Line data    Source code

       1             : /* Copyright (c) 2007-2021, The Tor Project, Inc. */
       2             : /* See LICENSE for licensing information */
       3             : 
       4             : /**
       5             :  * \file btrack.c
       6             :  * \brief Bootstrap trackers
       7             :  *
       8             :  * Initializes and shuts down the specific bootstrap trackers.  These
       9             :  * trackers help the reporting of bootstrap progress by maintaining
      10             :  * state information about various subsystems within tor.  When the
      11             :  * correct state changes happen, these trackers emit controller
      12             :  * events.
      13             :  *
      14             :  * These trackers avoid referring directly to the internals of state
      15             :  * objects of other subsystems.
      16             :  *
      17             :  * btrack_circuit.c contains the tracker for origin circuits.
      18             :  *
      19             :  * btrack_orconn.c contains the tracker for OR connections.
      20             :  *
      21             :  * Eventually there will be a tracker for directory downloads as well.
      22             :  **/
      23             : 
      24             : #include "feature/control/btrack_circuit.h"
      25             : #include "feature/control/btrack_orconn.h"
      26             : #include "feature/control/btrack_sys.h"
      27             : #include "lib/pubsub/pubsub.h"
      28             : #include "lib/subsys/subsys.h"
      29             : 
      30             : static int
      31         244 : btrack_init(void)
      32             : {
      33         244 :   if (btrack_orconn_init())
      34           0 :     return -1;
      35             : 
      36             :   return 0;
      37             : }
      38             : 
      39             : static void
      40         235 : btrack_fini(void)
      41             : {
      42         235 :   btrack_orconn_fini();
      43         235 :   btrack_circ_fini();
      44         235 : }
      45             : 
      46             : static int
      47         245 : btrack_add_pubsub(pubsub_connector_t *connector)
      48             : {
      49         245 :   if (btrack_orconn_add_pubsub(connector))
      50             :     return -1;
      51         245 :   if (btrack_circ_add_pubsub(connector))
      52           0 :     return -1;
      53             : 
      54             :   return 0;
      55             : }
      56             : 
      57             : const subsys_fns_t sys_btrack = {
      58             :   .name = "btrack",
      59             :   SUBSYS_DECLARE_LOCATION(),
      60             :   .supported = true,
      61             :   .level = 55,
      62             :   .initialize = btrack_init,
      63             :   .shutdown = btrack_fini,
      64             :   .add_pubsub = btrack_add_pubsub,
      65             : };