1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* dbus-message.c DBusMessage object
4 * Copyright (C) 2002, 2003 Red Hat Inc.
5 * Copyright (C) 2002, 2003 CodeFactory AB
7 * Licensed under the Academic Free License version 1.2
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include "dbus-internals.h"
26 #include "dbus-marshal.h"
27 #include "dbus-message.h"
28 #include "dbus-message-internal.h"
29 #include "dbus-memory.h"
30 #include "dbus-list.h"
31 #include "dbus-message-builder.h"
35 * @defgroup DBusMessageInternals DBusMessage implementation details
36 * @ingroup DBusInternals
37 * @brief DBusMessage private implementation details.
39 * The guts of DBusMessage and its methods.
57 static dbus_bool_t field_is_named[FIELD_LAST] =
59 FALSE, /* FIELD_HEADER_LENGTH */
60 FALSE, /* FIELD_BODY_LENGTH */
61 FALSE, /* FIELD_CLIENT_SERIAL */
62 TRUE, /* FIELD_NAME */
63 TRUE, /* FIELD_SERVICE */
64 TRUE, /* FIELD_SENDER */
65 TRUE /* FIELD_REPLY_SERIAL */
70 int offset; /**< Offset to start of field (location of name of field
76 * @brief Internals of DBusMessage
78 * Object representing a message received from or to be sent to
79 * another application. This is an opaque object, all members
84 dbus_atomic_t refcount; /**< Reference count */
86 DBusString header; /**< Header network data, stored
87 * separately from body so we can
88 * independently realloc it.
91 HeaderField header_fields[FIELD_LAST]; /**< Track the location
92 * of each field in "header"
95 dbus_int32_t client_serial; /**< Cached client serial value for speed */
96 dbus_int32_t reply_serial; /**< Cached reply serial value for speed */
98 int header_padding; /**< bytes of alignment in header */
100 DBusString body; /**< Body network data. */
102 char byte_order; /**< Message byte order. */
104 DBusCounter *size_counter; /**< Counter for the size of the message, or #NULL */
105 long size_counter_delta; /**< Size we incremented the size counter by. */
107 unsigned int locked : 1; /**< Message being sent, no modifications allowed. */
111 * @brief Internals of DBusMessageIter
113 * Object representing a position in a message. All fields are internal.
115 struct DBusMessageIter
117 int refcount; /**< Reference count */
119 int pos; /**< Current position in the string */
121 DBusMessage *message; /**< Message used */
125 * Gets the data to be sent over the network for this message.
126 * The header and then the body should be written out.
127 * This function is guaranteed to always return the same
128 * data once a message is locked (with _dbus_message_lock()).
130 * @param message the message.
131 * @param header return location for message header data.
132 * @param body return location for message body data.
135 _dbus_message_get_network_data (DBusMessage *message,
136 const DBusString **header,
137 const DBusString **body)
139 _dbus_assert (message->locked);
141 *header = &message->header;
142 *body = &message->body;
146 clear_header_padding (DBusMessage *message)
148 _dbus_string_shorten (&message->header,
149 message->header_padding);
150 message->header_padding = 0;
154 append_header_padding (DBusMessage *message)
157 old_len = _dbus_string_get_length (&message->header);
158 if (!_dbus_string_align_length (&message->header, 8))
161 message->header_padding = _dbus_string_get_length (&message->header) - old_len;
167 adjust_field_offsets (DBusMessage *message,
177 while (i < FIELD_LAST)
179 if (message->header_fields[i].offset > offsets_after)
180 message->header_fields[i].offset += delta;
187 get_string_field (DBusMessage *message,
194 offset = message->header_fields[field].offset;
196 _dbus_assert (field < FIELD_LAST);
201 /* offset points to string length, string data follows it */
202 /* FIXME _dbus_demarshal_const_string() that returned
203 * a reference to the string plus its len might be nice.
207 *len = _dbus_demarshal_uint32 (&message->header,
212 _dbus_string_get_const_data (&message->header,
215 return data + (offset + 4);
219 get_int_field (DBusMessage *message,
224 _dbus_assert (field < FIELD_LAST);
226 offset = message->header_fields[field].offset;
229 return -1; /* useless if -1 is a valid value of course */
231 return _dbus_demarshal_int32 (&message->header,
238 append_int_field (DBusMessage *message,
245 _dbus_assert (!message->locked);
247 clear_header_padding (message);
249 orig_len = _dbus_string_get_length (&message->header);
251 if (!_dbus_string_align_length (&message->header, 4))
254 if (!_dbus_string_append_len (&message->header, name, 4))
257 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_INT32))
260 if (!_dbus_string_align_length (&message->header, 4))
263 message->header_fields[FIELD_REPLY_SERIAL].offset =
264 _dbus_string_get_length (&message->header);
266 if (!_dbus_marshal_int32 (&message->header, message->byte_order,
270 if (!append_header_padding (message))
276 message->header_fields[field].offset = -1;
277 _dbus_string_set_length (&message->header, orig_len);
279 /* this must succeed because it was allocated on function entry and
280 * DBusString doesn't ever realloc smaller
282 if (!append_header_padding (message))
283 _dbus_assert_not_reached ("failed to reappend header padding");
288 append_string_field (DBusMessage *message,
295 _dbus_assert (!message->locked);
297 clear_header_padding (message);
299 orig_len = _dbus_string_get_length (&message->header);
301 if (!_dbus_string_align_length (&message->header, 4))
304 if (!_dbus_string_append_len (&message->header, name, 4))
307 if (!_dbus_string_append_byte (&message->header, DBUS_TYPE_STRING))
310 if (!_dbus_string_align_length (&message->header, 4))
313 message->header_fields[field].offset =
314 _dbus_string_get_length (&message->header);
316 if (!_dbus_marshal_string (&message->header, message->byte_order,
320 if (!append_header_padding (message))
326 message->header_fields[field].offset = -1;
327 _dbus_string_set_length (&message->header, orig_len);
329 /* this must succeed because it was allocated on function entry and
330 * DBusString doesn't ever realloc smaller
332 if (!append_header_padding (message))
333 _dbus_assert_not_reached ("failed to reappend header padding");
339 delete_int_field (DBusMessage *message,
342 int offset = message->header_fields[field].offset;
344 _dbus_assert (!message->locked);
345 _dbus_assert (field_is_named[field]);
350 clear_header_padding (message);
352 /* The field typecode and name take up 8 bytes */
353 _dbus_string_delete (&message->header,
357 message->header_fields[field].offset = -1;
359 adjust_field_offsets (message,
363 append_header_padding (message);
367 delete_string_field (DBusMessage *message,
370 int offset = message->header_fields[field].offset;
374 _dbus_assert (!message->locked);
375 _dbus_assert (field_is_named[field]);
380 clear_header_padding (message);
382 get_string_field (message, field, &len);
384 /* The field typecode and name take up 8 bytes, and the nul
385 * termination is 1 bytes, string length integer is 4 bytes
387 delete_len = 8 + 4 + 1 + len;
389 _dbus_string_delete (&message->header,
393 message->header_fields[field].offset = -1;
395 adjust_field_offsets (message,
399 append_header_padding (message);
403 set_int_field (DBusMessage *message,
407 int offset = message->header_fields[field].offset;
409 _dbus_assert (!message->locked);
413 /* need to append the field */
417 case FIELD_REPLY_SERIAL:
418 return append_int_field (message, field,
419 DBUS_HEADER_FIELD_REPLY,
422 _dbus_assert_not_reached ("appending an int field we don't support appending");
428 _dbus_marshal_set_int32 (&message->header,
437 set_uint_field (DBusMessage *message,
441 int offset = message->header_fields[field].offset;
443 _dbus_assert (!message->locked);
447 /* need to append the field */
452 _dbus_assert_not_reached ("appending a uint field we don't support appending");
458 _dbus_marshal_set_uint32 (&message->header,
467 set_string_field (DBusMessage *message,
471 int offset = message->header_fields[field].offset;
473 _dbus_assert (!message->locked);
474 _dbus_assert (value != NULL);
478 /* need to append the field */
483 return append_string_field (message, field,
484 DBUS_HEADER_FIELD_SENDER,
487 _dbus_assert_not_reached ("appending a string field we don't support appending");
498 clear_header_padding (message);
500 old_len = _dbus_string_get_length (&message->header);
502 len = strlen (value);
504 _dbus_string_init_const_len (&v, value,
505 len + 1); /* include nul */
506 if (!_dbus_marshal_set_string (&message->header,
512 new_len = _dbus_string_get_length (&message->header);
514 adjust_field_offsets (message,
518 if (!append_header_padding (message))
524 /* this must succeed because it was allocated on function entry and
525 * DBusString doesn't ever realloc smaller
527 if (!append_header_padding (message))
528 _dbus_assert_not_reached ("failed to reappend header padding");
535 * Sets the serial number of a message.
536 * This can only be done once on a message.
538 * @param message the message
539 * @param serial the serial
542 _dbus_message_set_serial (DBusMessage *message,
545 _dbus_assert (!message->locked);
546 _dbus_assert (dbus_message_get_serial (message) < 0);
548 set_int_field (message, FIELD_CLIENT_SERIAL,
550 message->client_serial = serial;
554 * Sets the reply serial of a message (the client serial
555 * of the message this is a reply to).
557 * @param message the message
558 * @param reply_serial the client serial
559 * @returns #FALSE if not enough memory
562 dbus_message_set_reply_serial (DBusMessage *message,
563 dbus_int32_t reply_serial)
565 _dbus_assert (!message->locked);
567 if (set_int_field (message, FIELD_REPLY_SERIAL,
570 message->reply_serial = reply_serial;
578 * Returns the serial of a message or -1 if none has been specified.
579 * The message's serial number is provided by the application sending
580 * the message and is used to identify replies to this message.
582 * @param message the message
583 * @returns the client serial
586 dbus_message_get_serial (DBusMessage *message)
588 return message->client_serial;
592 * Returns the serial that the message is
593 * a reply to or -1 if none.
595 * @param message the message
596 * @returns the reply serial
599 dbus_message_get_reply_serial (DBusMessage *message)
601 return message->reply_serial;
605 * Adds a counter to be incremented immediately with the
606 * size of this message, and decremented by the size
607 * of this message when this message if finalized.
