26 #include "dbus-internals.h" 27 #include "dbus-marshal-recursive.h" 28 #include "dbus-marshal-validate.h" 29 #include "dbus-marshal-byteswap.h" 30 #include "dbus-marshal-header.h" 31 #include "dbus-signature.h" 32 #include "dbus-message-private.h" 33 #include "dbus-object-tree.h" 34 #include "dbus-memory.h" 35 #include "dbus-list.h" 36 #include "dbus-threads-internal.h" 37 #ifdef HAVE_UNIX_FD_PASSING 38 #include "dbus-sysdeps.h" 39 #include "dbus-sysdeps-unix.h" 44 #define _DBUS_TYPE_IS_STRINGLIKE(type) \ 45 (type == DBUS_TYPE_STRING || type == DBUS_TYPE_SIGNATURE || \ 46 type == DBUS_TYPE_OBJECT_PATH) 48 static void dbus_message_finalize (
DBusMessage *message);
60 #ifdef DBUS_ENABLE_EMBEDDED_TESTS 62 _dbus_enable_message_cache (
void)
64 static int enabled = -1;
79 _dbus_warn (
"DBUS_MESSAGE_CACHE should be 0 or 1 if set, not '%s'",
88 # define _dbus_enable_message_cache() (TRUE) 91 #ifndef _dbus_message_trace_ref 98 static int enabled = -1;
100 _dbus_trace_ref (
"DBusMessage", message, old_refcount, new_refcount, why,
101 "DBUS_MESSAGE_TRACE", &enabled);
114 DBUS_MESSAGE_ITER_TYPE_READER = 3,
115 DBUS_MESSAGE_ITER_TYPE_WRITER = 7
148 dbus_uint32_t dummy3;
176 *type_str_p = &_dbus_empty_signature_str;
195 if (byte_order == DBUS_COMPILER_BYTE_ORDER)
198 _dbus_verbose (
"Swapping message into compiler byte order\n");
200 get_const_signature (&message->
header, &type_str, &type_pos);
204 DBUS_COMPILER_BYTE_ORDER,
209 DBUS_COMPILER_BYTE_ORDER);
218 #define ensure_byte_order(message) _dbus_message_byteswap (message) 238 *body = &message->
body;
256 #ifdef HAVE_UNIX_FD_PASSING 257 *fds = message->unix_fds;
258 *n_fds = message->n_unix_fds;
278 dbus_uint32_t serial)
280 _dbus_return_if_fail (message !=
NULL);
281 _dbus_return_if_fail (!message->
locked);
315 _dbus_string_get_length (&message->
header.
data) +
316 _dbus_string_get_length (&message->
body);
318 #ifdef HAVE_UNIX_FD_PASSING 319 message->unix_fd_counter_delta = message->n_unix_fds;
323 _dbus_verbose (
"message has size %ld\n",
332 #ifdef HAVE_UNIX_FD_PASSING 388 #ifdef HAVE_UNIX_FD_PASSING 412 _dbus_string_get_length (&message->
body));
464 const char *signature)
466 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
467 _dbus_return_val_if_fail (!message->
locked,
FALSE);
468 _dbus_return_val_if_fail (signature ==
NULL ||
469 _dbus_check_is_valid_signature (signature));
471 _dbus_return_val_if_fail (_dbus_string_get_length (&message->
body) == 0 ||
474 return set_or_delete_string_field (message,
528 #define MAX_MESSAGE_SIZE_TO_CACHE 10 * _DBUS_ONE_KILOBYTE 531 #define MAX_MESSAGE_CACHE_SIZE 5 535 static int message_cache_count = 0;
539 dbus_message_cache_shutdown (
void *data)
545 "before registering a shutdown function");
550 if (message_cache[i])
551 dbus_message_finalize (message_cache[i]);
556 message_cache_count = 0;
557 message_cache_shutdown_registered =
FALSE;
570 dbus_message_get_cached (
void)
586 if (message_cache_count == 0)
601 if (message_cache[i])
603 message = message_cache[i];
604 message_cache[i] =
NULL;
605 message_cache_count -= 1;
623 #ifdef HAVE_UNIX_FD_PASSING 625 close_unix_fds(
int *fds,
unsigned *n_fds)
635 for (i = 0; i < *n_fds; i++)
651 free_counter (
void *element,
658 #ifdef HAVE_UNIX_FD_PASSING 672 dbus_message_cache_or_finalize (
DBusMessage *message)
685 free_counter, message);
688 #ifdef HAVE_UNIX_FD_PASSING 689 close_unix_fds(message->unix_fds, &message->n_unix_fds);
699 "the first time we constructed a message");
702 if (!message_cache_shutdown_registered)
712 message_cache[i] =
NULL;
716 message_cache_shutdown_registered =
TRUE;
721 if (!_dbus_enable_message_cache ())
724 if ((_dbus_string_get_length (&message->
header.
data) +
725 _dbus_string_get_length (&message->
body)) >
734 while (message_cache[i] !=
NULL)
741 message_cache_count += 1;
743 #ifndef DBUS_DISABLE_CHECKS 753 dbus_message_finalize (message);
756 #if defined(DBUS_ENABLE_CHECKS) || defined(DBUS_ENABLE_ASSERT) 770 if (iter->
iter_type == DBUS_MESSAGE_ITER_TYPE_READER)
780 else if (iter->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER)
798 _dbus_warn_check_failed (
"dbus message iterator invalid because the message has been modified (or perhaps the iterator is just uninitialized)\n");
825 int spec_type, msg_type, i, j;
833 spec_type = first_arg_type;
839 DBUS_VA_COPY (copy_args, var_args);
845 if (msg_type != spec_type)
848 "Argument %d is specified to be of type \"%s\", but " 849 "is actually of type \"%s\"\n", i,
858 #ifdef HAVE_UNIX_FD_PASSING 862 pfd = va_arg (var_args,
int*);
870 "Message refers to file descriptor at index %i," 871 "but has only %i descriptors attached.\n",
883 "Platform does not support file desciptor passing.\n");
901 int spec_element_type;
906 spec_element_type = va_arg (var_args,
int);
909 if (spec_element_type != element_type)
912 "Argument %d is specified to be an array of \"%s\", but " 913 "is actually an array of \"%s\"\n",
925 n_elements_p = va_arg (var_args,
int*);
933 (
void *) ptr, n_elements_p);
935 else if (_DBUS_TYPE_IS_STRINGLIKE (spec_element_type))
941 str_array_p = va_arg (var_args,
char***);
942 n_elements_p = va_arg (var_args,
int*);
957 str_array =
dbus_new0 (
char*, n_elements + 1);
958 if (str_array ==
NULL)
960 _DBUS_SET_OOM (error);
968 while (j < n_elements)
975 if (str_array[j] ==
NULL)
978 _DBUS_SET_OOM (error);
992 *str_array_p = str_array;
993 *n_elements_p = n_elements;
995 #ifndef DBUS_DISABLE_CHECKS 998 _dbus_warn (
"you can't read arrays of container types (struct, variant, array) with %s for now\n",
999 _DBUS_FUNCTION_NAME);
1004 #ifndef DBUS_DISABLE_CHECKS 1007 _dbus_warn (
"you can only read arrays and basic types with %s for now\n",
1008 _DBUS_FUNCTION_NAME);
1016 spec_type = va_arg (var_args,
int);
1020 "Message has only %d arguments, but more were expected", i);
1034 spec_type = first_arg_type;
1041 #ifdef HAVE_UNIX_FD_PASSING 1044 pfd = va_arg (copy_args,
int *);
1060 int spec_element_type;
1062 spec_element_type = va_arg (copy_args,
int);
1067 va_arg (copy_args,
int *);
1069 else if (_DBUS_TYPE_IS_STRINGLIKE (spec_element_type))
1071 char ***str_array_p;
1073 str_array_p = va_arg (copy_args,
char ***);
1075 va_arg (copy_args,
int *);
1078 *str_array_p =
NULL;
1082 spec_type = va_arg (copy_args,
int);
1152 _dbus_return_val_if_fail (message !=
NULL, 0);
1167 dbus_uint32_t reply_serial)
1169 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
1170 _dbus_return_val_if_fail (!message->
locked,
FALSE);
1171 _dbus_return_val_if_fail (reply_serial != 0,
FALSE);
1188 dbus_uint32_t v_UINT32;
1190 _dbus_return_val_if_fail (message !=
NULL, 0);
1210 free_counter, message);
1216 #ifdef HAVE_UNIX_FD_PASSING 1217 close_unix_fds(message->unix_fds, &message->n_unix_fds);
1227 dbus_message_new_empty_header (
void)
1232 message = dbus_message_get_cached ();
1234 if (message !=
NULL)
1242 if (message ==
NULL)
1244 #ifndef DBUS_DISABLE_CHECKS 1248 #ifdef HAVE_UNIX_FD_PASSING 1249 message->unix_fds =
