static dbus_bool_t
check_bus_name (const char *bus_name,
DBusError *error)
{
DBusString str;
_dbus_string_init_const (&str, bus_name);
if (!_dbus_validate_bus_name (&str, 0, _dbus_string_get_length (&str)))
{
dbus_set_error (error, DBUS_ERROR_SPAWN_SERVICE_INVALID,
"bus name '%s' is not a valid bus name\n",
bus_name);
return FALSE;
}
return TRUE;
}
dbus_bool_t
bus_registry_release_service (BusRegistry *registry,
DBusConnection *connection,
const DBusString *service_name,
dbus_uint32_t *result,
BusTransaction *transaction,
DBusError *error)
{
dbus_bool_t retval;
BusService *service;
retval = FALSE;
if (!_dbus_validate_bus_name (service_name, 0,
_dbus_string_get_length (service_name)))
{
dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
"Given bus name \"%s\" is not valid",
_dbus_string_get_const_data (service_name));
_dbus_verbose ("Attempt to release invalid service name\n");
goto out;
}
if (_dbus_string_get_byte (service_name, 0) == ':')
{
/* Not allowed; the base service name cannot be created or released */
dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
"Cannot release a service starting with ':' such as \"%s\"",
_dbus_string_get_const_data (service_name));
_dbus_verbose ("Attempt to release invalid base service name \"%s\"",
_dbus_string_get_const_data (service_name));
goto out;
}
if (_dbus_string_equal_c_str (service_name, DBUS_SERVICE_DBUS))
{
/* Not allowed; the base service name cannot be created or released */
dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
"Cannot release the %s service because it is owned by the bus",
DBUS_SERVICE_DBUS);
_dbus_verbose ("Attempt to release service name \"%s\"",
DBUS_SERVICE_DBUS);
goto out;
}
service = bus_registry_lookup (registry, service_name);
if (service == NULL)
{
*result = DBUS_RELEASE_NAME_REPLY_NON_EXISTENT;
}
else if (!bus_service_has_owner (service, connection))
{
*result = DBUS_RELEASE_NAME_REPLY_NOT_OWNER;
}
else
{
if (!bus_service_remove_owner (service, connection,
transaction, error))
goto out;
_dbus_assert (!bus_service_has_owner (service, connection));
*result = DBUS_RELEASE_NAME_REPLY_RELEASED;
}
retval = TRUE;
out:
return retval;
}
dbus_bool_t
bus_registry_acquire_service (BusRegistry *registry,
DBusConnection *connection,
const DBusString *service_name,
dbus_uint32_t flags,
dbus_uint32_t *result,
BusTransaction *transaction,
DBusError *error)
{
dbus_bool_t retval;
DBusConnection *old_owner_conn;
BusClientPolicy *policy;
BusService *service;
BusActivation *activation;
BusSELinuxID *sid;
BusOwner *primary_owner;
retval = FALSE;
if (!_dbus_validate_bus_name (service_name, 0,
_dbus_string_get_length (service_name)))
{
dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
"Requested bus name \"%s\" is not valid",
_dbus_string_get_const_data (service_name));
_dbus_verbose ("Attempt to acquire invalid service name\n");
goto out;
}
if (_dbus_string_get_byte (service_name, 0) == ':')
{
/* Not allowed; only base services can start with ':' */
dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
"Cannot acquire a service starting with ':' such as \"%s\"",
_dbus_string_get_const_data (service_name));
_dbus_verbose ("Attempt to acquire invalid base service name \"%s\"",
_dbus_string_get_const_data (service_name));
goto out;
}
if (_dbus_string_equal_c_str (service_name, DBUS_SERVICE_DBUS))
{
dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
"Connection \"%s\" is not allowed to own the service \"%s\"because "
"it is reserved for D-Bus' use only",
bus_connection_is_active (connection) ?