609 * @param message the message
610 * @param counter the counter
613 _dbus_message_add_size_counter (DBusMessage *message,
614 DBusCounter *counter)
616 _dbus_assert (message->size_counter == NULL); /* If this fails we may need to keep a list of
617 * counters instead of just one
620 message->size_counter = counter;
621 _dbus_counter_ref (message->size_counter);
623 /* When we can change message size, we may want to
624 * update this each time we do so, or we may want to
625 * just KISS like this.
627 message->size_counter_delta =
628 _dbus_string_get_length (&message->header) +
629 _dbus_string_get_length (&message->body);
631 _dbus_verbose ("message has size %ld\n",
632 message->size_counter_delta);
634 _dbus_counter_adjust (message->size_counter, message->size_counter_delta);
638 dbus_message_create_header (DBusMessage *message,
644 if (!_dbus_string_append_byte (&message->header, message->byte_order))
648 if (!_dbus_string_append_byte (&message->header, flags))
651 if (!_dbus_string_append_byte (&message->header, DBUS_MAJOR_PROTOCOL_VERSION))
654 if (!_dbus_string_append_byte (&message->header, 0))
657 message->header_fields[FIELD_HEADER_LENGTH].offset = 4;
658 if (!_dbus_marshal_uint32 (&message->header, message->byte_order, 0))
661 message->header_fields[FIELD_BODY_LENGTH].offset = 8;
662 if (!_dbus_marshal_uint32 (&message->header, message->byte_order, 0))
665 message->header_fields[FIELD_CLIENT_SERIAL].offset = 12;
666 if (!_dbus_marshal_int32 (&message->header, message->byte_order, -1))
669 /* Marshal message service */
672 if (!append_string_field (message,
674 DBUS_HEADER_FIELD_SERVICE,
679 _dbus_assert (name != NULL);
680 if (!append_string_field (message,
682 DBUS_HEADER_FIELD_NAME,
690 * Locks a message. Allows checking that applications don't keep a
691 * reference to a message in the outgoing queue and change it
692 * underneath us. Messages are locked when they enter the outgoing
693 * queue (dbus_connection_send_message()), and the library complains
694 * if the message is modified while locked.
696 * @param message the message to lock.
699 _dbus_message_lock (DBusMessage *message)
701 if (!message->locked)
703 /* Fill in our lengths */
704 set_uint_field (message,
706 _dbus_string_get_length (&message->header));
708 set_uint_field (message,
710 _dbus_string_get_length (&message->body));
712 message->locked = TRUE;
719 * @defgroup DBusMessage DBusMessage
721 * @brief Message to be sent or received over a DBusConnection.
723 * A DBusMessage is the most basic unit of communication over a
724 * DBusConnection. A DBusConnection represents a stream of messages
725 * received from a remote application, and a stream of messages
726 * sent to a remote application.
732 * @typedef DBusMessage
734 * Opaque data type representing a message received from or to be
735 * sent to another application.
739 dbus_message_new_empty_header (void)
741 DBusMessage *message;
744 message = dbus_new0 (DBusMessage, 1);
748 message->refcount = 1;
749 message->byte_order = DBUS_COMPILER_BYTE_ORDER;
750 message->client_serial = -1;
751 message->reply_serial = -1;
754 while (i < FIELD_LAST)
756 message->header_fields[i].offset = -1;
760 if (!_dbus_string_init (&message->header, _DBUS_INT_MAX))
766 if (!_dbus_string_init (&message->body, _DBUS_INT_MAX))
768 _dbus_string_free (&message->header);
778 * Constructs a new message. Returns #NULL if memory can't be
779 * allocated for the message. The service may be #NULL in which case
780 * no service is set; this is appropriate when using D-BUS in a
781 * peer-to-peer context (no message bus).
783 * @todo reverse the arguments, first 'name' then 'service'
784 * as 'name' is more fundamental
786 * @param service service that the message should be sent to or #NULL
787 * @param name name of the message
788 * @returns a new DBusMessage, free with dbus_message_unref()
789 * @see dbus_message_unref()
792 dbus_message_new (const char *service,
795 DBusMessage *message;
797 message = dbus_message_new_empty_header ();
801 if (!dbus_message_create_header (message, service, name))
803 dbus_message_unref (message);
811 * Constructs a message that is a reply to some other
812 * message. Returns #NULL if memory can't be allocated
815 * @param original_message the message which the created
816 * message is a reply to.
817 * @returns a new DBusMessage, free with dbus_message_unref()
818 * @see dbus_message_new(), dbus_message_unref()
821 dbus_message_new_reply (DBusMessage *original_message)
823 DBusMessage *message;
824 const char *sender, *name;
826 sender = get_string_field (original_message,
828 name = get_string_field (original_message,
831 /* sender is allowed to be null here in peer-to-peer case */
833 message = dbus_message_new (sender, name);
838 if (!dbus_message_set_reply_serial (message,
839 dbus_message_get_serial (original_message)))
841 dbus_message_unref (message);
849 * Creates a new message that is an error reply to a certain message.
851 * @param original_message the original message
852 * @param error_name the error name
853 * @param error_message the error message string
854 * @returns a new error message
857 dbus_message_new_error_reply (DBusMessage *original_message,
858 const char *error_name,
859 const char *error_message)
861 DBusMessage *message;
864 sender = get_string_field (original_message,
867 _dbus_assert (sender != NULL);
869 message = dbus_message_new (sender, error_name);
874 if (!dbus_message_set_reply_serial (message,
875 dbus_message_get_serial (original_message)))
877 dbus_message_unref (message);
881 if (!dbus_message_append_string (message, error_message))
883 dbus_message_unref (message);
887 dbus_message_set_is_error (message, TRUE);
893 * Creates a new message that is an exact replica of the message
894 * specified, except that its refcount is set to 1.
896 * @param message the message.
897 * @returns the new message.
900 dbus_message_copy (const DBusMessage *message)
905 retval = dbus_new0 (DBusMessage, 1);
909 retval->refcount = 1;
910 retval->byte_order = message->byte_order;
911 retval->client_serial = message->client_serial;
912 retval->reply_serial = message->reply_serial;
913 retval->header_padding = message->header_padding;
914 retval->locked = FALSE;
916 if (!_dbus_string_init (&retval->header, _DBUS_INT_MAX))
922 if (!_dbus_string_init (&retval->body, _DBUS_INT_MAX))
924 _dbus_string_free (&retval->header);
929 if (!_dbus_string_copy (&message->header, 0,
932 _dbus_string_free (&retval->header);
933 _dbus_string_free (&retval->body);
939 if (!_dbus_string_copy (&message->body, 0,
942 _dbus_string_free (&retval->header);
943 _dbus_string_free (&retval->body);
949 for (i = 0; i < FIELD_LAST; i++)
951 retval->header_fields[i].offset = message->header_fields[i].offset;
959 * Increments the reference count of a DBusMessage.
961 * @param message The message
962 * @see dbus_message_unref
965 dbus_message_ref (DBusMessage *message)
967 dbus_atomic_t refcount;
969 refcount = _dbus_atomic_inc (&message->refcount);
970 _dbus_assert (refcount > 1);
974 * Decrements the reference count of a DBusMessage.
976 * @param message The message
977 * @see dbus_message_ref
980 dbus_message_unref (DBusMessage *message)
982 dbus_atomic_t refcount;
984 refcount = _dbus_atomic_dec (&message->refcount);
986 _dbus_assert (refcount >= 0);
990 if (message->size_counter != NULL)
992 _dbus_counter_adjust (message->size_counter,
993 - message->size_counter_delta);
994 _dbus_counter_unref (message->size_counter);
997 _dbus_string_free (&message->header);
998 _dbus_string_free (&message->body);
1000 dbus_free (message);
1005 * Gets the name of a message.
1007 * @param message the message
1008 * @returns the message name (should not be freed)
1011 dbus_message_get_name (DBusMessage *message)
1013 return get_string_field (message, FIELD_NAME, NULL);
1017 * Gets the destination service of a message.
1019 * @param message the message
1020 * @returns the message destination service (should not be freed)
1023 dbus_message_get_service (DBusMessage *message)
1025 return get_string_field (message, FIELD_SERVICE, NULL);
1029 * Appends fields to a message given a variable argument
1030 * list. The variable argument list should contain the type
1031 * of the argument followed by the value to add. Array values
1032 * are specified by a pointer to the array followed by an int
1033 * giving the length of the array. The list is terminated
1036 * @param message the message
1037 * @param first_arg_type type of the first argument
1038 * @param ... value of first argument, list of additional type-value pairs
1039 * @returns #TRUE on success
1042 dbus_message_append_args (DBusMessage *message,
1049 va_start (var_args, first_arg_type);
1050 retval = dbus_message_append_args_valist (message,
1059 * This function takes a va_list for use by language bindings
1061 * @see dbus_message_append_args.
