1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* signals.c Bus signal connection implementation
4 * Copyright (C) 2003, 2005 Red Hat, Inc.
6 * Licensed under the Academic Free License version 2.1
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include <dbus/dbus-marshal-validate.h>
32 int refcount; /**< reference count */
34 DBusConnection *matches_go_to; /**< Owner of the rule */
36 unsigned int flags; /**< BusMatchFlags */
45 unsigned int *arg_lens;
50 #define BUS_MATCH_ARG_NAMESPACE 0x4000000u
51 #define BUS_MATCH_ARG_IS_PATH 0x8000000u
53 #define BUS_MATCH_ARG_FLAGS (BUS_MATCH_ARG_NAMESPACE | BUS_MATCH_ARG_IS_PATH)
56 bus_match_rule_new (DBusConnection *matches_go_to)
60 rule = dbus_new0 (BusMatchRule, 1);
65 rule->matches_go_to = matches_go_to;
67 #ifndef DBUS_ENABLE_EMBEDDED_TESTS
68 _dbus_assert (rule->matches_go_to != NULL);
75 bus_match_rule_ref (BusMatchRule *rule)
77 _dbus_assert (rule->refcount > 0);
85 bus_match_rule_unref (BusMatchRule *rule)
87 _dbus_assert (rule->refcount > 0);
90 if (rule->refcount == 0)
92 dbus_free (rule->interface);
93 dbus_free (rule->member);
94 dbus_free (rule->sender);
95 dbus_free (rule->destination);
96 dbus_free (rule->path);
97 dbus_free (rule->arg_lens);
99 /* can't use dbus_free_string_array() since there
107 while (i < rule->args_len)
110 dbus_free (rule->args[i]);
114 dbus_free (rule->args);
121 #ifdef DBUS_ENABLE_VERBOSE_MODE
122 /* Note this function does not do escaping, so it's only
123 * good for debug spew at the moment
126 match_rule_to_string (BusMatchRule *rule)
131 if (!_dbus_string_init (&str))
134 while ((s = _dbus_strdup ("nomem")) == NULL)
135 ; /* only OK for debug spew... */
139 if (rule->flags & BUS_MATCH_MESSAGE_TYPE)
141 if (!_dbus_string_append_printf (&str, "type='%s'",
142 dbus_message_type_to_string (rule->message_type)))
146 if (rule->flags & BUS_MATCH_INTERFACE)
148 if (_dbus_string_get_length (&str) > 0)
150 if (!_dbus_string_append (&str, ","))
154 if (!_dbus_string_append_printf (&str, "interface='%s'", rule->interface))
158 if (rule->flags & BUS_MATCH_MEMBER)
160 if (_dbus_string_get_length (&str) > 0)
162 if (!_dbus_string_append (&str, ","))
166 if (!_dbus_string_append_printf (&str, "member='%s'", rule->member))
170 if (rule->flags & BUS_MATCH_PATH)
172 if (_dbus_string_get_length (&str) > 0)
174 if (!_dbus_string_append (&str, ","))
178 if (!_dbus_string_append_printf (&str, "path='%s'", rule->path))
182 if (rule->flags & BUS_MATCH_PATH_NAMESPACE)
184 if (_dbus_string_get_length (&str) > 0)
186 if (!_dbus_string_append (&str, ","))
190 if (!_dbus_string_append_printf (&str, "path_namespace='%s'", rule->path))
194 if (rule->flags & BUS_MATCH_SENDER)
196 if (_dbus_string_get_length (&str) > 0)
198 if (!_dbus_string_append (&str, ","))
202 if (!_dbus_string_append_printf (&str, "sender='%s'", rule->sender))
206 if (rule->flags & BUS_MATCH_DESTINATION)
208 if (_dbus_string_get_length (&str) > 0)
210 if (!_dbus_string_append (&str, ","))
214 if (!_dbus_string_append_printf (&str, "destination='%s'", rule->destination))
218 if (rule->flags & BUS_MATCH_CLIENT_IS_EAVESDROPPING)
220 if (_dbus_string_get_length (&str) > 0)
222 if (!_dbus_string_append (&str, ","))
226 if (!_dbus_string_append_printf (&str, "eavesdrop='%s'",
227 (rule->flags & BUS_MATCH_CLIENT_IS_EAVESDROPPING) ?
232 if (rule->flags & BUS_MATCH_ARGS)
236 _dbus_assert (rule->args != NULL);
239 while (i < rule->args_len)
241 if (rule->args[i] != NULL)
243 dbus_bool_t is_path, is_namespace;
245 if (_dbus_string_get_length (&str) > 0)
247 if (!_dbus_string_append (&str, ","))
251 is_path = (rule->arg_lens[i] & BUS_MATCH_ARG_IS_PATH) != 0;
252 is_namespace = (rule->arg_lens[i] & BUS_MATCH_ARG_NAMESPACE) != 0;
254 if (!_dbus_string_append_printf (&str,
258 is_namespace ? "namespace" : "",
267 if (!_dbus_string_steal_data (&str, &ret))
270 _dbus_string_free (&str);
274 _dbus_string_free (&str);
277 while ((s = _dbus_strdup ("nomem")) == NULL)
278 ; /* only OK for debug spew... */
282 #endif /* DBUS_ENABLE_VERBOSE_MODE */
285 bus_match_rule_set_message_type (BusMatchRule *rule,
288 rule->flags |= BUS_MATCH_MESSAGE_TYPE;
290 rule->message_type = type;
296 bus_match_rule_set_interface (BusMatchRule *rule,
297 const char *interface)
301 _dbus_assert (interface != NULL);
303 new = _dbus_strdup (interface);
307 rule->flags |= BUS_MATCH_INTERFACE;
308 dbus_free (rule->interface);
309 rule->interface = new;
315 bus_match_rule_set_member (BusMatchRule *rule,
320 _dbus_assert (member != NULL);
322 new = _dbus_strdup (member);
326 rule->flags |= BUS_MATCH_MEMBER;
327 dbus_free (rule->member);
334 bus_match_rule_set_sender (BusMatchRule *rule,
339 _dbus_assert (sender != NULL);
341 new = _dbus_strdup (sender);
345 rule->flags |= BUS_MATCH_SENDER;
346 dbus_free (rule->sender);
353 bus_match_rule_set_destination (BusMatchRule *rule,
354 const char *destination)
358 _dbus_assert (destination != NULL);
360 new = _dbus_strdup (destination);
364 rule->flags |= BUS_MATCH_DESTINATION;
365 dbus_free (rule->destination);
366 rule->destination = new;
372 bus_match_rule_set_client_is_eavesdropping (BusMatchRule *rule,
373 dbus_bool_t is_eavesdropping)
375 if (is_eavesdropping)
376 rule->flags |= BUS_MATCH_CLIENT_IS_EAVESDROPPING;
378 rule->flags &= ~(BUS_MATCH_CLIENT_IS_EAVESDROPPING);
382 bus_match_rule_set_path (BusMatchRule *rule,
384 dbus_bool_t is_namespace)
388 _dbus_assert (path != NULL);
390 new = _dbus_strdup (path);
394 rule->flags &= ~(BUS_MATCH_PATH|BUS_MATCH_PATH_NAMESPACE);
397 rule->flags |= BUS_MATCH_PATH_NAMESPACE;
399 rule->flags |= BUS_MATCH_PATH;
401 dbus_free (rule->path);
408 bus_match_rule_set_arg (BusMatchRule *rule,
410 const DBusString *value,
412 dbus_bool_t is_namespace)
417 _dbus_assert (value != NULL);
419 /* args_len is the number of args not including null termination
422 if (arg >= rule->args_len)
424 unsigned int *new_arg_lens;
429 new_args_len = arg + 1;
431 /* add another + 1 here for null termination */
432 new_args = dbus_realloc (rule->args,
433 sizeof (char *) * (new_args_len + 1));
434 if (new_args == NULL)
437 /* NULL the new slots */
439 while (i <= new_args_len) /* <= for null termination */
445 rule->args = new_args;
447 /* and now add to the lengths */
448 new_arg_lens = dbus_realloc (rule->arg_lens,
449 sizeof (int) * (new_args_len + 1));
451 if (new_arg_lens == NULL)
454 /* zero the new slots */
456 while (i <= new_args_len) /* <= for null termination */
462 rule->arg_lens = new_arg_lens;
463 rule->args_len = new_args_len;
466 length = _dbus_string_get_length (value);
467 if (!_dbus_string_copy_data (value, &new))
470 rule->flags |= BUS_MATCH_ARGS;
472 dbus_free (rule->args[arg]);
473 rule->arg_lens[arg] = length;
474 rule->args[arg] = new;
477 rule->arg_lens[arg] |= BUS_MATCH_ARG_IS_PATH;
480 rule->arg_lens[arg] |= BUS_MATCH_ARG_NAMESPACE;
482 /* NULL termination didn't get busted */
483 _dbus_assert (rule->args[rule->args_len] == NULL);
484 _dbus_assert (rule->arg_lens[rule->args_len] == 0);
489 #define ISWHITE(c) (((c) == ' ') || ((c) == '\t') || ((c) == '\n') || ((c) == '\r'))
492 find_key (const DBusString *str,
500 const char *key_start;
503 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
505 s = _dbus_string_get_const_data (str);
509 while (*p && ISWHITE (*p))
514 while (*p && *p != '=' && !ISWHITE (*p))
519 while (*p && ISWHITE (*p))
522 if (key_start == key_end)
524 /* Empty match rules or trailing whitespace are OK */
531 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
532 "Match rule has a key with no subsequent '=' character");
537 if (!_dbus_string_append_len (key, key_start, key_end - key_start))
549 find_value (const DBusString *str,
561 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
563 orig_len = _dbus_string_get_length (value);
565 s = _dbus_string_get_const_data (str);
573 if (quote_char == '\0')
593 if (!_dbus_string_append_byte (value, *p))
600 else if (quote_char == '\\')
602 /* \ only counts as an escape if escaping a quote mark */
605 if (!_dbus_string_append_byte (value, '\\'))
612 if (!_dbus_string_append_byte (value, *p))
622 _dbus_assert (quote_char == '\'');
630 if (!_dbus_string_append_byte (value, *p))
644 if (quote_char == '\\')
646 if (!_dbus_string_append_byte (value, '\\'))
652 else if (quote_char == '\'')
654 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
655 "Unbalanced quotation marks in match rule");
659 _dbus_assert (quote_char == '\0');
661 /* Zero-length values are allowed */
668 _DBUS_ASSERT_ERROR_IS_SET (error);
669 _dbus_string_set_length (value, orig_len);
673 /* duplicates aren't allowed so the real legitimate max is only 6 or
674 * so. Leaving extra so we don't have to bother to update it.