NULL;
1250 message->n_unix_fds_allocated = 0;
1256 _dbus_message_trace_ref (message, 0, 1,
"new_empty_header");
1259 #ifndef DBUS_DISABLE_CHECKS 1266 #ifdef HAVE_UNIX_FD_PASSING 1267 message->n_unix_fds = 0;
1268 message->n_unix_fds_allocated = 0;
1269 message->unix_fd_counter_delta = 0;
1318 message = dbus_message_new_empty_header ();
1319 if (message ==
NULL)
1323 DBUS_COMPILER_BYTE_ORDER,
1363 _dbus_return_val_if_fail (path !=
NULL,
NULL);
1364 _dbus_return_val_if_fail (method !=
NULL,
NULL);
1365 _dbus_return_val_if_fail (destination ==
NULL ||
1366 _dbus_check_is_valid_bus_name (destination),
NULL);
1367 _dbus_return_val_if_fail (_dbus_check_is_valid_path (path),
NULL);
1368 _dbus_return_val_if_fail (iface ==
NULL ||
1369 _dbus_check_is_valid_interface (iface),
NULL);
1370 _dbus_return_val_if_fail (_dbus_check_is_valid_member (method),
NULL);
1372 message = dbus_message_new_empty_header ();
1373 if (message ==
NULL)
1377 DBUS_COMPILER_BYTE_ORDER,
1379 destination, path, iface, method,
NULL))
1401 _dbus_return_val_if_fail (method_call !=
NULL,
NULL);
1407 message = dbus_message_new_empty_header ();
1408 if (message ==
NULL)
1412 DBUS_COMPILER_BYTE_ORDER,
1453 _dbus_return_val_if_fail (path !=
NULL,
NULL);
1454 _dbus_return_val_if_fail (iface !=
NULL,
NULL);
1455 _dbus_return_val_if_fail (name !=
NULL,
NULL);
1456 _dbus_return_val_if_fail (_dbus_check_is_valid_path (path),
NULL);
1457 _dbus_return_val_if_fail (_dbus_check_is_valid_interface (iface),
NULL);
1458 _dbus_return_val_if_fail (_dbus_check_is_valid_member (name),
NULL);
1460 message = dbus_message_new_empty_header ();
1461 if (message ==
NULL)
1465 DBUS_COMPILER_BYTE_ORDER,
1494 const char *error_name,
1495 const char *error_message)
1501 _dbus_return_val_if_fail (reply_to !=
NULL,
NULL);
1502 _dbus_return_val_if_fail (error_name !=
NULL,
NULL);
1503 _dbus_return_val_if_fail (_dbus_check_is_valid_error_name (error_name),
NULL);
1511 message = dbus_message_new_empty_header ();
1512 if (message ==
NULL)
1516 DBUS_COMPILER_BYTE_ORDER,
1533 if (error_message !=
NULL)
1566 const char *error_name,
1567 const char *error_format,
1574 _dbus_return_val_if_fail (reply_to !=
NULL,
NULL);
1575 _dbus_return_val_if_fail (error_name !=
NULL,
NULL);
1576 _dbus_return_val_if_fail (_dbus_check_is_valid_error_name (error_name),
NULL);
1581 va_start (args, error_format);
1585 _dbus_string_get_const_data (&str));
1614 _dbus_return_val_if_fail (message !=
NULL,
NULL);
1623 #ifndef DBUS_DISABLE_CHECKS 1634 _dbus_string_get_length (&message->
body)))
1645 #ifdef HAVE_UNIX_FD_PASSING 1646 retval->unix_fds =
dbus_new(
int, message->n_unix_fds);
1647 if (retval->unix_fds ==
NULL && message->n_unix_fds > 0)
1650 retval->n_unix_fds_allocated = message->n_unix_fds;
1652 for (retval->n_unix_fds = 0;
1653 retval->n_unix_fds < message->n_unix_fds;
1654 retval->n_unix_fds++)
1656 retval->unix_fds[retval->n_unix_fds] =
_dbus_dup(message->unix_fds[retval->n_unix_fds],
NULL);
1658 if (retval->unix_fds[retval->n_unix_fds] < 0)
1664 _dbus_message_trace_ref (retval, 0, 1,
"copy");
1671 #ifdef HAVE_UNIX_FD_PASSING 1672 close_unix_fds(retval->unix_fds, &retval->n_unix_fds);
1692 dbus_int32_t old_refcount;
1694 _dbus_return_val_if_fail (message !=
NULL,
NULL);
1700 _dbus_message_trace_ref (message, old_refcount, old_refcount + 1,
"ref");
1715 dbus_int32_t old_refcount;
1717 _dbus_return_if_fail (message !=
NULL);
1719 _dbus_return_if_fail (!message->
in_cache);
1725 _dbus_message_trace_ref (message, old_refcount, old_refcount - 1,
"unref");
1727 if (old_refcount == 1)
1730 dbus_message_cache_or_finalize (message);
1822 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
1824 va_start (var_args, first_arg_type);
1854 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
1856 type = first_arg_type;
1878 element_type = va_arg (var_args,
int);
1880 buf[0] = element_type;
1895 n_elements = va_arg (var_args,
int);
1905 else if (_DBUS_TYPE_IS_STRINGLIKE (element_type))
1907 const char ***value_p;
1912 value_p = va_arg (var_args,
const char***);
1913 n_elements = va_arg (var_args,
int);
1918 while (i < n_elements)
1931 _dbus_warn (
"arrays of %s can't be appended with %s for now\n",
1933 _DBUS_FUNCTION_NAME);
1940 #ifndef DBUS_DISABLE_CHECKS 1943 _dbus_warn (
"type %s isn't supported yet in %s\n",
1949 type = va_arg (var_args,
int);
2011 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
2012 _dbus_return_val_if_error_is_set (error,
FALSE);
2014 va_start (var_args, first_arg_type);
2039 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
2040 _dbus_return_val_if_error_is_set (error,
FALSE);
2047 _dbus_message_iter_init_common (
DBusMessage *message,
2065 4 *
sizeof (
void *) +
sizeof (dbus_uint32_t) + 9 *
sizeof (
int));
2108 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
2109 _dbus_return_val_if_fail (iter !=
NULL,
FALSE);
2111 get_const_signature (&message->
header, &type_str, &type_pos);
2113 _dbus_message_iter_init_common (message, real,
2114 DBUS_MESSAGE_ITER_TYPE_READER);
2136 _dbus_return_val_if_fail (_dbus_message_iter_check (real),
FALSE);
2137 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_READER,
FALSE);
2155 _dbus_return_val_if_fail (_dbus_message_iter_check (real),
FALSE);
2156 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_READER,
FALSE);
2181 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_READER,
FALSE);
2238 _dbus_return_if_fail (_dbus_message_iter_check (real));
2239 _dbus_return_if_fail (sub !=
NULL);
2265 _dbus_return_val_if_fail (_dbus_message_iter_check (real),
NULL);
2273 _dbus_string_get_const_data (sig) + start,
2335 _dbus_return_if_fail (_dbus_message_iter_check (real));
2336 _dbus_return_if_fail (value !=
NULL);
2340 #ifdef HAVE_UNIX_FD_PASSING 2348 *((
int*) value) = -1;
2354 *((
int*) value) = -1;
2382 _dbus_return_val_if_fail (_dbus_message_iter_check (real), 0);
2392 n_elements = total_len / alignment;
2423 _dbus_return_val_if_fail (_dbus_message_iter_check (real), 0);
2469 #ifndef DBUS_DISABLE_CHECKS 2472 _dbus_return_if_fail (_dbus_message_iter_check (real));
2473 _dbus_return_if_fail (value !=
NULL);
2499 _dbus_return_if_fail (message !=
NULL);
2500 _dbus_return_if_fail (iter !=
NULL);
2502 _dbus_message_iter_init_common (message, real,
2503 DBUS_MESSAGE_ITER_TYPE_WRITER);
2512 _dbus_string_get_length (&message->
body));
2528 int current_sig_pos;
2545 ¤t_sig, ¤t_sig_pos))
2552 current_len = _dbus_string_get_byte (current_sig, current_sig_pos);
2553 current_sig_pos += 1;
2581 str, _dbus_string_get_length (str));
2598 const char *v_STRING;
2615 v_STRING = _dbus_string_get_const_data (str);
2658 #ifndef DBUS_DISABLE_CHECKS 2662 if (!_dbus_message_iter_check (iter))
2675 #ifdef HAVE_UNIX_FD_PASSING 2685 if (m->n_unix_fds + n > m->n_unix_fds_allocated)
2691 k = (m->n_unix_fds + n) * 2;
2702 m->n_unix_fds_allocated = k;
2705 return m->unix_fds + m->n_unix_fds;
2736 _dbus_return_val_if_fail (_dbus_message_iter_append_check (real),