1062 * @param message the message
1063 * @param first_arg_type type of first argument
1064 * @param var_args value of first argument, then list of type/value pairs
1065 * @returns #TRUE on success
1068 dbus_message_append_args_valist (DBusMessage *message,
1074 old_len = _dbus_string_get_length (&message->body);
1076 type = first_arg_type;
1083 if (!dbus_message_append_nil (message))
1085 case DBUS_TYPE_BOOLEAN:
1086 if (!dbus_message_append_boolean (message, va_arg (var_args, dbus_bool_t)))
1089 case DBUS_TYPE_INT32:
1090 if (!dbus_message_append_int32 (message, va_arg (var_args, dbus_int32_t)))
1093 case DBUS_TYPE_UINT32:
1094 if (!dbus_message_append_uint32 (message, va_arg (var_args, dbus_uint32_t)))
1097 case DBUS_TYPE_DOUBLE:
1098 if (!dbus_message_append_double (message, va_arg (var_args, double)))
1101 case DBUS_TYPE_STRING:
1102 if (!dbus_message_append_string (message, va_arg (var_args, const char *)))
1105 case DBUS_TYPE_BOOLEAN_ARRAY:
1108 unsigned char *data;
1110 data = va_arg (var_args, unsigned char *);
1111 len = va_arg (var_args, int);
1113 if (!dbus_message_append_boolean_array (message, data, len))
1117 case DBUS_TYPE_INT32_ARRAY:
1122 data = va_arg (var_args, dbus_int32_t *);
1123 len = va_arg (var_args, int);
1125 if (!dbus_message_append_int32_array (message, data, len))
1129 case DBUS_TYPE_UINT32_ARRAY:
1132 dbus_uint32_t *data;
1134 data = va_arg (var_args, dbus_uint32_t *);
1135 len = va_arg (var_args, int);
1137 if (!dbus_message_append_uint32_array (message, data, len))
1141 case DBUS_TYPE_DOUBLE_ARRAY:
1146 data = va_arg (var_args, double *);
1147 len = va_arg (var_args, int);
1149 if (!dbus_message_append_double_array (message, data, len))
1153 case DBUS_TYPE_BYTE_ARRAY:
1156 unsigned char *data;
1158 data = va_arg (var_args, unsigned char *);
1159 len = va_arg (var_args, int);
1161 if (!dbus_message_append_byte_array (message, data, len))
1165 case DBUS_TYPE_STRING_ARRAY:
1170 data = va_arg (var_args, const char **);
1171 len = va_arg (var_args, int);
1173 if (!dbus_message_append_string_array (message, data, len))
1177 case DBUS_TYPE_DICT:
1181 dict = va_arg (var_args, DBusDict *);
1183 if (!dbus_message_append_dict (message, dict))
1187 _dbus_warn ("Unknown field type %d\n", type);
1190 type = va_arg (var_args, int);
1200 * Appends a nil value to the message
1202 * @param message the message
1203 * @returns #TRUE on success
1206 dbus_message_append_nil (DBusMessage *message)
1208 _dbus_assert (!message->locked);
1210 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_NIL))
1217 * Appends a boolean value to the message
1219 * @param message the message
1220 * @param value the boolean value
1221 * @returns #TRUE on success
1224 dbus_message_append_boolean (DBusMessage *message,
1227 _dbus_assert (!message->locked);
1229 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_BOOLEAN))
1232 if (!_dbus_string_append_byte (&message->body, (value != FALSE)))
1234 _dbus_string_shorten (&message->body, 1);
1242 * Appends a 32 bit signed integer to the message.
1244 * @param message the message
1245 * @param value the integer value
1246 * @returns #TRUE on success
1249 dbus_message_append_int32 (DBusMessage *message,
1252 _dbus_assert (!message->locked);
1254 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_INT32))
1257 if (!_dbus_marshal_int32 (&message->body, message->byte_order, value))
1259 _dbus_string_shorten (&message->body, 1);
1267 * Appends a 32 bit unsigned integer to the message.
1269 * @param message the message
1270 * @param value the integer value
1271 * @returns #TRUE on success
1274 dbus_message_append_uint32 (DBusMessage *message,
1275 dbus_uint32_t value)
1277 _dbus_assert (!message->locked);
1279 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_UINT32))
1282 if (!_dbus_marshal_uint32 (&message->body, message->byte_order, value))
1284 _dbus_string_shorten (&message->body, 1);
1292 * Appends a double value to the message.
1294 * @param message the message
1295 * @param value the double value
1296 * @returns #TRUE on success
1299 dbus_message_append_double (DBusMessage *message,
1302 _dbus_assert (!message->locked);
1304 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_DOUBLE))
1307 if (!_dbus_marshal_double (&message->body, message->byte_order, value))
1309 _dbus_string_shorten (&message->body, 1);
1317 * Appends a UTF-8 string to the message.
1319 * @param message the message
1320 * @param value the string
1321 * @returns #TRUE on success
1324 dbus_message_append_string (DBusMessage *message,
1327 _dbus_assert (!message->locked);
1329 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_STRING))
1332 if (!_dbus_marshal_string (&message->body, message->byte_order, value))
1334 _dbus_string_shorten (&message->body, 1);
1342 * Appends a boolean array to the message.
1344 * @param message the message
1345 * @param value the array
1346 * @param len the length of the array
1347 * @returns #TRUE on success
1350 dbus_message_append_boolean_array (DBusMessage *message,
1351 unsigned const char *value,
1354 _dbus_assert (!message->locked);
1356 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_BOOLEAN_ARRAY))
1359 if (!_dbus_marshal_byte_array (&message->body, message->byte_order, value, len))
1361 _dbus_string_shorten (&message->body, 1);
1369 * Appends a 32 bit signed integer array to the message.
1371 * @param message the message
1372 * @param value the array
1373 * @param len the length of the array
1374 * @returns #TRUE on success
1377 dbus_message_append_int32_array (DBusMessage *message,
1378 const dbus_int32_t *value,
1381 _dbus_assert (!message->locked);
1383 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_INT32_ARRAY))
1386 if (!_dbus_marshal_int32_array (&message->body, message->byte_order,
1389 _dbus_string_shorten (&message->body, 1);
1397 * Appends a 32 bit unsigned integer array to the message.
1399 * @param message the message
1400 * @param value the array
1401 * @param len the length of the array
1402 * @returns #TRUE on success
1405 dbus_message_append_uint32_array (DBusMessage *message,
1406 const dbus_uint32_t *value,
1409 _dbus_assert (!message->locked);
1411 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_UINT32_ARRAY))
1414 if (!_dbus_marshal_uint32_array (&message->body, message->byte_order,
1417 _dbus_string_shorten (&message->body, 1);
1425 * Appends a double array to the message.
1427 * @param message the message
1428 * @param value the array
1429 * @param len the length of the array
1430 * @returns #TRUE on success
1433 dbus_message_append_double_array (DBusMessage *message,
1434 const double *value,
1437 _dbus_assert (!message->locked);
1439 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_DOUBLE_ARRAY))
1442 if (!_dbus_marshal_double_array (&message->body, message->byte_order,
1445 _dbus_string_shorten (&message->body, 1);
1453 * Appends a byte array to the message.
1455 * @param message the message
1456 * @param value the array
1457 * @param len the length of the array
1458 * @returns #TRUE on success
1461 dbus_message_append_byte_array (DBusMessage *message,
1462 unsigned const char *value,
1465 _dbus_assert (!message->locked);
1467 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_BYTE_ARRAY))
1470 if (!_dbus_marshal_byte_array (&message->body, message->byte_order, value, len))
1472 _dbus_string_shorten (&message->body, 1);
1480 * Appends a string array to the message.
1482 * @param message the message
1483 * @param value the array
1484 * @param len the length of the array
1485 * @returns #TRUE on success
1488 dbus_message_append_string_array (DBusMessage *message,
1492 _dbus_assert (!message->locked);
1494 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_STRING_ARRAY))
1497 if (!_dbus_marshal_string_array (&message->body, message->byte_order,
1500 _dbus_string_shorten (&message->body, 1);
1508 * Appends a dict to the message.
1510 * @param message the message
1511 * @param dict the dict
1512 * @returns #TRUE on success
1515 dbus_message_append_dict (DBusMessage *message,
1518 _dbus_assert (!message->locked);
1520 if (!_dbus_string_append_byte (&message->body, DBUS_TYPE_DICT))
1523 if (!_dbus_marshal_dict (&message->body, message->byte_order, dict))
1525 _dbus_string_shorten (&message->body, 1);
1533 * Gets arguments from a message given a variable argument list.
1534 * The variable argument list should contain the type of the
1535 * argumen followed by a pointer to where the value should be
1536 * stored. The list is terminated with 0.
1538 * @param message the message
1539 * @param error error to be filled in on failure
1540 * @param first_arg_type the first argument type
1541 * @param ... location for first argument value, then list of type-location pairs
1542 * @returns #FALSE if the error was set
1545 dbus_message_get_args (DBusMessage *message,
1550 DBusResultCode retval;
1553 va_start (var_args, first_arg_type);
1554 retval = dbus_message_get_args_valist (message, error, first_arg_type, var_args);
1561 * This function takes a va_list for use by language bindings
1563 * @todo this function (or some lower-level non-convenience function)
1564 * needs better error handling; should allow the application to
1565 * distinguish between out of memory, and bad data from the remote
1566 * app. It also needs to not leak a bunch of args when it gets
1567 * to the arg that's bad, as that would be a security hole
1568 * (allow one app to force another to leak memory)
1570 * @todo We need to free the argument data when an error occurs.