675 * FIXME this is sort of busted now with arg matching, but we let
676 * you match on up to 10 args for now
678 #define MAX_RULE_TOKENS 16
680 /* this is slightly too high level to be termed a "token"
681 * but let's not be pedantic.
690 tokenize_rule (const DBusString *rule_text,
691 RuleToken tokens[MAX_RULE_TOKENS],
702 if (!_dbus_string_init (&key))
708 if (!_dbus_string_init (&value))
710 _dbus_string_free (&key);
717 while (i < MAX_RULE_TOKENS &&
718 pos < _dbus_string_get_length (rule_text))
720 _dbus_assert (tokens[i].key == NULL);
721 _dbus_assert (tokens[i].value == NULL);
723 if (!find_key (rule_text, pos, &key, &pos, error))
726 if (_dbus_string_get_length (&key) == 0)
729 if (!_dbus_string_steal_data (&key, &tokens[i].key))
735 if (!find_value (rule_text, pos, tokens[i].key, &value, &pos, error))
738 if (!_dbus_string_steal_data (&value, &tokens[i].value))
754 while (tokens[i].key || tokens[i].value)
756 dbus_free (tokens[i].key);
757 dbus_free (tokens[i].value);
758 tokens[i].key = NULL;
759 tokens[i].value = NULL;
764 _dbus_string_free (&key);
765 _dbus_string_free (&value);
771 bus_match_rule_parse_arg_match (BusMatchRule *rule,
773 const DBusString *value,
776 dbus_bool_t is_path = FALSE;
777 dbus_bool_t is_namespace = FALSE;
783 /* For now, arg0='foo' always implies that 'foo' is a
784 * DBUS_TYPE_STRING. Someday we could add an arg0type='int32' thing
785 * if we wanted, which would specify another type, in which case
786 * arg0='5' would have the 5 parsed as an int rather than string.
789 /* First we need to parse arg0 = 0, arg27 = 27 */
791 _dbus_string_init_const (&key_str, key);
792 length = _dbus_string_get_length (&key_str);
794 if (_dbus_string_get_length (&key_str) < 4)
796 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
797 "Key '%s' in match rule starts with 'arg' but lacks an arg number. Should be 'arg0' or 'arg7' for example.\n", key);
801 if (!_dbus_string_parse_uint (&key_str, 3, &arg, &end))
803 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
804 "Key '%s' in match rule starts with 'arg' but could not parse arg number. Should be 'arg0' or 'arg7' for example.\n", key);
810 if ((end + strlen ("path")) == length &&
811 _dbus_string_ends_with_c_str (&key_str, "path"))
815 else if (_dbus_string_equal_c_str (&key_str, "arg0namespace"))
817 int value_len = _dbus_string_get_length (value);
821 if (!_dbus_validate_bus_namespace (value, 0, value_len))
823 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
824 "arg0namespace='%s' is not a valid prefix of a bus name",
825 _dbus_string_get_const_data (value));
831 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
832 "Key '%s' in match rule contains junk after argument number (%u). Only 'arg%upath' (for example) or 'arg0namespace' are valid", key, arg, arg);
837 /* If we didn't check this we could allocate a huge amount of RAM */
838 if (arg > DBUS_MAXIMUM_MATCH_RULE_ARG_NUMBER)
840 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
841 "Key '%s' in match rule has arg number %lu but the maximum is %d.\n", key, (unsigned long) arg, DBUS_MAXIMUM_MATCH_RULE_ARG_NUMBER);
845 if ((rule->flags & BUS_MATCH_ARGS) &&
846 rule->args_len > (int) arg &&
847 rule->args[arg] != NULL)
849 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
850 "Argument %d matched more than once in match rule\n", key);
854 if (!bus_match_rule_set_arg (rule, arg, value, is_path, is_namespace))
863 _DBUS_ASSERT_ERROR_IS_SET (error);
868 * The format is comma-separated with strings quoted with single quotes
869 * as for the shell (to escape a literal single quote, use '\'').