FALSE);
2737 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER,
FALSE);
2739 _dbus_return_val_if_fail (value !=
NULL,
FALSE);
2741 #ifndef DBUS_DISABLE_CHECKS 2744 const char *
const *string_p;
2749 _dbus_return_val_if_fail (_dbus_check_is_valid_utf8 (*string_p),
FALSE);
2754 _dbus_return_val_if_fail (_dbus_check_is_valid_path (*string_p),
FALSE);
2759 _dbus_return_val_if_fail (_dbus_check_is_valid_signature (*string_p),
FALSE);
2764 _dbus_return_val_if_fail (*bool_p == 0 || *bool_p == 1,
FALSE);
2774 if (!_dbus_message_iter_open_signature (real))
2779 #ifdef HAVE_UNIX_FD_PASSING 2784 if (!(fds = expand_fd_array(real->
message, 1)))
2791 u = real->
message->n_unix_fds;
2799 real->
message->n_unix_fds += 1;
2822 if (!_dbus_message_iter_close_signature (real))
2872 _dbus_return_val_if_fail (_dbus_message_iter_append_check (real),
FALSE);
2873 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER,
FALSE);
2876 _dbus_return_val_if_fail (value !=
NULL,
FALSE);
2877 _dbus_return_val_if_fail (n_elements >= 0,
FALSE);
2878 _dbus_return_val_if_fail (n_elements <=
2882 #ifndef DBUS_DISABLE_CHECKS 2888 for (i = 0; i < n_elements; i++)
2890 _dbus_return_val_if_fail ((*bools)[i] == 0 || (*bools)[i] == 1,
FALSE);
2924 const char *contained_signature,
2931 _dbus_return_val_if_fail (_dbus_message_iter_append_check (real),
FALSE);
2932 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER,
FALSE);
2934 _dbus_return_val_if_fail (sub !=
NULL,
FALSE);
2936 contained_signature ==
NULL) ||
2938 contained_signature ==
NULL) ||
2940 contained_signature !=
NULL) ||
2949 (contained_signature ==
NULL ||
2950 _dbus_check_is_valid_signature (contained_signature)),
2953 if (!_dbus_message_iter_open_signature (real))
2958 if (contained_signature !=
NULL)
2998 _dbus_return_val_if_fail (_dbus_message_iter_append_check (real),
FALSE);
2999 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER,
FALSE);
3000 _dbus_return_val_if_fail (_dbus_message_iter_append_check (real_sub),
FALSE);
3001 _dbus_return_val_if_fail (real_sub->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER,
FALSE);
3006 if (!_dbus_message_iter_close_signature (real))
3028 #ifndef DBUS_DISABLE_CHECKS 3031 _dbus_return_if_fail (_dbus_message_iter_append_check (real));
3032 _dbus_return_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER);
3033 _dbus_return_if_fail (_dbus_message_iter_append_check (real_sub));
3034 _dbus_return_if_fail (real_sub->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER);
3037 _dbus_message_iter_abandon_signature (real);
3060 _dbus_return_if_fail (message !=
NULL);
3061 _dbus_return_if_fail (!message->
locked);
3078 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3102 _dbus_return_if_fail (message !=
NULL);
3103 _dbus_return_if_fail (!message->
locked);
3120 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3141 const char *object_path)
3143 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3144 _dbus_return_val_if_fail (!message->
locked,
FALSE);
3145 _dbus_return_val_if_fail (object_path ==
NULL ||
3146 _dbus_check_is_valid_path (object_path),
3149 return set_or_delete_string_field (message,
3173 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3196 const char *msg_path;
3199 if (msg_path ==
NULL)
3210 if (strcmp (msg_path, path) == 0)
3242 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3243 _dbus_return_val_if_fail (path !=
NULL,
FALSE);
3274 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3275 _dbus_return_val_if_fail (!message->
locked,
FALSE);
3276 _dbus_return_val_if_fail (iface ==
NULL ||
3277 _dbus_check_is_valid_interface (iface),
3280 return set_or_delete_string_field (message,
3304 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3325 const char *msg_interface;
3328 if (msg_interface ==
NULL)
3339 if (strcmp (msg_interface, iface) == 0)
3362 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3363 _dbus_return_val_if_fail (!message->
locked,
FALSE);
3364 _dbus_return_val_if_fail (member ==
NULL ||
3365 _dbus_check_is_valid_member (member),
3368 return set_or_delete_string_field (message,
3390 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3411 const char *msg_member;
3414 if (msg_member ==
NULL)
3425 if (strcmp (msg_member, member) == 0)
3445 const char *error_name)
3447 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3448 _dbus_return_val_if_fail (!message->
locked,
FALSE);
3449 _dbus_return_val_if_fail (error_name ==
NULL ||
3450 _dbus_check_is_valid_error_name (error_name),
3453 return set_or_delete_string_field (message,
3474 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3499 const char *destination)
3501 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3502 _dbus_return_val_if_fail (!message->
locked,
FALSE);
3503 _dbus_return_val_if_fail (destination ==
NULL ||
3504 _dbus_check_is_valid_bus_name (destination),
3507 return set_or_delete_string_field (message,
3527 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3555 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3556 _dbus_return_val_if_fail (!message->
locked,
FALSE);
3557 _dbus_return_val_if_fail (sender ==
NULL ||
3558 _dbus_check_is_valid_bus_name (sender),
3561 return set_or_delete_string_field (message,
3587 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3621 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3623 get_const_signature (&message->
header, &type_str, &type_pos);
3625 return _dbus_string_get_const_data_len (type_str, type_pos, 0);
3629 _dbus_message_has_type_interface_member (
DBusMessage *message,
3649 if (n && strcmp (n, member) == 0)
3653 if (n ==
NULL || strcmp (n, iface) == 0)
3679 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3680 _dbus_return_val_if_fail (iface !=
NULL,
FALSE);
3681 _dbus_return_val_if_fail (method !=
NULL,
FALSE);
3686 return _dbus_message_has_type_interface_member (message,
3705 const char *signal_name)
3707 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3708 _dbus_return_val_if_fail (iface !=
NULL,
FALSE);
3709 _dbus_return_val_if_fail (signal_name !=
NULL,
FALSE);
3714 return _dbus_message_has_type_interface_member (message,
3716 iface, signal_name);
3731 const char *error_name)
3735 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3736 _dbus_return_val_if_fail (error_name !=
NULL,
FALSE);
3746 if (n && strcmp (n, error_name) == 0)
3768 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3769 _dbus_return_val_if_fail (name !=
NULL,
FALSE);
3776 if (s && strcmp (s, name) == 0)
3803 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3804 _dbus_return_val_if_fail (name !=
NULL,
FALSE);
3811 if (s && strcmp (s, name) == 0)
3828 const char *signature)
3832 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3833 _dbus_return_val_if_fail (signature !=
NULL,
FALSE);
3840 if (s && strcmp (s, signature) == 0)
3874 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3875 _dbus_return_val_if_error_is_set (error,
FALSE);
3886 str ?
