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-unix.h"
43 #define _DBUS_TYPE_IS_STRINGLIKE(type) \
44 (type == DBUS_TYPE_STRING || type == DBUS_TYPE_SIGNATURE || \
45 type == DBUS_TYPE_OBJECT_PATH)
47 static void dbus_message_finalize (
DBusMessage *message);
59 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
61 _dbus_enable_message_cache (
void)
63 static int enabled = -1;
78 _dbus_warn (
"DBUS_MESSAGE_CACHE should be 0 or 1 if set, not '%s'",
87 # define _dbus_enable_message_cache() (TRUE)
90 #ifndef _dbus_message_trace_ref
97 static int enabled = -1;
99 _dbus_trace_ref (
"DBusMessage", message, old_refcount, new_refcount, why,
100 "DBUS_MESSAGE_TRACE", &enabled);
113 DBUS_MESSAGE_ITER_TYPE_READER = 3,
114 DBUS_MESSAGE_ITER_TYPE_WRITER = 7
152 *type_str_p = &_dbus_empty_signature_str;
171 if (byte_order == DBUS_COMPILER_BYTE_ORDER)
174 _dbus_verbose (
"Swapping message into compiler byte order\n");
176 get_const_signature (&message->
header, &type_str, &type_pos);
180 DBUS_COMPILER_BYTE_ORDER,
185 DBUS_COMPILER_BYTE_ORDER);
194 #define ensure_byte_order(message) _dbus_message_byteswap (message)
214 *body = &message->
body;
232 #ifdef HAVE_UNIX_FD_PASSING
233 *fds = message->unix_fds;
234 *n_fds = message->n_unix_fds;
254 dbus_uint32_t serial)
256 _dbus_return_if_fail (message !=
NULL);
257 _dbus_return_if_fail (!message->
locked);
291 _dbus_string_get_length (&message->
header.
data) +
292 _dbus_string_get_length (&message->
body);
294 #ifdef HAVE_UNIX_FD_PASSING
295 message->unix_fd_counter_delta = message->n_unix_fds;
299 _dbus_verbose (
"message has size %ld\n",
308 #ifdef HAVE_UNIX_FD_PASSING
364 #ifdef HAVE_UNIX_FD_PASSING
388 _dbus_string_get_length (&message->
body));
440 const char *signature)
442 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
443 _dbus_return_val_if_fail (!message->
locked,
FALSE);
444 _dbus_return_val_if_fail (signature ==
NULL ||
445 _dbus_check_is_valid_signature (signature));
447 _dbus_return_val_if_fail (_dbus_string_get_length (&message->
body) == 0 ||
450 return set_or_delete_string_field (message,
504 #define MAX_MESSAGE_SIZE_TO_CACHE 10 * _DBUS_ONE_KILOBYTE
507 #define MAX_MESSAGE_CACHE_SIZE 5
511 static int message_cache_count = 0;
515 dbus_message_cache_shutdown (
void *data)
521 "before registering a shutdown function");
526 if (message_cache[i])
527 dbus_message_finalize (message_cache[i]);
532 message_cache_count = 0;
533 message_cache_shutdown_registered =
FALSE;
546 dbus_message_get_cached (
void)
562 if (message_cache_count == 0)
577 if (message_cache[i])
579 message = message_cache[i];
580 message_cache[i] =
NULL;
581 message_cache_count -= 1;
599 #ifdef HAVE_UNIX_FD_PASSING
601 close_unix_fds(
int *fds,
unsigned *n_fds)
611 for (i = 0; i < *n_fds; i++)
627 free_counter (
void *element,
634 #ifdef HAVE_UNIX_FD_PASSING
648 dbus_message_cache_or_finalize (
DBusMessage *message)
661 free_counter, message);
664 #ifdef HAVE_UNIX_FD_PASSING
665 close_unix_fds(message->unix_fds, &message->n_unix_fds);
675 "the first time we constructed a message");
678 if (!message_cache_shutdown_registered)
688 message_cache[i] =
NULL;
692 message_cache_shutdown_registered =
TRUE;
697 if (!_dbus_enable_message_cache ())
700 if ((_dbus_string_get_length (&message->
header.