871 * type='signal',sender='org.freedesktop.DBus',interface='org.freedesktop.DBus',member='Foo',
872 * path='/bar/foo',destination=':452345.34'
876 bus_match_rule_parse (DBusConnection *matches_go_to,
877 const DBusString *rule_text,
881 RuleToken tokens[MAX_RULE_TOKENS+1]; /* NULL termination + 1 */
884 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
886 if (_dbus_string_get_length (rule_text) > DBUS_MAXIMUM_MATCH_RULE_LENGTH)
888 dbus_set_error (error, DBUS_ERROR_LIMITS_EXCEEDED,
889 "Match rule text is %d bytes, maximum is %d",
890 _dbus_string_get_length (rule_text),
891 DBUS_MAXIMUM_MATCH_RULE_LENGTH);
895 memset (tokens, '\0', sizeof (tokens));
897 rule = bus_match_rule_new (matches_go_to);
904 if (!tokenize_rule (rule_text, tokens, error))
908 while (tokens[i].key != NULL)
912 const char *key = tokens[i].key;
913 const char *value = tokens[i].value;
915 _dbus_string_init_const (&tmp_str, value);
916 len = _dbus_string_get_length (&tmp_str);
918 if (strcmp (key, "type") == 0)
922 if (rule->flags & BUS_MATCH_MESSAGE_TYPE)
924 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
925 "Key %s specified twice in match rule\n", key);
929 t = dbus_message_type_from_string (value);
931 if (t == DBUS_MESSAGE_TYPE_INVALID)
933 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
934 "Invalid message type (%s) in match rule\n", value);
938 if (!bus_match_rule_set_message_type (rule, t))
944 else if (strcmp (key, "sender") == 0)
946 if (rule->flags & BUS_MATCH_SENDER)
948 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
949 "Key %s specified twice in match rule\n", key);
953 if (!_dbus_validate_bus_name (&tmp_str, 0, len))
955 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
956 "Sender name '%s' is invalid\n", value);
960 if (!bus_match_rule_set_sender (rule, value))
966 else if (strcmp (key, "interface") == 0)
968 if (rule->flags & BUS_MATCH_INTERFACE)
970 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
971 "Key %s specified twice in match rule\n", key);
975 if (!_dbus_validate_interface (&tmp_str, 0, len))
977 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
978 "Interface name '%s' is invalid\n", value);
982 if (!bus_match_rule_set_interface (rule, value))
988 else if (strcmp (key, "member") == 0)
990 if (rule->flags & BUS_MATCH_MEMBER)
992 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
993 "Key %s specified twice in match rule\n", key);
997 if (!_dbus_validate_member (&tmp_str, 0, len))
999 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
1000 "Member name '%s' is invalid\n", value);
1004 if (!bus_match_rule_set_member (rule, value))
1006 BUS_SET_OOM (error);
1010 else if (strcmp (key, "path") == 0 ||
1011 strcmp (key, "path_namespace") == 0)
1013 dbus_bool_t is_namespace = (strcmp (key, "path_namespace") == 0);
1015 if (rule->flags & (BUS_MATCH_PATH | BUS_MATCH_PATH_NAMESPACE))
1017 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
1018 "path or path_namespace specified twice in match rule\n");
1022 if (!_dbus_validate_path (&tmp_str, 0, len))
1024 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
1025 "Path '%s' is invalid\n", value);
1029 if (!bus_match_rule_set_path (rule, value, is_namespace))
1031 BUS_SET_OOM (error);
1035 else if (strcmp (key, "destination") == 0)
1037 if (rule->flags & BUS_MATCH_DESTINATION)
1039 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
1040 "Key %s specified twice in match rule\n", key);
1044 if (!_dbus_validate_bus_name (&tmp_str, 0, len))
1046 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
1047 "Destination name '%s' is invalid\n", value);
1051 if (!bus_match_rule_set_destination (rule, value))
1053 BUS_SET_OOM (error);
1057 else if (strcmp (key, "eavesdrop") == 0)
1059 /* do not detect "eavesdrop" being used more than once in rule:
1060 * 1) it's not possible, it's only in the flags
1061 * 2) it might be used twice to disable eavesdropping when it's
1062 * automatically added (eg dbus-monitor/bustle) */
1064 /* we accept only "true|false" as possible values */
1065 if ((strcmp (value, "true") == 0))
1067 bus_match_rule_set_client_is_eavesdropping (rule, TRUE);
1069 else if (strcmp (value, "false") == 0)
1071 bus_match_rule_set_client_is_eavesdropping (rule, FALSE);
1075 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
1076 "eavesdrop='%s' is invalid, "
1077 "it should be 'true' or 'false'\n",
1082 else if (strncmp (key, "arg", 3) == 0)
1084 if (!bus_match_rule_parse_arg_match (rule, key, &tmp_str, error))
1089 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_INVALID,
1090 "Unknown key \"%s\" in match rule",
1102 _DBUS_ASSERT_ERROR_IS_SET (error);
1105 bus_match_rule_unref (rule);
1112 while (tokens[i].key || tokens[i].value)
1114 _dbus_assert (i < MAX_RULE_TOKENS);
1115 dbus_free (tokens[i].key);
1116 dbus_free (tokens[i].value);
1123 typedef struct RulePool RulePool;
1126 /* Maps non-NULL interface names to non-NULL (DBusList **)s */
1127 DBusHashTable *rules_by_iface;
1129 /* List of BusMatchRules which don't specify an interface */
1130 DBusList *rules_without_iface;
1133 struct BusMatchmaker
1137 /* Pools of rules, grouped by the type of message they match. 0
1138 * (DBUS_MESSAGE_TYPE_INVALID) represents rules that do not specify a message
1141 RulePool rules_by_type[DBUS_NUM_MESSAGE_TYPES];
1145 rule_list_free (DBusList **rules)
1147 while (*rules != NULL)
1151 rule = (*rules)->data;
1152 bus_match_rule_unref (rule);
1153 _dbus_list_remove_link (rules, *rules);
1158 rule_list_ptr_free (DBusList **list)
1160 /* We have to cope with NULL because the hash table frees the "existing"
1161 * value (which is NULL) when creating a new table entry...
1165 rule_list_free (list);
1171 bus_matchmaker_new (void)
1173 BusMatchmaker *matchmaker;
1176 matchmaker = dbus_new0 (BusMatchmaker, 1);
1177 if (matchmaker == NULL)
1180 matchmaker->refcount = 1;
1182 for (i = DBUS_MESSAGE_TYPE_INVALID; i < DBUS_NUM_MESSAGE_TYPES; i++)
1184 RulePool *p = matchmaker->rules_by_type + i;
1186 p->rules_by_iface = _dbus_hash_table_new (DBUS_HASH_STRING,
1187 dbus_free, (DBusFreeFunction) rule_list_ptr_free);
1189 if (p->rules_by_iface == NULL)
1196 for (i = DBUS_MESSAGE_TYPE_INVALID; i < DBUS_NUM_MESSAGE_TYPES; i++)
1198 RulePool *p = matchmaker->rules_by_type + i;
1200 if (p->rules_by_iface == NULL)
1203 _dbus_hash_table_unref (p->rules_by_iface);
1205 dbus_free (matchmaker);
1211 bus_matchmaker_get_rules (BusMatchmaker *matchmaker,
1213 const char *interface,
1218 _dbus_assert (message_type >= 0);
1219 _dbus_assert (message_type < DBUS_NUM_MESSAGE_TYPES);
1221 _dbus_verbose ("Looking up rules for message_type %d, interface %s\n",
1223 interface != NULL ? interface : "<null>");
1225 p = matchmaker->rules_by_type + message_type;
1227 if (interface == NULL)
1229 return &p->rules_without_iface;
1235 list = _dbus_hash_table_lookup_string (p->rules_by_iface, interface);
1237 if (list == NULL && create)
1239 char *dupped_interface;
1241 list = dbus_new0 (DBusList *, 1);
1245 dupped_interface = _dbus_strdup (interface);
1246 if (dupped_interface == NULL)
1252 _dbus_verbose ("Adding list for type %d, iface %s\n", message_type,
1255 if (!_dbus_hash_table_insert_string (p->rules_by_iface,
1256 dupped_interface, list))
1259 dbus_free (dupped_interface);
1269 bus_matchmaker_gc_rules (BusMatchmaker *matchmaker,
1271 const char *interface,
1276 if (interface == NULL)
1282 _dbus_verbose ("GCing HT entry for message_type %u, interface %s\n",
1283 message_type, interface);
1285 p = matchmaker->rules_by_type + message_type;
1287 _dbus_assert (_dbus_hash_table_lookup_string (p->rules_by_iface, interface)
1290 _dbus_hash_table_remove_string (p->rules_by_iface, interface);
1294 bus_matchmaker_ref (BusMatchmaker *matchmaker)
