMessage.
1116 * @param message The message
1117 * @see dbus_message_unref
1120 dbus_message_ref (DBusMessage *message)
1122 dbus_atomic_t refcount;
1124 refcount = _dbus_atomic_inc (&message->refcount);
1125 _dbus_assert (refcount > 1);
1129 free_size_counter (void *element,
1132 DBusCounter *counter = element;
1133 DBusMessage *message = data;
1135 _dbus_counter_adjust (counter, - message->size_counter_delta);
1137 _dbus_counter_unref (counter);
1141 * Decrements the reference count of a DBusMessage.
1143 * @param message The message
1144 * @see dbus_message_ref
1147 dbus_message_unref (DBusMessage *message)
1149 dbus_atomic_t refcount;
1151 refcount = _dbus_atomic_dec (&message->refcount);
1153 _dbus_assert (refcount >= 0);
1157 _dbus_list_foreach (&message->size_counters,
1158 free_size_counter, message);
1159 _dbus_list_clear (&message->size_counters);
1161 _dbus_string_free (&message->header);
1162 _dbus_string_free (&message->body);
1164 dbus_free (message);
1169 * Gets the name of a message.
1171 * @param message the message
1172 * @returns the message name (should not be freed)
1175 dbus_message_get_name (DBusMessage *message)
1177 return get_string_field (message, FIELD_NAME, NULL);
1181 * Gets the destination service of a message.
1183 * @todo I think if we have set_sender/get_sender,
1184 * this function might be better named set_destination/
1185 * get_destination for clarity, as the sender
1186 * is also a service name.
1188 * @param message the message
1189 * @returns the message destination service (should not be freed)
1192 dbus_message_get_service (DBusMessage *message)
1194 return get_string_field (message, FIELD_SERVICE, NULL);
1198 * Appends fields to a message given a variable argument list. The
1199 * variable argument list should contain the type of the argument
1200 * followed by the value to add. Array values are specified by an int
1201 * typecode followed by a pointer to the array followed by an int
1202 * giving the length of the array. The argument list must be
1203 * terminated with DBUS_TYPE_INVALID.
1205 * This function doesn't support dicts or non-fundamental arrays.
1207 * This function supports #DBUS_TYPE_INT64 and #DBUS_TYPE_UINT64
1208 * only if #DBUS_HAVE_INT64 is defined.
1210 * @param message the message
1211 * @param first_arg_type type of the first argument
1212 * @param ... value of first argument, list of additional type-value pairs
1213 * @returns #TRUE on success
1216 dbus_message_append_args (DBusMessage *message,
1223 va_start (var_args, first_arg_type);
1224 retval = dbus_message_append_args_valist (message,
1233 * This function takes a va_list for use by language bindings.
1234 * It's otherwise the same as dbus_message_append_args().
1236 * @todo: Shouldn't this function clean up the changes to the message
1237 * on failures? (Yes)
1239 * @see dbus_message_append_args.
1240 * @param message the message
1241 * @param first_arg_type type of first argument
1242 * @param var_args value of first argument, then list of type/value pairs
1243 * @returns #TRUE on success
1246 dbus_message_append_args_valist (DBusMessage *message,
1251 DBusMessageIter iter;
1253 old_len = _dbus_string_get_length (&message->body);
1255 type = first_arg_type;
1257 dbus_message_append_iter_init (message, &iter);
1264 if (!dbus_message_iter_append_nil (&iter))
1267 case DBUS_TYPE_BOOLEAN:
1268 if (!dbus_message_iter_append_boolean (&iter, va_arg (var_args, dbus_bool_t)))
1271 case DBUS_TYPE_INT32:
1272 if (!dbus_message_iter_append_int32 (&iter, va_arg (var_args, dbus_int32_t)))
1275 case DBUS_TYPE_UINT32:
1276 if (!dbus_message_iter_append_uint32 (&iter, va_arg (var_args, dbus_uint32_t)))
1279 #ifdef DBUS_HAVE_INT64
1280 case DBUS_TYPE_INT64:
1281 if (!dbus_message_iter_append_int64 (&iter, va_arg (var_args, dbus_int64_t)))
1284 case DBUS_TYPE_UINT64:
1285 if (!dbus_message_iter_append_uint64 (&iter, va_arg (var_args, dbus_uint64_t)))
1288 #endif /* DBUS_HAVE_INT64 */
1289 case DBUS_TYPE_DOUBLE:
1290 if (!dbus_message_iter_append_double (&iter, va_arg (var_args, double)))
1293 case DBUS_TYPE_STRING:
1294 if (!dbus_message_iter_append_string (&iter, va_arg (var_args, const char *)))
1297 case DBUS_TYPE_NAMED:
1300 unsigned char *data;
1303 name = va_arg (var_args, const char *);
1304 data = va_arg (var_args, unsigned char *);
1305 len = va_arg (var_args, int);
1307 if (!dbus_message_iter_append_named (&iter, name, data, len))
1311 case DBUS_TYPE_ARRAY:
1316 type = va_arg (var_args, int);
1317 data = va_arg (var_args, void *);
1318 len = va_arg (var_args, int);
1322 case DBUS_TYPE_BYTE:
1323 if (!dbus_message_iter_append_byte_array (&iter, (unsigned char *)data, len))
1326 case DBUS_TYPE_BOOLEAN:
1327 if (!dbus_message_iter_append_boolean_array (&iter, (unsigned char *)data, len))
1330 case DBUS_TYPE_INT32:
1331 if (!dbus_message_iter_append_int32_array (&iter, (dbus_int32_t *)data, len))
1334 case DBUS_TYPE_UINT32:
1335 if (!dbus_message_iter_append_uint32_array (&iter, (dbus_uint32_t *)data, len))
1338 #ifdef DBUS_HAVE_INT64
1339 case DBUS_TYPE_INT64:
1340 if (!dbus_message_iter_append_int64_array (&iter, (dbus_int64_t *)data, len))
1343 case DBUS_TYPE_UINT64:
1344 if (!dbus_message_iter_append_uint64_array (&iter, (dbus_uint64_t *)data, len))
1347 #endif /* DBUS_HAVE_INT64 */
1348 case DBUS_TYPE_DOUBLE:
1349 if (!dbus_message_iter_append_double_array (&iter, (double *)data, len))
1352 case DBUS_TYPE_STRING:
1353 if (!dbus_message_iter_append_string_array (&iter, (const char **)data, len))
1357 case DBUS_TYPE_ARRAY:
1358 case DBUS_TYPE_NAMED:
1359 case DBUS_TYPE_DICT:
1360 _dbus_warn ("dbus_message_append_args_valist doesn't support recursive arrays\n");
1363 _dbus_warn ("Unknown field type %d\n", type);
1369 case DBUS_TYPE_DICT:
1370 _dbus_warn ("dbus_message_append_args_valist doesn't support dicts\n");
1373 _dbus_warn ("Unknown field type %d\n", type);
1377 type = va_arg (var_args, int);
1388 * Gets arguments from a message given a variable argument list.
1389 * The variable argument list should contain the type of the
1390 * argumen followed by a pointer to where the value should be
1391 * stored. The list is terminated with 0.
1393 * @param message the message
1394 * @param error error to be filled in on failure
1395 * @param first_arg_type the first argument type
1396 * @param ... location for first argument value, then list of type-location pairs
1397 * @returns #FALSE if the error was set
1400 dbus_message_get_args (DBusMessage *message,
1408 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1410 va_start (var_args, first_arg_type);
1411 retval = dbus_message_get_args_valist (message, error, first_arg_type, var_args);
1418 * This function takes a va_list for use by language bindings
1420 * @todo We need to free the argument data when an error occurs.
1422 * @see dbus_message_get_args
1423 * @param message the message
1424 * @param error error to be filled in
1425 * @param first_arg_type type of the first argument
1426 * @param var_args return location for first argument, followed by list of type/location pairs
1427 * @returns #FALSE if error was set
1430 dbus_message_get_args_valist (DBusMessage *message,
1435 DBusMessageIter iter;
1437 dbus_message_iter_init (message, &iter);
1438 return dbus_message_iter_get_args_valist (&iter, error, first_arg_type, var_args);
1442 * Gets arguments from a message iterator given a variable argument list.
1443 * The variable argument list should contain the type of the
1444 * argumen followed by a pointer to where the value should be
1445 * stored. The list is terminated with 0.
1447 * @param iter the message iterator
1448 * @param error error to be filled in on failure
1449 * @param first_arg_type the first argument type
1450 * @param ... location for first argument value, then list of type-location pairs
1451 * @returns #FALSE if the error was set
1454 dbus_message_iter_get_args (DBusMessageIter *iter,
1462 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1464 va_start (var_args, first_arg_type);
1465 retval = dbus_message_iter_get_args_valist (iter, error, first_arg_type, var_args);
1472 * This function takes a va_list for use by language bindings
1474 * This function supports #DBUS_TYPE_INT64 and #DBUS_TYPE_UINT64
1475 * only if #DBUS_HAVE_INT64 is defined.
1477 * @todo this function (or some lower-level non-convenience function)
1478 * needs better error handling; should allow the application to
1479 * distinguish between out of memory, and bad data from the remote
1480 * app. It also needs to not leak a bunch of args when it gets
1481 * to the arg that's bad, as that would be a security hole
1482 * (allow one app to force another to leak memory)
1484 * @todo We need to free the argument data when an error occurs.
1486 * @see dbus_message_get_args
1487 * @param iter the message iter
1488 * @param error error to be filled in
1489 * @param first_arg_type type of the first argument
1490 * @param var_args return location for first argument, followed by list of type/location pairs
1491 * @returns #FALSE if error was set
1494 dbus_message_iter_get_args_valist (DBusMessageIter *iter,
1499 int spec_type, msg_type, i;
1502 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1506 spec_type = first_arg_type;
1509 while (spec_type != 0)
1511 msg_type = dbus_message_iter_get_arg_type (iter);
1513 if (msg_type != spec_type)
1515 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1516 "Argument %d is specified to be of type \"%s\", but "
1517 "is actually of type \"%s\"\n", i,
1518 _dbus_type_to_string (spec_type),
1519 _dbus_type_to_string (msg_type));
1528 case DBUS_TYPE_BYTE:
1532 ptr = va_arg (var_args, unsigned char *);
1534 *ptr = dbus_message_iter_get_byte (iter);
1537 case DBUS_TYPE_BOOLEAN:
1541 ptr = va_arg (var_args, dbus_bool_t *);
1543 *ptr = dbus_message_iter_get_boolean (iter);
1546 case DBUS_TYPE_INT32:
1550 ptr = va_arg (var_args, dbus_int32_t *);
1552 *ptr = dbus_message_iter_get_int32 (iter);
1555 case DBUS_TYPE_UINT32:
1559 ptr = va_arg (var_args, dbus_uint32_t *);
1561 *ptr = dbus_message_iter_get_uint32 (iter);
1564 #ifdef DBUS_HAVE_INT64
1565 case DBUS_TYPE_INT64:
1569 ptr = va_arg (var_args, dbus_int64_t *);
1571 *ptr = dbus_message_iter_get_int64 (iter);
1574 case DBUS_TYPE_UINT64:
1578 ptr = va_arg (var_args, dbus_uint64_t *);
1580 *ptr = dbus_message_iter_get_uint64 (iter);
1583 #endif /* DBUS_HAVE_INT64 */
1585 case DBUS_TYPE_DOUBLE:
1589 ptr = va_arg (var_args, double *);
1591 *ptr = dbus_message_iter_get_double (iter);
1595 case DBUS_TYPE_STRING:
1599 ptr = va_arg (var_args, char **);
1601 *ptr = dbus_message_iter_get_string (iter);
1605 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1612 case DBUS_TYPE_NAMED:
1615 unsigned char **data;
1618 name = va_arg (var_args, char **);
1619 data = va_arg (var_args, unsigned char **);
1620 len = va_arg (var_args, int *);
1622 if (!dbus_message_iter_get_named (iter, name, data, len))
1624 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1629 case DBUS_TYPE_ARRAY:
1634 type = va_arg (var_args, int);
1635 data = va_arg (var_args, void *);
1636 len = va_arg (var_args, int *);
1638 if (dbus_message_iter_get_array_type (iter) != type)
1640 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1641 "Argument %d is specified to be of type \"array of %s\", but "
1642 "is actually of type \"array of %s\"\n", i,
1643 _dbus_type_to_string (type),
1644 _dbus_type_to_string (dbus_message_iter_get_array_type (iter)));
1650 case DBUS_TYPE_BYTE:
1651 if (!dbus_message_iter_get_byte_array (iter, (unsigned char **)data, len))
1653 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1657 case DBUS_TYPE_BOOLEAN:
1658 if (!dbus_message_iter_get_boolean_array (iter, (unsigned char **)data, len))
1660 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1664 case DBUS_TYPE_INT32:
1665 if (!dbus_message_iter_get_int32_array (iter, (dbus_int32_t **)data, len))
1667 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1671 case DBUS_TYPE_UINT32:
1672 if (!dbus_message_iter_get_uint32_array (iter, (dbus_uint32_t **)data, len))
1674 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1678 #ifdef DBUS_HAVE_INT64
1679 case DBUS_TYPE_INT64:
1680 if (!dbus_message_iter_get_int64_array (iter, (dbus_int64_t **)data, len))
1682 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1686 case DBUS_TYPE_UINT64:
1687 if (!dbus_message_iter_get_uint64_array (iter, (dbus_uint64_t **)data, len))
1689 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1693 #endif /* DBUS_HAVE_INT64 */
1694 case DBUS_TYPE_DOUBLE:
1695 if (!dbus_message_iter_get_double_array (iter, (double **)data, len))
1697 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1701 case DBUS_TYPE_STRING:
1702 if (!dbus_message_iter_get_string_array (iter, (char ***)data, len))
1704 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1709 case DBUS_TYPE_ARRAY:
1710 case DBUS_TYPE_NAMED:
1711 case DBUS_TYPE_DICT:
1712 _dbus_warn ("dbus_message_get_args_valist doesn't support recursive arrays\n");
1713 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1716 _dbus_warn ("Unknown field type %d\n", type);
1717 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1722 case DBUS_TYPE_DICT:
1723 _dbus_warn ("dbus_message_get_args_valist doesn't support dicts\n");
1724 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1727 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED, NULL);
1728 _dbus_warn ("Unknown field type %d\n", spec_type);
1732 spec_type = va_arg (var_args, int);
1733 if (spec_type != 0 && !dbus_message_iter_next (iter))
1735 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1736 "Message has only %d arguments, but more were expected", i);
1752 * Initializes a DBusMessageIter representing the arguments of the
1753 * message passed in.