data) +
701 _dbus_string_get_length (&message->
body)) >
710 while (message_cache[i] !=
NULL)
716 message_cache[i] = message;
717 message_cache_count += 1;
719 #ifndef DBUS_DISABLE_CHECKS
729 dbus_message_finalize (message);
732 #if defined(DBUS_ENABLE_CHECKS) || defined(DBUS_ENABLE_ASSERT)
746 if (iter->
iter_type == DBUS_MESSAGE_ITER_TYPE_READER)
756 else if (iter->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER)
774 _dbus_warn_check_failed (
"dbus message iterator invalid because the message has been modified (or perhaps the iterator is just uninitialized)\n");
801 int spec_type, msg_type, i, j;
809 spec_type = first_arg_type;
815 DBUS_VA_COPY (copy_args, var_args);
821 if (msg_type != spec_type)
824 "Argument %d is specified to be of type \"%s\", but "
825 "is actually of type \"%s\"\n", i,
834 #ifdef HAVE_UNIX_FD_PASSING
838 pfd = va_arg (var_args,
int*);
846 "Message refers to file descriptor at index %i,"
847 "but has only %i descriptors attached.\n",
859 "Platform does not support file desciptor passing.\n");
877 int spec_element_type;
882 spec_element_type = va_arg (var_args,
int);
885 if (spec_element_type != element_type)
888 "Argument %d is specified to be an array of \"%s\", but "
889 "is actually an array of \"%s\"\n",
901 n_elements_p = va_arg (var_args,
int*);
909 (
void *) ptr, n_elements_p);
911 else if (_DBUS_TYPE_IS_STRINGLIKE (spec_element_type))
917 str_array_p = va_arg (var_args,
char***);
918 n_elements_p = va_arg (var_args,
int*);
933 str_array =
dbus_new0 (
char*, n_elements + 1);
934 if (str_array ==
NULL)
936 _DBUS_SET_OOM (error);
944 while (j < n_elements)
951 if (str_array[j] ==
NULL)
954 _DBUS_SET_OOM (error);
968 *str_array_p = str_array;
969 *n_elements_p = n_elements;
971 #ifndef DBUS_DISABLE_CHECKS
974 _dbus_warn (
"you can't read arrays of container types (struct, variant, array) with %s for now\n",
975 _DBUS_FUNCTION_NAME);
980 #ifndef DBUS_DISABLE_CHECKS
983 _dbus_warn (
"you can only read arrays and basic types with %s for now\n",
984 _DBUS_FUNCTION_NAME);
992 spec_type = va_arg (var_args,
int);
996 "Message has only %d arguments, but more were expected", i);
1010 spec_type = first_arg_type;
1017 #ifdef HAVE_UNIX_FD_PASSING
1020 pfd = va_arg (copy_args,
int *);
1036 int spec_element_type;
1038 spec_element_type = va_arg (copy_args,
int);
1043 va_arg (copy_args,
int *);
1045 else if (_DBUS_TYPE_IS_STRINGLIKE (spec_element_type))
1047 char ***str_array_p;
1049 str_array_p = va_arg (copy_args,
char ***);
1051 va_arg (copy_args,
int *);
1054 *str_array_p =
NULL;
1058 spec_type = va_arg (copy_args,
int);
1128 _dbus_return_val_if_fail (message !=
NULL, 0);
1143 dbus_uint32_t reply_serial)
1145 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
1146 _dbus_return_val_if_fail (!message->
locked,
FALSE);
1147 _dbus_return_val_if_fail (reply_serial != 0,
FALSE);
1164 dbus_uint32_t v_UINT32;
1166 _dbus_return_val_if_fail (message !=
NULL, 0);
1186 free_counter, message);
1192 #ifdef HAVE_UNIX_FD_PASSING
1193 close_unix_fds(message->unix_fds, &message->n_unix_fds);
1203 dbus_message_new_empty_header (
void)
1208 message = dbus_message_get_cached ();
1210 if (message !=
NULL)
1218 if (message ==
NULL)
1220 #ifndef DBUS_DISABLE_CHECKS
1224 #ifdef HAVE_UNIX_FD_PASSING
1225 message->unix_fds =
NULL;
1226 message->n_unix_fds_allocated = 0;
1232 _dbus_message_trace_ref (message, 0, 1,
"new_empty_header");
1235 #ifndef DBUS_DISABLE_CHECKS
1242 #ifdef HAVE_UNIX_FD_PASSING
1243 message->n_unix_fds = 0;
1244 message->n_unix_fds_allocated = 0;
1245 message->unix_fd_counter_delta = 0;
1294 message = dbus_message_new_empty_header ();
1295 if (message ==
NULL)
1299 DBUS_COMPILER_BYTE_ORDER,
1339 _dbus_return_val_if_fail (path !=
NULL,
NULL);
1340 _dbus_return_val_if_fail (method !=
NULL,
NULL);
1341 _dbus_return_val_if_fail (destination ==