1296 _dbus_assert (matchmaker->refcount > 0);
1298 matchmaker->refcount += 1;
1304 bus_matchmaker_unref (BusMatchmaker *matchmaker)
1306 _dbus_assert (matchmaker->refcount > 0);
1308 matchmaker->refcount -= 1;
1309 if (matchmaker->refcount == 0)
1313 for (i = DBUS_MESSAGE_TYPE_INVALID; i < DBUS_NUM_MESSAGE_TYPES; i++)
1315 RulePool *p = matchmaker->rules_by_type + i;
1317 _dbus_hash_table_unref (p->rules_by_iface);
1318 rule_list_free (&p->rules_without_iface);
1321 dbus_free (matchmaker);
1325 /* The rule can't be modified after it's added. */
1327 bus_matchmaker_add_rule (BusMatchmaker *matchmaker,
1332 _dbus_assert (bus_connection_is_active (rule->matches_go_to));
1334 _dbus_verbose ("Adding rule with message_type %d, interface %s\n",
1336 rule->interface != NULL ? rule->interface : "<null>");
1338 rules = bus_matchmaker_get_rules (matchmaker, rule->message_type,
1339 rule->interface, TRUE);
1344 if (!_dbus_list_append (rules, rule))
1347 if (!bus_connection_add_match_rule (rule->matches_go_to, rule))
1349 _dbus_list_remove_last (rules, rule);
1350 bus_matchmaker_gc_rules (matchmaker, rule->message_type,
1351 rule->interface, rules);
1355 bus_match_rule_ref (rule);
1357 #ifdef DBUS_ENABLE_VERBOSE_MODE
1359 char *s = match_rule_to_string (rule);
1361 _dbus_verbose ("Added match rule %s to connection %p\n",
1362 s, rule->matches_go_to);
1371 match_rule_equal (BusMatchRule *a,
1374 if (a->flags != b->flags)
1377 if (a->matches_go_to != b->matches_go_to)
1380 if ((a->flags & BUS_MATCH_MESSAGE_TYPE) &&
1381 a->message_type != b->message_type)
1384 if ((a->flags & BUS_MATCH_MEMBER) &&
1385 strcmp (a->member, b->member) != 0)
1388 if ((a->flags & BUS_MATCH_PATH) &&
1389 strcmp (a->path, b->path) != 0)
1392 if ((a->flags & BUS_MATCH_INTERFACE) &&
1393 strcmp (a->interface, b->interface) != 0)
1396 if ((a->flags & BUS_MATCH_SENDER) &&
1397 strcmp (a->sender, b->sender) != 0)
1400 if ((a->flags & BUS_MATCH_DESTINATION) &&
1401 strcmp (a->destination, b->destination) != 0)
1404 /* we already compared the value of flags, and
1405 * BUS_MATCH_CLIENT_IS_EAVESDROPPING does not have another struct member */
1407 if (a->flags & BUS_MATCH_ARGS)
1411 if (a->args_len != b->args_len)
1415 while (i < a->args_len)
1419 if ((a->args[i] != NULL) != (b->args[i] != NULL))
1422 if (a->arg_lens[i] != b->arg_lens[i])
1425 length = a->arg_lens[i] & ~BUS_MATCH_ARG_FLAGS;
1427 if (a->args[i] != NULL)
1429 _dbus_assert (b->args[i] != NULL);
1430 if (memcmp (a->args[i], b->args[i], length) != 0)
1442 bus_matchmaker_remove_rule_link (DBusList **rules,
1445 BusMatchRule *rule = link->data;
1447 bus_connection_remove_match_rule (rule->matches_go_to, rule);
1448 _dbus_list_remove_link (rules, link);
1450 #ifdef DBUS_ENABLE_VERBOSE_MODE
1452 char *s = match_rule_to_string (rule);
1454 _dbus_verbose ("Removed match rule %s for connection %p\n",
1455 s, rule->matches_go_to);
1460 bus_match_rule_unref (rule);
1464 bus_matchmaker_remove_rule (BusMatchmaker *matchmaker,
1469 _dbus_verbose ("Removing rule with message_type %d, interface %s\n",
1471 rule->interface != NULL ? rule->interface : "<null>");
1473 bus_connection_remove_match_rule (rule->matches_go_to, rule);
1475 rules = bus_matchmaker_get_rules (matchmaker, rule->message_type,
1476 rule->interface, FALSE);
1478 /* We should only be asked to remove a rule by identity right after it was
1479 * added, so there should be a list for it.
1481 _dbus_assert (rules != NULL);
1483 _dbus_list_remove (rules, rule);
1484 bus_matchmaker_gc_rules (matchmaker, rule->message_type, rule->interface,
1487 #ifdef DBUS_ENABLE_VERBOSE_MODE
1489 char *s = match_rule_to_string (rule);
1491 _dbus_verbose ("Removed match rule %s for connection %p\n",
1492 s, rule->matches_go_to);
1497 bus_match_rule_unref (rule);
1500 /* Remove a single rule which is equal to the given rule by value */
1502 bus_matchmaker_remove_rule_by_value (BusMatchmaker *matchmaker,
1503 BusMatchRule *value,
1507 DBusList *link = NULL;
1509 _dbus_verbose ("Removing rule by value with message_type %d, interface %s\n",
1510 value->message_type,
1511 value->interface != NULL ? value->interface : "<null>");
1513 rules = bus_matchmaker_get_rules (matchmaker, value->message_type,
1514 value->interface, FALSE);
1518 /* we traverse backward because bus_connection_remove_match_rule()
1519 * removes the most-recently-added rule
1521 link = _dbus_list_get_last_link (rules);
1522 while (link != NULL)
1528 prev = _dbus_list_get_prev_link (rules, link);
1530 if (match_rule_equal (rule, value))
1532 bus_matchmaker_remove_rule_link (rules, link);
1542 dbus_set_error (error, DBUS_ERROR_MATCH_RULE_NOT_FOUND,
1543 "The given match rule wasn't found and can't be removed");
1547 bus_matchmaker_gc_rules (matchmaker, value->message_type, value->interface,
1554 rule_list_remove_by_connection (DBusList **rules,
1555 DBusConnection *connection)
1559 link = _dbus_list_get_first_link (rules);
1560 while (link != NULL)
1566 next = _dbus_list_get_next_link (rules, link);
1568 if (rule->matches_go_to == connection)
1570 bus_matchmaker_remove_rule_link (rules, link);
1572 else if (((rule->flags & BUS_MATCH_SENDER) && *rule->sender == ':') ||
1573 ((rule->flags & BUS_MATCH_DESTINATION) && *rule->destination == ':'))
1575 /* The rule matches to/from a base service, see if it's the
1576 * one being disconnected, since we know this service name
1577 * will never be recycled.
1581 name = bus_connection_get_name (connection);
1582 _dbus_assert (name != NULL); /* because we're an active connection */
1584 if (((rule->flags & BUS_MATCH_SENDER) &&
1585 strcmp (rule->sender, name) == 0) ||
1586 ((rule->flags & BUS_MATCH_DESTINATION) &&
1587 strcmp (rule->destination, name) == 0))
1589 bus_matchmaker_remove_rule_link (rules, link);
1598 bus_matchmaker_disconnected (BusMatchmaker *matchmaker,
1599 DBusConnection *connection)
1605 * This scans all match rules on the bus. We could avoid that
1606 * for the rules belonging to the connection, since we keep
1607 * a list of those; but for the rules that just refer to
1608 * the connection we'd need to do something more elaborate.
1611 _dbus_assert (bus_connection_is_active (connection));
1613 _dbus_verbose ("Removing all rules for connection %p\n", connection);
1615 for (i = DBUS_MESSAGE_TYPE_INVALID; i < DBUS_NUM_MESSAGE_TYPES; i++)
1617 RulePool *p = matchmaker->rules_by_type + i;
1620 rule_list_remove_by_connection (&p->rules_without_iface, connection);
1622 _dbus_hash_iter_init (p->rules_by_iface, &iter);
1623 while (_dbus_hash_iter_next (&iter))
1625 DBusList **items = _dbus_hash_iter_get_value (&iter);
1627 rule_list_remove_by_connection (items, connection);
1630 _dbus_hash_iter_remove_entry (&iter);
1636 connection_is_primary_owner (DBusConnection *connection,
1637 const char *service_name)
1639 BusService *service;
1641 BusRegistry *registry;
1643 _dbus_assert (connection != NULL);
1645 registry = bus_connection_get_registry (connection);
1647 _dbus_string_init_const (&str, service_name);
1648 service = bus_registry_lookup (registry, &str);
1650 if (service == NULL)
1651 return FALSE; /* Service doesn't exist so connection can't own it. */
1653 return bus_service_get_primary_owners_connection (service) == connection;
1657 str_has_prefix (const char *str, const char *prefix)
1660 prefix_len = strlen (prefix);
1661 if (strncmp (str, prefix, prefix_len) == 0)
1668 match_rule_matches (BusMatchRule *rule,
1669 DBusConnection *sender,
1670 DBusConnection *addressed_recipient,
1671 DBusMessage *message,
1672 BusMatchFlags already_matched)
1674 dbus_bool_t wants_to_eavesdrop = FALSE;
1677 /* All features of the match rule are AND'd together,
1678 * so FALSE if any of them don't match.