1572 * @see dbus_message_get_args
1573 * @param message the message
1574 * @param error error to be filled in
1575 * @param first_arg_type type of the first argument
1576 * @param var_args return location for first argument, followed by list of type/location pairs
1577 * @returns #FALSE if error was set
1580 dbus_message_get_args_valist (DBusMessage *message,
1585 int spec_type, msg_type, i;
1586 DBusMessageIter *iter;
1589 iter = dbus_message_get_args_iter (message);
1593 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1594 "No memory to get message arguments");
1600 spec_type = first_arg_type;
1603 while (spec_type != 0)
1605 msg_type = dbus_message_iter_get_arg_type (iter);
1607 if (msg_type != spec_type)
1609 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1610 "Argument %d is specified to be of type \"%s\", but "
1611 "is actually of type \"%s\"\n", i,
1612 _dbus_type_to_string (spec_type),
1613 _dbus_type_to_string (msg_type));
1622 case DBUS_TYPE_BOOLEAN:
1626 ptr = va_arg (var_args, dbus_bool_t *);
1628 *ptr = dbus_message_iter_get_boolean (iter);
1631 case DBUS_TYPE_INT32:
1635 ptr = va_arg (var_args, dbus_int32_t *);
1637 *ptr = dbus_message_iter_get_int32 (iter);
1640 case DBUS_TYPE_UINT32:
1644 ptr = va_arg (var_args, dbus_uint32_t *);
1646 *ptr = dbus_message_iter_get_uint32 (iter);
1650 case DBUS_TYPE_DOUBLE:
1654 ptr = va_arg (var_args, double *);
1656 *ptr = dbus_message_iter_get_double (iter);
1660 case DBUS_TYPE_STRING:
1664 ptr = va_arg (var_args, char **);
1666 *ptr = dbus_message_iter_get_string (iter);
1670 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1671 "No memory for argument %d", i);
1678 case DBUS_TYPE_BOOLEAN_ARRAY:
1680 unsigned char **ptr;
1683 ptr = va_arg (var_args, unsigned char **);
1684 len = va_arg (var_args, int *);
1686 if (!dbus_message_iter_get_boolean_array (iter, ptr, len))
1688 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1689 "No memory for argument %d", i);
1695 case DBUS_TYPE_INT32_ARRAY:
1700 ptr = va_arg (var_args, dbus_int32_t **);
1701 len = va_arg (var_args, int *);
1703 if (!dbus_message_iter_get_int32_array (iter, ptr, len))
1705 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1706 "No memory for argument %d", i);
1713 case DBUS_TYPE_UINT32_ARRAY:
1715 dbus_uint32_t **ptr;
1718 ptr = va_arg (var_args, dbus_uint32_t **);
1719 len = va_arg (var_args, int *);
1721 if (!dbus_message_iter_get_uint32_array (iter, ptr, len))
1723 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1724 "No memory for argument %d", i);
1731 case DBUS_TYPE_DOUBLE_ARRAY:
1736 ptr = va_arg (var_args, double **);
1737 len = va_arg (var_args, int *);
1739 if (!dbus_message_iter_get_double_array (iter, ptr, len))
1741 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1742 "No memory for argument %d", i);
1748 case DBUS_TYPE_BYTE_ARRAY:
1750 unsigned char **ptr;
1753 ptr = va_arg (var_args, unsigned char **);
1754 len = va_arg (var_args, int *);
1756 if (!dbus_message_iter_get_byte_array (iter, ptr, len))
1758 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1759 "No memory for argument %d", i);
1764 case DBUS_TYPE_STRING_ARRAY:
1769 ptr = va_arg (var_args, char ***);
1770 len = va_arg (var_args, int *);
1772 if (!dbus_message_iter_get_string_array (iter, ptr, len))
1774 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1775 "No memory for argument %d", i);
1780 case DBUS_TYPE_DICT:
1784 dict = va_arg (var_args, DBusDict **);
1786 if (!dbus_message_iter_get_dict (iter, dict))
1788 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1789 "No memory for argument %d", i);
1795 _dbus_warn ("Unknown field type %d\n", spec_type);
1798 spec_type = va_arg (var_args, int);
1799 if (spec_type != 0 && !dbus_message_iter_next (iter))
1801 dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
1802 "Message has only %d arguments, but more were expected", i);
1812 dbus_message_iter_unref (iter);
1817 * Returns a DBusMessageIter representing the arguments of the
1818 * message passed in.
1820 * @todo IMO the message iter should follow the GtkTextIter pattern,
1821 * a static object with a "stamp" value used to detect invalid
1822 * iter uses (uninitialized or after changing the message).
1823 * ref/unref is kind of annoying to deal with, and slower too.
1824 * This implies not ref'ing the message from the iter.
1826 * @todo I'd also name this dbus_message_iter_new() or
1827 * for the static object dbus_message_iter_init() rather
1828 * than making it a method on the message
1830 * @param message the message
1831 * @returns a new iter.
1834 dbus_message_get_args_iter (DBusMessage *message)
1836 DBusMessageIter *iter;
1838 iter = dbus_new (DBusMessageIter, 1);
1842 dbus_message_ref (message);
1845 iter->message = message;
1853 * Increments the reference count of a DBusMessageIter.
1855 * @param iter the message iter
1856 * @see dbus_message_iter_unref
1859 dbus_message_iter_ref (DBusMessageIter *iter)
1861 _dbus_assert (iter->refcount > 0);
1863 iter->refcount += 1;
1867 * Decrements the reference count of a DBusMessageIter.
1869 * @param iter The message iter
1870 * @see dbus_message_iter_ref
1873 dbus_message_iter_unref (DBusMessageIter *iter)
1875 _dbus_assert (iter->refcount > 0);
1877 iter->refcount -= 1;
1879 if (iter->refcount == 0)
1881 dbus_message_unref (iter->message);
1888 * Checks if an iterator has any more fields.
1890 * @param iter the message iter
1891 * @returns #TRUE if there are more fields
1895 dbus_message_iter_has_next (DBusMessageIter *iter)
1899 if (!_dbus_marshal_get_arg_end_pos (&iter->message->body,
1900 iter->message->byte_order,
1901 iter->pos, &end_pos))
1904 if (end_pos >= _dbus_string_get_length (&iter->message->body))
1911 * Moves the iterator to the next field.
1913 * @param iter The message iter
1914 * @returns #TRUE if the iterator was moved to the next field
1917 dbus_message_iter_next (DBusMessageIter *iter)
1921 if (!_dbus_marshal_get_arg_end_pos (&iter->message->body,
1922 iter->message->byte_order,
1923 iter->pos, &end_pos))
1926 if (end_pos >= _dbus_string_get_length (&iter->message->body))
1929 iter->pos = end_pos;
1935 * Returns the argument type of the argument that the
1936 * message iterator points at.
1938 * @param iter the message iter
1939 * @returns the field type
1942 dbus_message_iter_get_arg_type (DBusMessageIter *iter)
1946 if (iter->pos >= _dbus_string_get_length (&iter->message->body))
1947 return DBUS_TYPE_INVALID;
1949 _dbus_string_get_const_data_len (&iter->message->body, &data, iter->pos, 1);
1951 if (*data > DBUS_TYPE_INVALID && *data <= DBUS_TYPE_DICT)
1954 return DBUS_TYPE_INVALID;
1958 * Returns the string value that an iterator may point to.
1959 * Note that you need to check that the iterator points to
1960 * a string value before using this function.
1962 * @see dbus_message_iter_get_arg_type
1963 * @param iter the message iter
1964 * @returns the string
1967 dbus_message_iter_get_string (DBusMessageIter *iter)
1969 _dbus_assert (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_STRING);
1971 return _dbus_demarshal_string (&iter->message->body, iter->message->byte_order,
1972 iter->pos + 1, NULL);
1976 * Returns the boolean value that an iterator may point to.
1977 * Note that you need to check that the iterator points to
1978 * a boolean value before using this function.
1980 * @see dbus_message_iter_get_arg_type
1981 * @param iter the message iter
1982 * @returns the string
1985 dbus_message_iter_get_boolean (DBusMessageIter *iter)
1987 unsigned char value;
1989 _dbus_assert (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_BOOLEAN);
1991 value = _dbus_string_get_byte (&iter->message->body, iter->pos + 1);
1998 * Returns the 32 bit signed integer value that an iterator may point to.
1999 * Note that you need to check that the iterator points to
2000 * an integer value before using this function.
2002 * @see dbus_message_iter_get_arg_type
2003 * @param iter the message iter
2004 * @returns the integer
2007 dbus_message_iter_get_int32 (DBusMessageIter *iter)
2009 _dbus_assert (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_INT32);
2011 return _dbus_demarshal_int32 (&iter->message->body, iter->message->byte_order,
2012 iter->pos + 1, NULL);
2016 * Returns the 32 bit unsigned integer value that an iterator may point to.
2017 * Note that you need to check that the iterator points to
2018 * an unsigned integer value before using this function.
2020 * @see dbus_message_iter_get_arg_type
2021 * @param iter the message iter
2022 * @returns the integer
2025 dbus_message_iter_get_uint32 (DBusMessageIter *iter)
2027 _dbus_assert (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_UINT32);
2029 return _dbus_demarshal_uint32 (&iter->message->body, iter->message->byte_order,
2030 iter->pos + 1, NULL);
2034 * Returns the double value that an iterator may point to.
2035 * Note that you need to check that the iterator points to
2036 * a string value before using this function.
2038 * @see dbus_message_iter_get_arg_type
2039 * @param iter the message iter
2040 * @returns the double
2043 dbus_message_iter_get_double (DBusMessageIter *iter)
2045 _dbus_assert (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_DOUBLE);
2047 return _dbus_demarshal_double (&iter->message->body, iter->message->byte_order,
2048 iter->pos + 1, NULL);
2052 * Returns the boolean array that the iterator may point to. Note that
2053 * you need to check that the iterator points to an array of the
2054 * correct type prior to using this function.
2056 * @param iter the iterator
2057 * @param value return location for the array
2058 * @param len return location for the array length
2059 * @returns #TRUE on success
2062 dbus_message_iter_get_boolean_array (DBusMessageIter *iter,
2063 unsigned char **value,
2066 _dbus_assert (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_BOOLEAN_ARRAY);
2068 *value = _dbus_demarshal_byte_array (&iter->message->body, iter->message->byte_order,
2069 iter->pos + 1, NULL, len);
2078 * Returns the 32 bit signed integer array that the iterator may point
2079 * to. Note that you need to check that the iterator points to an
2080 * array of the correct type prior to using this function.
2082 * @param iter the iterator
2083 * @param value return location for the array
2084 * @param len return location for the array length
2085 * @returns #TRUE on success
2088 dbus_message_iter_get_int32_array (DBusMessageIter *iter,
2089 dbus_int32_t **value,
2092 _dbus_assert (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_INT32_ARRAY);
2094 *value = _dbus_demarshal_int32_array (&iter->message->body, iter->message->byte_order,
2095 iter->pos + 1, NULL, len);
2104 * Returns the 32 bit unsigned integer array that the iterator may point
2105 * to. Note that you need to check that the iterator points to an
2106 * array of the correct type prior to using this function.
2108 * @param iter the iterator
2109 * @param value return location for the array
2110 * @param len return location for the array length
2111 * @returns #TRUE on success
2114 dbus_message_iter_get_uint32_array (DBusMessageIter *iter,
2115 dbus_uint32_t **value,
2118 _dbus_assert (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_UINT32_ARRAY);
2120 *value = _dbus_demarshal_uint32_array (&iter->message->body, iter->message->byte_order,
2121 iter->pos + 1, NULL, len);
2130 * Returns the double array that the iterator may point to. Note that
2131 * you need to check that the iterator points to an array of the
2132 * correct type prior to using this function.
2134 * @param iter the iterator
2135 * @param value return location for the array
2136 * @param len return location for the array length
2137 * @returns #TRUE on success
2140 dbus_message_iter_get_double_array (DBusMessageIter *iter,
2144 _dbus_assert (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_DOUBLE_ARRAY);
2146 *value = _dbus_demarshal_double_array (&iter->message->body, iter->message->byte_order,
2147 iter->pos + 1, NULL, len);
2156 * Returns the byte array that the iterator may point to.