NULL ||
1342 _dbus_check_is_valid_bus_name (destination),
NULL);
1343 _dbus_return_val_if_fail (_dbus_check_is_valid_path (path),
NULL);
1344 _dbus_return_val_if_fail (iface ==
NULL ||
1345 _dbus_check_is_valid_interface (iface),
NULL);
1346 _dbus_return_val_if_fail (_dbus_check_is_valid_member (method),
NULL);
1348 message = dbus_message_new_empty_header ();
1349 if (message ==
NULL)
1353 DBUS_COMPILER_BYTE_ORDER,
1355 destination, path, iface, method,
NULL))
1377 _dbus_return_val_if_fail (method_call !=
NULL,
NULL);
1383 message = dbus_message_new_empty_header ();
1384 if (message ==
NULL)
1388 DBUS_COMPILER_BYTE_ORDER,
1429 _dbus_return_val_if_fail (path !=
NULL,
NULL);
1430 _dbus_return_val_if_fail (iface !=
NULL,
NULL);
1431 _dbus_return_val_if_fail (name !=
NULL,
NULL);
1432 _dbus_return_val_if_fail (_dbus_check_is_valid_path (path),
NULL);
1433 _dbus_return_val_if_fail (_dbus_check_is_valid_interface (iface),
NULL);
1434 _dbus_return_val_if_fail (_dbus_check_is_valid_member (name),
NULL);
1436 message = dbus_message_new_empty_header ();
1437 if (message ==
NULL)
1441 DBUS_COMPILER_BYTE_ORDER,
1470 const char *error_name,
1471 const char *error_message)
1477 _dbus_return_val_if_fail (reply_to !=
NULL,
NULL);
1478 _dbus_return_val_if_fail (error_name !=
NULL,
NULL);
1479 _dbus_return_val_if_fail (_dbus_check_is_valid_error_name (error_name),
NULL);
1487 message = dbus_message_new_empty_header ();
1488 if (message ==
NULL)
1492 DBUS_COMPILER_BYTE_ORDER,
1509 if (error_message !=
NULL)
1542 const char *error_name,
1543 const char *error_format,
1550 _dbus_return_val_if_fail (reply_to !=
NULL,
NULL);
1551 _dbus_return_val_if_fail (error_name !=
NULL,
NULL);
1552 _dbus_return_val_if_fail (_dbus_check_is_valid_error_name (error_name),
NULL);
1557 va_start (args, error_format);
1561 _dbus_string_get_const_data (&str));
1590 _dbus_return_val_if_fail (message !=
NULL,
NULL);
1599 #ifndef DBUS_DISABLE_CHECKS
1610 _dbus_string_get_length (&message->
body)))
1621 #ifdef HAVE_UNIX_FD_PASSING
1622 retval->unix_fds =
dbus_new(
int, message->n_unix_fds);
1623 if (retval->unix_fds ==
NULL && message->n_unix_fds > 0)
1626 retval->n_unix_fds_allocated = message->n_unix_fds;
1628 for (retval->n_unix_fds = 0;
1629 retval->n_unix_fds < message->n_unix_fds;
1630 retval->n_unix_fds++)
1632 retval->unix_fds[retval->n_unix_fds] =
_dbus_dup(message->unix_fds[retval->n_unix_fds],
NULL);
1634 if (retval->unix_fds[retval->n_unix_fds] < 0)
1640 _dbus_message_trace_ref (retval, 0, 1,
"copy");
1647 #ifdef HAVE_UNIX_FD_PASSING
1648 close_unix_fds(retval->unix_fds, &retval->n_unix_fds);
1668 dbus_int32_t old_refcount;
1670 _dbus_return_val_if_fail (message !=
NULL,
NULL);
1676 _dbus_message_trace_ref (message, old_refcount, old_refcount + 1,
"ref");
1691 dbus_int32_t old_refcount;
1693 _dbus_return_if_fail (message !=
NULL);
1695 _dbus_return_if_fail (!message->
in_cache);
1701 _dbus_message_trace_ref (message, old_refcount, old_refcount - 1,
"unref");
1703 if (old_refcount == 1)
1706 dbus_message_cache_or_finalize (message);
1798 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
1800 va_start (var_args, first_arg_type);
1830 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
1832 type = first_arg_type;
1854 element_type = va_arg (var_args,
int);
1856 buf[0] = element_type;
1871 n_elements = va_arg (var_args,
int);
1881 else if (_DBUS_TYPE_IS_STRINGLIKE (element_type))
1883 const char ***value_p;
1888 value_p = va_arg (var_args,
const char***);
1889 n_elements = va_arg (var_args,
int);
1894 while (i < n_elements)
1907 _dbus_warn (
"arrays of %s can't be appended with %s for now\n",
1909 _DBUS_FUNCTION_NAME);
1916 #ifndef DBUS_DISABLE_CHECKS
1919 _dbus_warn (
"type %s isn't supported yet in %s\n",
1925 type = va_arg (var_args,
int);
1987 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
