#include <dbus/dbus-list.h>
#include <dbus/dbus-mempool.h>
#include <dbus/dbus-marshal-validate.h>
+#include <linux/types.h>
+#include <errno.h>
+#include <stdlib.h>
+
#include "driver.h"
#include "services.h"
#include "policy.h"
#include "bus.h"
#include "selinux.h"
+#include "kdbus-d.h"
struct BusService
{
return link;
}
+static DBusConnection *
+_bus_service_find_owner_connection (BusService *service,
+ const char* unique_name)
+{
+ DBusList *link;
+
+ link = _dbus_list_get_first_link (&service->owners);
+
+ while (link != NULL)
+ {
+ BusOwner *bus_owner;
+
+ bus_owner = (BusOwner *) link->data;
+ if(!strcmp(bus_connection_get_name(bus_owner->conn), unique_name))
+ return bus_owner->conn;
+
+ link = _dbus_list_get_next_link (&service->owners, link);
+ }
+
+ return NULL;
+}
+
static void
bus_owner_set_flags (BusOwner *owner,
dbus_uint32_t flags)
BUS_SET_OOM (error);
return NULL;
}
-
+
return service;
}
error:
for (j = 0; j < i; j++)
- dbus_free (retval[i]);
+ dbus_free (retval[j]);
dbus_free (retval);
return FALSE;
* in bus_connection_selinux_allows_acquire_service()
*/
sid = bus_selinux_id_table_lookup (registry->service_sid_table,
- service_name);
+ service_name);
if (!bus_selinux_allows_acquire_service (connection, sid,
_dbus_string_get_const_data (service_name), error))
- {
+ {
- if (dbus_error_is_set (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;
- }
-
+ 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;
- }
+ {
+ 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;
- }
-
+ 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;
- }
+ {
+ 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;
-
+ old_owner_conn = NULL;
+
if (service == NULL)
- {
- service = bus_registry_ensure (registry,
- service_name, connection, flags,
- transaction, error);
- if (service == NULL)
- goto out;
- }
+ {
+ 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;
+ goto out;
if (old_owner_conn == NULL)
- {
- _dbus_assert (primary_owner->conn == connection);
+ {
+ _dbus_assert (primary_owner->conn == connection);
- *result = DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER;
- }
+ *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;
- }
+ {
+ 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))) ||
+ !(bus_service_get_allow_replacement (service))) ||
((flags & DBUS_NAME_FLAG_DO_NOT_QUEUE) &&
- !(flags & DBUS_NAME_FLAG_REPLACE_EXISTING)))
+ !(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,
+ error);
+
+ out:
+ return retval;
+}
+
+dbus_bool_t
+bus_registry_acquire_kdbus_service (BusRegistry *registry,
+ DBusConnection *connection,
+ DBusMessage *message,
+ dbus_uint32_t *result,
+ BusTransaction *transaction,
+ DBusError *error)
+{
+ dbus_bool_t retval;
+ BusService *service;
+ BusActivation *activation;
+
+ DBusString service_name_real;
+ const DBusString *service_name = &service_name_real;
+ char* name;
+ dbus_uint32_t flags;
+ __u64 sender_id;
+
+ if (!dbus_message_get_args (message, error,
+ DBUS_TYPE_STRING, &name,
+ DBUS_TYPE_UINT32, &flags,
+ DBUS_TYPE_INVALID))
+ return FALSE;
+
+ retval = FALSE;
+
+ _dbus_string_init_const (&service_name_real, name);
+
+ if (!_dbus_validate_bus_name (service_name, 0,
+ _dbus_string_get_length (service_name)))
{
- DBusList *link;
- BusOwner *temp_owner;
- /* Since we can't be queued if we are already in the queue
- remove us */
+ dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
+ "Requested bus name \"%s\" is not valid",
+ _dbus_string_get_const_data (service_name));
- 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;
+ _dbus_verbose ("Attempt to acquire invalid service name\n");
+
+ goto out;
}
- else if (!(flags & DBUS_NAME_FLAG_DO_NOT_QUEUE) &&
- (!(flags & DBUS_NAME_FLAG_REPLACE_EXISTING) ||
- !(bus_service_get_allow_replacement (service))))
+
+ if (_dbus_string_get_byte (service_name, 0) == ':')
{
- /* Queue the connection */
- if (!bus_service_add_owner (service, connection,
- flags,
- transaction, error))
- goto out;
-
- *result = DBUS_REQUEST_NAME_REPLY_IN_QUEUE;
+ /* 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;
}
- else
+