1755 * @param message the message
1756 * @param iter pointer to an iterator to initialize
1759 dbus_message_iter_init (DBusMessage *message,
1760 DBusMessageIter *iter)
1762 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1764 _dbus_assert (sizeof (DBusMessageRealIter) <= sizeof (DBusMessageIter));
1766 real->message = message;
1767 real->parent_iter = NULL;
1768 real->changed_stamp = message->changed_stamp;
1770 real->type = DBUS_MESSAGE_ITER_TYPE_MESSAGE;
1772 real->end = _dbus_string_get_length (&message->body);
1774 real->container_start = 0;
1775 real->container_length_pos = 0;
1776 real->wrote_dict_key = 0;
1777 real->array_type_pos = 0;
1781 dbus_message_iter_check (DBusMessageRealIter *iter)
1783 if (iter->changed_stamp != iter->message->changed_stamp)
1784 _dbus_warn ("dbus iterator check failed: invalid iterator\n");
1785 if (iter->pos < 0 || iter->pos > iter->end)
1786 _dbus_warn ("dbus iterator check failed: invalid position\n");
1790 skip_array_type (DBusMessageRealIter *iter, int pos)
1796 data = _dbus_string_get_const_data_len (&iter->message->body,
1799 while (*data == DBUS_TYPE_ARRAY);
1805 dbus_message_iter_get_data_start (DBusMessageRealIter *iter, int *type)
1812 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
1813 data = _dbus_string_get_const_data_len (&iter->message->body,
1815 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1818 *type = DBUS_TYPE_INVALID;
1820 return skip_array_type (iter, iter->pos);
1822 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
1823 data = _dbus_string_get_const_data_len (&iter->message->body,
1824 iter->array_type_pos, 1);
1825 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1828 *type = DBUS_TYPE_INVALID;
1832 case DBUS_MESSAGE_ITER_TYPE_DICT:
1833 /* Get the length of the string */
1834 len = _dbus_demarshal_uint32 (&iter->message->body,
1835 iter->message->byte_order,
1837 pos = pos + len + 1;
1839 data = _dbus_string_get_const_data_len (&iter->message->body,
1841 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1844 *type = DBUS_TYPE_INVALID;
1846 return skip_array_type (iter, pos);
1849 _dbus_assert_not_reached ("Invalid iter type");
1852 *type = DBUS_TYPE_INVALID;
1858 * Checks if an iterator has any more fields.
1860 * @param iter the message iter
1861 * @returns #TRUE if there are more fields
1865 dbus_message_iter_has_next (DBusMessageIter *iter)
1867 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1871 dbus_message_iter_check (real);
1873 if (real->pos >= real->end)
1876 pos = dbus_message_iter_get_data_start (real, &type);
1878 if (!_dbus_marshal_get_arg_end_pos (&real->message->body,
1879 real->message->byte_order,
1880 type, pos, &end_pos))
1883 if (end_pos >= real->end)
1890 * Moves the iterator to the next field.
1892 * @param iter The message iter
1893 * @returns #TRUE if the iterator was moved to the next field
1896 dbus_message_iter_next (DBusMessageIter *iter)
1898 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1902 dbus_message_iter_check (real);
1904 pos = dbus_message_iter_get_data_start (real, &type);
1906 if (!_dbus_marshal_get_arg_end_pos (&real->message->body,
1907 real->message->byte_order,
1908 type, pos, &end_pos))
1911 if (end_pos >= real->end)
1914 real->pos = end_pos;
1920 * Returns the argument type of the argument that the
1921 * message iterator points at.
1923 * @param iter the message iter
1924 * @returns the field type
1927 dbus_message_iter_get_arg_type (DBusMessageIter *iter)
1929 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1932 dbus_message_iter_check (real);
1934 if (real->pos >= real->end)
1935 return DBUS_TYPE_INVALID;
1937 pos = dbus_message_iter_get_data_start (real, &type);
1943 iter_get_array_type (DBusMessageRealIter *iter, int *array_type_pos)
1946 int _array_type_pos;
1951 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
1952 _array_type_pos = iter->pos + 1;
1954 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
1955 _array_type_pos = iter->array_type_pos + 1;
1957 case DBUS_MESSAGE_ITER_TYPE_DICT:
1958 /* Get the length of the string */
1959 len = _dbus_demarshal_uint32 (&iter->message->body,
1960 iter->message->byte_order,
1962 pos = pos + len + 1;
1963 data = _dbus_string_get_const_data_len (&iter->message->body,
1965 _array_type_pos = pos + 1;
1968 _dbus_assert_not_reached ("wrong iter type");
1969 return DBUS_TYPE_INVALID;
1972 if (array_type_pos != NULL)
1973 *array_type_pos = _array_type_pos;
1975 data = _dbus_string_get_const_data_len (&iter->message->body,
1976 _array_type_pos, 1);
1977 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_LAST)
1980 return DBUS_TYPE_INVALID;
1985 * Returns the element type of the array that the
1986 * message iterator points at. Note that you need
1987 * to check that the iterator points to an array
1988 * prior to using this function.
1990 * @param iter the message iter
1991 * @returns the field type
1994 dbus_message_iter_get_array_type (DBusMessageIter *iter)
1996 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
1999 dbus_message_iter_check (real);
2001 if (real->pos >= real->end)
2002 return DBUS_TYPE_INVALID;
2004 pos = dbus_message_iter_get_data_start (real, &type);
2006 _dbus_assert (type == DBUS_TYPE_ARRAY);
2008 return iter_get_array_type (real, NULL);
2013 * Returns the string value that an iterator may point to.
2014 * Note that you need to check that the iterator points to
2015 * a string value before using this function.
2017 * @see dbus_message_iter_get_arg_type
2018 * @param iter the message iter
2019 * @returns the string
2022 dbus_message_iter_get_string (DBusMessageIter *iter)
2024 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2027 dbus_message_iter_check (real);
2029 pos = dbus_message_iter_get_data_start (real, &type);
2031 _dbus_assert (type == DBUS_TYPE_STRING);
2033 return _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2038 * Returns the name and data from a named type that an
2039 * iterator may point to. Note that you need to check that
2040 * the iterator points to a named type before using this
2043 * @see dbus_message_iter_get_arg_type
2044 * @param iter the message iter
2045 * @param name return location for the name
2046 * @param value return location for data
2047 * @param len return location for length of data
2048 * @returns TRUE if get succeed
2052 dbus_message_iter_get_named (DBusMessageIter *iter,
2054 unsigned char **value,
2057 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2061 dbus_message_iter_check (real);
2063 pos = dbus_message_iter_get_data_start (real, &type);
2065 _dbus_assert (type == DBUS_TYPE_NAMED);
2067 _name = _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2073 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2074 pos + 1, NULL, value, len))
2086 * Returns the byte value that an iterator may point to.
2087 * Note that you need to check that the iterator points to
2088 * a byte value before using this function.
2090 * @see dbus_message_iter_get_arg_type
2091 * @param iter the message iter
2092 * @returns the byte value
2095 dbus_message_iter_get_byte (DBusMessageIter *iter)
2097 unsigned char value;
2098 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2101 dbus_message_iter_check (real);
2103 pos = dbus_message_iter_get_data_start (real, &type);
2105 _dbus_assert (type == DBUS_TYPE_BYTE);
2107 value = _dbus_string_get_byte (&real->message->body, pos);
2114 * Returns the boolean value that an iterator may point to.
2115 * Note that you need to check that the iterator points to
2116 * a boolean value before using this function.
2118 * @see dbus_message_iter_get_arg_type
2119 * @param iter the message iter
2120 * @returns the boolean value
2123 dbus_message_iter_get_boolean (DBusMessageIter *iter)
2125 unsigned char value;
2126 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2129 dbus_message_iter_check (real);
2131 pos = dbus_message_iter_get_data_start (real, &type);
2133 _dbus_assert (type == DBUS_TYPE_BOOLEAN);
2135 value = _dbus_string_get_byte (&real->message->body, pos);
2141 * Returns the 32 bit signed integer value that an iterator may point to.
2142 * Note that you need to check that the iterator points to
2143 * a 32-bit integer value before using this function.
2145 * @see dbus_message_iter_get_arg_type
2146 * @param iter the message iter
2147 * @returns the integer
2150 dbus_message_iter_get_int32 (DBusMessageIter *iter)
2152 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2155 dbus_message_iter_check (real);
2157 pos = dbus_message_iter_get_data_start (real, &type);
2159 _dbus_assert (type == DBUS_TYPE_INT32);
2161 return _dbus_demarshal_int32 (&real->message->body, real->message->byte_order,
2166 * Returns the 32 bit unsigned integer value that an iterator may point to.
2167 * Note that you need to check that the iterator points to
2168 * a 32-bit unsigned integer value before using this function.
2170 * @see dbus_message_iter_get_arg_type
2171 * @param iter the message iter
2172 * @returns the integer
2175 dbus_message_iter_get_uint32 (DBusMessageIter *iter)
2177 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2180 dbus_message_iter_check (real);
2182 pos = dbus_message_iter_get_data_start (real, &type);
2184 _dbus_assert (type == DBUS_TYPE_UINT32);
2186 return _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2190 #ifdef DBUS_HAVE_INT64
2193 * Returns the 64 bit signed integer value that an iterator may point
2194 * to. Note that you need to check that the iterator points to a
2195 * 64-bit integer value before using this function.
2197 * This function only exists if #DBUS_HAVE_INT64 is defined.
2199 * @see dbus_message_iter_get_arg_type
2200 * @param iter the message iter
2201 * @returns the integer
2204 dbus_message_iter_get_int64 (DBusMessageIter *iter)
2206 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2209 dbus_message_iter_check (real);
2211 pos = dbus_message_iter_get_data_start (real, &type);
2213 _dbus_assert (type == DBUS_TYPE_INT64);
2215 return _dbus_demarshal_int64 (&real->message->body, real->message->byte_order,
2220 * Returns the 64 bit unsigned integer value that an iterator may point to.
2221 * Note that you need to check that the iterator points to
2222 * a 64-bit unsigned integer value before using this function.
2224 * This function only exists if #DBUS_HAVE_INT64 is defined.
2226 * @see dbus_message_iter_get_arg_type
2227 * @param iter the message iter
2228 * @returns the integer
2231 dbus_message_iter_get_uint64 (DBusMessageIter *iter)
2233 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2236 dbus_message_iter_check (real);
2238 pos = dbus_message_iter_get_data_start (real, &type);
2240 _dbus_assert (type == DBUS_TYPE_UINT64);
2242 return _dbus_demarshal_uint64 (&real->message->body, real->message->byte_order,
2246 #endif /* DBUS_HAVE_INT64 */
2249 * Returns the double value that an iterator may point to.
2250 * Note that you need to check that the iterator points to
2251 * a string value before using this function.
2253 * @see dbus_message_iter_get_arg_type
2254 * @param iter the message iter
2255 * @returns the double
2258 dbus_message_iter_get_double (DBusMessageIter *iter)
2260 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2263 dbus_message_iter_check (real);
2265 pos = dbus_message_iter_get_data_start (real, &type);
2267 _dbus_assert (type == DBUS_TYPE_DOUBLE);
2269 return _dbus_demarshal_double (&real->message->body, real->message->byte_order,
2274 * Initializes an iterator for the array that the iterator
2275 * may point to. Note that you need to check that the iterator
2276 * points to an array prior to using this function.
2278 * The array element type is returned in array_type, and the array
2279 * iterator can only be used to get that type of data.
2281 * @param iter the iterator
2282 * @param array_iter pointer to an iterator to initialize
2283 * @param array_type gets set to the type of the array elements
2284 * @returns #TRUE on success
2287 dbus_message_iter_init_array_iterator (DBusMessageIter *iter,
2288 DBusMessageIter *array_iter,
2291 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2292 DBusMessageRealIter *array_real = (DBusMessageRealIter *)array_iter;
2293 int type, pos, len_pos, len, array_type_pos;
2296 dbus_message_iter_check (real);
2298 pos = dbus_message_iter_get_data_start (real, &type);
2300 _dbus_assert (type == DBUS_TYPE_ARRAY);
2302 _array_type = iter_get_array_type (real, &array_type_pos);
2304 len_pos = _DBUS_ALIGN_VALUE (pos, sizeof (dbus_uint32_t));
2305 len = _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2308 array_real->parent_iter = real;
2309 array_real->message = real->message;
2310 array_real->changed_stamp = real->message->changed_stamp;
2312 array_real->type = DBUS_MESSAGE_ITER_TYPE_ARRAY;
2313 array_real->pos = pos;
2314 array_real->end = pos + len;
2316 array_real->container_start = pos;
2317 array_real->container_length_pos = len_pos;
2318 array_real->wrote_dict_key = 0;
2319 array_real->array_type_pos = array_type_pos;
2320 array_real->array_type_done = TRUE;
2322 if (array_type != NULL)
2323 *array_type = _array_type;
2330 * Initializes an iterator for the dict that the iterator
2331 * may point to. Note that you need to check that the iterator
2332 * points to a dict prior to using this function.
2334 * @param iter the iterator
2335 * @param dict_iter pointer to an iterator to initialize
2336 * @returns #TRUE on success
2339 dbus_message_iter_init_dict_iterator (DBusMessageIter *iter,
2340 DBusMessageIter *dict_iter)
2342 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2343 DBusMessageRealIter *dict_real = (DBusMessageRealIter *)dict_iter;
2344 int type, pos, len_pos, len;
2346 dbus_message_iter_check (real);
2348 pos = dbus_message_iter_get_data_start (real, &type);
2350 _dbus_assert (type == DBUS_TYPE_DICT);
2352 len_pos = _DBUS_ALIGN_VALUE (pos, sizeof (dbus_uint32_t));
2353 len = _dbus_demarshal_uint32 (&real->message->body, real->message->byte_order,
2356 dict_real->parent_iter = real;
2357 dict_real->message = real->message;
2358 dict_real->changed_stamp = real->message->changed_stamp;
2360 dict_real->type = DBUS_MESSAGE_ITER_TYPE_DICT;
2361 dict_real->pos = pos;
2362 dict_real->end = pos + len;
2364 dict_real->container_start = pos;
2365 dict_real->container_length_pos = len_pos;
2366 dict_real->wrote_dict_key = 0;
2372 * Returns the byte array that the iterator may point to.