bus_connection_get_name (connection) :
"(inactive)",
DBUS_SERVICE_DBUS);
goto out;
}
policy = bus_connection_get_policy (connection);
_dbus_assert (policy != NULL);
/* Note that if sid is #NULL then the bus's own context gets used
* in bus_connection_selinux_allows_acquire_service()
*/
sid = bus_selinux_id_table_lookup (registry->service_sid_table,
service_name);
if (!bus_selinux_allows_acquire_service (connection, sid,
_dbus_string_get_const_data (service_name), error))
{
if (dbus_error_is_set (error) &&
dbus_error_has_name (error, DBUS_ERROR_NO_MEMORY))
{
goto out;
}
dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
"Connection \"%s\" is not allowed to own the service \"%s\" due "
"to SELinux policy",
bus_connection_is_active (connection) ?
bus_connection_get_name (connection) :
"(inactive)",
_dbus_string_get_const_data (service_name));
goto out;
}
if (!bus_client_policy_check_can_own (policy, service_name))
{
dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
"Connection \"%s\" is not allowed to own the service \"%s\" due "
"to security policies in the configuration file",
bus_connection_is_active (connection) ?
bus_connection_get_name (connection) :
"(inactive)",
_dbus_string_get_const_data (service_name));
goto out;
}
if (bus_connection_get_n_services_owned (connection) >=
bus_context_get_max_services_per_connection (registry->context))
{
dbus_set_error (error, DBUS_ERROR_LIMITS_EXCEEDED,
"Connection \"%s\" is not allowed to own more services "
"(increase limits in configuration file if required)",
bus_connection_is_active (connection) ?
bus_connection_get_name (connection) :
"(inactive)");
goto out;
}
service = bus_registry_lookup (registry, service_name);
if (service != NULL)
{
primary_owner = bus_service_get_primary_owner (service);
if (primary_owner != NULL)
old_owner_conn = primary_owner->conn;
else
old_owner_conn = NULL;
}
else
old_owner_conn = NULL;
if (service == NULL)
{
service = bus_registry_ensure (registry,
service_name, connection, flags,
transaction, error);
if (service == NULL)
goto out;
}
primary_owner = bus_service_get_primary_owner (service);
if (primary_owner == NULL)
goto out;
if (old_owner_conn == NULL)
{
_dbus_assert (primary_owner->conn == connection);
*result = DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER;
}
else if (old_owner_conn == connection)
{
bus_owner_set_flags (primary_owner, flags);
*result = DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER;
}
else if (((flags & DBUS_NAME_FLAG_DO_NOT_QUEUE) &&
!(bus_service_get_allow_replacement (service))) ||
((flags & DBUS_NAME_FLAG_DO_NOT_QUEUE) &&
!(flags & DBUS_NAME_FLAG_REPLACE_EXISTING)))
{
DBusList *link;
BusOwner *temp_owner;
/* Since we can't be queued if we are already in the queue
remove us */
link = _bus_service_find_owner_link (service, connection);
if (link != NULL)
{
_dbus_list_unlink (&service->owners, link);
temp_owner = (BusOwner *)link->data;
bus_owner_unref (temp_owner);
_dbus_list_free_link (link);
}
*result = DBUS_REQUEST_NAME_REPLY_EXISTS;
}
else if (!(flags & DBUS_NAME_FLAG_DO_NOT_QUEUE) &&
(!(flags & DBUS_NAME_FLAG_REPLACE_EXISTING) ||
!(bus_service_get_allow_replacement (service))))
{
/* Queue the connection */
if (!bus_service_add_owner (service, connection,
flags,
transaction, error))
goto out;
*result = DBUS_REQUEST_NAME_REPLY_IN_QUEUE;
}
else
{
/* Replace the current owner */
/* We enqueue the new owner and remove the first one because
* that will cause NameAcquired and NameLost messages to
* be sent.