1988 _dbus_return_val_if_error_is_set (error,
FALSE);
1990 va_start (var_args, first_arg_type);
2015 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
2016 _dbus_return_val_if_error_is_set (error,
FALSE);
2023 _dbus_message_iter_init_common (
DBusMessage *message,
2070 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
2071 _dbus_return_val_if_fail (iter !=
NULL,
FALSE);
2073 get_const_signature (&message->
header, &type_str, &type_pos);
2075 _dbus_message_iter_init_common (message, real,
2076 DBUS_MESSAGE_ITER_TYPE_READER);
2098 _dbus_return_val_if_fail (_dbus_message_iter_check (real),
FALSE);
2099 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_READER,
FALSE);
2117 _dbus_return_val_if_fail (_dbus_message_iter_check (real),
FALSE);
2118 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_READER,
FALSE);
2143 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_READER,
FALSE);
2200 _dbus_return_if_fail (_dbus_message_iter_check (real));
2201 _dbus_return_if_fail (sub !=
NULL);
2227 _dbus_return_val_if_fail (_dbus_message_iter_check (real),
NULL);
2235 _dbus_string_get_const_data (sig) + start,
2297 _dbus_return_if_fail (_dbus_message_iter_check (real));
2298 _dbus_return_if_fail (value !=
NULL);
2302 #ifdef HAVE_UNIX_FD_PASSING
2310 *((
int*) value) = -1;
2316 *((
int*) value) = -1;
2349 _dbus_return_val_if_fail (_dbus_message_iter_check (real), 0);
2395 #ifndef DBUS_DISABLE_CHECKS
2398 _dbus_return_if_fail (_dbus_message_iter_check (real));
2399 _dbus_return_if_fail (value !=
NULL);
2425 _dbus_return_if_fail (message !=
NULL);
2426 _dbus_return_if_fail (iter !=
NULL);
2428 _dbus_message_iter_init_common (message, real,
2429 DBUS_MESSAGE_ITER_TYPE_WRITER);
2438 _dbus_string_get_length (&message->
body));
2454 int current_sig_pos;
2471 ¤t_sig, ¤t_sig_pos))
2478 current_len = _dbus_string_get_byte (current_sig, current_sig_pos);
2479 current_sig_pos += 1;
2507 str, _dbus_string_get_length (str));
2524 const char *v_STRING;
2541 v_STRING = _dbus_string_get_const_data (str);
2584 #ifndef DBUS_DISABLE_CHECKS
2588 if (!_dbus_message_iter_check (iter))
2601 #ifdef HAVE_UNIX_FD_PASSING
2611 if (m->n_unix_fds + n > m->n_unix_fds_allocated)
2617 k = (m->n_unix_fds + n) * 2;
2628 m->n_unix_fds_allocated = k;
2631 return m->unix_fds + m->n_unix_fds;
2662 _dbus_return_val_if_fail (_dbus_message_iter_append_check (real),
FALSE);
2663 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER,
FALSE);
2665 _dbus_return_val_if_fail (value !=
NULL,
FALSE);
2667 #ifndef DBUS_DISABLE_CHECKS
2670 const char *
const *string_p;
2675 _dbus_return_val_if_fail (_dbus_check_is_valid_utf8 (*string_p),
FALSE);
2680 _dbus_return_val_if_fail (_dbus_check_is_valid_path (*string_p),
FALSE);
2685 _dbus_return_val_if_fail (_dbus_check_is_valid_signature (*string_p),
FALSE);
2690 _dbus_return_val_if_fail (*bool_p == 0 || *bool_p == 1,
FALSE);
2700 if (!_dbus_message_iter_open_signature (real))
2705 #ifdef HAVE_UNIX_FD_PASSING
2710 if (!(fds = expand_fd_array(real->
message, 1)))
2717 u = real->
message->n_unix_fds;
2725 real->
message->n_unix_fds += 1;
2748 if (!_dbus_message_iter_close_signature (real))
2798 _dbus_return_val_if_fail (_dbus_message_iter_append_check (real),
FALSE);
2799 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER,
FALSE);
2802 _dbus_return_val_if_fail (value !=
NULL,
FALSE);
2803 _dbus_return_val_if_fail (n_elements >= 0,
FALSE);
2804 _dbus_return_val_if_fail (n_elements <=
2808 #ifndef DBUS_DISABLE_CHECKS
2814 for (i = 0; i < n_elements; i++)
2816 _dbus_return_val_if_fail ((*bools)[i] == 0 || (*bools)[i] == 1,
FALSE);
2850 const char *contained_signature,
2857 _dbus_return_val_if_fail (_dbus_message_iter_append_check (real),
FALSE);
2858 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER,
FALSE);
2860 _dbus_return_val_if_fail (sub !=