2373 * Note that you need to check that the iterator points
2374 * to a byte array prior to using this function.
2376 * @param iter the iterator
2377 * @param value return location for array values
2378 * @param len return location for length of byte array
2379 * @returns #TRUE on success
2382 dbus_message_iter_get_byte_array (DBusMessageIter *iter,
2383 unsigned char **value,
2386 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2389 dbus_message_iter_check (real);
2391 pos = dbus_message_iter_get_data_start (real, &type);
2393 _dbus_assert (type == DBUS_TYPE_ARRAY);
2395 type = iter_get_array_type (real, NULL);
2397 _dbus_assert (type == DBUS_TYPE_BYTE);
2399 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2400 pos, NULL, value, len))
2407 * Returns the boolean array that the iterator may point to. Note that
2408 * you need to check that the iterator points to an array of the
2409 * correct type prior to using this function.
2411 * @param iter the iterator
2412 * @param value return location for the array
2413 * @param len return location for the array length
2414 * @returns #TRUE on success
2417 dbus_message_iter_get_boolean_array (DBusMessageIter *iter,
2418 unsigned char **value,
2421 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2424 dbus_message_iter_check (real);
2426 pos = dbus_message_iter_get_data_start (real, &type);
2428 _dbus_assert (type == DBUS_TYPE_ARRAY);
2430 type = iter_get_array_type (real, NULL);
2432 _dbus_assert (type == DBUS_TYPE_BOOLEAN);
2434 if (!_dbus_demarshal_byte_array (&real->message->body, real->message->byte_order,
2435 pos, NULL, value, len))
2442 * Returns the 32 bit signed integer array that the iterator may point
2443 * to. Note that you need to check that the iterator points to an
2444 * array of the correct type prior to using this function.
2446 * @param iter the iterator
2447 * @param value return location for the array
2448 * @param len return location for the array length
2449 * @returns #TRUE on success
2452 dbus_message_iter_get_int32_array (DBusMessageIter *iter,
2453 dbus_int32_t **value,
2456 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2459 dbus_message_iter_check (real);
2461 pos = dbus_message_iter_get_data_start (real, &type);
2463 _dbus_assert (type == DBUS_TYPE_ARRAY);
2465 type = iter_get_array_type (real, NULL);
2467 _dbus_assert (type == DBUS_TYPE_INT32);
2469 if (!_dbus_demarshal_int32_array (&real->message->body, real->message->byte_order,
2470 pos, NULL, value, len))
2477 * Returns the 32 bit unsigned integer array that the iterator may point
2478 * to. Note that you need to check that the iterator points to an
2479 * array of the correct type prior to using this function.
2481 * @param iter the iterator
2482 * @param value return location for the array
2483 * @param len return location for the array length
2484 * @returns #TRUE on success
2487 dbus_message_iter_get_uint32_array (DBusMessageIter *iter,
2488 dbus_uint32_t **value,
2491 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2494 dbus_message_iter_check (real);
2496 pos = dbus_message_iter_get_data_start (real, &type);
2498 _dbus_assert (type == DBUS_TYPE_ARRAY);
2500 type = iter_get_array_type (real, NULL);
2501 _dbus_assert (type == DBUS_TYPE_UINT32);
2503 if (!_dbus_demarshal_uint32_array (&real->message->body, real->message->byte_order,
2504 pos, NULL, value, len))
2510 #ifdef DBUS_HAVE_INT64
2513 * Returns the 64 bit signed integer array that the iterator may point
2514 * to. Note that you need to check that the iterator points to an
2515 * array of the correct type prior to using this function.
2517 * This function only exists if #DBUS_HAVE_INT64 is defined.
2519 * @param iter the iterator
2520 * @param value return location for the array
2521 * @param len return location for the array length
2522 * @returns #TRUE on success
2525 dbus_message_iter_get_int64_array (DBusMessageIter *iter,
2526 dbus_int64_t **value,
2529 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2532 dbus_message_iter_check (real);
2534 pos = dbus_message_iter_get_data_start (real, &type);
2536 _dbus_assert (type == DBUS_TYPE_ARRAY);
2538 type = iter_get_array_type (real, NULL);
2540 _dbus_assert (type == DBUS_TYPE_INT64);
2542 if (!_dbus_demarshal_int64_array (&real->message->body, real->message->byte_order,
2543 pos, NULL, value, len))
2550 * Returns the 64 bit unsigned integer array that the iterator may point
2551 * to. Note that you need to check that the iterator points to an
2552 * array of the correct type prior to using this function.
2554 * This function only exists if #DBUS_HAVE_INT64 is defined.
2556 * @param iter the iterator
2557 * @param value return location for the array
2558 * @param len return location for the array length
2559 * @returns #TRUE on success
2562 dbus_message_iter_get_uint64_array (DBusMessageIter *iter,
2563 dbus_uint64_t **value,
2566 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2569 dbus_message_iter_check (real);
2571 pos = dbus_message_iter_get_data_start (real, &type);
2573 _dbus_assert (type == DBUS_TYPE_ARRAY);
2575 type = iter_get_array_type (real, NULL);
2576 _dbus_assert (type == DBUS_TYPE_UINT64);
2578 if (!_dbus_demarshal_uint64_array (&real->message->body, real->message->byte_order,
2579 pos, NULL, value, len))
2585 #endif /* DBUS_HAVE_INT64 */
2588 * Returns the double array that the iterator may point to. Note that
2589 * you need to check that the iterator points to an array of the
2590 * correct type prior to using this function.
2592 * @param iter the iterator
2593 * @param value return location for the array
2594 * @param len return location for the array length
2595 * @returns #TRUE on success
2598 dbus_message_iter_get_double_array (DBusMessageIter *iter,
2602 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2605 dbus_message_iter_check (real);
2607 pos = dbus_message_iter_get_data_start (real, &type);
2609 _dbus_assert (type == DBUS_TYPE_ARRAY);
2611 type = iter_get_array_type (real, NULL);
2612 _dbus_assert (type == DBUS_TYPE_DOUBLE);
2614 if (!_dbus_demarshal_double_array (&real->message->body, real->message->byte_order,
2615 pos, NULL, value, len))
2622 * Returns the string array that the iterator may point to.
2623 * Note that you need to check that the iterator points
2624 * to a byte array prior to using this function.
2626 * The returned value is a #NULL-terminated array of strings.
2627 * Each string is a separate malloc block, and the array
2628 * itself is a malloc block. You can free this type of
2629 * string array with dbus_free_string_array().
2631 * @param iter the iterator
2632 * @param value return location for string values
2633 * @param len return location for length of byte array
2634 * @returns #TRUE on success
2637 dbus_message_iter_get_string_array (DBusMessageIter *iter,
2641 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2644 dbus_message_iter_check (real);
2646 pos = dbus_message_iter_get_data_start (real, &type);
2648 _dbus_assert (type == DBUS_TYPE_ARRAY);
2650 type = iter_get_array_type (real, NULL);
2651 _dbus_assert (type == DBUS_TYPE_STRING);
2653 if (!_dbus_demarshal_string_array (&real->message->body, real->message->byte_order,
2654 pos, NULL, value, len))
2661 * Returns the key name fot the dict entry that an iterator
2662 * may point to. Note that you need to check that the iterator
2663 * points to a dict entry before using this function.
2665 * @see dbus_message_iter_init_dict_iterator
2666 * @param iter the message iter
2667 * @returns the key name
2670 dbus_message_iter_get_dict_key (DBusMessageIter *iter)
2672 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2674 dbus_message_iter_check (real);
2676 _dbus_assert (real->type == DBUS_MESSAGE_ITER_TYPE_DICT);
2678 return _dbus_demarshal_string (&real->message->body, real->message->byte_order,
2683 * Initializes a DBusMessageIter pointing to the end of the
2684 * message. This iterator can be used to append data to the
2687 * @param message the message
2688 * @param iter pointer to an iterator to initialize
2691 dbus_message_append_iter_init (DBusMessage *message,
2692 DBusMessageIter *iter)
2694 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2696 real->message = message;
2697 real->parent_iter = NULL;
2698 real->changed_stamp = message->changed_stamp;
2700 real->type = DBUS_MESSAGE_ITER_TYPE_MESSAGE;
2701 real->end = _dbus_string_get_length (&real->message->body);
2702 real->pos = real->end;
2704 real->container_length_pos = 0;
2705 real->wrote_dict_key = 0;
2709 dbus_message_iter_append_check (DBusMessageRealIter *iter)
2711 _dbus_assert (!iter->message->locked);
2713 if (iter->changed_stamp != iter->message->changed_stamp)
2714 _dbus_warn ("dbus iterator check failed: invalid iterator");
2716 if (iter->pos != iter->end)
2717 _dbus_warn ("dbus iterator check failed: can only append at end of message");
2719 if (iter->pos != _dbus_string_get_length (&iter->message->body))
2720 _dbus_warn ("dbus iterator check failed: append pos not at end of message string");
2724 dbus_message_iter_append_type (DBusMessageRealIter *iter,
2730 case DBUS_MESSAGE_ITER_TYPE_MESSAGE:
2731 if (!_dbus_string_append_byte (&iter->message->body, type))
2735 case DBUS_MESSAGE_ITER_TYPE_ARRAY:
2736 data = _dbus_string_get_const_data_len (&iter->message->body,
2737 iter->array_type_pos, 1);
2740 _dbus_warn ("Appended element of wrong type for array\n");
2745 case DBUS_MESSAGE_ITER_TYPE_DICT:
2746 if (!iter->wrote_dict_key)
2748 _dbus_warn ("Appending dict data before key name\n");
2752 if (!_dbus_string_append_byte (&iter->message->body, type))
2758 _dbus_assert_not_reached ("Invalid iter type");
2766 dbus_message_iter_update_after_change (DBusMessageRealIter *iter)
2768 iter->changed_stamp = iter->message->changed_stamp;
2770 /* Set new end of iter */
2771 iter->end = _dbus_string_get_length (&iter->message->body);
2772 iter->pos = iter->end;
2774 /* Set container length */
2775 if (iter->type == DBUS_MESSAGE_ITER_TYPE_DICT ||
2776 (iter->type == DBUS_MESSAGE_ITER_TYPE_ARRAY && iter->array_type_done))
2777 _dbus_marshal_set_uint32 (&iter->message->body,
2778 iter->message->byte_order,
2779 iter->container_length_pos,
2780 iter->end - iter->container_start);
2782 if (iter->parent_iter)
2783 dbus_message_iter_update_after_change (iter->parent_iter);
2787 dbus_message_iter_append_done (DBusMessageRealIter *iter)
2789 iter->message->changed_stamp++;
2790 dbus_message_iter_update_after_change (iter);
2791 iter->wrote_dict_key = FALSE;
2795 * Appends a nil value to the message
2797 * @param iter an iterator pointing to the end of the message
2798 * @returns #TRUE on success
2801 dbus_message_iter_append_nil (DBusMessageIter *iter)
2803 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2805 dbus_message_iter_append_check (real);
2807 if (!dbus_message_iter_append_type (real, DBUS_TYPE_NIL))
2810 dbus_message_iter_append_done (real);
2816 * Appends a boolean value to the message
2818 * @param iter an iterator pointing to the end of the message
2819 * @param value the boolean value
2820 * @returns #TRUE on success
2823 dbus_message_iter_append_boolean (DBusMessageIter *iter,
2826 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2828 dbus_message_iter_append_check (real);
2830 if (!dbus_message_iter_append_type (real, DBUS_TYPE_BOOLEAN))
2833 if (!_dbus_string_append_byte (&real->message->body, (value != FALSE)))
2835 _dbus_string_set_length (&real->message->body, real->pos);
2839 dbus_message_iter_append_done (real);
2845 * Appends a byte to the message
2847 * @param iter an iterator pointing to the end of the message
2848 * @param value the byte value
2849 * @returns #TRUE on success
2852 dbus_message_iter_append_byte (DBusMessageIter *iter,
2853 unsigned char value)
2855 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2857 dbus_message_iter_append_check (real);
2859 if (!dbus_message_iter_append_type (real, DBUS_TYPE_BYTE))
2862 if (!_dbus_string_append_byte (&real->message->body, value))
2864 _dbus_string_set_length (&real->message->body, real->pos);
2868 dbus_message_iter_append_done (real);
2875 * Appends a 32 bit signed integer to the message.
2877 * @param iter an iterator pointing to the end of the message
2878 * @param value the integer value
2879 * @returns #TRUE on success
2882 dbus_message_iter_append_int32 (DBusMessageIter *iter,
2885 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2887 dbus_message_iter_append_check (real);
2889 if (!dbus_message_iter_append_type (real, DBUS_TYPE_INT32))
2892 if (!_dbus_marshal_int32 (&real->message->body, real->message->byte_order, value))
2894 _dbus_string_set_length (&real->message->body, real->pos);
2898 dbus_message_iter_append_done (real);
2904 * Appends a 32 bit unsigned integer to the message.
2906 * @param iter an iterator pointing to the end of the message
2907 * @param value the integer value
2908 * @returns #TRUE on success
2911 dbus_message_iter_append_uint32 (DBusMessageIter *iter,
2912 dbus_uint32_t value)
2914 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2916 dbus_message_iter_append_check (real);
2918 if (!dbus_message_iter_append_type (real, DBUS_TYPE_UINT32))
2921 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, value))
2923 _dbus_string_set_length (&real->message->body, real->pos);
2927 dbus_message_iter_append_done (real);
2932 #ifdef DBUS_HAVE_INT64
2935 * Appends a 64 bit signed integer to the message.
2937 * This function only exists if #DBUS_HAVE_INT64 is defined.