2157 * Note that you need to check that the iterator points
2158 * to a byte array prior to using this function.
2160 * @param iter the iterator
2161 * @param value return location for array values
2162 * @param len return location for length of byte array
2163 * @returns #TRUE on success
2166 dbus_message_iter_get_byte_array (DBusMessageIter *iter,
2167 unsigned char **value,
2170 _dbus_assert (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_BYTE_ARRAY);
2172 *value = _dbus_demarshal_byte_array (&iter->message->body, iter->message->byte_order,
2173 iter->pos + 1, NULL, len);
2182 * Returns the string array that the iterator may point to.
2183 * Note that you need to check that the iterator points
2184 * to a byte array prior to using this function.
2186 * The returned value is a #NULL-terminated array of strings.
2187 * Each string is a separate malloc block, and the array
2188 * itself is a malloc block. You can free this type of
2189 * string array with dbus_free_string_array().
2191 * @param iter the iterator
2192 * @param value return location for string values
2193 * @param len return location for length of byte array
2194 * @returns #TRUE on success
2197 dbus_message_iter_get_string_array (DBusMessageIter *iter,
2201 _dbus_assert (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_STRING_ARRAY);
2203 *value = _dbus_demarshal_string_array (&iter->message->body, iter->message->byte_order,
2204 iter->pos + 1, NULL, len);
2213 * Returns the dict that the iterator may point to.
2214 * Note that you need to check that the iterator points
2215 * to a dict prior to using this function.
2217 * @param iter the iterator
2218 * @param dict return location for dict
2219 * @returns #TRUE on success
2222 dbus_message_iter_get_dict (DBusMessageIter *iter,
2225 _dbus_assert (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_DICT);
2227 *dict = _dbus_demarshal_dict (&iter->message->body, iter->message->byte_order,
2228 iter->pos + 1, NULL);
2237 * Sets the message sender.
2239 * @param message the message
2240 * @param sender the sender
2241 * @returns #FALSE if not enough memory
2244 dbus_message_set_sender (DBusMessage *message,
2247 _dbus_assert (!message->locked);
2251 delete_string_field (message, FIELD_SENDER);
2256 return set_string_field (message,
2263 * Sets a flag indicating that the message is an error reply
2264 * message, i.e. an "exception" rather than a normal response.
2266 * @param message the message
2267 * @param is_error_reply #TRUE if this is an error message.
2270 dbus_message_set_is_error (DBusMessage *message,
2271 dbus_bool_t is_error_reply)
2275 _dbus_assert (!message->locked);
2277 _dbus_string_get_data_len (&message->header, &header, 1, 1);
2280 *header |= DBUS_HEADER_FLAG_ERROR;
2282 *header &= ~DBUS_HEADER_FLAG_ERROR;
2286 * Returns #TRUE if the message is an error
2287 * reply to some previous message we sent.
2289 * @param message the message
2290 * @returns #TRUE if the message is an error
2293 dbus_message_get_is_error (DBusMessage *message)
2297 _dbus_string_get_const_data_len (&message->header, &header, 1, 1);
2299 return (*header & DBUS_HEADER_FLAG_ERROR) != 0;
2303 * Gets the service which originated this message,
2304 * or #NULL if unknown or inapplicable.
2306 * @param message the message
2307 * @returns the service name or #NULL
2310 dbus_message_get_sender (DBusMessage *message)
2312 return get_string_field (message, FIELD_SENDER, NULL);
2316 * Checks whether the message has the given name.
2317 * If the message has no name or has a different
2318 * name, returns #FALSE.
2320 * @param message the message
2321 * @param name the name to check (must not be #NULL)
2323 * @returns #TRUE if the message has the given name
2326 dbus_message_name_is (DBusMessage *message,
2331 _dbus_assert (name != NULL);
2333 n = dbus_message_get_name (message);
2335 if (n && strcmp (n, name) == 0)
2344 * @addtogroup DBusMessageInternals
2349 * @typedef DBusMessageLoader
2351 * The DBusMessageLoader object encapsulates the process of converting
2352 * a byte stream into a series of DBusMessage. It buffers the incoming
2353 * bytes as efficiently as possible, and generates a queue of
2354 * messages. DBusMessageLoader is typically used as part of a
2355 * DBusTransport implementation. The DBusTransport then hands off
2356 * the loaded messages to a DBusConnection, making the messages
2357 * visible to the application.
2359 * @todo write tests for break-loader that a) randomly delete header
2360 * fields and b) set string fields to zero-length and other funky
2365 /* we definitely use signed ints for sizes, so don't exceed
2366 * _DBUS_INT_MAX; and add 16 for paranoia, since a message
2367 * over 128M is pretty nuts anyhow.
2371 * The maximum sane message size.
2373 #define MAX_SANE_MESSAGE_SIZE (_DBUS_INT_MAX/16)
2376 * Implementation details of DBusMessageLoader.
2377 * All members are private.
2379 struct DBusMessageLoader
2381 int refcount; /**< Reference count. */
2383 DBusString data; /**< Buffered data */
2385 DBusList *messages; /**< Complete messages. */
2387 long max_message_size; /**< Maximum size of a message */
2389 unsigned int buffer_outstanding : 1; /**< Someone is using the buffer to read */
2391 unsigned int corrupted : 1; /**< We got broken data, and are no longer working */
2395 * The initial buffer size of the message loader.
2397 * @todo this should be based on min header size plus some average
2398 * body size, or something. Or rather, the min header size only, if we
2399 * want to try to read only the header, store that in a DBusMessage,
2400 * then read only the body and store that, etc., depends on
2401 * how we optimize _dbus_message_loader_get_buffer() and what
2402 * the exact message format is.
2404 #define INITIAL_LOADER_DATA_LEN 32
2407 * Creates a new message loader. Returns #NULL if memory can't
2410 * @returns new loader, or #NULL.
2413 _dbus_message_loader_new (void)
2415 DBusMessageLoader *loader;
2417 loader = dbus_new0 (DBusMessageLoader, 1);
2421 loader->refcount = 1;
2423 /* Try to cap message size at something that won't *totally* hose
2424 * the system if we have a couple of them.
2426 loader->max_message_size = _DBUS_ONE_MEGABYTE * 32;
2428 if (!_dbus_string_init (&loader->data, _DBUS_INT_MAX))
2434 /* preallocate the buffer for speed, ignore failure */
2435 _dbus_string_set_length (&loader->data, INITIAL_LOADER_DATA_LEN);
2436 _dbus_string_set_length (&loader->data, 0);
2442 * Increments the reference count of the loader.
2444 * @param loader the loader.
2447 _dbus_message_loader_ref (DBusMessageLoader *loader)
2449 loader->refcount += 1;
2453 * Decrements the reference count of the loader and finalizes the
2454 * loader when the count reaches zero.
2456 * @param loader the loader.
2459 _dbus_message_loader_unref (DBusMessageLoader *loader)
2461 loader->refcount -= 1;
2462 if (loader->refcount == 0)
2464 _dbus_list_foreach (&loader->messages,
2465 (DBusForeachFunction) dbus_message_unref,
2467 _dbus_list_clear (&loader->messages);
2468 _dbus_string_free (&loader->data);
2474 * Gets the buffer to use for reading data from the network. Network
2475 * data is read directly into an allocated buffer, which is then used
2476 * in the DBusMessage, to avoid as many extra memcpy's as possible.
2477 * The buffer must always be returned immediately using
2478 * _dbus_message_loader_return_buffer(), even if no bytes are
2479 * successfully read.
2481 * @todo this function can be a lot more clever. For example
2482 * it can probably always return a buffer size to read exactly
2483 * the body of the next message, thus avoiding any memory wastage
2486 * @todo we need to enforce a max length on strings in header fields.
2488 * @param loader the message loader.
2489 * @param buffer the buffer
2492 _dbus_message_loader_get_buffer (DBusMessageLoader *loader,
2493 DBusString **buffer)
2495 _dbus_assert (!loader->buffer_outstanding);
2497 *buffer = &loader->data;
2499 loader->buffer_outstanding = TRUE;
2503 * The smallest header size that can occur.