*/
if (!bus_service_add_owner (service, connection,
flags,
transaction, error))
goto out;
if (primary_owner->do_not_queue)
{
if (!bus_service_remove_owner (service, old_owner_conn,
transaction, error))
goto out;
}
else
{
if (!bus_service_swap_owner (service, old_owner_conn,
transaction, error))
goto out;
}
_dbus_assert (connection == bus_service_get_primary_owner (service)->conn);
*result = DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER;
}
activation = bus_context_get_activation (registry->context);
retval = bus_activation_send_pending_auto_activation_messages (activation,
service,
transaction);
if (!retval)
BUS_SET_OOM (error);
out:
return retval;
}
dbus_bool_t
_dbus_marshal_validate_test (void)
{
DBusString str;
int i;
const char *valid_paths[] = {
"/",
"/foo/bar",
"/foo",
"/foo/bar/baz"
};
const char *invalid_paths[] = {
"bar",
"bar/baz",
"/foo/bar/",
"/foo/",
"foo/",
"boo//blah",
"//",
"///",
"foo///blah/",
"Hello World",
"",
" ",
"foo bar"
};
const char *valid_interfaces[] = {
"org.freedesktop.Foo",
"Bar.Baz",
"Blah.Blah.Blah.Blah.Blah",
"a.b",
"a.b.c.d.e.f.g",
"a0.b1.c2.d3.e4.f5.g6",
"abc123.foo27"
};
const char *invalid_interfaces[] = {
".",
"",
"..",
".Foo.Bar",
"..Foo.Bar",
"Foo.Bar.",
"Foo.Bar..",
"Foo",
"9foo.bar.baz",
"foo.bar..baz",
"foo.bar...baz",
"foo.bar.b..blah",
":",
":0-1",
"10",
":11.34324",
"0.0.0",
"0..0",
"foo.Bar.%",
"foo.Bar!!",
"!Foo.bar.bz",
"foo.$.blah",
"",
" ",
"foo bar"
};
const char *valid_unique_names[] = {
":0",
":a",
":",
":.a",
":.1",
":0.1",
":000.2222",
":.blah",
":abce.freedesktop.blah"
};
const char *invalid_unique_names[] = {
//":-",
":!",
//":0-10",
":blah.",
":blah.",
":blah..org",
":blah.org..",
":..blah.org",
"",
" ",
"foo bar"
};
const char *valid_members[] = {
"Hello",
"Bar",
"foobar",
"_foobar",
"foo89"
};
const char *invalid_members[] = {
"9Hello",
"10",
"1",
"foo-bar",
"blah.org",
".blah",
"blah.",
"Hello.",
"!foo",
"",
" ",
"foo bar"
};
const char *valid_signatures[] = {
"",
"sss",
"i",
"b"
};
const char *invalid_signatures[] = {
" ",
"not a valid signature",
"123",
".",
"(",
"a{(ii)i}" /* https://bugs.freedesktop.org/show_bug.cgi?id=17803 */
};
/* Signature with reason */
run_validity_tests (signature_tests, _DBUS_N_ELEMENTS (signature_tests),
_dbus_validate_signature_with_reason);
/* Path validation */
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (valid_paths))
{
_dbus_string_init_const (&str, valid_paths[i]);
if (!_dbus_validate_path (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Path \"%s\" should have been valid", valid_paths[i]);
_dbus_assert_not_reached ("invalid path");
}
++i;
}
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (invalid_paths))
{
_dbus_string_init_const (&str, invalid_paths[i]);
if (_dbus_validate_path (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Path \"%s\" should have been invalid", invalid_paths[i]);
_dbus_assert_not_reached ("valid path");
}
++i;
}
/* Interface validation */
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (valid_interfaces))
{
_dbus_string_init_const (&str, valid_interfaces[i]);
if (!_dbus_validate_interface (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Interface \"%s\" should have been valid", valid_interfaces[i]);
_dbus_assert_not_reached ("invalid interface");
}
++i;
}
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (invalid_interfaces))
{
_dbus_string_init_const (&str, invalid_interfaces[i]);
if (_dbus_validate_interface (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Interface \"%s\" should have been invalid", invalid_interfaces[i]);
_dbus_assert_not_reached ("valid interface");
}
++i;
}
/* Bus name validation (check that valid interfaces are valid bus names,