2939 * @param iter an iterator pointing to the end of the message
2940 * @param value the integer value
2941 * @returns #TRUE on success
2944 dbus_message_iter_append_int64 (DBusMessageIter *iter,
2947 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2949 dbus_message_iter_append_check (real);
2951 if (!dbus_message_iter_append_type (real, DBUS_TYPE_INT64))
2954 if (!_dbus_marshal_int64 (&real->message->body, real->message->byte_order, value))
2956 _dbus_string_set_length (&real->message->body, real->pos);
2960 dbus_message_iter_append_done (real);
2966 * Appends a 64 bit unsigned integer to the message.
2968 * This function only exists if #DBUS_HAVE_INT64 is defined.
2970 * @param iter an iterator pointing to the end of the message
2971 * @param value the integer value
2972 * @returns #TRUE on success
2975 dbus_message_iter_append_uint64 (DBusMessageIter *iter,
2976 dbus_uint64_t value)
2978 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
2980 dbus_message_iter_append_check (real);
2982 if (!dbus_message_iter_append_type (real, DBUS_TYPE_UINT64))
2985 if (!_dbus_marshal_uint64 (&real->message->body, real->message->byte_order, value))
2987 _dbus_string_set_length (&real->message->body, real->pos);
2991 dbus_message_iter_append_done (real);
2996 #endif /* DBUS_HAVE_INT64 */
2999 * Appends a double value to the message.
3001 * @param iter an iterator pointing to the end of the message
3002 * @param value the double value
3003 * @returns #TRUE on success
3006 dbus_message_iter_append_double (DBusMessageIter *iter,
3009 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3011 dbus_message_iter_append_check (real);
3013 if (!dbus_message_iter_append_type (real, DBUS_TYPE_DOUBLE))
3016 if (!_dbus_marshal_double (&real->message->body, real->message->byte_order, value))
3018 _dbus_string_set_length (&real->message->body, real->pos);
3022 dbus_message_iter_append_done (real);
3028 * Appends a UTF-8 string to the message.
3030 * @param iter an iterator pointing to the end of the message
3031 * @param value the string
3032 * @returns #TRUE on success
3035 dbus_message_iter_append_string (DBusMessageIter *iter,
3038 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3040 dbus_message_iter_append_check (real);
3042 if (!dbus_message_iter_append_type (real, DBUS_TYPE_STRING))
3045 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, value))
3047 _dbus_string_set_length (&real->message->body, real->pos);
3051 dbus_message_iter_append_done (real);
3057 * Appends a named type data chunk to the message. A named
3058 * type is simply an arbitrary UTF-8 string used as a type
3059 * tag, plus an array of arbitrary bytes to be interpreted
3060 * according to the type tag.
3062 * @param iter an iterator pointing to the end of the message
3063 * @param name the name of the type
3064 * @param data the binary data used to store the value
3065 * @param len the length of the binary data in bytes
3066 * @returns #TRUE on success
3069 dbus_message_iter_append_named (DBusMessageIter *iter,
3071 const unsigned char *data,
3074 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3076 dbus_message_iter_append_check (real);
3078 if (!dbus_message_iter_append_type (real, DBUS_TYPE_NAMED))
3081 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, name))
3083 _dbus_string_set_length (&real->message->body, real->pos);
3087 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, data, len))
3089 _dbus_string_set_length (&real->message->body, real->pos);
3093 dbus_message_iter_append_done (real);
3100 * Appends a dict key name to the message. The iterator used
3101 * must point to a dict.
3103 * @param iter an iterator pointing to the end of the message
3104 * @param value the string
3105 * @returns #TRUE on success
3108 dbus_message_iter_append_dict_key (DBusMessageIter *iter,
3111 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3113 dbus_message_iter_append_check (real);
3114 _dbus_assert (real->type == DBUS_MESSAGE_ITER_TYPE_DICT);
3116 if (real->wrote_dict_key)
3118 _dbus_warn ("Appendinging multiple dict key names\n");
3122 if (!_dbus_marshal_string (&real->message->body, real->message->byte_order, value))
3127 dbus_message_iter_append_done (real);
3128 real->wrote_dict_key = TRUE;
3134 array_iter_type_mark_done (DBusMessageRealIter *iter)
3138 if (iter->type == DBUS_MESSAGE_ITER_TYPE_ARRAY)
3139 array_iter_type_mark_done (iter->parent_iter);
3143 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&iter->message->body),
3144 sizeof (dbus_uint32_t));
3146 /* Empty length for now, backfill later */
3147 if (!_dbus_marshal_uint32 (&iter->message->body, iter->message->byte_order, 0))
3149 _dbus_string_set_length (&iter->message->body, iter->pos);
3153 iter->container_start = _dbus_string_get_length (&iter->message->body);
3154 iter->container_length_pos = len_pos;
3155 iter->array_type_done = TRUE;
3161 append_array_type (DBusMessageRealIter *real,
3163 dbus_bool_t *array_type_done,
3164 int *array_type_pos)
3166 int existing_element_type;
3168 if (!dbus_message_iter_append_type (real, DBUS_TYPE_ARRAY))
3171 if (real->type == DBUS_MESSAGE_ITER_TYPE_ARRAY &&
3172 real->array_type_done)
3174 existing_element_type = iter_get_array_type (real, array_type_pos);
3175 if (existing_element_type != element_type)
3177 _dbus_warn ("Appending array of %s, when expecting array of %s\n",
3178 _dbus_type_to_string (element_type),
3179 _dbus_type_to_string (existing_element_type));
3180 _dbus_string_set_length (&real->message->body, real->pos);
3183 if (array_type_done != NULL)
3184 *array_type_done = TRUE;
3188 if (array_type_pos != NULL)
3189 *array_type_pos = _dbus_string_get_length (&real->message->body);
3191 /* Append element type */
3192 if (!_dbus_string_append_byte (&real->message->body, element_type))
3194 _dbus_string_set_length (&real->message->body, real->pos);
3198 if (array_type_done != NULL)
3199 *array_type_done = element_type != DBUS_TYPE_ARRAY;
3201 if (element_type != DBUS_TYPE_ARRAY &&
3202 !array_iter_type_mark_done (real))
3210 * Appends an array to the message and initializes an iterator that
3211 * can be used to append to the array.
3213 * @param iter an iterator pointing to the end of the message
3214 * @param array_iter pointer to an iter that will be initialized
3215 * @param element_type the type of the array elements
3216 * @returns #TRUE on success
3219 dbus_message_iter_append_array (DBusMessageIter *iter,
3220 DBusMessageIter *array_iter,
3223 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3224 DBusMessageRealIter *array_real = (DBusMessageRealIter *)array_iter;
3227 dbus_bool_t array_type_done;
3229 if (element_type == DBUS_TYPE_NIL)
3231 _dbus_warn ("Can't create NIL arrays\n");
3235 dbus_message_iter_append_check (real);
3237 if (!append_array_type (real, element_type, &array_type_done, &array_type_pos))
3240 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&real->message->body), sizeof (dbus_uint32_t));
3242 if (array_type_done)
3244 /* Empty length for now, backfill later */
3245 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, 0))
3247 _dbus_string_set_length (&real->message->body, real->pos);
3252 array_real->parent_iter = real;
3253 array_real->message = real->message;
3254 array_real->changed_stamp = real->message->changed_stamp;
3256 array_real->type = DBUS_MESSAGE_ITER_TYPE_ARRAY;
3257 array_real->pos = _dbus_string_get_length (&real->message->body);
3258 array_real->end = array_real->end;
3260 array_real->container_start = array_real->pos;
3261 array_real->container_length_pos = len_pos;
3262 array_real->wrote_dict_key = 0;
3263 array_real->array_type_done = array_type_done;
3264 array_real->array_type_pos = array_type_pos;
3266 dbus_message_iter_append_done (array_real);
3272 * Appends a dict to the message and initializes an iterator that
3273 * can be used to append to the dict.
3275 * @param iter an iterator pointing to the end of the message
3276 * @param dict_iter pointer to an iter that will be initialized
3277 * @returns #TRUE on success
3280 dbus_message_iter_append_dict (DBusMessageIter *iter,
3281 DBusMessageIter *dict_iter)
3283 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3284 DBusMessageRealIter *dict_real = (DBusMessageRealIter *)dict_iter;
3287 dbus_message_iter_append_check (real);
3289 if (!dbus_message_iter_append_type (real, DBUS_TYPE_DICT))
3292 len_pos = _DBUS_ALIGN_VALUE (_dbus_string_get_length (&real->message->body), sizeof (dbus_uint32_t));
3294 /* Empty length for now, backfill later */
3295 if (!_dbus_marshal_uint32 (&real->message->body, real->message->byte_order, 0))
3297 _dbus_string_set_length (&real->message->body, real->pos);
3301 dict_real->parent_iter = real;
3302 dict_real->message = real->message;
3303 dict_real->changed_stamp = real->message->changed_stamp;
3305 dict_real->type = DBUS_MESSAGE_ITER_TYPE_DICT;
3306 dict_real->pos = _dbus_string_get_length (&real->message->body);
3307 dict_real->end = dict_real->end;
3309 dict_real->container_start = dict_real->pos;
3310 dict_real->container_length_pos = len_pos;
3311 dict_real->wrote_dict_key = 0;
3313 dbus_message_iter_append_done (dict_real);
3320 * Appends a boolean array to the message.
3322 * @param iter an iterator pointing to the end of the message
3323 * @param value the array
3324 * @param len the length of the array
3325 * @returns #TRUE on success
3328 dbus_message_iter_append_boolean_array (DBusMessageIter *iter,
3329 unsigned const char *value,
3332 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3334 dbus_message_iter_append_check (real);
3336 if (!append_array_type (real, DBUS_TYPE_BOOLEAN, NULL, NULL))
3339 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, value, len))
3341 _dbus_string_set_length (&real->message->body, real->pos);
3345 dbus_message_iter_append_done (real);
3351 * Appends a 32 bit signed integer array to the message.
3353 * @param iter an iterator pointing to the end of the message
3354 * @param value the array
3355 * @param len the length of the array
3356 * @returns #TRUE on success
3359 dbus_message_iter_append_int32_array (DBusMessageIter *iter,
3360 const dbus_int32_t *value,
3363 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3365 dbus_message_iter_append_check (real);
3367 if (!append_array_type (real, DBUS_TYPE_INT32, NULL, NULL))
3370 if (!_dbus_marshal_int32_array (&real->message->body, real->message->byte_order, value, len))
3372 _dbus_string_set_length (&real->message->body, real->pos);
3376 dbus_message_iter_append_done (real);
3382 * Appends a 32 bit unsigned integer array to the message.
3384 * @param iter an iterator pointing to the end of the message
3385 * @param value the array
3386 * @param len the length of the array
3387 * @returns #TRUE on success
3390 dbus_message_iter_append_uint32_array (DBusMessageIter *iter,
3391 const dbus_uint32_t *value,
3394 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3396 dbus_message_iter_append_check (real);
3398 if (!append_array_type (real, DBUS_TYPE_UINT32, NULL, NULL))
3401 if (!_dbus_marshal_uint32_array (&real->message->body, real->message->byte_order, value, len))
3403 _dbus_string_set_length (&real->message->body, real->pos);
3407 dbus_message_iter_append_done (real);
3412 #ifdef DBUS_HAVE_INT64
3415 * Appends a 64 bit signed integer array to the message.
3417 * This function only exists if #DBUS_HAVE_INT64 is defined.
3419 * @param iter an iterator pointing to the end of the message
3420 * @param value the array
3421 * @param len the length of the array
3422 * @returns #TRUE on success
3425 dbus_message_iter_append_int64_array (DBusMessageIter *iter,
3426 const dbus_int64_t *value,
3429 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3431 dbus_message_iter_append_check (real);
3433 if (!append_array_type (real, DBUS_TYPE_INT64, NULL, NULL))
3436 if (!_dbus_marshal_int64_array (&real->message->body, real->message->byte_order, value, len))
3438 _dbus_string_set_length (&real->message->body, real->pos);
3442 dbus_message_iter_append_done (real);
3448 * Appends a 64 bit unsigned integer array to the message.
3450 * This function only exists if #DBUS_HAVE_INT64 is defined.
3452 * @param iter an iterator pointing to the end of the message
3453 * @param value the array
3454 * @param len the length of the array
3455 * @returns #TRUE on success
3458 dbus_message_iter_append_uint64_array (DBusMessageIter *iter,
3459 const dbus_uint64_t *value,
3462 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3464 dbus_message_iter_append_check (real);
3466 if (!append_array_type (real, DBUS_TYPE_UINT64, NULL, NULL))
3469 if (!_dbus_marshal_uint64_array (&real->message->body, real->message->byte_order, value, len))
3471 _dbus_string_set_length (&real->message->body, real->pos);
3475 dbus_message_iter_append_done (real);
3479 #endif /* DBUS_HAVE_INT64 */
3482 * Appends a double array to the message.
3484 * @param iter an iterator pointing to the end of the message
3485 * @param value the array
3486 * @param len the length of the array
3487 * @returns #TRUE on success
3490 dbus_message_iter_append_double_array (DBusMessageIter *iter,
3491 const double *value,
3494 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3496 dbus_message_iter_append_check (real);
3498 if (!append_array_type (real, DBUS_TYPE_DOUBLE, NULL, NULL))
3501 if (!_dbus_marshal_double_array (&real->message->body, real->message->byte_order, value, len))
3503 _dbus_string_set_length (&real->message->body, real->pos);
3507 dbus_message_iter_append_done (real);
3513 * Appends a byte array to the message.
3515 * @param iter an iterator pointing to the end of the message
3516 * @param value the array
3517 * @param len the length of the array
3518 * @returns #TRUE on success
3521 dbus_message_iter_append_byte_array (DBusMessageIter *iter,
3522 unsigned const char *value,
3525 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3527 dbus_message_iter_append_check (real);
3529 if (!append_array_type (real, DBUS_TYPE_BYTE, NULL, NULL))
3532 if (!_dbus_marshal_byte_array (&real->message->body, real->message->byte_order, value, len))
3534 _dbus_string_set_length (&real->message->body, real->pos);
3538 dbus_message_iter_append_done (real);
3544 * Appends a string array to the message.