1681 /* sender/addressed_recipient of #NULL may mean bus driver,
1682 * or for addressed_recipient may mean a message with no
1683 * specific recipient (i.e. a signal)
1686 /* Don't bother re-matching features we've already checked implicitly. */
1687 flags = rule->flags & (~already_matched);
1689 if (flags & BUS_MATCH_CLIENT_IS_EAVESDROPPING)
1690 wants_to_eavesdrop = TRUE;
1692 if (flags & BUS_MATCH_MESSAGE_TYPE)
1694 _dbus_assert (rule->message_type != DBUS_MESSAGE_TYPE_INVALID);
1696 if (rule->message_type != dbus_message_get_type (message))
1700 if (flags & BUS_MATCH_INTERFACE)
1704 _dbus_assert (rule->interface != NULL);
1706 iface = dbus_message_get_interface (message);
1710 if (strcmp (iface, rule->interface) != 0)
1714 if (flags & BUS_MATCH_MEMBER)
1718 _dbus_assert (rule->member != NULL);
1720 member = dbus_message_get_member (message);
1724 if (strcmp (member, rule->member) != 0)
1728 if (flags & BUS_MATCH_SENDER)
1730 _dbus_assert (rule->sender != NULL);
1734 if (strcmp (rule->sender,
1735 DBUS_SERVICE_DBUS) != 0)
1740 if (!connection_is_primary_owner (sender, rule->sender))
1745 /* Note: this part is relevant for eavesdropper rules:
1747 * 1) rule has a destination to be matched
1748 * (flag BUS_MATCH_DESTINATION present). Rule will match if:
1749 * - rule->destination matches the addressed_recipient
1751 * - wants_to_eavesdrop=TRUE
1753 * Note: (the case in which addressed_recipient is the actual rule owner
1754 * is handled elsewere in dispatch.c:bus_dispatch_matches().
1756 * 2) rule has no destination. Rule will match if:
1757 * - message has no specified destination (ie broadcasts)
1758 * (Note: this will rule out unicast method calls and unicast signals,
1759 * fixing FDO#269748)
1761 * - wants_to_eavesdrop=TRUE (destination-catch-all situation)
1763 if (flags & BUS_MATCH_DESTINATION)
1765 const char *destination;
1767 _dbus_assert (rule->destination != NULL);
1769 destination = dbus_message_get_destination (message);
1770 if (destination == NULL)
1771 /* broadcast, but this rule specified a destination: no match */
1774 /* rule owner does not intend to eavesdrop: we'll deliver only msgs
1775 * directed to it, NOT MATCHING */
1776 if (!wants_to_eavesdrop)
1779 if (addressed_recipient == NULL)
1781 if (strcmp (rule->destination,
1782 DBUS_SERVICE_DBUS) != 0)
1787 if (!connection_is_primary_owner (addressed_recipient, rule->destination))
1790 } else { /* no destination in rule */
1791 dbus_bool_t msg_is_broadcast;
1793 _dbus_assert (rule->destination == NULL);
1795 msg_is_broadcast = (dbus_message_get_destination (message) == NULL);
1797 if (!wants_to_eavesdrop && !msg_is_broadcast)
1800 /* if we are here rule owner intends to eavesdrop
1802 * message is being broadcasted */
1805 if (flags & BUS_MATCH_PATH)
1809 _dbus_assert (rule->path != NULL);
1811 path = dbus_message_get_path (message);
1815 if (strcmp (path, rule->path) != 0)
1819 if (flags & BUS_MATCH_PATH_NAMESPACE)
1824 _dbus_assert (rule->path != NULL);
1826 path = dbus_message_get_path (message);
1830 if (!str_has_prefix (path, rule->path))
1833 len = strlen (rule->path);
1835 /* Check that the actual argument is within the expected
1836 * namespace, rather than just starting with that string,
1837 * by checking that the matched prefix is followed by a '/'
1838 * or the end of the path.
1840 if (path[len] != '\0' && path[len] != '/')
1844 if (flags & BUS_MATCH_ARGS)
1847 DBusMessageIter iter;
1849 _dbus_assert (rule->args != NULL);
1851 dbus_message_iter_init (message, &iter);
1854 while (i < rule->args_len)
1857 const char *expected_arg;
1858 int expected_length;
1859 dbus_bool_t is_path, is_namespace;
1861 expected_arg = rule->args[i];
1862 expected_length = rule->arg_lens[i] & ~BUS_MATCH_ARG_FLAGS;
1863 is_path = (rule->arg_lens[i] & BUS_MATCH_ARG_IS_PATH) != 0;
1864 is_namespace = (rule->arg_lens[i] & BUS_MATCH_ARG_NAMESPACE) != 0;
1866 current_type = dbus_message_iter_get_arg_type (&iter);
1868 if (expected_arg != NULL)
1870 const char *actual_arg;
1873 if (current_type != DBUS_TYPE_STRING &&
1874 (!is_path || current_type != DBUS_TYPE_OBJECT_PATH))
1878 dbus_message_iter_get_basic (&iter, &actual_arg);
1879 _dbus_assert (actual_arg != NULL);
1881 actual_length = strlen (actual_arg);
1885 if (actual_length < expected_length &&
1886 actual_arg[actual_length - 1] != '/')
1889 if (expected_length < actual_length &&
1890 expected_arg[expected_length - 1] != '/')
1893 if (memcmp (actual_arg, expected_arg,
1894 MIN (actual_length, expected_length)) != 0)
1897 else if (is_namespace)
1899 if (expected_length > actual_length)
1902 /* If the actual argument doesn't start with the expected
1903 * namespace, then we don't match.
1905 if (memcmp (expected_arg, actual_arg, expected_length) != 0)
1908 if (expected_length < actual_length)
1910 /* Check that the actual argument is within the expected
1911 * namespace, rather than just starting with that string,
1912 * by checking that the matched prefix ends in a '.'.
1914 * This doesn't stop "foo.bar." matching "foo.bar..baz"
1915 * which is an invalid namespace, but at some point the
1916 * daemon can't cover up for broken services.
1918 if (actual_arg[expected_length] != '.')
1921 /* otherwise we had an exact match. */
1925 if (expected_length != actual_length ||
1926 memcmp (expected_arg, actual_arg, expected_length) != 0)
1932 if (current_type != DBUS_TYPE_INVALID)
1933 dbus_message_iter_next (&iter);
1943 get_recipients_from_list (DBusList **rules,
1944 DBusConnection *sender,
1945 DBusConnection *addressed_recipient,
1946 DBusMessage *message,
1947 DBusList **recipients_p)
1954 link = _dbus_list_get_first_link (rules);
1955 while (link != NULL)
1961 #ifdef DBUS_ENABLE_VERBOSE_MODE
1963 char *s = match_rule_to_string (rule);
1965 _dbus_verbose ("Checking whether message matches rule %s for connection %p\n",
1966 s, rule->matches_go_to);
1971 if (match_rule_matches (rule,
1972 sender, addressed_recipient, message,
1973 BUS_MATCH_MESSAGE_TYPE | BUS_MATCH_INTERFACE))
1975 _dbus_verbose ("Rule matched\n");
1977 /* Append to the list if we haven't already */
1978 if (bus_connection_mark_stamp (rule->matches_go_to))
1980 if (!_dbus_list_append (recipients_p, rule->matches_go_to))
1985 _dbus_verbose ("Connection already receiving this message, so not adding again\n");
1989 link = _dbus_list_get_next_link (rules, link);
1996 bus_matchmaker_get_recipients (BusMatchmaker *matchmaker,
1997 BusConnections *connections,
1998 DBusConnection *sender,
1999 DBusConnection *addressed_recipient,
2000 DBusMessage *message,
2001 DBusList **recipients_p)
2004 const char *interface;
2005 DBusList **neither, **just_type, **just_iface, **both;
2007 _dbus_assert (*recipients_p == NULL);
2009 /* This avoids sending same message to the same connection twice.
2010 * Purpose of the stamp instead of a bool is to avoid iterating over
2011 * all connections resetting the bool each time.
2013 bus_connections_increment_stamp (connections);
2015 /* addressed_recipient is already receiving the message, don't add to list.
2016 * NULL addressed_recipient means either bus driver, or this is a signal
2017 * and thus lacks a specific addressed_recipient.