"%s" :
NULL, str);
3900 #ifdef HAVE_UNIX_FD_PASSING 3903 return message->n_unix_fds > 0;
3927 #define INITIAL_LOADER_DATA_LEN 32 3968 #ifdef HAVE_UNIX_FD_PASSING 3969 loader->unix_fds =
NULL;
3970 loader->n_unix_fds = loader->n_unix_fds_allocated = 0;
3971 loader->unix_fds_outstanding =
FALSE;
4003 #ifdef HAVE_UNIX_FD_PASSING 4004 close_unix_fds(loader->unix_fds, &loader->n_unix_fds);
4040 *buffer = &loader->
data;
4077 unsigned *max_n_fds)
4079 #ifdef HAVE_UNIX_FD_PASSING 4098 loader->unix_fds = a;
4102 *fds = loader->unix_fds + loader->n_unix_fds;
4103 *max_n_fds = loader->n_unix_fds_allocated - loader->n_unix_fds;
4105 loader->unix_fds_outstanding =
TRUE;
4128 #ifdef HAVE_UNIX_FD_PASSING 4130 _dbus_assert(loader->unix_fds + loader->n_unix_fds == fds);
4131 _dbus_assert(loader->n_unix_fds + n_fds <= loader->n_unix_fds_allocated);
4133 loader->n_unix_fds += n_fds;
4134 loader->unix_fds_outstanding =
FALSE;
4136 if (n_fds && loader->unix_fds_change)
4137 loader->unix_fds_change (loader->unix_fds_change_data);
4173 int fields_array_len,
4182 dbus_uint32_t n_unix_fds = 0;
4184 mode = DBUS_VALIDATION_MODE_DATA_IS_UNTRUSTED;
4194 _dbus_assert ((header_len + body_len) <= _dbus_string_get_length (&loader->
data));
4204 _dbus_string_get_length (&loader->
data)))
4206 _dbus_verbose (
"Failed to load header for new message code %d\n", validity);
4225 if (mode != DBUS_VALIDATION_MODE_WE_TRUST_THIS_DATA_ABSOLUTELY)
4227 get_const_signature (&message->
header, &type_str, &type_pos);
4241 _dbus_verbose (
"Failed to validate message body code %d\n", validity);
4256 #ifdef HAVE_UNIX_FD_PASSING 4258 if (n_unix_fds > loader->n_unix_fds)
4260 _dbus_verbose(
"Message contains references to more unix fds than were sent %u != %u\n",
4261 n_unix_fds, loader->n_unix_fds);
4274 message->unix_fds =
_dbus_memdup(loader->unix_fds, n_unix_fds *
sizeof(message->unix_fds[0]));
4275 if (message->unix_fds ==
NULL)
4277 _dbus_verbose (
"Failed to allocate file descriptor array\n");
4282 message->n_unix_fds_allocated = message->n_unix_fds = n_unix_fds;
4283 loader->n_unix_fds -= n_unix_fds;
4284 memmove (loader->unix_fds, loader->unix_fds + n_unix_fds, loader->n_unix_fds * sizeof (loader->unix_fds[0]));
4286 if (loader->unix_fds_change)
4287 loader->unix_fds_change (loader->unix_fds_change_data);
4290 message->unix_fds =
NULL;
4296 _dbus_verbose (
"Hmm, message claims to come with file descriptors " 4297 "but that's not supported on our platform, disconnecting.\n");
4310 _dbus_verbose (
"Failed to append new message to loader queue\n");
4317 (header_len + body_len));
4321 _dbus_verbose (
"Failed to move body into new message\n");
4334 _dbus_verbose (
"Loaded message %p\n", message);
4381 int byte_order, fields_array_len, header_len, body_len;
4390 _dbus_string_get_length (&loader->
data)))
4396 message = dbus_message_new_empty_header ();
4397 if (message ==
NULL)
4400 if (!load_message (loader, message,
4401 byte_order, fields_array_len,
4402 header_len, body_len))
4416 _dbus_verbose (
"Initial peek at header says we don't have a whole message yet, or data broken with invalid code %d\n",
4531 _dbus_verbose (
"clamping requested max message size %ld to %d\n",
4562 _dbus_verbose (
"clamping requested max message unix_fds %ld to %d\n",
4589 #ifdef HAVE_UNIX_FD_PASSING 4590 return loader->n_unix_fds;
4606 void (* callback) (
void *),
4609 #ifdef HAVE_UNIX_FD_PASSING 4610 loader->unix_fds_change = callback;
4611 loader->unix_fds_change_data = data;
4653 _dbus_return_if_fail (*slot_p >= 0);
4681 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
4682 _dbus_return_val_if_fail (slot >= 0,
FALSE);
4686 slot, data, free_data_func,
4687 &old_free_func, &old_data);
4693 (* old_free_func) (old_data);
4713 _dbus_return_val_if_fail (message !=
NULL,
NULL);
4738 if (strcmp (type_str,
"method_call") == 0)
4740 if (strcmp (type_str,
"method_return") == 0)
4742 else if (strcmp (type_str,
"signal") == 0)
4744 else if (strcmp (type_str,
"error") == 0)
4769 return "method_call";
4771 return "method_return";
4795 char **marshalled_data_p,
4801 _dbus_return_val_if_fail (msg !=
NULL,
FALSE);
4802 _dbus_return_val_if_fail (marshalled_data_p !=
NULL,
FALSE);
4803 _dbus_return_val_if_fail (len_p !=
NULL,
FALSE);
4809 was_locked = msg->
locked;
4817 *len_p = _dbus_string_get_length (&tmp);
4822 *len_p = _dbus_string_get_length (&tmp);
4864 _dbus_return_val_if_fail (str !=
NULL,
NULL);
4899 _DBUS_SET_OOM (error);
4921 int byte_order, fields_array_len, header_len, body_len;
4935 &validity, &byte_order,
4945 _dbus_assert (have_message || (header_len + body_len) > len);
4946 (void) have_message;
4947 return header_len + body_len;
4980 _dbus_return_if_fail (message !=
NULL);
4981 _dbus_return_if_fail (!message->
locked);
4997 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
dbus_bool_t dbus_type_is_fixed(int typecode)
Tells you whether values of this type can change length if you set them to some other value...
void _dbus_type_reader_read_fixed_multi(const DBusTypeReader *reader, void *value, int *n_elements)
Reads a block of fixed-length basic values, from the current point in an array to the end of the arra...
DBusValidity _dbus_validate_body_with_reason(const DBusString *expected_signature, int expected_signature_start, int byte_order, int *bytes_remaining, const DBusString *value_str, int value_pos, int len)
Verifies that the range of value_str from value_pos to value_end is a legitimate value of type expect...
int dbus_message_type_from_string(const char *type_str)
Utility function to convert a machine-readable (not translated) string into a D-Bus message type...
DBusMessage * dbus_message_ref(DBusMessage *message)
Increments the reference count of a DBusMessage.
void dbus_message_lock(DBusMessage *message)
Locks a message.
const char * message
public error message field
dbus_bool_t dbus_message_has_path(DBusMessage *message, const char *path)
Checks if the message has a particular object path.
dbus_uint32_t changed_stamp
Incremented when iterators are invalidated.
#define NULL
A null pointer, defined appropriately for C or C++.
dbus_bool_t dbus_message_is_method_call(DBusMessage *message, const char *iface, const char *method)
Checks whether the message is a method call with the given interface and member fields.
dbus_bool_t _dbus_header_load(DBusHeader *header, DBusValidationMode mode, DBusValidity *validity, int byte_order, int fields_array_len, int header_len, int body_len, const DBusString *str, int start, int len)
Creates a message header from potentially-untrusted data.
void(* DBusFreeFunction)(void *memory)
The type of a function which frees a block of memory.
long _dbus_message_loader_get_max_message_size(DBusMessageLoader *loader)
Gets the maximum allowed message size in bytes.
void dbus_message_set_no_reply(DBusMessage *message, dbus_bool_t no_reply)
Sets a flag indicating that the message does not want a reply; if this flag is set, the other end of the connection may (but is not required to) optimize by not sending method return or error replies.
void _dbus_message_loader_putback_message_link(DBusMessageLoader *loader, DBusList *link)
Returns a popped message link, used to undo a pop.
dbus_bool_t _dbus_header_copy(const DBusHeader *header, DBusHeader *dest)
Initializes dest with a copy of the given header.
int dbus_message_iter_get_arg_type(DBusMessageIter *iter)
Returns the argument type of the argument that the message iterator points to.
dbus_uint32_t sig_refcount
depth of open_signature()
void _dbus_message_loader_return_buffer(DBusMessageLoader *loader, DBusString *buffer)
Returns a buffer obtained from _dbus_message_loader_get_buffer(), indicating to the loader how many b...
void _dbus_type_writer_remove_types(DBusTypeWriter *writer)
Removes type string from the writer.
void * dbus_realloc(void *memory, size_t bytes)
Resizes a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
void _dbus_message_loader_return_unix_fds(DBusMessageLoader *loader, int *fds, unsigned n_fds)
Returns a buffer obtained from _dbus_message_loader_get_unix_fds().
dbus_uint32_t dbus_message_get_serial(DBusMessage *message)
Returns the serial of a message or 0 if none has been specified.