3546 * @param iter an iterator pointing to the end of the message
3547 * @param value the array
3548 * @param len the length of the array
3549 * @returns #TRUE on success
3552 dbus_message_iter_append_string_array (DBusMessageIter *iter,
3556 DBusMessageRealIter *real = (DBusMessageRealIter *)iter;
3558 dbus_message_iter_append_check (real);
3560 if (!append_array_type (real, DBUS_TYPE_STRING, NULL, NULL))
3563 if (!_dbus_marshal_string_array (&real->message->body, real->message->byte_order, value, len))
3565 _dbus_string_set_length (&real->message->body, real->pos);
3569 dbus_message_iter_append_done (real);
3575 * Sets the message sender.
3577 * @param message the message
3578 * @param sender the sender
3579 * @returns #FALSE if not enough memory
3582 dbus_message_set_sender (DBusMessage *message,
3585 _dbus_assert (!message->locked);
3589 delete_string_field (message, FIELD_SENDER);
3594 return set_string_field (message,
3601 * Sets a flag indicating that the message is an error reply
3602 * message, i.e. an "exception" rather than a normal response.
3604 * @param message the message
3605 * @param is_error_reply #TRUE if this is an error message.
3608 dbus_message_set_is_error (DBusMessage *message,
3609 dbus_bool_t is_error_reply)
3613 _dbus_assert (!message->locked);
3615 header = _dbus_string_get_data_len (&message->header, 1, 1);
3618 *header |= DBUS_HEADER_FLAG_ERROR;
3620 *header &= ~DBUS_HEADER_FLAG_ERROR;
3624 * Returns #TRUE if the message is an error
3625 * reply to some previous message we sent.
3627 * @param message the message
3628 * @returns #TRUE if the message is an error
3631 dbus_message_get_is_error (DBusMessage *message)
3635 header = _dbus_string_get_const_data_len (&message->header, 1, 1);
3637 return (*header & DBUS_HEADER_FLAG_ERROR) != 0;
3641 * Gets the service which originated this message,
3642 * or #NULL if unknown or inapplicable.
3644 * @param message the message
3645 * @returns the service name or #NULL
3648 dbus_message_get_sender (DBusMessage *message)
3650 return get_string_field (message, FIELD_SENDER, NULL);
3654 * Checks whether the message has the given name.
3655 * If the message has no name or has a different
3656 * name, returns #FALSE.
3658 * @param message the message
3659 * @param name the name to check (must not be #NULL)
3661 * @returns #TRUE if the message has the given name
3664 dbus_message_name_is (DBusMessage *message,
3669 _dbus_assert (name != NULL);
3671 n = dbus_message_get_name (message);
3673 if (n && strcmp (n, name) == 0)
3680 * Checks whether the message was sent to the given service. If the
3681 * message has no service specified or has a different name, returns
3684 * @param message the message
3685 * @param service the service to check (must not be #NULL)
3687 * @returns #TRUE if the message has the given destination service
3690 dbus_message_service_is (DBusMessage *message,
3691 const char *service)
3695 _dbus_assert (service != NULL);
3697 s = dbus_message_get_service (message);
3699 if (s && strcmp (s, service) == 0)
3706 * Checks whether the message has the given service as its sender. If
3707 * the message has no sender specified or has a different sender,
3708 * returns #FALSE. Note that if a peer application owns multiple
3709 * services, its messages will have only one of those services as the
3710 * sender (usually the base service). So you can't use this
3711 * function to prove the sender didn't own service Foo, you can
3712 * only use it to prove that it did.
3714 * @param message the message
3715 * @param service the service to check (must not be #NULL)
3717 * @returns #TRUE if the message has the given origin service
3720 dbus_message_sender_is (DBusMessage *message,
3721 const char *service)
3725 _dbus_assert (service != NULL);
3727 s = dbus_message_get_sender (message);
3729 if (s && strcmp (s, service) == 0)
3736 * Sets a #DBusError based on the contents of the given
3737 * message. The error is only set if the message
3738 * is an error message, as in dbus_message_get_is_error().
3739 * The name of the error is set to the name of the message,
3740 * and the error message is set to the first argument
3741 * if the argument exists and is a string.
3743 * The return value indicates whether the error was set (the error is
3744 * set if and only if the message is an error message).
3745 * So you can check for an error reply and convert it to DBusError
3748 * @param error the error to set
3749 * @param message the message to set it from
3750 * @returns #TRUE if dbus_message_get_is_error() returns #TRUE for the message
3753 dbus_set_error_from_message (DBusError *error,
3754 DBusMessage *message)
3758 if (!dbus_message_get_is_error (message))
3762 dbus_message_get_args (message, NULL,
3763 DBUS_TYPE_STRING, &str,
3766 dbus_set_error (error, dbus_message_get_name (message),
3767 str ? "%s" : NULL, str);
3777 * @addtogroup DBusMessageInternals
3782 * @typedef DBusMessageLoader
3784 * The DBusMessageLoader object encapsulates the process of converting
3785 * a byte stream into a series of DBusMessage. It buffers the incoming
3786 * bytes as efficiently as possible, and generates a queue of
3787 * messages. DBusMessageLoader is typically used as part of a
3788 * DBusTransport implementation. The DBusTransport then hands off
3789 * the loaded messages to a DBusConnection, making the messages
3790 * visible to the application.
3792 * @todo write tests for break-loader that a) randomly delete header
3793 * fields and b) set string fields to zero-length and other funky
3798 /* we definitely use signed ints for sizes, so don't exceed
3799 * _DBUS_INT_MAX; and add 16 for paranoia, since a message
3800 * over 128M is pretty nuts anyhow.
3804 * The maximum sane message size.
3806 #define MAX_SANE_MESSAGE_SIZE (_DBUS_INT_MAX/16)
3809 * Implementation details of DBusMessageLoader.
3810 * All members are private.
3812 struct DBusMessageLoader
3814 int refcount; /**< Reference count. */
3816 DBusString data; /**< Buffered data */
3818 DBusList *messages; /**< Complete messages. */
3820 long max_message_size; /**< Maximum size of a message */
3822 unsigned int buffer_outstanding : 1; /**< Someone is using the buffer to read */
3824 unsigned int corrupted : 1; /**< We got broken data, and are no longer working */
3828 * The initial buffer size of the message loader.
3830 * @todo this should be based on min header size plus some average
3831 * body size, or something. Or rather, the min header size only, if we
3832 * want to try to read only the header, store that in a DBusMessage,
3833 * then read only the body and store that, etc., depends on
3834 * how we optimize _dbus_message_loader_get_buffer() and what
3835 * the exact message format is.
3837 #define INITIAL_LOADER_DATA_LEN 32
3840 * Creates a new message loader. Returns #NULL if memory can't
3843 * @returns new loader, or #NULL.
3846 _dbus_message_loader_new (void)
3848 DBusMessageLoader *loader;
3850 loader = dbus_new0 (DBusMessageLoader, 1);
3854 loader->refcount = 1;
3856 /* Try to cap message size at something that won't *totally* hose
3857 * the system if we have a couple of them.
3859 loader->max_message_size = _DBUS_ONE_MEGABYTE * 32;
3861 if (!_dbus_string_init (&loader->data))
3867 /* preallocate the buffer for speed, ignore failure */
3868 _dbus_string_set_length (&loader->data, INITIAL_LOADER_DATA_LEN);
3869 _dbus_string_set_length (&loader->data, 0);
3875 * Increments the reference count of the loader.
3877 * @param loader the loader.
3880 _dbus_message_loader_ref (DBusMessageLoader *loader)
3882 loader->refcount += 1;
3886 * Decrements the reference count of the loader and finalizes the
3887 * loader when the count reaches zero.
3889 * @param loader the loader.
3892 _dbus_message_loader_unref (DBusMessageLoader *loader)
3894 loader->refcount -= 1;
3895 if (loader->refcount == 0)
3897 _dbus_list_foreach (&loader->messages,
3898 (DBusForeachFunction) dbus_message_unref,
3900 _dbus_list_clear (&loader->messages);
3901 _dbus_string_free (&loader->data);
3907 * Gets the buffer to use for reading data from the network. Network
3908 * data is read directly into an allocated buffer, which is then used
3909 * in the DBusMessage, to avoid as many extra memcpy's as possible.
3910 * The buffer must always be returned immediately using
3911 * _dbus_message_loader_return_buffer(), even if no bytes are
3912 * successfully read.
3914 * @todo this function can be a lot more clever. For example
3915 * it can probably always return a buffer size to read exactly
3916 * the body of the next message, thus avoiding any memory wastage
3919 * @todo we need to enforce a max length on strings in header fields.
3921 * @param loader the message loader.
3922 * @param buffer the buffer
3925 _dbus_message_loader_get_buffer (DBusMessageLoader *loader,
3926 DBusString **buffer)
3928 _dbus_assert (!loader->buffer_outstanding);
3930 *buffer = &loader->data;
3932 loader->buffer_outstanding = TRUE;
3936 * The smallest header size that can occur.
3937 * (It won't be valid)
3939 #define DBUS_MINIMUM_HEADER_SIZE 16
3941 /** Pack four characters as in "abcd" into a uint32 */
3942 #define FOUR_CHARS_TO_UINT32(a, b, c, d) \
3943 ((((dbus_uint32_t)a) << 24) | \
3944 (((dbus_uint32_t)b) << 16) | \
3945 (((dbus_uint32_t)c) << 8) | \
3948 /** DBUS_HEADER_FIELD_NAME packed into a dbus_uint32_t */
3949 #define DBUS_HEADER_FIELD_NAME_AS_UINT32 \
3950 FOUR_CHARS_TO_UINT32 ('n', 'a', 'm', 'e')
3952 /** DBUS_HEADER_FIELD_SERVICE packed into a dbus_uint32_t */
3953 #define DBUS_HEADER_FIELD_SERVICE_AS_UINT32 \
3954 FOUR_CHARS_TO_UINT32 ('s', 'r', 'v', 'c')
3956 /** DBUS_HEADER_FIELD_REPLY packed into a dbus_uint32_t */
3957 #define DBUS_HEADER_FIELD_REPLY_AS_UINT32 \
3958 FOUR_CHARS_TO_UINT32 ('r', 'p', 'l', 'y')
3960 /** DBUS_HEADER_FIELD_SENDER Packed into a dbus_uint32_t */
3961 #define DBUS_HEADER_FIELD_SENDER_AS_UINT32 \
3962 FOUR_CHARS_TO_UINT32 ('s', 'n', 'd', 'r')
3965 decode_string_field (const DBusString *data,
3966 HeaderField fields[FIELD_LAST],
3970 const char *field_name)
3973 int string_data_pos;
3975 if (fields[field].offset >= 0)
3977 _dbus_verbose ("%s field provided twice\n",
3982 if (type != DBUS_TYPE_STRING)
3984 _dbus_verbose ("%s field has wrong type %s\n",
3985 field_name, _dbus_type_to_string (type));
3989 /* skip padding after typecode, skip string length;
3990 * we assume that the string arg has already been validated
3991 * for sanity and UTF-8
3993 string_data_pos = _DBUS_ALIGN_VALUE (pos, 4) + 4;
3994 _dbus_assert (string_data_pos < _dbus_string_get_length (data));
3996 _dbus_string_init_const (&tmp,
3997 _dbus_string_get_const_data (data) + string_data_pos);
3999 if (field == FIELD_NAME)
4001 if (!_dbus_string_validate_name (&tmp, 0, _dbus_string_get_length (&tmp)))
4003 _dbus_verbose ("%s field has invalid content \"%s\"\n",
4004 field_name, _dbus_string_get_const_data (&tmp));
4008 if (_dbus_string_starts_with_c_str (&tmp,
4009 DBUS_NAMESPACE_LOCAL_MESSAGE))
4011 _dbus_verbose ("Message is in the local namespace\n");
4017 if (!_dbus_string_validate_service (&tmp, 0, _dbus_string_get_length (&tmp)))
4019 _dbus_verbose ("%s field has invalid content \"%s\"\n",
4020 field_name, _dbus_string_get_const_data (&tmp));
4025 fields[field].offset = _DBUS_ALIGN_VALUE (pos, 4);
4028 _dbus_verbose ("Found field %s name at offset %d\n",
4029 field_name, fields[field].offset);
4036 decode_header_data (const DBusString *data,
4039 HeaderField fields[FIELD_LAST],
4040 int *message_padding)
4047 if (header_len < 16)
4051 while (i < FIELD_LAST)
4053 fields[i].offset = -1;
4057 fields[FIELD_HEADER_LENGTH].offset = 4;
4058 fields[FIELD_BODY_LENGTH].offset = 8;
4059 fields[FIELD_CLIENT_SERIAL].offset = 12;
4061 /* Now handle the named fields. A real named field is at least 4
4062 * bytes for the name, plus a type code (1 byte) plus padding. So
4063 * if we have less than 8 bytes left, it must be alignment padding,
4064 * not a field. While >= 8 bytes can't be entirely alignment
4068 while ((pos + 7) < header_len)
4070 pos = _DBUS_ALIGN_VALUE (pos, 4);
4072 if ((pos + 4) > header_len)
4075 field =_dbus_string_get_const_data_len (data, pos, 4);
4078 _dbus_assert (_DBUS_ALIGN_ADDRESS (field, 4) == field);
4080 if (!_dbus_marshal_validate_type (data, pos, &type, &pos))
4082 _dbus_verbose ("Failed to validate type of named header field\n");
4086 if (!_dbus_marshal_validate_arg (data, byte_order, 0, type, -1, pos, &new_pos))
4088 _dbus_verbose ("Failed to validate argument to named header field\n");
4092 if (new_pos > header_len)
4094 _dbus_verbose ("Named header field tries to extend beyond header length\n");
4098 switch (DBUS_UINT32_FROM_BE (*(int*)field))
4100 case DBUS_HEADER_FIELD_SERVICE_AS_UINT32:
4101 if (!decode_string_field (data, fields, pos, type,
4103 DBUS_HEADER_FIELD_SERVICE))
4107 case DBUS_HEADER_FIELD_NAME_AS_UINT32:
4108 if (!decode_string_field (data, fields, pos, type,
4110 DBUS_HEADER_FIELD_NAME))
4114 case DBUS_HEADER_FIELD_SENDER_AS_UINT32:
4115 if (!decode_string_field (data, fields, pos, type,
4117 DBUS_HEADER_FIELD_SENDER))
4121 case DBUS_HEADER_FIELD_REPLY_AS_UINT32:
4122 if (fields[FIELD_REPLY_SERIAL].offset >= 0)
4124 _dbus_verbose ("%s field provided twice\n",
4125 DBUS_HEADER_FIELD_REPLY);
4129 if (type != DBUS_TYPE_UINT32)
4131 _dbus_verbose ("%s field has wrong type\n", DBUS_HEADER_FIELD_REPLY);
4135 fields[FIELD_REPLY_SERIAL].offset = _DBUS_ALIGN_VALUE (pos, 4);
4137 _dbus_verbose ("Found reply serial at offset %d\n",
4138 fields[FIELD_REPLY_SERIAL].offset);
4142 _dbus_verbose ("Ignoring an unknown header field: %c%c%c%c at offset %d\n",
4143 field[0], field[1], field[2], field[3], pos);
4149 if (pos < header_len)
4151 /* Alignment padding, verify that it's nul */
4152 _dbus_assert ((header_len - pos) < 8);
4154 if (!_dbus_string_validate_nul (data,
4155 pos, (header_len - pos)))
4157 _dbus_verbose ("header alignment padding is not nul\n");
4162 /* Name field is mandatory */
4163 if (fields[FIELD_NAME].offset < 0)
4165 _dbus_verbose ("No %s field provided\n",
4166 DBUS_HEADER_FIELD_NAME);
4170 if (message_padding)
4171 *message_padding = header_len - pos;
4177 * Returns a buffer obtained from _dbus_message_loader_get_buffer(),
4178 * indicating to the loader how many bytes of the buffer were filled
4179 * in. This function must always be called, even if no bytes were
4180 * successfully read.