* and invalid interfaces are invalid services except if they start with ':')
*/
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (valid_interfaces))
{
_dbus_string_init_const (&str, valid_interfaces[i]);
if (!_dbus_validate_bus_name (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Bus name \"%s\" should have been valid", valid_interfaces[i]);
_dbus_assert_not_reached ("invalid bus name");
}
++i;
}
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (invalid_interfaces))
{
if (invalid_interfaces[i][0] != ':')
{
_dbus_string_init_const (&str, invalid_interfaces[i]);
if (_dbus_validate_bus_name (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Bus name \"%s\" should have been invalid", invalid_interfaces[i]);
_dbus_assert_not_reached ("valid bus name");
}
}
++i;
}
/* unique name validation */
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (valid_unique_names))
{
_dbus_string_init_const (&str, valid_unique_names[i]);
if (!_dbus_validate_bus_name (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Bus name \"%s\" should have been valid", valid_unique_names[i]);
_dbus_assert_not_reached ("invalid unique name");
}
++i;
}
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (invalid_unique_names))
{
_dbus_string_init_const (&str, invalid_unique_names[i]);
if (_dbus_validate_bus_name (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Bus name \"%s\" should have been invalid", invalid_unique_names[i]);
_dbus_assert_not_reached ("valid unique name");
}
++i;
}
/* Error name validation (currently identical to interfaces)
*/
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (valid_interfaces))
{
_dbus_string_init_const (&str, valid_interfaces[i]);
if (!_dbus_validate_error_name (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Error name \"%s\" should have been valid", valid_interfaces[i]);
_dbus_assert_not_reached ("invalid error name");
}
++i;
}
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (invalid_interfaces))
{
if (invalid_interfaces[i][0] != ':')
{
_dbus_string_init_const (&str, invalid_interfaces[i]);
if (_dbus_validate_error_name (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Error name \"%s\" should have been invalid", invalid_interfaces[i]);
_dbus_assert_not_reached ("valid error name");
}
}
++i;
}
/* Member validation */
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (valid_members))
{
_dbus_string_init_const (&str, valid_members[i]);
if (!_dbus_validate_member (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Member \"%s\" should have been valid", valid_members[i]);
_dbus_assert_not_reached ("invalid member");
}
++i;
}
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (invalid_members))
{
_dbus_string_init_const (&str, invalid_members[i]);
if (_dbus_validate_member (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Member \"%s\" should have been invalid", invalid_members[i]);
_dbus_assert_not_reached ("valid member");
}
++i;
}
/* Signature validation */
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (valid_signatures))
{
_dbus_string_init_const (&str, valid_signatures[i]);
if (!_dbus_validate_signature (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Signature \"%s\" should have been valid", valid_signatures[i]);
_dbus_assert_not_reached ("invalid signature");
}
++i;
}
i = 0;
while (i < (int) _DBUS_N_ELEMENTS (invalid_signatures))
{
_dbus_string_init_const (&str, invalid_signatures[i]);
if (_dbus_validate_signature (&str, 0,
_dbus_string_get_length (&str)))
{
_dbus_warn ("Signature \"%s\" should have been invalid", invalid_signatures[i]);
_dbus_assert_not_reached ("valid signature");
}
++i;
}
/* Validate claimed length longer than real length */