2504 * (It won't be valid)
2506 #define DBUS_MINIMUM_HEADER_SIZE 16
2508 /** Pack four characters as in "abcd" into a uint32 */
2509 #define FOUR_CHARS_TO_UINT32(a, b, c, d) \
2510 ((((dbus_uint32_t)a) << 24) | \
2511 (((dbus_uint32_t)b) << 16) | \
2512 (((dbus_uint32_t)c) << 8) | \
2515 /** DBUS_HEADER_FIELD_NAME packed into a dbus_uint32_t */
2516 #define DBUS_HEADER_FIELD_NAME_AS_UINT32 \
2517 FOUR_CHARS_TO_UINT32 ('n', 'a', 'm', 'e')
2519 /** DBUS_HEADER_FIELD_SERVICE packed into a dbus_uint32_t */
2520 #define DBUS_HEADER_FIELD_SERVICE_AS_UINT32 \
2521 FOUR_CHARS_TO_UINT32 ('s', 'r', 'v', 'c')
2523 /** DBUS_HEADER_FIELD_REPLY packed into a dbus_uint32_t */
2524 #define DBUS_HEADER_FIELD_REPLY_AS_UINT32 \
2525 FOUR_CHARS_TO_UINT32 ('r', 'p', 'l', 'y')
2527 /** DBUS_HEADER_FIELD_SENDER Packed into a dbus_uint32_t */
2528 #define DBUS_HEADER_FIELD_SENDER_AS_UINT32 \
2529 FOUR_CHARS_TO_UINT32 ('s', 'n', 'd', 'r')
2531 /* FIXME impose max length on name, srvc, sndr */
2533 decode_header_data (const DBusString *data,
2536 HeaderField fields[FIELD_LAST],
2537 int *message_padding)
2543 if (header_len < 16)
2547 while (i < FIELD_LAST)
2549 fields[i].offset = -1;
2553 fields[FIELD_HEADER_LENGTH].offset = 4;
2554 fields[FIELD_BODY_LENGTH].offset = 8;
2555 fields[FIELD_CLIENT_SERIAL].offset = 12;
2557 /* Now handle the named fields. A real named field is at least 4
2558 * bytes for the name, plus a type code (1 byte) plus padding. So
2559 * if we have less than 8 bytes left, it must be alignment padding,
2560 * not a field. While >= 8 bytes can't be entirely alignment
2564 while ((pos + 7) < header_len)
2566 pos = _DBUS_ALIGN_VALUE (pos, 4);
2568 if ((pos + 4) > header_len)
2571 _dbus_string_get_const_data_len (data, &field, pos, 4);
2574 _dbus_assert (_DBUS_ALIGN_ADDRESS (field, 4) == field);
2576 /* I believe FROM_BE is right, but if not we'll find out
2579 switch (DBUS_UINT32_FROM_BE (*(int*)field))
2581 case DBUS_HEADER_FIELD_SERVICE_AS_UINT32:
2582 if (fields[FIELD_SERVICE].offset >= 0)
2584 _dbus_verbose ("%s field provided twice\n",
2585 DBUS_HEADER_FIELD_SERVICE);
2589 fields[FIELD_SERVICE].offset = _DBUS_ALIGN_VALUE (pos + 1, 4);
2590 _dbus_verbose ("Found service name at offset %d\n",
2591 fields[FIELD_SERVICE].offset);
2594 case DBUS_HEADER_FIELD_NAME_AS_UINT32:
2595 if (fields[FIELD_NAME].offset >= 0)
2597 _dbus_verbose ("%s field provided twice\n",
2598 DBUS_HEADER_FIELD_NAME);
2602 fields[FIELD_NAME].offset = _DBUS_ALIGN_VALUE (pos + 1, 4);
2604 _dbus_verbose ("Found message name at offset %d\n",
2605 fields[FIELD_NAME].offset);
2607 case DBUS_HEADER_FIELD_SENDER_AS_UINT32:
2608 if (fields[FIELD_SENDER].offset >= 0)
2610 _dbus_verbose ("%s field provided twice\n",
2611 DBUS_HEADER_FIELD_SENDER);
2615 fields[FIELD_SENDER].offset = _DBUS_ALIGN_VALUE (pos + 1, 4);
2617 _dbus_verbose ("Found sender name at offset %d\n",
2618 fields[FIELD_NAME].offset);
2621 case DBUS_HEADER_FIELD_REPLY_AS_UINT32:
2622 if (fields[FIELD_REPLY_SERIAL].offset >= 0)
2624 _dbus_verbose ("%s field provided twice\n",
2625 DBUS_HEADER_FIELD_REPLY);
2629 fields[FIELD_REPLY_SERIAL].offset = _DBUS_ALIGN_VALUE (pos + 1, 4);
2631 _dbus_verbose ("Found reply serial at offset %d\n",
2632 fields[FIELD_REPLY_SERIAL].offset);
2636 _dbus_verbose ("Ignoring an unknown header field: %c%c%c%c at offset %d\n",
2637 field[0], field[1], field[2], field[3], pos);
2640 if (!_dbus_marshal_validate_arg (data, byte_order, pos, &new_pos))
2642 _dbus_verbose ("Failed to validate argument to named header field\n");
2646 if (new_pos > header_len)
2648 _dbus_verbose ("Named header field tries to extend beyond header length\n");
2655 if (pos < header_len)
2657 /* Alignment padding, verify that it's nul */
2658 _dbus_assert ((header_len - pos) < 8);
2660 if (!_dbus_string_validate_nul (data,
2661 pos, (header_len - pos)))
2663 _dbus_verbose ("header alignment padding is not nul\n");
2668 if (fields[FIELD_NAME].offset < 0)
2670 _dbus_verbose ("No %s field provided\n",
2671 DBUS_HEADER_FIELD_NAME);
2675 if (message_padding)
2676 *message_padding = header_len - pos;
2682 * Returns a buffer obtained from _dbus_message_loader_get_buffer(),
2683 * indicating to the loader how many bytes of the buffer were filled
2684 * in. This function must always be called, even if no bytes were
2685 * successfully read.
2687 * @todo if we run out of memory in here, we offer no way for calling
2688 * code to handle it, i.e. they can't re-run the message parsing
2689 * attempt. Perhaps much of this code could be moved to pop_message()?
2690 * But then that may need to distinguish NULL return for no messages
2691 * from NULL return for errors.
2693 * @param loader the loader.
2694 * @param buffer the buffer.
2695 * @param bytes_read number of bytes that were read into the buffer.
2698 _dbus_message_loader_return_buffer (DBusMessageLoader *loader,
2702 _dbus_assert (loader->buffer_outstanding);
2703 _dbus_assert (buffer == &loader->data);
2705 loader->buffer_outstanding = FALSE;
2707 if (loader->corrupted)
2710 while (_dbus_string_get_length (&loader->data) >= 16)
2712 DBusMessage *message;
2713 const char *header_data;
2714 int byte_order, header_len, body_len, header_padding;
2715 dbus_uint32_t header_len_unsigned, body_len_unsigned;
2717 _dbus_string_get_const_data_len (&loader->data, &header_data, 0, 16);
2719 _dbus_assert (_DBUS_ALIGN_ADDRESS (header_data, 4) == header_data);
2721 if (header_data[2] != DBUS_MAJOR_PROTOCOL_VERSION)
2723 _dbus_verbose ("Message has protocol version %d ours is %d\n",
2724 (int) header_data[2], DBUS_MAJOR_PROTOCOL_VERSION);
2725 loader->corrupted = TRUE;
2729 byte_order = header_data[0];
2731 if (byte_order != DBUS_LITTLE_ENDIAN &&
2732 byte_order != DBUS_BIG_ENDIAN)
2734 _dbus_verbose ("Message with bad byte order '%c' received\n",
2736 loader->corrupted = TRUE;
2740 header_len_unsigned = _dbus_unpack_uint32 (byte_order, header_data + 4);
2741 body_len_unsigned = _dbus_unpack_uint32 (byte_order, header_data + 8);
2743 if (header_len_unsigned < 16)
2745 _dbus_verbose ("Message had broken too-small header length %u\n",
2746 header_len_unsigned);
2747 loader->corrupted = TRUE;
2751 if (header_len_unsigned > (unsigned) MAX_SANE_MESSAGE_SIZE ||
2752 body_len_unsigned > (unsigned) MAX_SANE_MESSAGE_SIZE)
2754 _dbus_verbose ("Header or body length too large (%u %u)\n",
2755 header_len_unsigned,
2757 loader->corrupted = TRUE;
2761 /* Now that we know the values are in signed range, get
2762 * rid of stupid unsigned, just causes bugs
2764 header_len = header_len_unsigned;
2765 body_len = body_len_unsigned;
2767 if (_DBUS_ALIGN_VALUE (header_len, 8) != header_len_unsigned)
2770 _dbus_verbose ("header length %d is not aligned to 8 bytes\n",
2772 loader->corrupted = TRUE;
2776 if (header_len + body_len > loader->max_message_size)
2778 _dbus_verbose ("Message claimed length header = %d body = %d exceeds max message length %d\n",
2779 header_len, body_len, loader->max_message_size);
2780 loader->corrupted = TRUE;
2784 if (_dbus_string_get_length (&loader->data) >= (header_len + body_len))
2786 HeaderField fields[FIELD_LAST];
2791 _dbus_verbose_bytes_of_string (&loader->data, 0, header_len + body_len);
2793 if (!decode_header_data (&loader->data, header_len, byte_order,
2794 fields, &header_padding))
2796 _dbus_verbose ("Header was invalid\n");
2797 loader->corrupted = TRUE;
2801 next_arg = header_len;
2802 while (next_arg < (header_len + body_len))
2804 int prev = next_arg;
2806 if (!_dbus_marshal_validate_arg (&loader->data,
2811 loader->corrupted = TRUE;
2815 _dbus_assert (next_arg > prev);
2818 if (next_arg > (header_len + body_len))
2820 _dbus_verbose ("end of last arg at %d but message has len %d+%d=%d\n",
2821 next_arg, header_len, body_len,
2822 header_len + body_len);
2823 loader->corrupted = TRUE;
2827 message = dbus_message_new_empty_header ();
2828 if (message == NULL)
2829 break; /* ugh, postpone this I guess. */
2831 message->byte_order = byte_order;
2832 message->header_padding = header_padding;
2834 /* Copy in the offsets we found */
2836 while (i < FIELD_LAST)
2838 message->header_fields[i] = fields[i];
2842 if (!_dbus_list_append (&loader->messages, message))
2844 dbus_message_unref (message);
2848 _dbus_assert (_dbus_string_get_length (&message->header) == 0);
2849 _dbus_assert (_dbus_string_get_length (&message->body) == 0);
2851 _dbus_assert (_dbus_string_get_length (&loader->data) >=
2852 (header_len + body_len));
2854 if (!_dbus_string_move_len (&loader->data, 0, header_len, &message->header, 0))
2856 _dbus_list_remove_last (&loader->messages, message);
2857 dbus_message_unref (message);
2861 if (!_dbus_string_move_len (&loader->data, 0, body_len, &message->body, 0))
2865 /* put the header back, we'll try again later */
2866 result = _dbus_string_copy_len (&message->header, 0, header_len,
2868 _dbus_assert (result); /* because DBusString never reallocs smaller */
2870 _dbus_list_remove_last (&loader->messages, message);
2871 dbus_message_unref (message);
2875 _dbus_assert (_dbus_string_get_length (&message->header) == header_len);
2876 _dbus_assert (_dbus_string_get_length (&message->body) == body_len);
2878 /* Fill in caches */
2879 message->reply_serial = get_int_field (message,
2880 FIELD_REPLY_SERIAL);
2881 message->client_serial = get_int_field (message,
2882 FIELD_CLIENT_SERIAL);
2884 _dbus_verbose ("Loaded message %p\n", message);
2892 * Pops a loaded message (passing ownership of the message
2893 * to the caller). Returns #NULL if no messages have been
2896 * @param loader the loader.
2897 * @returns the next message, or #NULL if none.
2900 _dbus_message_loader_pop_message (DBusMessageLoader *loader)
2902 return _dbus_list_pop_first (&loader->messages);
2907 * Checks whether the loader is confused due to bad data.