4182 * @param loader the loader.
4183 * @param buffer the buffer.
4184 * @param bytes_read number of bytes that were read into the buffer.
4187 _dbus_message_loader_return_buffer (DBusMessageLoader *loader,
4191 _dbus_assert (loader->buffer_outstanding);
4192 _dbus_assert (buffer == &loader->data);
4194 loader->buffer_outstanding = FALSE;
4198 * Converts buffered data into messages.
4200 * @param loader the loader.
4201 * @returns #TRUE if we had enough memory to finish.
4204 _dbus_message_loader_queue_messages (DBusMessageLoader *loader)
4206 if (loader->corrupted)
4209 while (_dbus_string_get_length (&loader->data) >= 16)
4211 DBusMessage *message;
4212 const char *header_data;
4213 int byte_order, header_len, body_len, header_padding;
4214 dbus_uint32_t header_len_unsigned, body_len_unsigned;
4216 header_data = _dbus_string_get_const_data_len (&loader->data, 0, 16);
4218 _dbus_assert (_DBUS_ALIGN_ADDRESS (header_data, 4) == header_data);
4220 if (header_data[2] != DBUS_MAJOR_PROTOCOL_VERSION)
4222 _dbus_verbose ("Message has protocol version %d ours is %d\n",
4223 (int) header_data[2], DBUS_MAJOR_PROTOCOL_VERSION);
4224 loader->corrupted = TRUE;
4228 byte_order = header_data[0];
4230 if (byte_order != DBUS_LITTLE_ENDIAN &&
4231 byte_order != DBUS_BIG_ENDIAN)
4233 _dbus_verbose ("Message with bad byte order '%c' received\n",
4235 loader->corrupted = TRUE;
4239 header_len_unsigned = _dbus_unpack_uint32 (byte_order, header_data + 4);
4240 body_len_unsigned = _dbus_unpack_uint32 (byte_order, header_data + 8);
4242 if (header_len_unsigned < 16)
4244 _dbus_verbose ("Message had broken too-small header length %u\n",
4245 header_len_unsigned);
4246 loader->corrupted = TRUE;
4250 if (header_len_unsigned > (unsigned) MAX_SANE_MESSAGE_SIZE ||
4251 body_len_unsigned > (unsigned) MAX_SANE_MESSAGE_SIZE)
4253 _dbus_verbose ("Header or body length too large (%u %u)\n",
4254 header_len_unsigned,
4256 loader->corrupted = TRUE;
4260 /* Now that we know the values are in signed range, get
4261 * rid of stupid unsigned, just causes bugs
4263 header_len = header_len_unsigned;
4264 body_len = body_len_unsigned;
4266 if (_DBUS_ALIGN_VALUE (header_len, 8) != header_len_unsigned)
4269 _dbus_verbose ("header length %d is not aligned to 8 bytes\n",
4271 loader->corrupted = TRUE;
4275 if (header_len + body_len > loader->max_message_size)
4277 _dbus_verbose ("Message claimed length header = %d body = %d exceeds max message length %ld\n",
4278 header_len, body_len, loader->max_message_size);
4279 loader->corrupted = TRUE;
4283 if (_dbus_string_get_length (&loader->data) >= (header_len + body_len))
4285 HeaderField fields[FIELD_LAST];
4290 _dbus_verbose_bytes_of_string (&loader->data, 0, header_len + body_len);
4292 if (!decode_header_data (&loader->data, header_len, byte_order,
4293 fields, &header_padding))
4295 _dbus_verbose ("Header was invalid\n");
4296 loader->corrupted = TRUE;
4300 next_arg = header_len;
4301 while (next_arg < (header_len + body_len))
4304 int prev = next_arg;
4306 if (!_dbus_marshal_validate_type (&loader->data, next_arg,
4309 _dbus_verbose ("invalid typecode at offset %d\n", prev);
4310 loader->corrupted = TRUE;
4314 if (!_dbus_marshal_validate_arg (&loader->data,
4321 _dbus_verbose ("invalid type data at %d, next_arg\n", next_arg);
4322 loader->corrupted = TRUE;
4326 _dbus_assert (next_arg > prev);
4329 if (next_arg > (header_len + body_len))
4331 _dbus_verbose ("end of last arg at %d but message has len %d+%d=%d\n",
4332 next_arg, header_len, body_len,
4333 header_len + body_len);
4334 loader->corrupted = TRUE;
4338 message = dbus_message_new_empty_header ();
4339 if (message == NULL)
4341 _dbus_verbose ("Failed to allocate empty message\n");
4345 message->byte_order = byte_order;
4346 message->header_padding = header_padding;
4348 /* Copy in the offsets we found */
4350 while (i < FIELD_LAST)
4352 message->header_fields[i] = fields[i];
4356 if (!_dbus_list_append (&loader->messages, message))
4358 _dbus_verbose ("Failed to append new message to loader queue\n");
4359 dbus_message_unref (message);
4363 _dbus_assert (_dbus_string_get_length (&message->header) == 0);
4364 _dbus_assert (_dbus_string_get_length (&message->body) == 0);
4366 _dbus_assert (_dbus_string_get_length (&loader->data) >=
4367 (header_len + body_len));
4369 if (!_dbus_string_move_len (&loader->data, 0, header_len, &message->header, 0))
4371 _dbus_verbose ("Failed to move header into new message\n");
4372 _dbus_list_remove_last (&loader->messages, message);
4373 dbus_message_unref (message);
4377 if (!_dbus_string_move_len (&loader->data, 0, body_len, &message->body, 0))
4381 _dbus_verbose ("Failed to move body into new message\n");
4383 /* put the header back, we'll try again later */
4384 result = _dbus_string_copy_len (&message->header, 0, header_len,
4386 _dbus_assert (result); /* because DBusString never reallocs smaller */
4388 _dbus_list_remove_last (&loader->messages, message);
4389 dbus_message_unref (message);
4393 _dbus_assert (_dbus_string_get_length (&message->header) == header_len);
4394 _dbus_assert (_dbus_string_get_length (&message->body) == body_len);
4396 /* Fill in caches */
4397 /* FIXME there's no type check if the field has the wrong type */
4398 message->reply_serial = get_uint_field (message,
4399 FIELD_REPLY_SERIAL);
4400 message->client_serial = get_uint_field (message,
4401 FIELD_CLIENT_SERIAL);
4403 _dbus_verbose ("Loaded message %p\n", message);
4413 * Peeks at first loaded message, returns #NULL if no messages have
4416 * @param loader the loader.
4417 * @returns the next message, or #NULL if none.
4420 _dbus_message_loader_peek_message (DBusMessageLoader *loader)
4422 if (loader->messages)
4423 return loader->messages->data;
4429 * Pops a loaded message (passing ownership of the message
4430 * to the caller). Returns #NULL if no messages have been
4433 * @param loader the loader.
4434 * @returns the next message, or #NULL if none.
4437 _dbus_message_loader_pop_message (DBusMessageLoader *loader)
4439 return _dbus_list_pop_first (&loader->messages);
4443 * Pops a loaded message inside a list link (passing ownership of the
4444 * message and link to the caller). Returns #NULL if no messages have
4447 * @param loader the loader.
4448 * @returns the next message link, or #NULL if none.
4451 _dbus_message_loader_pop_message_link (DBusMessageLoader *loader)
4453 return _dbus_list_pop_first_link (&loader->messages);
4457 * Returns a popped message link, used to undo a pop.
4459 * @param loader the loader
4460 * @param link the link with a message in it
4463 _dbus_message_loader_putback_message_link (DBusMessageLoader *loader,
4466 _dbus_list_prepend_link (&loader->messages, link);
4470 * Checks whether the loader is confused due to bad data.
4471 * If messages are received that are invalid, the
4472 * loader gets confused and gives up permanently.
4473 * This state is called "corrupted."
4475 * @param loader the loader
4476 * @returns #TRUE if the loader is hosed.
4479 _dbus_message_loader_get_is_corrupted (DBusMessageLoader *loader)
4481 return loader->corrupted;
4485 * Sets the maximum size message we allow.
4487 * @param loader the loader
4488 * @param size the max message size in bytes
4491 _dbus_message_loader_set_max_message_size (DBusMessageLoader *loader,
4494 if (size > MAX_SANE_MESSAGE_SIZE)
4496 _dbus_verbose ("clamping requested max message size %ld to %d\n",
4497 size, MAX_SANE_MESSAGE_SIZE);
4498 size = MAX_SANE_MESSAGE_SIZE;
4500 loader->max_message_size = size;
4504 * Gets the maximum allowed message size in bytes.