NULL,
FALSE);
2862 contained_signature ==
NULL) ||
2864 contained_signature ==
NULL) ||
2866 contained_signature !=
NULL) ||
2875 (contained_signature ==
NULL ||
2876 _dbus_check_is_valid_signature (contained_signature)),
2879 if (!_dbus_message_iter_open_signature (real))
2884 if (contained_signature !=
NULL)
2924 _dbus_return_val_if_fail (_dbus_message_iter_append_check (real),
FALSE);
2925 _dbus_return_val_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER,
FALSE);
2926 _dbus_return_val_if_fail (_dbus_message_iter_append_check (real_sub),
FALSE);
2927 _dbus_return_val_if_fail (real_sub->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER,
FALSE);
2932 if (!_dbus_message_iter_close_signature (real))
2954 #ifndef DBUS_DISABLE_CHECKS
2957 _dbus_return_if_fail (_dbus_message_iter_append_check (real));
2958 _dbus_return_if_fail (real->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER);
2959 _dbus_return_if_fail (_dbus_message_iter_append_check (real_sub));
2960 _dbus_return_if_fail (real_sub->
iter_type == DBUS_MESSAGE_ITER_TYPE_WRITER);
2963 _dbus_message_iter_abandon_signature (real);
2986 _dbus_return_if_fail (message !=
NULL);
2987 _dbus_return_if_fail (!message->
locked);
3004 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3028 _dbus_return_if_fail (message !=
NULL);
3029 _dbus_return_if_fail (!message->
locked);
3046 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3067 const char *object_path)
3069 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3070 _dbus_return_val_if_fail (!message->
locked,
FALSE);
3071 _dbus_return_val_if_fail (object_path ==
NULL ||
3072 _dbus_check_is_valid_path (object_path),
3075 return set_or_delete_string_field (message,
3099 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3122 const char *msg_path;
3125 if (msg_path ==
NULL)
3136 if (strcmp (msg_path, path) == 0)
3168 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3169 _dbus_return_val_if_fail (path !=
NULL,
FALSE);
3200 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3201 _dbus_return_val_if_fail (!message->
locked,
FALSE);
3202 _dbus_return_val_if_fail (iface ==
NULL ||
3203 _dbus_check_is_valid_interface (iface),
3206 return set_or_delete_string_field (message,
3230 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3251 const char *msg_interface;
3254 if (msg_interface ==
NULL)
3265 if (strcmp (msg_interface, iface) == 0)
3288 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3289 _dbus_return_val_if_fail (!message->
locked,
FALSE);
3290 _dbus_return_val_if_fail (member ==
NULL ||
3291 _dbus_check_is_valid_member (member),
3294 return set_or_delete_string_field (message,
3316 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3337 const char *msg_member;
3340 if (msg_member ==
NULL)
3351 if (strcmp (msg_member, member) == 0)
3371 const char *error_name)
3373 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3374 _dbus_return_val_if_fail (!message->
locked,
FALSE);
3375 _dbus_return_val_if_fail (error_name ==
NULL ||
3376 _dbus_check_is_valid_error_name (error_name),
3379 return set_or_delete_string_field (message,
3400 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3425 const char *destination)
3427 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3428 _dbus_return_val_if_fail (!message->
locked,
FALSE);
3429 _dbus_return_val_if_fail (destination ==
NULL ||
3430 _dbus_check_is_valid_bus_name (destination),
3433 return set_or_delete_string_field (message,
3453 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3481 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3482 _dbus_return_val_if_fail (!message->
locked,
FALSE);
3483 _dbus_return_val_if_fail (sender ==
NULL ||
3484 _dbus_check_is_valid_bus_name (sender),
3487 return set_or_delete_string_field (message,