2908 * If messages are received that are invalid, the
2909 * loader gets confused and gives up permanently.
2910 * This state is called "corrupted."
2912 * @param loader the loader
2913 * @returns #TRUE if the loader is hosed.
2916 _dbus_message_loader_get_is_corrupted (DBusMessageLoader *loader)
2918 return loader->corrupted;
2922 * Sets the maximum size message we allow.
2924 * @param loader the loader
2925 * @param size the max message size in bytes
2928 _dbus_message_loader_set_max_message_size (DBusMessageLoader *loader,
2931 if (size > MAX_SANE_MESSAGE_SIZE)
2933 _dbus_verbose ("clamping requested max message size %ld to %d\n",
2934 size, MAX_SANE_MESSAGE_SIZE);
2935 size = MAX_SANE_MESSAGE_SIZE;
2937 loader->max_message_size = size;
2941 * Gets the maximum allowed message size in bytes.
2943 * @param loader the loader
2944 * @returns max size in bytes
2947 _dbus_message_loader_get_max_message_size (DBusMessageLoader *loader)
2949 return loader->max_message_size;
2953 #ifdef DBUS_BUILD_TESTS
2954 #include "dbus-test.h"
2958 message_iter_test (DBusMessage *message)
2960 DBusMessageIter *iter;
2963 iter = dbus_message_get_args_iter (message);
2966 if (dbus_message_iter_get_arg_type (iter) != DBUS_TYPE_STRING)
2967 _dbus_assert_not_reached ("Argument type isn't string");
2969 str = dbus_message_iter_get_string (iter);
2970 if (strcmp (str, "Test string") != 0)
2971 _dbus_assert_not_reached ("Strings differ");
2974 if (!dbus_message_iter_next (iter))
2975 _dbus_assert_not_reached ("Reached end of arguments");
2977 /* Signed integer tests */
2978 if (dbus_message_iter_get_arg_type (iter) != DBUS_TYPE_INT32)
2979 _dbus_assert_not_reached ("Argument type isn't int32");
2981 if (dbus_message_iter_get_int32 (iter) != -0x12345678)
2982 _dbus_assert_not_reached ("Signed integers differ");
2984 if (!dbus_message_iter_next (iter))
2985 _dbus_assert_not_reached ("Reached end of fields");
2987 /* Unsigned integer tests */
2988 if (dbus_message_iter_get_arg_type (iter) != DBUS_TYPE_UINT32)
2989 _dbus_assert_not_reached ("Argument type isn't int32");
2991 if (dbus_message_iter_get_uint32 (iter) != 0xedd1e)
2992 _dbus_assert_not_reached ("Unsigned integers differ");
2994 if (!dbus_message_iter_next (iter))
2995 _dbus_assert_not_reached ("Reached end of arguments");
2998 if (dbus_message_iter_get_arg_type (iter) != DBUS_TYPE_DOUBLE)
2999 _dbus_assert_not_reached ("Argument type isn't double");
3001 if (dbus_message_iter_get_double (iter) != 3.14159)
3002 _dbus_assert_not_reached ("Doubles differ");
3004 if (dbus_message_iter_next (iter))
3005 _dbus_assert_not_reached ("Didn't reach end of arguments");
3007 dbus_message_iter_unref (iter);
3011 check_message_handling (DBusMessage *message)
3013 DBusMessageIter *iter;
3016 dbus_int32_t client_serial;
3021 client_serial = dbus_message_get_serial (message);
3023 /* can't use set_serial due to the assertions at the start of it */
3024 set_int_field (message, FIELD_CLIENT_SERIAL,
3027 if (client_serial != dbus_message_get_serial (message))
3029 _dbus_warn ("get/set cycle for client_serial did not succeed\n");
3033 /* If we implement message_set_arg (message, n, value)
3034 * then we would want to test it here
3037 iter = dbus_message_get_args_iter (message);
3038 while ((type = dbus_message_iter_get_arg_type (iter)) != DBUS_TYPE_INVALID)
3044 case DBUS_TYPE_INT32:
3045 dbus_message_iter_get_int32 (iter);
3047 case DBUS_TYPE_UINT32:
3048 dbus_message_iter_get_uint32 (iter);
3050 case DBUS_TYPE_DOUBLE:
3051 dbus_message_iter_get_double (iter);
3053 case DBUS_TYPE_STRING:
3056 str = dbus_message_iter_get_string (iter);
3060 case DBUS_TYPE_INT32_ARRAY:
3062 dbus_int32_t *values;
3065 if (!dbus_message_iter_get_int32_array (iter, &values, &len))
3071 case DBUS_TYPE_UINT32_ARRAY:
3073 dbus_uint32_t *values;
3076 if (!dbus_message_iter_get_uint32_array (iter, &values, &len))
3082 case DBUS_TYPE_DOUBLE_ARRAY:
3087 if (!dbus_message_iter_get_double_array (iter, &values, &len))
3093 case DBUS_TYPE_STRING_ARRAY:
3098 if (!dbus_message_iter_get_string_array (iter, &values, &len))
3101 dbus_free_string_array (values);
3105 case DBUS_TYPE_DICT:
3109 if (!dbus_message_iter_get_dict (iter, &dict))
3112 dbus_dict_unref (dict);
3120 if (!dbus_message_iter_next (iter))
3128 dbus_message_iter_unref (iter);
3134 check_have_valid_message (DBusMessageLoader *loader)
3136 DBusMessage *message;
3142 if (_dbus_message_loader_get_is_corrupted (loader))
3144 _dbus_warn ("loader corrupted on message that was expected to be valid\n");
3148 message = _dbus_message_loader_pop_message (loader);
3149 if (message == NULL)
3151 _dbus_warn ("didn't load message that was expected to be valid (message not popped)\n");
3155 if (_dbus_string_get_length (&loader->data) > 0)
3157 _dbus_warn ("had leftover bytes from expected-to-be-valid single message\n");
3161 /* Verify that we're able to properly deal with the message.
3162 * For example, this would detect improper handling of messages
3163 * in nonstandard byte order.
3165 if (!check_message_handling (message))
3172 dbus_message_unref (message);
3178 check_invalid_message (DBusMessageLoader *loader)
3184 if (!_dbus_message_loader_get_is_corrupted (loader))
3186 _dbus_warn ("loader not corrupted on message that was expected to be invalid\n");
3197 check_incomplete_message (DBusMessageLoader *loader)
3199 DBusMessage *message;
3205 if (_dbus_message_loader_get_is_corrupted (loader))
3207 _dbus_warn ("loader corrupted on message that was expected to be valid (but incomplete)\n");
3211 message = _dbus_message_loader_pop_message (loader);
3212 if (message != NULL)
3214 _dbus_warn ("loaded message that was expected to be incomplete\n");
3222 dbus_message_unref (message);
3227 check_loader_results (DBusMessageLoader *loader,
3228 DBusMessageValidity validity)
3232 case _DBUS_MESSAGE_VALID:
3233 return check_have_valid_message (loader);
3234 case _DBUS_MESSAGE_INVALID:
3235 return check_invalid_message (loader);
3236 case _DBUS_MESSAGE_INCOMPLETE:
3237 return check_incomplete_message (loader);
3238 case _DBUS_MESSAGE_UNKNOWN:
3242 _dbus_assert_not_reached ("bad DBusMessageValidity");
3248 * Loads the message in the given message file.
3250 * @param filename filename to load
3251 * @param is_raw if #TRUE load as binary data, if #FALSE as message builder language
3252 * @param data string to load message into
3253 * @returns #TRUE if the message was loaded
3256 dbus_internal_do_not_use_load_message_file (const DBusString *filename,
3268 dbus_error_init (&error);
3269 if (!_dbus_file_get_contents (data, filename, &error))
3272 _dbus_string_get_const_data (filename, &s);
3273 _dbus_warn ("Could not load message file %s: %s\n", s, error.message);
3274 dbus_error_free (&error);
3280 if (!_dbus_message_data_load (data, filename))
3283 _dbus_string_get_const_data (filename, &s);
3284 _dbus_warn ("Could not load message file %s\n", s);
3297 * Tries loading the message in the given message file
3298 * and verifies that DBusMessageLoader can handle it.
3300 * @param filename filename to load
3301 * @param is_raw if #TRUE load as binary data, if #FALSE as message builder language
3302 * @param expected_validity what the message has to be like to return #TRUE
3303 * @returns #TRUE if the message has the expected validity
3306 dbus_internal_do_not_use_try_message_file (const DBusString *filename,
3308 DBusMessageValidity expected_validity)
3315 if (!_dbus_string_init (&data, _DBUS_INT_MAX))
3316 _dbus_assert_not_reached ("could not allocate string\n");
3318 if (!dbus_internal_do_not_use_load_message_file (filename, is_raw,
3322 retval = dbus_internal_do_not_use_try_message_data (&data, expected_validity);
3330 if (_dbus_string_get_length (&data) > 0)
3331 _dbus_verbose_bytes_of_string (&data, 0,
3332 _dbus_string_get_length (&data));
3334 _dbus_string_get_const_data (filename, &s);
3335 _dbus_warn ("Failed message loader test on %s\n",
3339 _dbus_string_free (&data);
3345 * Tries loading the given message data.