_dbus_string_init_const (&str, "abc.efg");
if (_dbus_validate_bus_name (&str, 0, 8))
_dbus_assert_not_reached ("validated too-long string");
if (_dbus_validate_interface (&str, 0, 8))
_dbus_assert_not_reached ("validated too-long string");
if (_dbus_validate_error_name (&str, 0, 8))
_dbus_assert_not_reached ("validated too-long string");
_dbus_string_init_const (&str, "abc");
if (_dbus_validate_member (&str, 0, 4))
_dbus_assert_not_reached ("validated too-long string");
_dbus_string_init_const (&str, "sss");
if (_dbus_validate_signature (&str, 0, 4))
_dbus_assert_not_reached ("validated too-long signature");
/* Validate string exceeding max name length */
if (!_dbus_string_init (&str))
_dbus_assert_not_reached ("no memory");
while (_dbus_string_get_length (&str) <= DBUS_MAXIMUM_NAME_LENGTH)
if (!_dbus_string_append (&str, "abc.def"))
_dbus_assert_not_reached ("no memory");
if (_dbus_validate_bus_name (&str, 0, _dbus_string_get_length (&str)))
_dbus_assert_not_reached ("validated overmax string");
if (_dbus_validate_interface (&str, 0, _dbus_string_get_length (&str)))
_dbus_assert_not_reached ("validated overmax string");
if (_dbus_validate_error_name (&str, 0, _dbus_string_get_length (&str)))
_dbus_assert_not_reached ("validated overmax string");
/* overlong member */
_dbus_string_set_length (&str, 0);
while (_dbus_string_get_length (&str) <= DBUS_MAXIMUM_NAME_LENGTH)
if (!_dbus_string_append (&str, "abc"))
_dbus_assert_not_reached ("no memory");
if (_dbus_validate_member (&str, 0, _dbus_string_get_length (&str)))
_dbus_assert_not_reached ("validated overmax string");
/* overlong unique name */
_dbus_string_set_length (&str, 0);
_dbus_string_append (&str, ":");
while (_dbus_string_get_length (&str) <= DBUS_MAXIMUM_NAME_LENGTH)
if (!_dbus_string_append (&str, "abc"))
_dbus_assert_not_reached ("no memory");
if (_dbus_validate_bus_name (&str, 0, _dbus_string_get_length (&str)))
_dbus_assert_not_reached ("validated overmax string");
_dbus_string_free (&str);
/* Body validation; test basic validation of valid bodies for both endian */
{
int sequence;
DBusString signature;
DBusString body;
if (!_dbus_string_init (&signature) || !_dbus_string_init (&body))
_dbus_assert_not_reached ("oom");
sequence = 0;
while (dbus_internal_do_not_use_generate_bodies (sequence,
DBUS_LITTLE_ENDIAN,
&signature, &body))
{
DBusValidity validity;
validity = _dbus_validate_body_with_reason (&signature, 0,
DBUS_LITTLE_ENDIAN,
NULL, &body, 0,
_dbus_string_get_length (&body));
if (validity != DBUS_VALID)
{
_dbus_warn ("invalid code %d expected valid on sequence %d little endian",
validity, sequence);
_dbus_verbose_bytes_of_string (&signature, 0, _dbus_string_get_length (&signature));
_dbus_verbose_bytes_of_string (&body, 0, _dbus_string_get_length (&body));
_dbus_assert_not_reached ("test failed");
}
_dbus_string_set_length (&signature, 0);
_dbus_string_set_length (&body, 0);
++sequence;
}
sequence = 0;
while (dbus_internal_do_not_use_generate_bodies (sequence,
DBUS_BIG_ENDIAN,
&signature, &body))
{
DBusValidity validity;
validity = _dbus_validate_body_with_reason (&signature, 0,
DBUS_BIG_ENDIAN,
NULL, &body, 0,
_dbus_string_get_length (&body));
if (validity != DBUS_VALID)
{
_dbus_warn ("invalid code %d expected valid on sequence %d big endian",
validity, sequence);
_dbus_verbose_bytes_of_string (&signature, 0, _dbus_string_get_length (&signature));
_dbus_verbose_bytes_of_string (&body, 0, _dbus_string_get_length (&body));
_dbus_assert_not_reached ("test failed");
}
_dbus_string_set_length (&signature, 0);
_dbus_string_set_length (&body, 0);
++sequence;
}
_dbus_string_free (&signature);
_dbus_string_free (&body);
}
return TRUE;
}