2019 if (addressed_recipient != NULL)
2020 bus_connection_mark_stamp (addressed_recipient);
2022 type = dbus_message_get_type (message);
2023 interface = dbus_message_get_interface (message);
2025 neither = bus_matchmaker_get_rules (matchmaker, DBUS_MESSAGE_TYPE_INVALID,
2027 just_type = just_iface = both = NULL;
2029 if (interface != NULL)
2030 just_iface = bus_matchmaker_get_rules (matchmaker,
2031 DBUS_MESSAGE_TYPE_INVALID, interface, FALSE);
2033 if (type > DBUS_MESSAGE_TYPE_INVALID && type < DBUS_NUM_MESSAGE_TYPES)
2035 just_type = bus_matchmaker_get_rules (matchmaker, type, NULL, FALSE);
2037 if (interface != NULL)
2038 both = bus_matchmaker_get_rules (matchmaker, type, interface, FALSE);
2041 if (!(get_recipients_from_list (neither, sender, addressed_recipient,
2042 message, recipients_p) &&
2043 get_recipients_from_list (just_iface, sender, addressed_recipient,
2044 message, recipients_p) &&
2045 get_recipients_from_list (just_type, sender, addressed_recipient,
2046 message, recipients_p) &&
2047 get_recipients_from_list (both, sender, addressed_recipient,
2048 message, recipients_p)))
2050 _dbus_list_clear (recipients_p);
2057 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
2061 static BusMatchRule*
2062 check_parse (dbus_bool_t should_succeed,
2069 dbus_error_init (&error);
2071 _dbus_string_init_const (&str, text);
2073 rule = bus_match_rule_parse (NULL, &str, &error);
2074 if (dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY))
2076 dbus_error_free (&error);
2080 if (should_succeed && rule == NULL)
2082 _dbus_warn ("Failed to parse: %s: %s: \"%s\"\n",
2083 error.name, error.message,
2084 _dbus_string_get_const_data (&str));
2088 if (!should_succeed && rule != NULL)
2090 _dbus_warn ("Failed to fail to parse: \"%s\"\n",
2091 _dbus_string_get_const_data (&str));
2095 dbus_error_free (&error);
2101 assert_large_rule (BusMatchRule *rule)
2103 _dbus_assert (rule->flags & BUS_MATCH_MESSAGE_TYPE);
2104 _dbus_assert (rule->flags & BUS_MATCH_SENDER);
2105 _dbus_assert (rule->flags & BUS_MATCH_INTERFACE);
2106 _dbus_assert (rule->flags & BUS_MATCH_MEMBER);
2107 _dbus_assert (rule->flags & BUS_MATCH_DESTINATION);
2108 _dbus_assert (rule->flags & BUS_MATCH_PATH);
2110 _dbus_assert (rule->message_type == DBUS_MESSAGE_TYPE_SIGNAL);
2111 _dbus_assert (rule->interface != NULL);
2112 _dbus_assert (rule->member != NULL);
2113 _dbus_assert (rule->sender != NULL);
2114 _dbus_assert (rule->destination != NULL);
2115 _dbus_assert (rule->path != NULL);
2117 _dbus_assert (strcmp (rule->interface, "org.freedesktop.DBusInterface") == 0);
2118 _dbus_assert (strcmp (rule->sender, "org.freedesktop.DBusSender") == 0);
2119 _dbus_assert (strcmp (rule->member, "Foo") == 0);
2120 _dbus_assert (strcmp (rule->path, "/bar/foo") == 0);
2121 _dbus_assert (strcmp (rule->destination, ":452345.34") == 0);
2125 test_parsing (void *data)
2129 rule = check_parse (TRUE, "type='signal',sender='org.freedesktop.DBusSender',interface='org.freedesktop.DBusInterface',member='Foo',path='/bar/foo',destination=':452345.34'");
2132 assert_large_rule (rule);
2133 bus_match_rule_unref (rule);
2136 /* With extra whitespace and useless quotes */
2137 rule = check_parse (TRUE, " type='signal', \tsender='org.freedes''ktop.DBusSender', interface='org.freedesktop.DBusInterface''''', \tmember='Foo',path='/bar/foo',destination=':452345.34'''''");
2140 assert_large_rule (rule);
2141 bus_match_rule_unref (rule);
2145 /* A simple signal connection */
2146 rule = check_parse (TRUE, "type='signal',path='/foo',interface='org.Bar'");
2149 _dbus_assert (rule->flags & BUS_MATCH_MESSAGE_TYPE);
2150 _dbus_assert (rule->flags & BUS_MATCH_INTERFACE);
2151 _dbus_assert (rule->flags & BUS_MATCH_PATH);
2153 _dbus_assert (rule->message_type == DBUS_MESSAGE_TYPE_SIGNAL);
2154 _dbus_assert (rule->interface != NULL);
2155 _dbus_assert (rule->path != NULL);
2157 _dbus_assert (strcmp (rule->interface, "org.Bar") == 0);
2158 _dbus_assert (strcmp (rule->path, "/foo") == 0);
2160 bus_match_rule_unref (rule);
2164 rule = check_parse (TRUE, "arg0='foo'");
2167 _dbus_assert (rule->flags == BUS_MATCH_ARGS);
2168 _dbus_assert (rule->args != NULL);
2169 _dbus_assert (rule->args_len == 1);
2170 _dbus_assert (rule->args[0] != NULL);
2171 _dbus_assert (rule->args[1] == NULL);
2172 _dbus_assert (strcmp (rule->args[0], "foo") == 0);
2174 bus_match_rule_unref (rule);
2177 rule = check_parse (TRUE, "arg1='foo'");
2180 _dbus_assert (rule->flags == BUS_MATCH_ARGS);
2181 _dbus_assert (rule->args != NULL);
2182 _dbus_assert (rule->args_len == 2);
2183 _dbus_assert (rule->args[0] == NULL);
2184 _dbus_assert (rule->args[1] != NULL);
2185 _dbus_assert (rule->args[2] == NULL);
2186 _dbus_assert (strcmp (rule->args[1], "foo") == 0);
2188 bus_match_rule_unref (rule);
2191 rule = check_parse (TRUE, "arg2='foo'");
2194 _dbus_assert (rule->flags == BUS_MATCH_ARGS);
2195 _dbus_assert (rule->args != NULL);
2196 _dbus_assert (rule->args_len == 3);
2197 _dbus_assert (rule->args[0] == NULL);
2198 _dbus_assert (rule->args[1] == NULL);
2199 _dbus_assert (rule->args[2] != NULL);
2200 _dbus_assert (rule->args[3] == NULL);
2201 _dbus_assert (strcmp (rule->args[2], "foo") == 0);
2203 bus_match_rule_unref (rule);
2206 rule = check_parse (TRUE, "arg40='foo'");
2209 _dbus_assert (rule->flags == BUS_MATCH_ARGS);
2210 _dbus_assert (rule->args != NULL);
2211 _dbus_assert (rule->args_len == 41);
2212 _dbus_assert (rule->args[0] == NULL);
2213 _dbus_assert (rule->args[1] == NULL);
2214 _dbus_assert (rule->args[40] != NULL);
2215 _dbus_assert (rule->args[41] == NULL);
2216 _dbus_assert (strcmp (rule->args[40], "foo") == 0);
2218 bus_match_rule_unref (rule);
2221 rule = check_parse (TRUE, "arg63='foo'");
2224 _dbus_assert (rule->flags == BUS_MATCH_ARGS);
2225 _dbus_assert (rule->args != NULL);
2226 _dbus_assert (rule->args_len == 64);
2227 _dbus_assert (rule->args[0] == NULL);
2228 _dbus_assert (rule->args[1] == NULL);
2229 _dbus_assert (rule->args[63] != NULL);
2230 _dbus_assert (rule->args[64] == NULL);
2231 _dbus_assert (strcmp (rule->args[63], "foo") == 0);
2233 bus_match_rule_unref (rule);
2236 rule = check_parse (TRUE, "arg7path='/foo'");
2239 _dbus_assert (rule->flags = BUS_MATCH_ARGS);
2240 _dbus_assert (rule->args != NULL);
2241 _dbus_assert (rule->args_len == 8);
2242 _dbus_assert (rule->args[7] != NULL);
2243 _dbus_assert (rule->args[8] == NULL);
2244 _dbus_assert (strcmp (rule->args[7], "/foo") == 0);
2245 _dbus_assert ((rule->arg_lens[7] & BUS_MATCH_ARG_IS_PATH)
2246 == BUS_MATCH_ARG_IS_PATH);
2248 bus_match_rule_unref (rule);
2251 /* Arg 0 namespace matches */
2252 rule = check_parse (TRUE, "arg0namespace='foo'");
2255 _dbus_assert (rule->flags == BUS_MATCH_ARGS);
2256 _dbus_assert (rule->args != NULL);
2257 _dbus_assert (rule->args_len == 1);
2258 _dbus_assert (strcmp (rule->args[0], "foo") == 0);
2259 _dbus_assert ((rule->arg_lens[0] & BUS_MATCH_ARG_NAMESPACE)
2260 == BUS_MATCH_ARG_NAMESPACE);
2262 bus_match_rule_unref (rule);
2265 rule = check_parse (TRUE, "arg0namespace='foo.bar'");
2268 _dbus_assert (rule->flags == BUS_MATCH_ARGS);
2269 _dbus_assert (rule->args != NULL);
2270 _dbus_assert (rule->args_len == 1);
2271 _dbus_assert (strcmp (rule->args[0], "foo.bar") == 0);
2272 _dbus_assert ((rule->arg_lens[0] & BUS_MATCH_ARG_NAMESPACE)
2273 == BUS_MATCH_ARG_NAMESPACE);
2275 bus_match_rule_unref (rule);
2278 /* Only arg0namespace is supported. */
2279 rule = check_parse (FALSE, "arg1namespace='foo'");
2280 _dbus_assert (rule == NULL);
2282 /* An empty string isn't a valid namespace prefix (you should just not
2283 * specify this key at all).