DBusList * messages
Complete messages.
The type writer is an iterator for writing to a block of values.
void dbus_message_iter_recurse(DBusMessageIter *iter, DBusMessageIter *sub)
Recurses into a container value when reading values from a message, initializing a sub-iterator to us...
void _dbus_type_reader_recurse(DBusTypeReader *reader, DBusTypeReader *sub)
Initialize a new reader pointing to the first type and corresponding value that's a child of the curr...
DBusMessage * _dbus_message_loader_pop_message(DBusMessageLoader *loader)
Pops a loaded message (passing ownership of the message to the caller).
DBusList * _dbus_list_find_last(DBusList **list, void *data)
Finds a value in the list.
dbus_bool_t dbus_message_set_interface(DBusMessage *message, const char *iface)
Sets the interface this message is being sent to (for DBUS_MESSAGE_TYPE_METHOD_CALL) or the interface...
#define DBUS_ERROR_NOT_SUPPORTED
Requested operation isn't supported (like ENOSYS on UNIX).
#define dbus_new(type, count)
Safe macro for using dbus_malloc().
void dbus_message_free_data_slot(dbus_int32_t *slot_p)
Deallocates a global ID for message data slots.
#define DBUS_HEADER_FIELD_SIGNATURE
Header field code for the type signature of a message.
const char * dbus_message_get_error_name(DBusMessage *message)
Gets the error name (DBUS_MESSAGE_TYPE_ERROR only) or NULL if none.
dbus_bool_t dbus_message_iter_close_container(DBusMessageIter *iter, DBusMessageIter *sub)
Closes a container-typed value appended to the message; may write out more information to the message...
dbus_bool_t dbus_message_is_error(DBusMessage *message, const char *error_name)
Checks whether the message is an error reply with the given error name.
void _dbus_list_remove_link(DBusList **list, DBusList *link)
Removes a link from the list.
#define DBUS_TYPE_STRUCT
STRUCT and DICT_ENTRY are sort of special since their codes can't appear in a type string...
#define DBUS_TYPE_DICT_ENTRY
Type code used to represent a dict entry; however, this type code does not appear in type signatures...
const char * dbus_message_get_sender(DBusMessage *message)
Gets the unique name of the connection which originated this message, or NULL if unknown or inapplica...
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_message_iter_get_args_valist(DBusMessageIter *iter, DBusError *error, int first_arg_type, va_list var_args)
Implementation of the varargs arg-getting functions.
#define DBUS_TYPE_STRING
Type code marking a UTF-8 encoded, nul-terminated Unicode string.
DBusString body
Body network data.
dbus_uint32_t _dbus_header_get_serial(DBusHeader *header)
See dbus_message_get_serial()
dbus_bool_t _dbus_header_get_flag(DBusHeader *header, dbus_uint32_t flag)
Gets a message flag bit, returning TRUE if the bit is set.
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
#define DBUS_HEADER_FLAG_NO_REPLY_EXPECTED
If set, this flag means that the sender of a message does not care about getting a reply...
void _dbus_list_append_link(DBusList **list, DBusList *link)
Appends a link to the list.
Internals of DBusCounter.
dbus_bool_t dbus_message_allocate_data_slot(dbus_int32_t *slot_p)
Allocates an integer ID to be used for storing application-specific data on any DBusMessage.
void * data
Data stored at this element.
#define MAX_MESSAGE_CACHE_SIZE
Avoid caching too many messages.
DBusMessage * dbus_message_new(int message_type)
Constructs a new message of the given message type.
#define DBUS_ERROR_INCONSISTENT_MESSAGE
The message meta data does not match the payload.
dbus_bool_t _dbus_header_init(DBusHeader *header)
Initializes a header, but doesn't prepare it for use; to make the header valid, you have to call _dbu...
void _dbus_warn_check_failed(const char *format,...)
Prints a "critical" warning to stderr when an assertion fails; differs from _dbus_warn primarily in t...
const char * dbus_message_get_signature(DBusMessage *message)
Gets the type signature of the message, i.e.
void dbus_message_iter_init_append(DBusMessage *message, DBusMessageIter *iter)
Initializes a DBusMessageIter for appending arguments to the end of a message.
void dbus_error_free(DBusError *error)
Frees an error that's been set (or just initialized), then reinitializes the error as in dbus_error_i...
void dbus_message_set_auto_start(DBusMessage *message, dbus_bool_t auto_start)
Sets a flag indicating that an owner for the destination name will be automatically started before th...
union DBusMessageRealIter::@6 u
the type writer or reader that does all the work
Layout of a DBusMessageIter on the stack in dbus 1.10.0.
dbus_bool_t dbus_message_get_allow_interactive_authorization(DBusMessage *message)
Returns whether the flag controlled by dbus_message_set_allow_interactive_authorization() has been se...
void _dbus_message_loader_unref(DBusMessageLoader *loader)
Decrements the reference count of the loader and finalizes the loader when the count reaches zero...
DBusCounter * _dbus_counter_ref(DBusCounter *counter)
Increments refcount of the counter.
dbus_bool_t dbus_message_has_interface(DBusMessage *message, const char *iface)
Checks if the message has an interface.
DBusValidity _dbus_message_loader_get_corruption_reason(DBusMessageLoader *loader)
Checks what kind of bad data confused the loader.
dbus_bool_t _dbus_type_writer_write_basic(DBusTypeWriter *writer, int type, const void *value)
Writes out a basic type.
#define DBUS_MESSAGE_TYPE_ERROR
Message type of an error reply message, see dbus_message_get_type()
DBusList * _dbus_list_alloc_link(void *data)
Allocates a linked list node.
#define DBUS_MAXIMUM_MESSAGE_UNIX_FDS
The maximum total number of unix fds in a message.
const char * dbus_message_get_path(DBusMessage *message)
Gets the object path this message is being sent to (for DBUS_MESSAGE_TYPE_METHOD_CALL) or being emitt...
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
#define DBUS_MESSAGE_TYPE_METHOD_RETURN
Message type of a method return message, see dbus_message_get_type()
DBusMessage * dbus_message_new_signal(const char *path, const char *iface, const char *name)
Constructs a new message representing a signal emission.
dbus_bool_t _dbus_string_append_printf_valist(DBusString *str, const char *format, va_list args)
Appends a printf-style formatted string to the DBusString.
int _dbus_dup(int fd, DBusError *error)
Duplicates a file descriptor.
DBusTypeReader reader
reader
DBusValidationMode
This is used rather than a bool for high visibility.
dbus_bool_t dbus_message_iter_has_next(DBusMessageIter *iter)
Checks if an iterator has any more fields.
DBusMessage * message
Message used.
dbus_bool_t _dbus_string_copy(const DBusString *source, int start, DBusString *dest, int insert_at)
Like _dbus_string_move(), but does not delete the section of the source string that's copied to the d...
#define DBUS_HEADER_FIELD_INTERFACE
Header field code for the interface containing a member (method or signal).
#define DBUS_DICT_ENTRY_BEGIN_CHAR
Code marking the start of a dict entry type in a type signature.
DBusList * _dbus_list_pop_first_link(DBusList **list)
Removes the first link in the list and returns it.
dbus_bool_t dbus_message_has_member(DBusMessage *message, const char *member)
Checks if the message has an interface member.
DBusValidity
This is primarily used in unit testing, so we can verify that each invalid message is invalid for the...
DBusMessageIter struct; contains no public fields.
dbus_bool_t dbus_message_iter_init(DBusMessage *message, DBusMessageIter *iter)
Initializes a DBusMessageIter for reading the arguments of the message passed in. ...
dbus_bool_t _dbus_message_add_counter(DBusMessage *message, DBusCounter *counter)
Adds a counter to be incremented immediately with the size/unix fds of this message, and decremented by the size/unix fds of this message when this message if finalized.
const char * dbus_message_get_destination(DBusMessage *message)
Gets the destination of a message or NULL if there is none set.
void _dbus_message_add_counter_link(DBusMessage *message, DBusList *link)
Adds a counter to be incremented immediately with the size/unix fds of this message, and decremented by the size/unix fds of this message when this message if finalized.