3513 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3547 _dbus_return_val_if_fail (message !=
NULL,
NULL);
3549 get_const_signature (&message->
header, &type_str, &type_pos);
3551 return _dbus_string_get_const_data_len (type_str, type_pos, 0);
3555 _dbus_message_has_type_interface_member (
DBusMessage *message,
3575 if (n && strcmp (n, member) == 0)
3579 if (n ==
NULL || strcmp (n, iface) == 0)
3605 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3606 _dbus_return_val_if_fail (iface !=
NULL,
FALSE);
3607 _dbus_return_val_if_fail (method !=
NULL,
FALSE);
3612 return _dbus_message_has_type_interface_member (message,
3631 const char *signal_name)
3633 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3634 _dbus_return_val_if_fail (iface !=
NULL,
FALSE);
3635 _dbus_return_val_if_fail (signal_name !=
NULL,
FALSE);
3640 return _dbus_message_has_type_interface_member (message,
3642 iface, signal_name);
3657 const char *error_name)
3661 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3662 _dbus_return_val_if_fail (error_name !=
NULL,
FALSE);
3672 if (n && strcmp (n, error_name) == 0)
3694 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3695 _dbus_return_val_if_fail (name !=
NULL,
FALSE);
3702 if (s && strcmp (s, name) == 0)
3729 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3730 _dbus_return_val_if_fail (name !=
NULL,
FALSE);
3737 if (s && strcmp (s, name) == 0)
3754 const char *signature)
3758 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3759 _dbus_return_val_if_fail (signature !=
NULL,
FALSE);
3766 if (s && strcmp (s, signature) == 0)
3800 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
3801 _dbus_return_val_if_error_is_set (error,
FALSE);
3812 str ?
"%s" :
NULL, str);
3826 #ifdef HAVE_UNIX_FD_PASSING
3829 return message->n_unix_fds > 0;
3853 #define INITIAL_LOADER_DATA_LEN 32
3894 #ifdef HAVE_UNIX_FD_PASSING
3895 loader->unix_fds =
NULL;
3896 loader->n_unix_fds = loader->n_unix_fds_allocated = 0;
3897 loader->unix_fds_outstanding =
FALSE;
3929 #ifdef HAVE_UNIX_FD_PASSING
3930 close_unix_fds(loader->unix_fds, &loader->n_unix_fds);
3966 *buffer = &loader->
data;
4003 unsigned *max_n_fds)
4005 #ifdef HAVE_UNIX_FD_PASSING
4024 loader->unix_fds = a;
4028 *fds = loader->unix_fds + loader->n_unix_fds;
4029 *max_n_fds = loader->n_unix_fds_allocated - loader->n_unix_fds;
4031 loader->unix_fds_outstanding =
TRUE;
4054 #ifdef HAVE_UNIX_FD_PASSING
4056 _dbus_assert(loader->unix_fds + loader->n_unix_fds == fds);
4057 _dbus_assert(loader->n_unix_fds + n_fds <= loader->n_unix_fds_allocated);
4059 loader->n_unix_fds += n_fds;
4060 loader->unix_fds_outstanding =
FALSE;
4096 int fields_array_len,
4105 dbus_uint32_t n_unix_fds = 0;
4107 mode = DBUS_VALIDATION_MODE_DATA_IS_UNTRUSTED;
4117 _dbus_assert ((header_len + body_len) <= _dbus_string_get_length (&loader->
data));
4127 _dbus_string_get_length (&loader->
data)))
4129 _dbus_verbose (
"Failed to load header for new message code %d\n", validity);
4148 if (mode != DBUS_VALIDATION_MODE_WE_TRUST_THIS_DATA_ABSOLUTELY)
4150 get_const_signature (&message->
header, &type_str, &type_pos);
4164 _dbus_verbose (
"Failed to validate message body code %d\n", validity);
4179 #ifdef HAVE_UNIX_FD_PASSING
4181 if (n_unix_fds > loader->n_unix_fds)
4183 _dbus_verbose(
"Message contains references to more unix fds than were sent %u != %u\n",
4184 n_unix_fds, loader->n_unix_fds);
4197 message->unix_fds =
_dbus_memdup(loader->unix_fds, n_unix_fds *
sizeof(message->unix_fds[0]));
4198 if (message->unix_fds ==
NULL)
4200 _dbus_verbose (
"Failed to allocate file descriptor array\n");
4205 message->n_unix_fds_allocated = message->n_unix_fds = n_unix_fds;
4206 loader->n_unix_fds -= n_unix_fds;
4207 memmove (loader->unix_fds, loader->unix_fds + n_unix_fds, loader->n_unix_fds * sizeof (loader->unix_fds[0]));
4210 message->unix_fds =