4506 * @param loader the loader
4507 * @returns max size in bytes
4510 _dbus_message_loader_get_max_message_size (DBusMessageLoader *loader)
4512 return loader->max_message_size;
4516 #ifdef DBUS_BUILD_TESTS
4517 #include "dbus-test.h"
4521 message_iter_test (DBusMessage *message)
4523 DBusMessageIter iter, dict, array, array2;
4525 unsigned char *data;
4526 dbus_int32_t *our_int_array;
4529 dbus_message_iter_init (message, &iter);
4532 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_STRING)
4533 _dbus_assert_not_reached ("Argument type isn't string");
4535 str = dbus_message_iter_get_string (&iter);
4536 if (strcmp (str, "Test string") != 0)
4537 _dbus_assert_not_reached ("Strings differ");
4540 if (!dbus_message_iter_next (&iter))
4541 _dbus_assert_not_reached ("Reached end of arguments");
4543 /* Signed integer tests */
4544 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_INT32)
4545 _dbus_assert_not_reached ("Argument type isn't int32");
4547 if (dbus_message_iter_get_int32 (&iter) != -0x12345678)
4548 _dbus_assert_not_reached ("Signed integers differ");
4550 if (!dbus_message_iter_next (&iter))
4551 _dbus_assert_not_reached ("Reached end of fields");
4553 /* Unsigned integer tests */
4554 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_UINT32)
4555 _dbus_assert_not_reached ("Argument type isn't int32");
4557 if (dbus_message_iter_get_uint32 (&iter) != 0xedd1e)
4558 _dbus_assert_not_reached ("Unsigned integers differ");
4560 if (!dbus_message_iter_next (&iter))
4561 _dbus_assert_not_reached ("Reached end of arguments");
4564 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DOUBLE)
4565 _dbus_assert_not_reached ("Argument type isn't double");
4567 if (dbus_message_iter_get_double (&iter) != 3.14159)
4568 _dbus_assert_not_reached ("Doubles differ");
4570 if (!dbus_message_iter_next (&iter))
4571 _dbus_assert_not_reached ("Reached end of arguments");
4573 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_ARRAY)
4574 _dbus_assert_not_reached ("Argument type not an array");
4576 if (dbus_message_iter_get_array_type (&iter) != DBUS_TYPE_DOUBLE)
4577 _dbus_assert_not_reached ("Array type not double");
4580 if (!dbus_message_iter_init_array_iterator (&iter, &array, NULL))
4581 _dbus_assert_not_reached ("Array init failed");
4583 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_DOUBLE)
4584 _dbus_assert_not_reached ("Argument type isn't double");
4586 if (dbus_message_iter_get_double (&array) != 1.5)
4587 _dbus_assert_not_reached ("Unsigned integers differ");
4589 if (!dbus_message_iter_next (&array))
4590 _dbus_assert_not_reached ("Reached end of arguments");
4592 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_DOUBLE)
4593 _dbus_assert_not_reached ("Argument type isn't double");
4595 if (dbus_message_iter_get_double (&array) != 2.5)
4596 _dbus_assert_not_reached ("Unsigned integers differ");
4598 if (dbus_message_iter_next (&array))
4599 _dbus_assert_not_reached ("Didn't reach end of arguments");
4601 if (!dbus_message_iter_next (&iter))
4602 _dbus_assert_not_reached ("Reached end of arguments");
4607 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DICT)
4608 _dbus_assert_not_reached ("not dict type");
4610 if (!dbus_message_iter_init_dict_iterator (&iter, &dict))
4611 _dbus_assert_not_reached ("dict iter failed");
4613 str = dbus_message_iter_get_dict_key (&dict);
4614 if (str == NULL || strcmp (str, "test") != 0)
4615 _dbus_assert_not_reached ("wrong dict key");
4618 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_UINT32)
4619 _dbus_assert_not_reached ("wrong dict entry type");
4621 if (dbus_message_iter_get_uint32 (&dict) != 0xDEADBEEF)
4622 _dbus_assert_not_reached ("wrong dict entry value");
4624 if (!dbus_message_iter_next (&dict))
4625 _dbus_assert_not_reached ("reached end of dict");
4627 /* array of array of int32 (in dict) */
4629 str = dbus_message_iter_get_dict_key (&dict);
4630 if (str == NULL || strcmp (str, "array") != 0)
4631 _dbus_assert_not_reached ("wrong dict key");
4634 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_ARRAY)
4635 _dbus_assert_not_reached ("Argument type not an array");
4637 if (dbus_message_iter_get_array_type (&dict) != DBUS_TYPE_ARRAY)
4638 _dbus_assert_not_reached ("Array type not array");
4640 if (!dbus_message_iter_init_array_iterator (&dict, &array, NULL))
4641 _dbus_assert_not_reached ("Array init failed");
4643 if (dbus_message_iter_get_arg_type (&array) != DBUS_TYPE_ARRAY)
4644 _dbus_assert_not_reached ("Argument type isn't array");
4646 if (dbus_message_iter_get_array_type (&array) != DBUS_TYPE_INT32)
4647 _dbus_assert_not_reached ("Array type not int32");
4649 if (!dbus_message_iter_init_array_iterator (&array, &array2, NULL))
4650 _dbus_assert_not_reached ("Array init failed");
4652 if (dbus_message_iter_get_arg_type (&array2) != DBUS_TYPE_INT32)
4653 _dbus_assert_not_reached ("Argument type isn't int32");
4655 if (dbus_message_iter_get_int32 (&array2) != 0x12345678)
4656 _dbus_assert_not_reached ("Signed integers differ");
4658 if (!dbus_message_iter_next (&array2))
4659 _dbus_assert_not_reached ("Reached end of arguments");
4661 if (dbus_message_iter_get_int32 (&array2) != 0x23456781)
4662 _dbus_assert_not_reached ("Signed integers differ");
4664 if (dbus_message_iter_next (&array2))
4665 _dbus_assert_not_reached ("Didn't reached end of arguments");
4667 if (!dbus_message_iter_next (&array))
4668 _dbus_assert_not_reached ("Reached end of arguments");
4670 if (dbus_message_iter_get_array_type (&array) != DBUS_TYPE_INT32)
4671 _dbus_assert_not_reached ("Array type not int32");
4673 if (!dbus_message_iter_get_int32_array (&array,
4676 _dbus_assert_not_reached ("couldn't get int32 array");
4678 _dbus_assert (len == 3);
4679 _dbus_assert (our_int_array[0] == 0x34567812 &&
4680 our_int_array[1] == 0x45678123 &&
4681 our_int_array[2] == 0x56781234);
4682 dbus_free (our_int_array);
4684 if (dbus_message_iter_next (&array))
4685 _dbus_assert_not_reached ("Didn't reach end of array");
4687 if (dbus_message_iter_next (&dict))
4688 _dbus_assert_not_reached ("Didn't reach end of dict");
4690 if (!dbus_message_iter_next (&iter))
4691 _dbus_assert_not_reached ("Reached end of arguments");
4693 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_BYTE)
4695 _dbus_warn ("type was: %d\n", dbus_message_iter_get_arg_type (&iter));
4696 _dbus_assert_not_reached ("wrong type after dict (should be byte)");
4699 if (dbus_message_iter_get_byte (&iter) != 0xF0)
4700 _dbus_assert_not_reached ("wrong value after dict");
4703 if (!dbus_message_iter_next (&iter))
4704 _dbus_assert_not_reached ("Reached end of arguments");
4706 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_NIL)
4707 _dbus_assert_not_reached ("not a nil type");
4709 if (!dbus_message_iter_next (&iter))
4710 _dbus_assert_not_reached ("Reached end of arguments");
4712 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_NAMED)
4713 _dbus_assert_not_reached ("wrong type after dict");
4715 if (!dbus_message_iter_get_named (&iter, &str, &data, &len))
4716 _dbus_assert_not_reached ("failed to get named");
4718 _dbus_assert (strcmp (str, "named")==0);
4719 _dbus_assert (len == 5);
4720 _dbus_assert (strcmp (data, "data")==0);
4724 if (dbus_message_iter_next (&iter))
4725 _dbus_assert_not_reached ("Didn't reach end of arguments");
4730 check_message_handling_type (DBusMessageIter *iter,
4733 DBusMessageIter child_iter;
4739 case DBUS_TYPE_BYTE:
4740 dbus_message_iter_get_byte (iter);
4742 case DBUS_TYPE_BOOLEAN:
4743 dbus_message_iter_get_boolean (iter);
4745 case DBUS_TYPE_INT32:
4746 dbus_message_iter_get_int32 (iter);
4748 case DBUS_TYPE_UINT32:
4749 dbus_message_iter_get_uint32 (iter);
4751 case DBUS_TYPE_INT64:
4752 #ifdef DBUS_HAVE_INT64
4753 dbus_message_iter_get_int64 (iter);
4756 case DBUS_TYPE_UINT64:
4757 #ifdef DBUS_HAVE_INT64
4758 dbus_message_iter_get_uint64 (iter);
4761 case DBUS_TYPE_DOUBLE:
4762 dbus_message_iter_get_double (iter);
4764 case DBUS_TYPE_STRING:
4767 str = dbus_message_iter_get_string (iter);
4770 _dbus_warn ("NULL string in message\n");
4776 case DBUS_TYPE_NAMED:
4779 unsigned char *data;
4782 if (!dbus_message_iter_get_named (iter, &name, &data, &len))
4784 _dbus_warn ("error reading name from named type\n");
4791 case DBUS_TYPE_ARRAY:
4795 if (!dbus_message_iter_init_array_iterator (iter, &child_iter, &array_type))
4797 _dbus_warn ("Failed to init array iterator\n");
4801 while (dbus_message_iter_has_next (&child_iter))
4803 if (!check_message_handling_type (&child_iter, array_type))
4805 _dbus_warn ("error in array element\n");
4809 if (!dbus_message_iter_next (&child_iter))
4814 case DBUS_TYPE_DICT:
4819 if (!dbus_message_iter_init_dict_iterator (iter, &child_iter))
4821 _dbus_warn ("Failed to init dict iterator\n");
4825 while ((entry_type = dbus_message_iter_get_arg_type (&child_iter)) != DBUS_TYPE_INVALID)
4827 key = dbus_message_iter_get_dict_key (&child_iter);
4830 _dbus_warn ("error reading dict key\n");
4835 if (!check_message_handling_type (&child_iter, entry_type))
4837 _dbus_warn ("error in dict value\n");
4841 if (!dbus_message_iter_next (&child_iter))
4848 _dbus_warn ("unknown type %d\n", type);
4857 check_message_handling (DBusMessage *message)
4859 DBusMessageIter iter;
4862 dbus_uint32_t client_serial;
4866 client_serial = dbus_message_get_serial (message);
4868 /* can't use set_serial due to the assertions at the start of it */
4869 set_uint_field (message, FIELD_CLIENT_SERIAL,
4872 if (client_serial != dbus_message_get_serial (message))
4874 _dbus_warn ("get/set cycle for client_serial did not succeed\n");
4878 /* If we implement message_set_arg (message, n, value)
4879 * then we would want to test it here
4882 dbus_message_iter_init (message, &iter);
4883 while ((type = dbus_message_iter_get_arg_type (&iter)) != DBUS_TYPE_INVALID)
4885 if (!check_message_handling_type (&iter, type))
4888 if (!dbus_message_iter_next (&iter))
4899 check_have_valid_message (DBusMessageLoader *loader)
4901 DBusMessage *message;
4907 if (!_dbus_message_loader_queue_messages (loader))
4908 _dbus_assert_not_reached ("no memory to queue messages");
4910 if (_dbus_message_loader_get_is_corrupted (loader))
4912 _dbus_warn ("loader corrupted on message that was expected to be valid\n");
4916 message = _dbus_message_loader_pop_message (loader);
4917 if (message == NULL)
4919 _dbus_warn ("didn't load message that was expected to be valid (message not popped)\n");
4923 if (_dbus_string_get_length (&loader->data) > 0)
4925 _dbus_warn ("had leftover bytes from expected-to-be-valid single message\n");
4929 /* Verify that we're able to properly deal with the message.
4930 * For example, this would detect improper handling of messages
4931 * in nonstandard byte order.
4933 if (!check_message_handling (message))
4940 dbus_message_unref (message);
4946 check_invalid_message (DBusMessageLoader *loader)
4952 if (!_dbus_message_loader_queue_messages (loader))
4953 _dbus_assert_not_reached ("no memory to queue messages");
4955 if (!_dbus_message_loader_get_is_corrupted (loader))
4957 _dbus_warn ("loader not corrupted on message that was expected to be invalid\n");
4968 check_incomplete_message (DBusMessageLoader *loader)
4970 DBusMessage *message;
4976 if (!_dbus_message_loader_queue_messages (loader))
4977 _dbus_assert_not_reached ("no memory to queue messages");
4979 if (_dbus_message_loader_get_is_corrupted (loader))
4981 _dbus_warn ("loader corrupted on message that was expected to be valid (but incomplete)\n");
4985 message = _dbus_message_loader_pop_message (loader);
4986 if (message != NULL)
4988 _dbus_warn ("loaded message that was expected to be incomplete\n");
4996 dbus_message_unref (message);
5001 check_loader_results (DBusMessageLoader *loader,
5002 DBusMessageValidity validity)
5004 if (!_dbus_message_loader_queue_messages (loader))
5005 _dbus_assert_not_reached ("no memory to queue messages");
5009 case _DBUS_MESSAGE_VALID:
5010 return check_have_valid_message (loader);
5011 case _DBUS_MESSAGE_INVALID:
5012 return check_invalid_message (loader);
5013 case _DBUS_MESSAGE_INCOMPLETE:
5014 return check_incomplete_message (loader);
5015 case _DBUS_MESSAGE_UNKNOWN:
5019 _dbus_assert_not_reached ("bad DBusMessageValidity");
5025 * Loads the message in the given message file.
5027 * @param filename filename to load
5028 * @param is_raw if #TRUE load as binary data, if #FALSE as message builder language
5029 * @param data string to load message into
5030 * @returns #TRUE if the message was loaded
5033 dbus_internal_do_not_use_load_message_file (const DBusString *filename,
5045 _dbus_verbose ("Loading raw %s\n", _dbus_string_get_const_data (filename));
5046 dbus_error_init (&error);
5047 if (!_dbus_file_get_contents (data, filename, &error))
5049 _dbus_warn ("Could not load message file %s: %s\n",
5050 _dbus_string_get_const_data (filename),
5052 dbus_error_free (&error);
5058 if (!_dbus_message_data_load (data, filename))
5060 _dbus_warn ("Could not load message file %s\n",
5061 _dbus_string_get_const_data (filename));
5074 * Tries loading the message in the given message file
5075 * and verifies that DBusMessageLoader can handle it.
5077 * @param filename filename to load
5078 * @param is_raw if #TRUE load as binary data, if #FALSE as message builder language
5079 * @param expected_validity what the message has to be like to return #TRUE
5080 * @returns #TRUE if the message has the expected validity
5083 dbus_internal_do_not_use_try_message_file (const DBusString *filename,
5085 DBusMessageValidity expected_validity)
5092 if (!_dbus_string_init (&data))
5093 _dbus_assert_not_reached ("could not allocate string\n");
5095 if (!dbus_internal_do_not_use_load_message_file (filename, is_raw,
5099 retval = dbus_internal_do_not_use_try_message_data (&data, expected_validity);
5105 if (_dbus_string_get_length (&data) > 0)
5106 _dbus_verbose_bytes_of_string (&data, 0,
5107 _dbus_string_get_length (&data));
5109 _dbus_warn ("Failed message loader test on %s\n",
5110 _dbus_string_get_const_data (filename));
5113 _dbus_string_free (&data);
5119 * Tries loading the given message data.