#define DBUS_TYPE_ARRAY
Type code marking a D-Bus array type.
DBusString * type_str
where to write typecodes (or read type expectations)
dbus_bool_t dbus_message_iter_append_fixed_array(DBusMessageIter *iter, int element_type, const void *value, int n_elements)
Appends a block of fixed-length values to an array.
dbus_bool_t dbus_message_set_error_name(DBusMessage *message, const char *error_name)
Sets the name of the error (DBUS_MESSAGE_TYPE_ERROR).
const char * dbus_message_get_member(DBusMessage *message)
Gets the interface member being invoked (DBUS_MESSAGE_TYPE_METHOD_CALL) or emitted (DBUS_MESSAGE_TYPE...
dbus_bool_t _dbus_list_remove_last(DBusList **list, void *data)
Removes a value from the list.
Internals of DBusMessage.
Internals of DBusMessageIter.
#define dbus_new0(type, count)
Safe macro for using dbus_malloc0().
dbus_uint32_t changed_stamp
stamp to detect invalid iters
void _dbus_type_writer_init_types_delayed(DBusTypeWriter *writer, int byte_order, DBusString *value_str, int value_pos)
Initialize a write iterator, with the signature to be provided later.
dbus_bool_t _dbus_string_compact(DBusString *str, int max_waste)
Compacts the string to avoid wasted memory.
int _dbus_header_get_message_type(DBusHeader *header)
Gets the type of the message.
#define DBUS_HEADER_FIELD_ERROR_NAME
Header field code for an error name (found in DBUS_MESSAGE_TYPE_ERROR messages).
#define DBUS_MINIMUM_HEADER_SIZE
The smallest header size that can occur.
dbus_bool_t _dbus_type_writer_unrecurse(DBusTypeWriter *writer, DBusTypeWriter *sub)
Closes a container created by _dbus_type_writer_recurse() and writes any additional information to th...
dbus_bool_t dbus_type_is_basic(int typecode)
A "basic type" is a somewhat arbitrary concept, but the intent is to include those types that are ful...
void _dbus_message_loader_set_max_message_size(DBusMessageLoader *loader, long size)
Sets the maximum size message we allow.
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
void _dbus_string_init_const(DBusString *str, const char *value)
Initializes a constant string.
DBusHeader header
Header network data and associated cache.
dbus_bool_t dbus_message_set_sender(DBusMessage *message, const char *sender)
Sets the message sender.
dbus_bool_t dbus_message_is_signal(DBusMessage *message, const char *iface, const char *signal_name)
Checks whether the message is a signal with the given interface and member fields.
DBusString data
Buffered data.
void _dbus_type_reader_read_basic(const DBusTypeReader *reader, void *value)
Reads a basic-typed value, as with _dbus_marshal_read_basic().
unsigned int locked
Message being sent, no modifications allowed.
#define ensure_byte_order(message)
byte-swap the message if it doesn't match our byte order.
DBusMessageLoader * _dbus_message_loader_ref(DBusMessageLoader *loader)
Increments the reference count of the loader.
dbus_bool_t _dbus_header_get_field_basic(DBusHeader *header, int field, int type, void *value)
Gets the value of a field with basic type.
dbus_bool_t dbus_message_get_path_decomposed(DBusMessage *message, char ***path)
Gets the object path this message is being sent to (for DBUS_MESSAGE_TYPE_METHOD_CALL) or being emitt...
can't determine validity due to OOM
void _dbus_warn(const char *format,...)
Prints a warning message to stderr.
void _dbus_string_delete(DBusString *str, int start, int len)
Deletes a segment of a DBusString with length len starting at start.
dbus_bool_t _dbus_string_init_preallocated(DBusString *str, int allocate_size)
Initializes a string that can be up to the given allocation size before it has to realloc...
void _dbus_counter_unref(DBusCounter *counter)
Decrements refcount of the counter and possibly finalizes the counter.
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
void _dbus_message_remove_counter(DBusMessage *message, DBusCounter *counter)
Removes a counter tracking the size/unix fds of this message, and decrements the counter by the size/...
dbus_bool_t _dbus_list_append(DBusList **list, void *data)
Appends a value to the list.
dbus_bool_t _dbus_decompose_path(const char *data, int len, char ***path, int *path_len)
Decompose an object path.
void * _dbus_memdup(const void *mem, size_t n_bytes)
Duplicates a block of memory.
dbus_bool_t _dbus_data_slot_list_set(DBusDataSlotAllocator *allocator, DBusDataSlotList *list, int slot, void *data, DBusFreeFunction free_data_func, DBusFreeFunction *old_free_func, void **old_data)
Stores a pointer in the data slot list, along with an optional function to be used for freeing the da...
dbus_bool_t dbus_message_set_path(DBusMessage *message, const char *object_path)
Sets the object path this message is being sent to (for DBUS_MESSAGE_TYPE_METHOD_CALL) or the one a s...
void _dbus_list_foreach(DBusList **list, DBusForeachFunction function, void *data)
Calls the given function for each element in the list.
long max_message_size
Maximum size of a message.
void _dbus_counter_adjust_unix_fd(DBusCounter *counter, long delta)
Adjusts the value of the unix fd counter by the given delta which may be positive or negative...
dbus_bool_t _dbus_type_reader_next(DBusTypeReader *reader)
Skip to the next value on this "level".
DBusList * counters
0-N DBusCounter used to track message size/unix fds.
DBusMessageLoader * _dbus_message_loader_new(void)
Creates a new message loader.
long size_counter_delta
Size we incremented the size counters by.
#define CHANGED_STAMP_BITS
How many bits are in the changed_stamp used to validate iterators.
void _dbus_header_byteswap(DBusHeader *header, int new_order)
Swaps the header into the given order if required.
dbus_bool_t _dbus_header_have_message_untrusted(int max_message_length, DBusValidity *validity, int *byte_order, int *fields_array_len, int *header_len, int *body_len, const DBusString *str, int start, int len)
Given data long enough to contain the length of the message body and the fields array, check whether the data is long enough to contain the entire message (assuming the claimed lengths are accurate).
#define DBUS_MESSAGE_TYPE_METHOD_CALL
Message type of a method call message, see dbus_message_get_type()
#define DBUS_HEADER_FIELD_UNIX_FDS
Header field code for the number of unix file descriptors associated with this message.
int _dbus_current_generation
_dbus_current_generation is used to track each time that dbus_shutdown() is called, so we can reinit things after it's been called.
dbus_bool_t dbus_message_get_args(DBusMessage *message, DBusError *error, int first_arg_type,...)
Gets arguments from a message given a variable argument list.
Object representing an exception.
unsigned int in_cache
Has been "freed" since it's in the cache (this is a debug feature)
int dbus_message_iter_get_element_count(DBusMessageIter *iter)
Returns the number of elements in the array-typed value pointed to by the iterator.
void * _dbus_list_pop_first(DBusList **list)
Removes the first value in the list and returns it.
#define DBUS_TYPE_SIGNATURE
Type code marking a D-Bus type signature.
void _dbus_message_loader_set_pending_fds_function(DBusMessageLoader *loader, void(*callback)(void *), void *data)
Register a function to be called whenever the number of pending file descriptors in the loader change...
dbus_bool_t dbus_message_append_args(DBusMessage *message, int first_arg_type,...)
Appends fields to a message given a variable argument list.
#define DBUS_MESSAGE_TYPE_SIGNAL
Message type of a signal message, see dbus_message_get_type()
void dbus_set_error(DBusError *error, const char *name, const char *format,...)
Assigns an error name and message to a DBusError.
dbus_uint32_t dbus_message_get_reply_serial(DBusMessage *message)
Returns the serial that the message is a reply to or 0 if none.
#define INITIAL_LOADER_DATA_LEN
The initial buffer size of the message loader.
dbus_bool_t dbus_message_has_signature(DBusMessage *message, const char *signature)
Checks whether the message has the given signature; see dbus_message_get_signature() for more details...
void _dbus_data_slot_list_clear(DBusDataSlotList *list)
Frees all data slots contained in the list, calling application-provided free functions if they exist...
dbus_bool_t _dbus_message_loader_get_is_corrupted(DBusMessageLoader *loader)
Checks whether the loader is confused due to bad data.