+ if (_dbus_string_equal_c_str (service_name, DBUS_SERVICE_DBUS))
{
- /* Replace the current owner */
+ 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;
+ }
- /* 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;
+ service = bus_registry_lookup (registry, service_name);
+ if (service == NULL)
+ {
+ service = bus_registry_ensure (registry, service_name, connection, flags,
+ transaction, error); //adds daemon to service owners list - must be removed after right owner is set
+ if (service == NULL)
+ goto out;
+
+ if(!kdbus_register_policy(service_name, connection))
+ {
+ dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
+ "Connection is not allowed to own the service \"%s\" due to security policies in the configuration file",
+ _dbus_string_get_const_data (service_name));
+ goto failed;
+ }
+ }
- 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;
- }
+ sender_id = sender_name_to_id(dbus_message_get_sender(message), error);
+ if(dbus_error_is_set(error))
+ goto failed;
+
+ *result = kdbus_request_name(connection, service_name, flags, sender_id);
+ if(*result == -EPERM)
+ {
+ dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
+ "Connection is not allowed to own the service \"%s\" due to security policies in the configuration file",
+ _dbus_string_get_const_data (service_name));
+ goto failed;
+ }
+ else if(*result < 0)
+ {
+ dbus_set_error (error, DBUS_ERROR_FAILED , "Name \"%s\" could not be acquired", name);
+ goto failed;
+ }
+
+ if((*result == DBUS_REQUEST_NAME_REPLY_IN_QUEUE) || (*result == DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER))
+ {
+ DBusConnection* phantom;
+
+ phantom = create_phantom_connection(connection, dbus_message_get_sender(message), error);
+ if(phantom == NULL)
+ goto failed2;
+ if (!bus_service_add_owner (service, phantom, flags, transaction, error))
+ {
+ dbus_connection_unref_phantom(phantom);
+ goto failed2;
+ }
+ if(*result == DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER)
+ {
+ /* Here we are removing DBus daemon as an owner of the service,
+ * which is set by bus_registry_ensure.
+ * If bus_service_remove_owner fail, we ignore it, because it has
+ * almost none impact on the usage
+ */
+ if(_bus_service_find_owner_link (service, connection))
+ bus_service_remove_owner (service, connection, transaction, NULL);
+ }
+ }
activation = bus_context_get_activation (registry->context);
retval = bus_activation_send_pending_auto_activation_messages (activation,
service,
transaction,
error);
-
out:
- return retval;
+ return retval;
+
+failed2:
+ kdbus_release_name(connection, service_name, sender_id);
+failed:
+ if(_bus_service_find_owner_link (service, connection))
+ bus_service_remove_owner (service, connection, transaction, NULL);
+
+ return FALSE;
}
dbus_bool_t
goto out;
}
- service = bus_registry_lookup (registry, service_name);
+ if(bus_context_is_kdbus(bus_transaction_get_context (transaction)))
+ {
+ __u64 sender_id;
- 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;
+ sender_id = sender_name_to_id((const char*)registry, error);
+ if(dbus_error_is_set(error))
+ return FALSE;
- _dbus_assert (!bus_service_has_owner (service, connection));
- *result = DBUS_RELEASE_NAME_REPLY_RELEASED;
- }
+ *result = kdbus_release_name(connection, service_name, sender_id);
+
+ if(*result == DBUS_RELEASE_NAME_REPLY_RELEASED)
+ {
+ const char* name;
+
+ name = (const char*)registry; //get name passed in registry pointer
+ registry = bus_connection_get_registry (connection); //than take original registry address
+
+ service = bus_registry_lookup (registry, service_name);
+ if(service)
+ {
+ DBusConnection* phantom;
+
+ phantom = _bus_service_find_owner_connection(service, name);
+ if(phantom)
+ {
+ bus_service_remove_owner (service, phantom, transaction, NULL);
+ dbus_connection_unref_phantom(phantom);
+ }
+ else
+ _dbus_verbose ("Didn't find phantom connection for released name!\n");
+ }
+ }
+ }
+ else
+ {
+ 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;
bus_service_ref (d->service);
bus_owner_ref (owner);
dbus_connection_ref (d->owner->conn);
-
+
return TRUE;
}
projects / platform / upstream / dbus.git / blobdiff