2285 rule = check_parse (FALSE, "arg0namespace=''");
2286 _dbus_assert (rule == NULL);
2288 /* Trailing periods aren't allowed (earlier versions of the arg0namespace
2289 * spec allowed a single trailing period, which altered the semantics) */
2290 rule = check_parse (FALSE, "arg0namespace='foo.'");
2291 _dbus_assert (rule == NULL);
2293 rule = check_parse (FALSE, "arg0namespace='foo.bar.'");
2294 _dbus_assert (rule == NULL);
2296 rule = check_parse (FALSE, "arg0namespace='foo..'");
2297 _dbus_assert (rule == NULL);
2299 rule = check_parse (FALSE, "arg0namespace='foo.bar..'");
2300 _dbus_assert (rule == NULL);
2302 /* Too-large argN */
2303 rule = check_parse (FALSE, "arg300='foo'");
2304 _dbus_assert (rule == NULL);
2305 rule = check_parse (FALSE, "arg64='foo'");
2306 _dbus_assert (rule == NULL);
2309 rule = check_parse (FALSE, "arg='foo'");
2310 _dbus_assert (rule == NULL);
2311 rule = check_parse (FALSE, "argv='foo'");
2312 _dbus_assert (rule == NULL);
2313 rule = check_parse (FALSE, "arg3junk='foo'");
2314 _dbus_assert (rule == NULL);
2315 rule = check_parse (FALSE, "argument='foo'");
2316 _dbus_assert (rule == NULL);
2318 /* Reject duplicates */
2319 rule = check_parse (FALSE, "type='signal',type='method_call'");
2320 _dbus_assert (rule == NULL);
2322 rule = check_parse (TRUE, "path_namespace='/foo/bar'");
2325 _dbus_assert (rule->flags == BUS_MATCH_PATH_NAMESPACE);
2326 _dbus_assert (rule->path != NULL);
2327 _dbus_assert (strcmp (rule->path, "/foo/bar") == 0);
2329 bus_match_rule_unref (rule);
2332 /* Almost a duplicate */
2333 rule = check_parse (FALSE, "path='/foo',path_namespace='/foo'");
2334 _dbus_assert (rule == NULL);
2336 /* Trailing / was supported in the initial proposal, but now isn't */
2337 rule = check_parse (FALSE, "path_namespace='/foo/'");
2338 _dbus_assert (rule == NULL);
2340 /* Duplicates with the argN code */
2341 rule = check_parse (FALSE, "arg0='foo',arg0='bar'");
2342 _dbus_assert (rule == NULL);
2343 rule = check_parse (FALSE, "arg3='foo',arg3='bar'");
2344 _dbus_assert (rule == NULL);
2345 rule = check_parse (FALSE, "arg30='foo',arg30='bar'");
2346 _dbus_assert (rule == NULL);
2348 /* Reject broken keys */
2349 rule = check_parse (FALSE, "blah='signal'");
2350 _dbus_assert (rule == NULL);
2352 /* Reject broken values */
2353 rule = check_parse (FALSE, "type='chouin'");
2354 _dbus_assert (rule == NULL);
2355 rule = check_parse (FALSE, "interface='abc@def++'");
2356 _dbus_assert (rule == NULL);
2357 rule = check_parse (FALSE, "service='youpi'");
2358 _dbus_assert (rule == NULL);
2360 /* Allow empty rule */
2361 rule = check_parse (TRUE, "");
2364 _dbus_assert (rule->flags == 0);
2366 bus_match_rule_unref (rule);
2369 /* All-whitespace rule is the same as empty */
2370 rule = check_parse (TRUE, " \t");
2373 _dbus_assert (rule->flags == 0);
2375 bus_match_rule_unref (rule);
2378 /* But with non-whitespace chars and no =value, it's not OK */
2379 rule = check_parse (FALSE, "type");
2380 _dbus_assert (rule == NULL);
2388 } equality_tests[] = {
2389 { "type='signal'", "type='signal'" },
2390 { "type='signal',interface='foo.bar'", "interface='foo.bar',type='signal'" },
2391 { "type='signal',member='bar'", "member='bar',type='signal'" },
2392 { "type='method_call',sender=':1.0'", "sender=':1.0',type='method_call'" },
2393 { "type='method_call',destination=':1.0'", "destination=':1.0',type='method_call'" },
2394 { "type='method_call',path='/foo/bar'", "path='/foo/bar',type='method_call'" },
2395 { "type='method_call',arg0='blah'", "arg0='blah',type='method_call'" },
2396 { "type='method_call',arg0='boo'", "arg0='boo',type='method_call'" },
2397 { "type='method_call',arg0='blah',arg1='baz'", "arg0='blah',arg1='baz',type='method_call'" },
2398 { "type='method_call',arg3='foosh'", "arg3='foosh',type='method_call'" },
2399 { "arg3='fool'", "arg3='fool'" },
2400 { "arg0namespace='fool'", "arg0namespace='fool'" },
2401 { "member='food'", "member='food'" }
2405 test_equality (void)
2410 while (i < _DBUS_N_ELEMENTS (equality_tests))
2412 BusMatchRule *first;
2413 BusMatchRule *second;
2416 first = check_parse (TRUE, equality_tests[i].first);
2417 _dbus_assert (first != NULL);
2418 second = check_parse (TRUE, equality_tests[i].second);
2419 _dbus_assert (second != NULL);
2421 if (!match_rule_equal (first, second))
2423 _dbus_warn ("rule %s and %s should have been equal\n",
2424 equality_tests[i].first,
2425 equality_tests[i].second);
2429 bus_match_rule_unref (second);
2431 /* Check that the rule is not equal to any of the
2432 * others besides its pair match
2435 while (j < _DBUS_N_ELEMENTS (equality_tests))
2439 second = check_parse (TRUE, equality_tests[j].second);
2441 if (match_rule_equal (first, second))
2443 _dbus_warn ("rule %s and %s should not have been equal\n",
2444 equality_tests[i].first,
2445 equality_tests[j].second);
2449 bus_match_rule_unref (second);
2455 bus_match_rule_unref (first);
2462 should_match_message_1[] = {
2464 "member='Frobated'",
2466 "type='signal',member='Frobated'",
2467 "type='signal',member='Frobated',arg0='foobar'",
2468 "member='Frobated',arg0='foobar'",
2469 "type='signal',arg0='foobar'",
2470 /* The definition of argXpath matches says: "As with normal argument matches,
2471 * if the argument is exactly equal to the string given in the match rule
2472 * then the rule is satisfied." So this should match (even though the
2473 * argument is not a valid path)!