#define DBUS_TYPE_VARIANT
Type code marking a D-Bus variant type.
#define DBUS_TYPE_UINT32
Type code marking a 32-bit unsigned integer.
void _dbus_header_reinit(DBusHeader *header)
Re-initializes a header that was previously initialized and never freed.
DBusMessage * dbus_message_new_method_call(const char *destination, const char *path, const char *iface, const char *method)
Constructs a new message to invoke a method on a remote object.
#define DBUS_HEADER_FIELD_DESTINATION
Header field code for the destination bus name of a message.
dbus_uint32_t byte_order
byte order of the block
dbus_bool_t _dbus_header_delete_field(DBusHeader *header, int field)
Deletes a field, if it exists.
dbus_bool_t dbus_message_has_destination(DBusMessage *message, const char *name)
Checks whether the message was sent to the given name.
#define DBUS_MESSAGE_TYPE_INVALID
This value is never a valid message type, see dbus_message_get_type()
#define DBUS_HEADER_FLAG_ALLOW_INTERACTIVE_AUTHORIZATION
If set on a method call, this flag means that the caller is prepared to wait for interactive authoriz...
dbus_bool_t dbus_message_get_auto_start(DBusMessage *message)
Returns TRUE if the message will cause an owner for destination name to be auto-started.
dbus_uint32_t byte_order
byte order to write values with
#define _DBUS_UNLOCK(name)
Unlocks a global lock.
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init().
The type reader is an iterator for reading values from a block of values.
void * _dbus_data_slot_list_get(DBusDataSlotAllocator *allocator, DBusDataSlotList *list, int slot)
Retrieves data previously set with _dbus_data_slot_list_set_data().
long _dbus_message_loader_get_max_message_unix_fds(DBusMessageLoader *loader)
Gets the maximum allowed number of unix fds per message.
#define TRUE
Expands to "1".
dbus_bool_t dbus_message_marshal(DBusMessage *msg, char **marshalled_data_p, int *len_p)
Turn a DBusMessage into the marshalled form as described in the D-Bus specification.
dbus_bool_t _dbus_header_set_field_basic(DBusHeader *header, int field, int type, const void *value)
Sets the value of a field with basic type.
void _dbus_data_slot_list_init(DBusDataSlotList *list)
Initializes a slot list.
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
DBusMessage * dbus_message_copy(const DBusMessage *message)
Creates a new message that is an exact replica of the message specified, except that its refcount is ...
int dbus_message_iter_get_element_type(DBusMessageIter *iter)
Returns the element type of the array that the message iterator points to.
void _dbus_message_get_network_data(DBusMessage *message, const DBusString **header, const DBusString **body)
Gets the data to be sent over the network for this message.
#define DBUS_HEADER_FIELD_MEMBER
Header field code for a member (method or signal).
long max_message_unix_fds
Maximum unix fds in a message.
unsigned int corrupted
We got broken data, and are no longer working.
dbus_bool_t dbus_message_get_args_valist(DBusMessage *message, DBusError *error, int first_arg_type, va_list var_args)
Like dbus_message_get_args but takes a va_list for use by language bindings.
#define DBUS_HEADER_FIELD_SENDER
Header field code for the sender of a message; usually initialized by the message bus...
void _dbus_type_writer_add_types(DBusTypeWriter *writer, DBusString *type_str, int type_pos)
Adds type string to the writer, if it had none.
#define DBUS_TYPE_OBJECT_PATH
Type code marking a D-Bus object path.
dbus_bool_t dbus_set_error_from_message(DBusError *error, DBusMessage *message)
Sets a DBusError based on the contents of the given message.
DBusMessage * dbus_message_demarshal(const char *str, int len, DBusError *error)
Demarshal a D-Bus message from the format described in the D-Bus specification.
void dbus_message_iter_get_fixed_array(DBusMessageIter *iter, void *value, int *n_elements)
Reads a block of fixed-length values from the message iterator.
#define DBUS_TYPE_UNIX_FD
Type code marking a unix file descriptor.
dbus_bool_t _dbus_header_create(DBusHeader *header, int byte_order, int message_type, const char *destination, const char *path, const char *interface, const char *member, const char *error_name)
Fills in the primary fields of the header, so the header is ready for use.
const char * dbus_message_get_interface(DBusMessage *message)
Gets the interface this message is being sent to (for DBUS_MESSAGE_TYPE_METHOD_CALL) or being emitted...
An allocator that tracks a set of slot IDs.
#define DBUS_TYPE_INVALID
Type code that is never equal to a legitimate type code.
dbus_bool_t dbus_message_set_reply_serial(DBusMessage *message, dbus_uint32_t reply_serial)
Sets the reply serial of a message (the serial of the message this is a reply to).
void _dbus_counter_notify(DBusCounter *counter)
Calls the notify function from _dbus_counter_set_notify(), if that function has been specified and th...
dbus_bool_t dbus_message_has_sender(DBusMessage *message, const char *name)
Checks whether the message has the given unique name as its sender.
dbus_bool_t dbus_message_iter_next(DBusMessageIter *iter)
Moves the iterator to the next field, if any.
_DBUS_STRING_DEFINE_STATIC(_dbus_empty_signature_str,"")
An static string representing an empty signature.
void dbus_message_iter_get_basic(DBusMessageIter *iter, void *value)
Reads a basic-typed value from the message iterator.
void * dbus_message_get_data(DBusMessage *message, dbus_int32_t slot)
Retrieves data previously set with dbus_message_set_data().
void _dbus_type_reader_init(DBusTypeReader *reader, int byte_order, const DBusString *type_str, int type_pos, const DBusString *value_str, int value_pos)
Initializes a type reader.
void _dbus_header_free(DBusHeader *header)
Frees a header.
DBusList * _dbus_message_loader_pop_message_link(DBusMessageLoader *loader)
Pops a loaded message inside a list link (passing ownership of the message and link to the caller)...
#define DBUS_MAXIMUM_ARRAY_LENGTH
Max length of a marshaled array in bytes (64M, 2^26) We use signed int for lengths so must be INT_MAX...
dbus_bool_t dbus_message_set_destination(DBusMessage *message, const char *destination)
Sets the message's destination.
void dbus_error_init(DBusError *error)
Initializes a DBusError structure.
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
DBusAtomic refcount
Reference count.
dbus_bool_t dbus_message_get_no_reply(DBusMessage *message)
Returns TRUE if the message does not expect a reply.
dbus_bool_t _dbus_message_loader_get_unix_fds(DBusMessageLoader *loader, int **fds, unsigned *max_n_fds)
Gets the buffer to use for reading unix fds from the network.
void dbus_free_string_array(char **str_array)
Frees a NULL-terminated array of strings.
#define DBUS_TYPE_BOOLEAN
Type code marking a boolean.
void _dbus_message_loader_get_buffer(DBusMessageLoader *loader, DBusString **buffer)
Gets the buffer to use for reading data from the network.
dbus_bool_t _dbus_string_append_len(DBusString *str, const char *buffer, int len)
Appends block of bytes with the given length to a DBusString.
dbus_uint32_t iter_type
whether this is a reader or writer iter
void _dbus_header_set_serial(DBusHeader *header, dbus_uint32_t serial)
Sets the serial number of a header.
int _dbus_type_reader_get_element_type(const DBusTypeReader *reader)
Gets the type of an element of the array the reader is currently pointing to.
char _dbus_header_get_byte_order(const DBusHeader *header)
Returns the header's byte order.
dbus_bool_t dbus_message_iter_open_container(DBusMessageIter *iter, int type, const char *contained_signature, DBusMessageIter *sub)
Appends a container-typed value to the message; you are required to append the contents of the contai...
dbus_bool_t _dbus_type_reader_has_next(const DBusTypeReader *reader)
Check whether there's another value on this "level".