NULL;
4216 _dbus_verbose (
"Hmm, message claims to come with file descriptors "
4217 "but that's not supported on our platform, disconnecting.\n");
4230 _dbus_verbose (
"Failed to append new message to loader queue\n");
4237 (header_len + body_len));
4241 _dbus_verbose (
"Failed to move body into new message\n");
4254 _dbus_verbose (
"Loaded message %p\n", message);
4301 int byte_order, fields_array_len, header_len, body_len;
4310 _dbus_string_get_length (&loader->
data)))
4316 message = dbus_message_new_empty_header ();
4317 if (message ==
NULL)
4320 if (!load_message (loader, message,
4321 byte_order, fields_array_len,
4322 header_len, body_len))
4336 _dbus_verbose (
"Initial peek at header says we don't have a whole message yet, or data broken with invalid code %d\n",
4451 _dbus_verbose (
"clamping requested max message size %ld to %d\n",
4482 _dbus_verbose (
"clamping requested max message unix_fds %ld to %d\n",
4539 _dbus_return_if_fail (*slot_p >= 0);
4567 _dbus_return_val_if_fail (message !=
NULL,
FALSE);
4568 _dbus_return_val_if_fail (slot >= 0,
FALSE);
4572 slot, data, free_data_func,
4573 &old_free_func, &old_data);
4579 (* old_free_func) (old_data);
4599 _dbus_return_val_if_fail (message !=
NULL,
NULL);
4624 if (strcmp (type_str,
"method_call") == 0)
4626 if (strcmp (type_str,
"method_return") == 0)
4628 else if (strcmp (type_str,
"signal") == 0)
4630 else if (strcmp (type_str,
"error") == 0)
4655 return "method_call";
4657 return "method_return";
4681 char **marshalled_data_p,
4687 _dbus_return_val_if_fail (msg !=
NULL,
FALSE);
4688 _dbus_return_val_if_fail (marshalled_data_p !=
NULL,
FALSE);
4689 _dbus_return_val_if_fail (len_p !=
NULL,
FALSE);
4695 was_locked = msg->
locked;
4703 *len_p = _dbus_string_get_length (&tmp);
4708 *len_p = _dbus_string_get_length (&tmp);
4750 _dbus_return_val_if_fail (str !=
NULL,
NULL);
4782 _DBUS_SET_OOM (error);
4804 int byte_order, fields_array_len, header_len, body_len;
4818 &validity, &byte_order,
4828 _dbus_assert (have_message || (header_len + body_len) > len);
4829 (void) have_message;
4830 return header_len + body_len;
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...
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_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
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_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
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.
int _dbus_dup(int fd, DBusError *error)
Duplicates a file descriptor.
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.
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_getenv(const char *varname)
Wrapper for getenv().
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).
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
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.
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)
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.
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_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
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.
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...
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_close(int fd, DBusError *error)
Closes a file descriptor.
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()
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.
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.
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".
#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_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.
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...
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.
#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.
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...