2475 "arg0path='foobar'",
2476 "arg0namespace='foobar'",
2481 should_not_match_message_1[] = {
2482 "type='method_call'",
2484 "type='method_return'",
2485 "type='signal',member='Oopsed'",
2492 "arg0='foobar',arg1='abcdef'",
2493 "arg0='foobar',arg1='abcdef',arg2='abcdefghi',arg3='abcdefghi',arg4='abcdefghi'",
2494 "arg0='foobar',arg1='abcdef',arg4='abcdefghi',arg3='abcdefghi',arg2='abcdefghi'",
2496 "arg0path='foobar/'",
2498 "arg0namespace='foo'",
2499 "arg0namespace='foo',arg1='abcdef'",
2500 "arg0namespace='moo'",
2504 #define EXAMPLE_NAME "com.example.backend.foo"
2507 should_match_message_2[] = {
2508 /* EXAMPLE_NAME is in all of these namespaces */
2509 "arg0namespace='com.example.backend'",
2510 "arg0namespace='com.example'",
2511 "arg0namespace='com'",
2513 /* If the client specifies the name exactly, with no trailing period, then
2516 "arg0namespace='com.example.backend.foo'",
2522 should_not_match_message_2[] = {
2523 /* These are not even prefixes */
2524 "arg0namespace='com.example.backend.foo.bar'",
2525 "arg0namespace='com.example.backend.foobar'",
2527 /* These are prefixes, but they're not parent namespaces. */
2528 "arg0namespace='com.example.backend.fo'",
2529 "arg0namespace='com.example.backen'",
2530 "arg0namespace='com.exampl'",
2531 "arg0namespace='co'",
2537 check_matches (dbus_bool_t expected_to_match,
2539 DBusMessage *message,
2540 const char *rule_text)
2543 dbus_bool_t matched;
2545 rule = check_parse (TRUE, rule_text);
2546 _dbus_assert (rule != NULL);
2548 /* We can't test sender/destination rules since we pass NULL here */
2549 matched = match_rule_matches (rule, NULL, NULL, message, 0);
2551 if (matched != expected_to_match)
2553 _dbus_warn ("Expected rule %s to %s message %d, failed\n",
2554 rule_text, expected_to_match ?
2555 "match" : "not match", number);
2559 bus_match_rule_unref (rule);
2563 check_matching (DBusMessage *message,
2565 const char **should_match,
2566 const char **should_not_match)
2571 while (should_match[i] != NULL)
2573 check_matches (TRUE, number, message, should_match[i]);
2578 while (should_not_match[i] != NULL)
2580 check_matches (FALSE, number, message, should_not_match[i]);
2586 test_matching (void)
2588 DBusMessage *message1, *message2;
2589 const char *v_STRING;
2590 dbus_int32_t v_INT32;
2592 message1 = dbus_message_new (DBUS_MESSAGE_TYPE_SIGNAL);
2593 _dbus_assert (message1 != NULL);
2594 if (!dbus_message_set_member (message1, "Frobated"))
2595 _dbus_assert_not_reached ("oom");
2597 v_STRING = "foobar";
2599 if (!dbus_message_append_args (message1,
2600 DBUS_TYPE_STRING, &v_STRING,
2601 DBUS_TYPE_INT32, &v_INT32,
2603 _dbus_assert_not_reached ("oom");
2605 check_matching (message1, 1,
2606 should_match_message_1,
2607 should_not_match_message_1);
2609 dbus_message_unref (message1);
2611 message2 = dbus_message_new (DBUS_MESSAGE_TYPE_SIGNAL);
2612 _dbus_assert (message2 != NULL);
2613 if (!dbus_message_set_member (message2, "NameOwnerChanged"))
2614 _dbus_assert_not_reached ("oom");
2616 /* Obviously this isn't really a NameOwnerChanged signal. */
2617 v_STRING = EXAMPLE_NAME;
2618 if (!dbus_message_append_args (message2,
2619 DBUS_TYPE_STRING, &v_STRING,
2621 _dbus_assert_not_reached ("oom");
2623 check_matching (message2, 2,
2624 should_match_message_2,
2625 should_not_match_message_2);
2627 dbus_message_unref (message2);
2630 #define PATH_MATCH_RULE "arg0path='/aa/bb/'"
2632 /* This is a list of paths that should be matched by PATH_MATCH_RULE, taken
2633 * from the specification. Notice that not all of them are actually legal D-Bus
2636 * The author of this test takes no responsibility for the semantics of
2637 * this match rule key.
2639 static const char *paths_that_should_be_matched[] = {
2643 #define FIRST_VALID_PATH_WHICH_SHOULD_MATCH 3
2649 /* These paths should not be matched by PATH_MATCH_RULE. */
2650 static const char *paths_that_should_not_be_matched[] = {
2659 test_path_match (int type,
2661 const char *rule_text,
2663 dbus_bool_t should_match)
2665 DBusMessage *message = dbus_message_new (DBUS_MESSAGE_TYPE_SIGNAL);
2666 dbus_bool_t matched;
2668 _dbus_assert (message != NULL);
2669 if (!dbus_message_set_member (message, "Foo"))
2670 _dbus_assert_not_reached ("oom");
2672 if (!dbus_message_append_args (message,
2675 _dbus_assert_not_reached ("oom");
2677 matched = match_rule_matches (rule, NULL, NULL, message, 0);
2679 if (matched != should_match)
2681 _dbus_warn ("Expected rule %s to %s message "
2682 "with first arg %s of type '%c', failed\n",
2684 should_match ? "match" : "not match",
2690 dbus_message_unref (message);
2694 test_path_matching (void)
2699 rule = check_parse (TRUE, PATH_MATCH_RULE);
2700 _dbus_assert (rule != NULL);
2702 for (s = paths_that_should_be_matched; *s != NULL; s++)
2703 test_path_match (DBUS_TYPE_STRING, *s, PATH_MATCH_RULE, rule, TRUE);
2705 for (s = paths_that_should_be_matched + FIRST_VALID_PATH_WHICH_SHOULD_MATCH;
2707 test_path_match (DBUS_TYPE_OBJECT_PATH, *s, PATH_MATCH_RULE, rule, TRUE);
2709 for (s = paths_that_should_not_be_matched; *s != NULL; s++)
2711 test_path_match (DBUS_TYPE_STRING, *s, PATH_MATCH_RULE, rule, FALSE);
2712 test_path_match (DBUS_TYPE_OBJECT_PATH, *s, PATH_MATCH_RULE, rule, FALSE);
2715 bus_match_rule_unref (rule);
2719 path_namespace_should_match_message_1[] = {
2720 "type='signal',path_namespace='/foo'",
2721 "type='signal',path_namespace='/foo/TheObjectManager'",
2726 path_namespace_should_not_match_message_1[] = {
2727 "type='signal',path_namespace='/bar'",
2728 "type='signal',path_namespace='/bar/TheObjectManager'",
2733 path_namespace_should_match_message_2[] = {
2734 "type='signal',path_namespace='/foo/TheObjectManager'",
2739 path_namespace_should_not_match_message_2[] = {
2744 path_namespace_should_match_message_3[] = {
2749 path_namespace_should_not_match_message_3[] = {
2750 "type='signal',path_namespace='/foo/TheObjectManager'",
2755 test_matching_path_namespace (void)
2757 DBusMessage *message1;
2758 DBusMessage *message2;
2759 DBusMessage *message3;
2761 message1 = dbus_message_new (DBUS_MESSAGE_TYPE_SIGNAL);
2762 _dbus_assert (message1 != NULL);
2763 if (!dbus_message_set_path (message1, "/foo/TheObjectManager"))
2764 _dbus_assert_not_reached ("oom");
2766 message2 = dbus_message_new (DBUS_MESSAGE_TYPE_SIGNAL);
2767 _dbus_assert (message2 != NULL);
2768 if (!dbus_message_set_path (message2, "/foo/TheObjectManager/child_object"))
2769 _dbus_assert_not_reached ("oom");
2771 message3 = dbus_message_new (DBUS_MESSAGE_TYPE_SIGNAL);
2772 _dbus_assert (message3 != NULL);
2773 if (!dbus_message_set_path (message3, "/foo/TheObjectManagerOther"))
2774 _dbus_assert_not_reached ("oom");
2776 check_matching (message1, 1,
2777 path_namespace_should_match_message_1,
2778 path_namespace_should_not_match_message_1);
2779 check_matching (message2, 2,
2780 path_namespace_should_match_message_2,
2781 path_namespace_should_not_match_message_2);
2782 check_matching (message3, 3,
2783 path_namespace_should_match_message_3,
2784 path_namespace_should_not_match_message_3);
2786 dbus_message_unref (message3);
2787 dbus_message_unref (message2);
2788 dbus_message_unref (message1);
2792 bus_signals_test (const DBusString *test_data_dir)
2794 BusMatchmaker *matchmaker;
2796 matchmaker = bus_matchmaker_new ();
2797 bus_matchmaker_ref (matchmaker);
2798 bus_matchmaker_unref (matchmaker);
2799 bus_matchmaker_unref (matchmaker);
2801 if (!_dbus_test_oom_handling ("parsing match rules", test_parsing, NULL))
2802 _dbus_assert_not_reached ("Parsing match rules test failed");
2806 test_path_matching ();
2807 test_matching_path_namespace ();
2812 #endif /* DBUS_ENABLE_EMBEDDED_TESTS */