5122 * @param data the message data
5123 * @param expected_validity what the message has to be like to return #TRUE
5124 * @returns #TRUE if the message has the expected validity
5127 dbus_internal_do_not_use_try_message_data (const DBusString *data,
5128 DBusMessageValidity expected_validity)
5130 DBusMessageLoader *loader;
5138 /* Write the data one byte at a time */
5140 loader = _dbus_message_loader_new ();
5142 len = _dbus_string_get_length (data);
5143 for (i = 0; i < len; i++)
5147 _dbus_message_loader_get_buffer (loader, &buffer);
5148 _dbus_string_append_byte (buffer,
5149 _dbus_string_get_byte (data, i));
5150 _dbus_message_loader_return_buffer (loader, buffer, 1);
5153 if (!check_loader_results (loader, expected_validity))
5156 _dbus_message_loader_unref (loader);
5159 /* Write the data all at once */
5161 loader = _dbus_message_loader_new ();
5166 _dbus_message_loader_get_buffer (loader, &buffer);
5167 _dbus_string_copy (data, 0, buffer,
5168 _dbus_string_get_length (buffer));
5169 _dbus_message_loader_return_buffer (loader, buffer, 1);
5172 if (!check_loader_results (loader, expected_validity))
5175 _dbus_message_loader_unref (loader);
5178 /* Write the data 2 bytes at a time */
5180 loader = _dbus_message_loader_new ();
5182 len = _dbus_string_get_length (data);
5183 for (i = 0; i < len; i += 2)
5187 _dbus_message_loader_get_buffer (loader, &buffer);
5188 _dbus_string_append_byte (buffer,
5189 _dbus_string_get_byte (data, i));
5191 _dbus_string_append_byte (buffer,
5192 _dbus_string_get_byte (data, i+1));
5193 _dbus_message_loader_return_buffer (loader, buffer, 1);
5196 if (!check_loader_results (loader, expected_validity))
5199 _dbus_message_loader_unref (loader);
5207 _dbus_message_loader_unref (loader);
5213 process_test_subdir (const DBusString *test_base_dir,
5215 DBusMessageValidity validity,
5216 DBusForeachMessageFileFunc function,
5219 DBusString test_directory;
5220 DBusString filename;
5228 if (!_dbus_string_init (&test_directory))
5229 _dbus_assert_not_reached ("didn't allocate test_directory\n");
5231 _dbus_string_init_const (&filename, subdir);
5233 if (!_dbus_string_copy (test_base_dir, 0,
5234 &test_directory, 0))
5235 _dbus_assert_not_reached ("couldn't copy test_base_dir to test_directory");
5237 if (!_dbus_concat_dir_and_file (&test_directory, &filename))
5238 _dbus_assert_not_reached ("couldn't allocate full path");
5240 _dbus_string_free (&filename);
5241 if (!_dbus_string_init (&filename))
5242 _dbus_assert_not_reached ("didn't allocate filename string\n");
5244 dbus_error_init (&error);
5245 dir = _dbus_directory_open (&test_directory, &error);
5248 _dbus_warn ("Could not open %s: %s\n",
5249 _dbus_string_get_const_data (&test_directory),
5251 dbus_error_free (&error);
5255 printf ("Testing:\n");
5258 while (_dbus_directory_get_next_file (dir, &filename, &error))
5260 DBusString full_path;
5263 if (!_dbus_string_init (&full_path))
5264 _dbus_assert_not_reached ("couldn't init string");
5266 if (!_dbus_string_copy (&test_directory, 0, &full_path, 0))
5267 _dbus_assert_not_reached ("couldn't copy dir to full_path");
5269 if (!_dbus_concat_dir_and_file (&full_path, &filename))
5270 _dbus_assert_not_reached ("couldn't concat file to dir");
5272 if (_dbus_string_ends_with_c_str (&filename, ".message"))
5274 else if (_dbus_string_ends_with_c_str (&filename, ".message-raw"))
5278 _dbus_verbose ("Skipping non-.message file %s\n",
5279 _dbus_string_get_const_data (&filename));
5280 _dbus_string_free (&full_path);
5285 _dbus_string_get_const_data (&filename));
5287 _dbus_verbose (" expecting %s\n",
5288 validity == _DBUS_MESSAGE_VALID ? "valid" :
5289 (validity == _DBUS_MESSAGE_INVALID ? "invalid" :
5290 (validity == _DBUS_MESSAGE_INCOMPLETE ? "incomplete" : "unknown")));
5292 if (! (*function) (&full_path, is_raw, validity, user_data))
5294 _dbus_string_free (&full_path);
5298 _dbus_string_free (&full_path);
5301 if (dbus_error_is_set (&error))
5303 _dbus_warn ("Could not get next file in %s: %s\n",
5304 _dbus_string_get_const_data (&test_directory),
5306 dbus_error_free (&error);
5315 _dbus_directory_close (dir);
5316 _dbus_string_free (&test_directory);
5317 _dbus_string_free (&filename);
5323 * Runs the given function on every message file in the test suite.
5324 * The function should return #FALSE on test failure or fatal error.
5326 * @param test_data_dir root dir of the test suite data files (top_srcdir/test/data)
5327 * @param func the function to run
5328 * @param user_data data for function
5329 * @returns #FALSE if there's a failure
5332 dbus_internal_do_not_use_foreach_message_file (const char *test_data_dir,
5333 DBusForeachMessageFileFunc func,
5336 DBusString test_directory;
5341 _dbus_string_init_const (&test_directory, test_data_dir);
5343 if (!process_test_subdir (&test_directory, "valid-messages",
5344 _DBUS_MESSAGE_VALID, func, user_data))
5347 if (!process_test_subdir (&test_directory, "invalid-messages",
5348 _DBUS_MESSAGE_INVALID, func, user_data))
5351 if (!process_test_subdir (&test_directory, "incomplete-messages",
5352 _DBUS_MESSAGE_INCOMPLETE, func, user_data))
5359 _dbus_string_free (&test_directory);
5365 verify_test_message (DBusMessage *message)
5367 dbus_int32_t our_int;
5370 dbus_bool_t our_bool;
5371 dbus_int32_t *our_int_array;
5372 dbus_uint32_t our_uint32;
5373 int our_int_array_len;
5374 DBusMessageIter iter, dict;
5376 #ifdef DBUS_HAVE_INT64
5377 dbus_int64_t our_int64;
5380 dbus_message_iter_init (message, &iter);
5382 dbus_error_init (&error);
5383 if (!dbus_message_iter_get_args (&iter, &error,
5384 DBUS_TYPE_INT32, &our_int,
5385 #ifdef DBUS_HAVE_INT64
5386 DBUS_TYPE_INT64, &our_int64,
5388 DBUS_TYPE_STRING, &our_str,
5389 DBUS_TYPE_DOUBLE, &our_double,
5390 DBUS_TYPE_BOOLEAN, &our_bool,
5391 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, &our_int_array, &our_int_array_len,
5394 _dbus_verbose ("error: %s - %s\n", error.name, (error.message != NULL)?error.message: "no message");
5395 _dbus_assert_not_reached ("Could not get arguments");
5398 if (our_int != -0x12345678)
5399 _dbus_assert_not_reached ("integers differ!");
5401 #ifdef DBUS_HAVE_INT64
5402 if (our_int64 != -0x123456789abcd)
5403 _dbus_assert_not_reached ("64-bit integers differ!");
5406 if (our_double != 3.14159)
5407 _dbus_assert_not_reached ("doubles differ!");
5409 if (strcmp (our_str, "Test string") != 0)
5410 _dbus_assert_not_reached ("strings differ!");
5411 dbus_free (our_str);
5414 _dbus_assert_not_reached ("booleans differ");
5416 if (our_int_array_len != 4 ||
5417 our_int_array[0] != 0x12345678 ||
5418 our_int_array[1] != 0x23456781 ||
5419 our_int_array[2] != 0x34567812 ||
5420 our_int_array[3] != 0x45678123)
5421 _dbus_assert_not_reached ("array differ");
5422 dbus_free (our_int_array);
5424 if (!dbus_message_iter_next (&iter))
5425 _dbus_assert_not_reached ("Reached end of arguments");
5427 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_DICT)
5428 _dbus_assert_not_reached ("not dict type");
5430 if (!dbus_message_iter_init_dict_iterator (&iter, &dict))
5431 _dbus_assert_not_reached ("dict iter failed");
5433 our_str = dbus_message_iter_get_dict_key (&dict);
5434 if (our_str == NULL || strcmp (our_str, "test") != 0)
5435 _dbus_assert_not_reached ("wrong dict key");
5436 dbus_free (our_str);
5438 if (dbus_message_iter_get_arg_type (&dict) != DBUS_TYPE_UINT32)
5440 _dbus_verbose ("dict entry type: %d\n", dbus_message_iter_get_arg_type (&dict));
5441 _dbus_assert_not_reached ("wrong dict entry type");
5444 if ((our_uint32 = dbus_message_iter_get_uint32 (&dict)) != 0xDEADBEEF)
5446 _dbus_verbose ("dict entry val: %x\n", our_uint32);
5447 _dbus_assert_not_reached ("wrong dict entry value");
5450 if (dbus_message_iter_next (&dict))
5451 _dbus_assert_not_reached ("Didn't reach end of dict");
5453 if (!dbus_message_iter_next (&iter))
5454 _dbus_assert_not_reached ("Reached end of arguments");
5456 if (dbus_message_iter_get_arg_type (&iter) != DBUS_TYPE_UINT32)
5457 _dbus_assert_not_reached ("wrong type after dict");
5459 if (dbus_message_iter_get_uint32 (&iter) != 0xCAFEBABE)
5460 _dbus_assert_not_reached ("wrong value after dict");
5462 if (dbus_message_iter_next (&iter))
5463 _dbus_assert_not_reached ("Didn't reach end of arguments");
5467 * @ingroup DBusMessageInternals
5468 * Unit test for DBusMessage.
5470 * @returns #TRUE on success.
5473 _dbus_message_test (const char *test_data_dir)
5475 DBusMessage *message;
5476 DBusMessageLoader *loader;
5477 DBusMessageIter iter, child_iter, child_iter2, child_iter3;
5483 const dbus_uint32_t our_int32_array[] = { 0x12345678, 0x23456781, 0x34567812, 0x45678123 };
5485 _dbus_assert (sizeof (DBusMessageRealIter) <= sizeof (DBusMessageIter));
5487 /* Test the vararg functions */
5488 message = dbus_message_new ("org.freedesktop.DBus.Test", "test.Message");
5489 _dbus_message_set_serial (message, 1);
5490 dbus_message_append_args (message,
5491 DBUS_TYPE_INT32, -0x12345678,
5492 #ifdef DBUS_HAVE_INT64
5493 DBUS_TYPE_INT64, -0x123456789abcd,
5495 DBUS_TYPE_STRING, "Test string",
5496 DBUS_TYPE_DOUBLE, 3.14159,
5497 DBUS_TYPE_BOOLEAN, TRUE,
5498 DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, our_int32_array, 4,
5501 dbus_message_append_iter_init (message, &iter);
5502 dbus_message_iter_append_dict (&iter, &child_iter);
5503 dbus_message_iter_append_dict_key (&child_iter, "test");
5504 dbus_message_iter_append_uint32 (&child_iter, 0xDEADBEEF);
5505 dbus_message_iter_append_uint32 (&iter, 0xCAFEBABE);
5507 _dbus_verbose_bytes_of_string (&message->header, 0,
5508 _dbus_string_get_length (&message->header));
5509 _dbus_verbose_bytes_of_string (&message->body, 0,
5510 _dbus_string_get_length (&message->body));
5512 verify_test_message (message);
5514 copy = dbus_message_copy (message);
5516 _dbus_assert (message->client_serial == copy->client_serial);
5517 _dbus_assert (message->reply_serial == copy->reply_serial);
5518 _dbus_assert (message->header_padding == copy->header_padding);
5520 _dbus_assert (_dbus_string_get_length (&message->header) ==
5521 _dbus_string_get_length (©->header));
5523 _dbus_assert (_dbus_string_get_length (&message->body) ==
5524 _dbus_string_get_length (©->body));
5526 verify_test_message (copy);
5528 name1 = dbus_message_get_name (message);
5529 name2 = dbus_message_get_name (copy);
5531 _dbus_assert (strcmp (name1, name2) == 0);
5533 dbus_message_unref (message);
5534 dbus_message_unref (copy);
5536 message = dbus_message_new ("org.freedesktop.DBus.Test", "test.Message");
5537 _dbus_message_set_serial (message, 1);
5538 dbus_message_set_reply_serial (message, 0x12345678);
5540 dbus_message_append_iter_init (message, &iter);
5541 dbus_message_iter_append_string (&iter, "Test string");
5542 dbus_message_iter_append_int32 (&iter, -0x12345678);
5543 dbus_message_iter_append_uint32 (&iter, 0xedd1e);
5544 dbus_message_iter_append_double (&iter, 3.14159);
5546 dbus_message_iter_append_array (&iter, &child_iter, DBUS_TYPE_DOUBLE);
5547 dbus_message_iter_append_double (&child_iter, 1.5);
5548 dbus_message_iter_append_double (&child_iter, 2.5);
5551 dbus_message_iter_append_dict (&iter, &child_iter);
5552 dbus_message_iter_append_dict_key (&child_iter, "test");
5553 dbus_message_iter_append_uint32 (&child_iter, 0xDEADBEEF);
5555 /* array of array of int32 (in dict) */
5556 dbus_message_iter_append_dict_key (&child_iter, "array");
5557 dbus_message_iter_append_array (&child_iter, &child_iter2, DBUS_TYPE_ARRAY);
5558 dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_INT32);
5559 dbus_message_iter_append_int32 (&child_iter3, 0x12345678);
5560 dbus_message_iter_append_int32 (&child_iter3, 0x23456781);
5561 _dbus_warn ("next call expected to fail with wrong array type\n");
5562 _dbus_assert (!dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_UINT32));
5563 dbus_message_iter_append_array (&child_iter2, &child_iter3, DBUS_TYPE_INT32);
5564 dbus_message_iter_append_int32 (&child_iter3, 0x34567812);
5565 dbus_message_iter_append_int32 (&child_iter3, 0x45678123);
5566 dbus_message_iter_append_int32 (&child_iter3, 0x56781234);
5568 dbus_message_iter_append_byte (&iter, 0xF0);
5570 dbus_message_iter_append_nil (&iter);
5572 dbus_message_iter_append_named (&iter, "named",
5575 message_iter_test (message);
5577 /* Message loader test */
5578 _dbus_message_lock (message);
5579 loader = _dbus_message_loader_new ();
5581 /* Write the header data one byte at a time */
5582 data = _dbus_string_get_const_data (&message->header);
5583 for (i = 0; i < _dbus_string_get_length (&message->header); i++)
5587 _dbus_message_loader_get_buffer (loader, &buffer);
5588 _dbus_string_append_byte (buffer, data[i]);
5589 _dbus_message_loader_return_buffer (loader, buffer, 1);
5592 /* Write the body data one byte at a time */
5593 data = _dbus_string_get_const_data (&message->body);
5594 for (i = 0; i < _dbus_string_get_length (&message->body); i++)
5598 _dbus_message_loader_get_buffer (loader, &buffer);
5599 _dbus_string_append_byte (buffer, data[i]);
5600 _dbus_message_loader_return_buffer (loader, buffer, 1);
5603 dbus_message_unref (message);
5605 /* Now pop back the message */
5606 if (!_dbus_message_loader_queue_messages (loader))
5607 _dbus_assert_not_reached ("no memory to queue messages");
5609 if (_dbus_message_loader_get_is_corrupted (loader))
5610 _dbus_assert_not_reached ("message loader corrupted");
5612 message = _dbus_message_loader_pop_message (loader);
5614 _dbus_assert_not_reached ("received a NULL message");
5616 if (dbus_message_get_reply_serial (message) != 0x12345678)
5617 _dbus_assert_not_reached ("reply serial fields differ");
5619 message_iter_test (message);
5621 dbus_message_unref (message);
5622 _dbus_message_loader_unref (loader);
5624 /* Now load every message in test_data_dir if we have one */
5625 if (test_data_dir == NULL)
5628 return dbus_internal_do_not_use_foreach_message_file (test_data_dir,
5629 (DBusForeachMessageFileFunc)
5630 dbus_internal_do_not_use_try_message_file,
5634 #endif /* DBUS_BUILD_TESTS */