3348 * @param data the message data
3349 * @param expected_validity what the message has to be like to return #TRUE
3350 * @returns #TRUE if the message has the expected validity
3353 dbus_internal_do_not_use_try_message_data (const DBusString *data,
3354 DBusMessageValidity expected_validity)
3356 DBusMessageLoader *loader;
3364 /* Write the data one byte at a time */
3366 loader = _dbus_message_loader_new ();
3368 len = _dbus_string_get_length (data);
3369 for (i = 0; i < len; i++)
3373 _dbus_message_loader_get_buffer (loader, &buffer);
3374 _dbus_string_append_byte (buffer,
3375 _dbus_string_get_byte (data, i));
3376 _dbus_message_loader_return_buffer (loader, buffer, 1);
3379 if (!check_loader_results (loader, expected_validity))
3382 _dbus_message_loader_unref (loader);
3385 /* Write the data all at once */
3387 loader = _dbus_message_loader_new ();
3392 _dbus_message_loader_get_buffer (loader, &buffer);
3393 _dbus_string_copy (data, 0, buffer,
3394 _dbus_string_get_length (buffer));
3395 _dbus_message_loader_return_buffer (loader, buffer, 1);
3398 if (!check_loader_results (loader, expected_validity))
3401 _dbus_message_loader_unref (loader);
3404 /* Write the data 2 bytes at a time */
3406 loader = _dbus_message_loader_new ();
3408 len = _dbus_string_get_length (data);
3409 for (i = 0; i < len; i += 2)
3413 _dbus_message_loader_get_buffer (loader, &buffer);
3414 _dbus_string_append_byte (buffer,
3415 _dbus_string_get_byte (data, i));
3417 _dbus_string_append_byte (buffer,
3418 _dbus_string_get_byte (data, i+1));
3419 _dbus_message_loader_return_buffer (loader, buffer, 1);
3422 if (!check_loader_results (loader, expected_validity))
3425 _dbus_message_loader_unref (loader);
3433 _dbus_message_loader_unref (loader);
3439 process_test_subdir (const DBusString *test_base_dir,
3441 DBusMessageValidity validity,
3442 DBusForeachMessageFileFunc function,
3445 DBusString test_directory;
3446 DBusString filename;
3454 if (!_dbus_string_init (&test_directory, _DBUS_INT_MAX))
3455 _dbus_assert_not_reached ("didn't allocate test_directory\n");
3457 _dbus_string_init_const (&filename, subdir);
3459 if (!_dbus_string_copy (test_base_dir, 0,
3460 &test_directory, 0))
3461 _dbus_assert_not_reached ("couldn't copy test_base_dir to test_directory");
3463 if (!_dbus_concat_dir_and_file (&test_directory, &filename))
3464 _dbus_assert_not_reached ("couldn't allocate full path");
3466 _dbus_string_free (&filename);
3467 if (!_dbus_string_init (&filename, _DBUS_INT_MAX))
3468 _dbus_assert_not_reached ("didn't allocate filename string\n");
3470 dbus_error_init (&error);
3471 dir = _dbus_directory_open (&test_directory, &error);
3475 _dbus_string_get_const_data (&test_directory, &s);
3476 _dbus_warn ("Could not open %s: %s\n", s,
3478 dbus_error_free (&error);
3482 printf ("Testing:\n");
3485 while (_dbus_directory_get_next_file (dir, &filename, &error))
3487 DBusString full_path;
3490 if (!_dbus_string_init (&full_path, _DBUS_INT_MAX))
3491 _dbus_assert_not_reached ("couldn't init string");
3493 if (!_dbus_string_copy (&test_directory, 0, &full_path, 0))
3494 _dbus_assert_not_reached ("couldn't copy dir to full_path");
3496 if (!_dbus_concat_dir_and_file (&full_path, &filename))
3497 _dbus_assert_not_reached ("couldn't concat file to dir");
3499 if (_dbus_string_ends_with_c_str (&filename, ".message"))
3501 else if (_dbus_string_ends_with_c_str (&filename, ".message-raw"))
3505 const char *filename_c;
3506 _dbus_string_get_const_data (&filename, &filename_c);
3507 _dbus_verbose ("Skipping non-.message file %s\n",
3509 _dbus_string_free (&full_path);
3515 _dbus_string_get_const_data (&filename, &s);
3516 printf (" %s\n", s);
3519 _dbus_verbose (" expecting %s\n",
3520 validity == _DBUS_MESSAGE_VALID ? "valid" :
3521 (validity == _DBUS_MESSAGE_INVALID ? "invalid" :
3522 (validity == _DBUS_MESSAGE_INCOMPLETE ? "incomplete" : "unknown")));
3524 if (! (*function) (&full_path, is_raw, validity, user_data))
3526 _dbus_string_free (&full_path);
3530 _dbus_string_free (&full_path);
3533 if (dbus_error_is_set (&error))
3536 _dbus_string_get_const_data (&test_directory, &s);
3537 _dbus_warn ("Could not get next file in %s: %s\n",
3539 dbus_error_free (&error);
3548 _dbus_directory_close (dir);
3549 _dbus_string_free (&test_directory);
3550 _dbus_string_free (&filename);
3556 * Runs the given function on every message file in the test suite.
3557 * The function should return #FALSE on test failure or fatal error.
3559 * @param test_data_dir root dir of the test suite data files (top_srcdir/test/data)
3560 * @param func the function to run
3561 * @param user_data data for function
3562 * @returns #FALSE if there's a failure
3565 dbus_internal_do_not_use_foreach_message_file (const char *test_data_dir,
3566 DBusForeachMessageFileFunc func,
3569 DBusString test_directory;
3574 _dbus_string_init_const (&test_directory, test_data_dir);
3576 if (!process_test_subdir (&test_directory, "valid-messages",
3577 _DBUS_MESSAGE_VALID, func, user_data))
3580 if (!process_test_subdir (&test_directory, "invalid-messages",
3581 _DBUS_MESSAGE_INVALID, func, user_data))
3584 if (!process_test_subdir (&test_directory, "incomplete-messages",
3585 _DBUS_MESSAGE_INCOMPLETE, func, user_data))
3592 _dbus_string_free (&test_directory);
3598 verify_test_message (DBusMessage *message)
3600 dbus_int32_t our_int;
3603 dbus_bool_t our_bool;
3605 if (!dbus_message_get_args (message, NULL,
3606 DBUS_TYPE_INT32, &our_int,
3607 DBUS_TYPE_STRING, &our_str,
3608 DBUS_TYPE_DOUBLE, &our_double,
3609 DBUS_TYPE_BOOLEAN, &our_bool,
3611 _dbus_assert_not_reached ("Could not get arguments");
3613 if (our_int != -0x12345678)
3614 _dbus_assert_not_reached ("integers differ!");
3616 if (our_double != 3.14159)
3617 _dbus_assert_not_reached ("doubles differ!");
3619 if (strcmp (our_str, "Test string") != 0)
3620 _dbus_assert_not_reached ("strings differ!");
3623 _dbus_assert_not_reached ("booleans differ");
3625 dbus_free (our_str);
3629 * @ingroup DBusMessageInternals
3630 * Unit test for DBusMessage.
3632 * @returns #TRUE on success.
3635 _dbus_message_test (const char *test_data_dir)
3637 DBusMessage *message;
3638 DBusMessageLoader *loader;
3645 /* Test the vararg functions */
3646 message = dbus_message_new ("org.freedesktop.DBus.Test", "testMessage");
3647 _dbus_message_set_serial (message, 1);
3648 dbus_message_append_args (message,
3649 DBUS_TYPE_INT32, -0x12345678,
3650 DBUS_TYPE_STRING, "Test string",
3651 DBUS_TYPE_DOUBLE, 3.14159,
3652 DBUS_TYPE_BOOLEAN, TRUE,
3654 _dbus_verbose_bytes_of_string (&message->header, 0,
3655 _dbus_string_get_length (&message->header));
3656 _dbus_verbose_bytes_of_string (&message->body, 0,
3657 _dbus_string_get_length (&message->body));
3659 verify_test_message (message);
3661 copy = dbus_message_copy (message);
3663 _dbus_assert (message->client_serial == copy->client_serial);
3664 _dbus_assert (message->reply_serial == copy->reply_serial);
3665 _dbus_assert (message->header_padding == copy->header_padding);
3667 _dbus_assert (_dbus_string_get_length (&message->header) ==
3668 _dbus_string_get_length (©->header));
3670 _dbus_assert (_dbus_string_get_length (&message->body) ==
3671 _dbus_string_get_length (©->body));
3673 verify_test_message (copy);
3675 name1 = dbus_message_get_name (message);
3676 name2 = dbus_message_get_name (copy);
3678 _dbus_assert (strcmp (name1, name2) == 0);
3680 dbus_message_unref (message);
3681 dbus_message_unref (copy);
3683 message = dbus_message_new ("org.freedesktop.DBus.Test", "testMessage");
3684 _dbus_message_set_serial (message, 1);
3685 dbus_message_set_reply_serial (message, 0x12345678);
3687 dbus_message_append_string (message, "Test string");
3688 dbus_message_append_int32 (message, -0x12345678);
3689 dbus_message_append_uint32 (message, 0xedd1e);
3690 dbus_message_append_double (message, 3.14159);
3692 message_iter_test (message);
3694 /* Message loader test */
3695 _dbus_message_lock (message);
3696 loader = _dbus_message_loader_new ();
3698 /* Write the header data one byte at a time */
3699 _dbus_string_get_const_data (&message->header, &data);
3700 for (i = 0; i < _dbus_string_get_length (&message->header); i++)
3704 _dbus_message_loader_get_buffer (loader, &buffer);
3705 _dbus_string_append_byte (buffer, data[i]);
3706 _dbus_message_loader_return_buffer (loader, buffer, 1);
3709 /* Write the body data one byte at a time */
3710 _dbus_string_get_const_data (&message->body, &data);
3711 for (i = 0; i < _dbus_string_get_length (&message->body); i++)
3715 _dbus_message_loader_get_buffer (loader, &buffer);
3716 _dbus_string_append_byte (buffer, data[i]);
3717 _dbus_message_loader_return_buffer (loader, buffer, 1);
3720 dbus_message_unref (message);
3722 /* Now pop back the message */
3723 if (_dbus_message_loader_get_is_corrupted (loader))
3724 _dbus_assert_not_reached ("message loader corrupted");
3726 message = _dbus_message_loader_pop_message (loader);
3728 _dbus_assert_not_reached ("received a NULL message");
3730 if (dbus_message_get_reply_serial (message) != 0x12345678)
3731 _dbus_assert_not_reached ("reply serial fields differ");
3733 message_iter_test (message);
3735 dbus_message_unref (message);
3736 _dbus_message_loader_unref (loader);
3738 /* Now load every message in test_data_dir if we have one */
3739 if (test_data_dir == NULL)
3742 return dbus_internal_do_not_use_foreach_message_file (test_data_dir,
3743 (DBusForeachMessageFileFunc)
3744 dbus_internal_do_not_use_try_message_file,
3748 #endif /* DBUS_BUILD_TESTS */