A simple value union that lets you access bytes as if they were various types; useful when dealing wi...
dbus_uint32_t container_type
what are we inside? (e.g.
int _dbus_type_reader_get_array_length(const DBusTypeReader *reader)
Returns the number of bytes in the array.
dbus_bool_t _dbus_header_get_field_raw(DBusHeader *header, int field, const DBusString **str, int *pos)
Gets the raw marshaled data for a field.
dbus_bool_t dbus_message_iter_append_basic(DBusMessageIter *iter, int type, const void *value)
Appends a basic-typed value to the message.
dbus_bool_t _dbus_close(int fd, DBusError *error)
Closes a file descriptor.
int dbus_message_iter_get_array_len(DBusMessageIter *iter)
Returns the number of bytes in the array as marshaled in the wire protocol.
void(* DBusForeachFunction)(void *element, void *data)
Used to iterate over each item in a collection, such as a DBusList.
int _dbus_type_reader_get_current_type(const DBusTypeReader *reader)
Gets the type of the value the reader is currently pointing to; or for a types-only reader gets the t...
#define FALSE
Expands to "0".
void dbus_message_set_allow_interactive_authorization(DBusMessage *message, dbus_bool_t allow)
Sets a flag indicating that the caller of the method is prepared to wait for interactive authorizatio...
#define DBUS_HEADER_FIELD_PATH
Header field code for the path - the path is the object emitting a signal or the object receiving a m...
int dbus_message_get_type(DBusMessage *message)
Gets the type of a message.
#define DBUS_HEADER_FIELD_REPLY_SERIAL
Header field code for a reply serial, used to match a DBUS_MESSAGE_TYPE_METHOD_RETURN message with th...
unsigned int buffer_outstanding
Someone is using the buffer to read.
int generation
_dbus_current_generation when message was created
void _dbus_list_prepend_link(DBusList **list, DBusList *link)
Prepends a link to the list.
dbus_bool_t _dbus_string_set_length(DBusString *str, int length)
Sets the length of a string.
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_register_shutdown_func(DBusShutdownFunction function, void *data)
Register a cleanup function to be called exactly once the next time dbus_shutdown() is called...
#define _DBUS_LOCK(name)
Locks a global lock, initializing it first if necessary.
#define _DBUS_LOCK_NAME(name)
Expands to name of a global lock variable.
const char * _dbus_type_to_string(int typecode)
Returns a string describing the given type.
DBusMessage * _dbus_message_loader_peek_message(DBusMessageLoader *loader)
Peeks at first loaded message, returns NULL if no messages have been queued.
dbus_bool_t _dbus_string_copy_len(const DBusString *source, int start, int len, DBusString *dest, int insert_at)
Like _dbus_string_copy(), but can copy a segment from the middle of the source string.
dbus_bool_t _dbus_string_steal_data(DBusString *str, char **data_return)
Like _dbus_string_get_data(), but removes the gotten data from the original string.
void _dbus_type_reader_get_signature(const DBusTypeReader *reader, const DBusString **str_p, int *start_p, int *len_p)
Gets the string and range of said string containing the signature of the current value.
dbus_bool_t dbus_message_append_args_valist(DBusMessage *message, int first_arg_type, va_list var_args)
Like dbus_message_append_args() but takes a va_list for use by language bindings. ...
int dbus_message_demarshal_bytes_needed(const char *buf, int len)
Returns the number of bytes required to be in the buffer to demarshal a D-Bus message.
dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
char * dbus_message_iter_get_signature(DBusMessageIter *iter)
Returns the current signature of a message iterator.
dbus_bool_t _dbus_type_writer_write_fixed_multi(DBusTypeWriter *writer, int element_type, const void *value, int n_elements)
Writes a block of fixed-length basic values, i.e.
void dbus_message_iter_abandon_container(DBusMessageIter *iter, DBusMessageIter *sub)
Abandons creation of a contained-typed value and frees resources created by dbus_message_iter_open_co...
DBUS_PRIVATE_EXPORT void _dbus_verbose_bytes_of_string(const DBusString *str, int start, int len)
Dump the given part of the string to verbose log.
dbus_bool_t _dbus_data_slot_allocator_alloc(DBusDataSlotAllocator *allocator, dbus_int32_t *slot_id_p)
Allocates an integer ID to be used for storing data in a DBusDataSlotList.
dbus_bool_t dbus_message_contains_unix_fds(DBusMessage *message)
Checks whether a message contains unix fds.
#define DBUS_HEADER_FLAG_NO_AUTO_START
If set, this flag means that even if the message bus knows how to start an owner for the destination ...
dbus_bool_t _dbus_message_loader_queue_messages(DBusMessageLoader *loader)
Converts buffered data into messages, if we have enough data.
void _dbus_message_get_unix_fds(DBusMessage *message, const int **fds, unsigned *n_fds)
Gets the unix fds to be sent over the network for this message.
int refcount
Reference count.
char * _dbus_strdup(const char *str)
Duplicates a string.
#define MAX_MESSAGE_SIZE_TO_CACHE
Avoid caching huge messages.
const char * _dbus_getenv(const char *varname)
Wrapper for getenv().
#define DBUS_ERROR_INVALID_ARGS
Invalid arguments passed to a method call.
void _dbus_data_slot_allocator_free(DBusDataSlotAllocator *allocator, dbus_int32_t *slot_id_p)
Deallocates an ID previously allocated with _dbus_data_slot_allocator_alloc().
int _dbus_type_get_alignment(int typecode)
Gets the alignment requirement for the given type; will be 1, 4, or 8.
DBusValidity corruption_reason
why we were corrupted
void _dbus_message_loader_set_max_message_unix_fds(DBusMessageLoader *loader, long n)
Sets the maximum unix fds per message we allow.
dbus_bool_t dbus_message_set_member(DBusMessage *message, const char *member)
Sets the interface member being invoked (DBUS_MESSAGE_TYPE_METHOD_CALL) or emitted (DBUS_MESSAGE_TYPE...
const char * dbus_message_type_to_string(int type)
Utility function to convert a D-Bus message type into a machine-readable string (not translated)...
void dbus_message_unref(DBusMessage *message)
Decrements the reference count of a DBusMessage, freeing the message if the count reaches 0...
void _dbus_string_init_const_len(DBusString *str, const char *value, int len)
Initializes a constant string with a length.
Implementation details of DBusMessageLoader.
dbus_bool_t _dbus_type_writer_recurse(DBusTypeWriter *writer, int container_type, const DBusString *contained_type, int contained_type_start, DBusTypeWriter *sub)
Opens a new container and writes out the initial information for that container.
dbus_uint32_t u32
as int32
DBusMessage * dbus_message_new_error_printf(DBusMessage *reply_to, const char *error_name, const char *error_format,...)
Creates a new message that is an error reply to another message, allowing you to use printf formattin...
dbus_bool_t dbus_message_set_data(DBusMessage *message, dbus_int32_t slot, void *data, DBusFreeFunction free_data_func)
Stores a pointer on a DBusMessage, along with an optional function to be used for freeing the data wh...
void dbus_message_set_serial(DBusMessage *message, dbus_uint32_t serial)
Sets the serial number of a message.
void _dbus_header_toggle_flag(DBusHeader *header, dbus_uint32_t flag, dbus_bool_t value)
Toggles a message flag bit, turning on the bit if value = TRUE and flipping it off if value = FALSE...
void _dbus_header_update_lengths(DBusHeader *header, int body_len)
Fills in the correct body length.
DBusMessage * dbus_message_new_method_return(DBusMessage *method_call)
Constructs a message that is a reply to a method call.
DBusTypeWriter writer
writer
void _dbus_data_slot_list_free(DBusDataSlotList *list)
Frees the data slot list and all data slots contained in it, calling application-provided free functi...
#define DBUS_MAXIMUM_MESSAGE_LENGTH
The maximum total message size including header and body; similar rationale to max array size...
DBusDataSlotList slot_list
Data stored by allocated integer ID.
void _dbus_list_clear(DBusList **list)
Frees all links in the list and sets the list head to NULL.
void _dbus_marshal_byteswap(const DBusString *signature, int signature_start, int old_byte_order, int new_byte_order, DBusString *value_str, int value_pos)
Byteswaps the marshaled data in the given value_str.
int _dbus_message_loader_get_pending_fds_count(DBusMessageLoader *loader)
Return how many file descriptors are pending in the loader.
dbus_bool_t dbus_type_is_container(int typecode)
A "container type" can contain basic types, or nested container types.
DBusMessage * dbus_message_new_error(DBusMessage *reply_to, const char *error_name, const char *error_message)
Creates a new message that is an error reply to another message.
void _dbus_counter_adjust_size(DBusCounter *counter, long delta)
Adjusts the value of the size counter by the given delta which may be positive or negative...