src/feature/relay/routermode.c

   1 /* Copyright (c) 2001 Matej Pfajfar.
   2  * Copyright (c) 2001-2004, Roger Dingledine.
   3  * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
   4  * Copyright (c) 2007-2019, The Tor Project, Inc. */
   5 /* See LICENSE for licensing information */
   6
   7 #include "core/or/or.h"
   8
   9 #include "app/config/config.h"
  10 #include "core/mainloop/connection.h"
  11 #include "core/or/port_cfg_st.h"
  12 #include "feature/relay/router.h"
  13 #include "feature/relay/routermode.h"
  14
  15 /** Return 1 if we are configured to accept either relay or directory requests
  16  * from clients and we aren't at risk of exceeding our bandwidth limits, thus
  17  * we should be a directory server. If not, return 0.
  18  */
  19 int
  20 dir_server_mode(const or_options_t *options)
  21 {
  22   if (!options->DirCache)
  23     return 0;
  24   return options->DirPort_set ||
  25     (server_mode(options) && router_has_bandwidth_to_be_dirserver(options));
  26 }
  27
  28 /** Return true iff we are trying to proxy client connections. */
  29 int
  30 proxy_mode(const or_options_t *options)
  31 {
  32   (void)options;
  33   SMARTLIST_FOREACH_BEGIN(get_configured_ports(), const port_cfg_t *, p) {
  34     if (p->type == CONN_TYPE_AP_LISTENER ||
  35         p->type == CONN_TYPE_AP_TRANS_LISTENER ||
  36         p->type == CONN_TYPE_AP_DNS_LISTENER ||
  37         p->type == CONN_TYPE_AP_NATD_LISTENER)
  38       return 1;
  39   } SMARTLIST_FOREACH_END(p);
  40   return 0;
  41 }
  42
  43 /** Return true iff we are trying to be a server.
  44  */
  45 MOCK_IMPL(int,
  46 server_mode,(const or_options_t *options))
  47 {
  48   if (options->ClientOnly) return 0;
  49   return (options->ORPort_set);
  50 }
  51
  52 /** Return true iff we are trying to be a non-bridge server.
  53  */
  54 MOCK_IMPL(int,
  55 public_server_mode,(const or_options_t *options))
  56 {
  57   if (!server_mode(options)) return 0;
  58   return (!options->BridgeRelay);
  59 }
  60
  61 /** Remember if we've advertised ourselves to the dirservers. */
  62 static int server_is_advertised=0;
  63
  64 /** Return true iff we have published our descriptor lately.
  65  */
  66 MOCK_IMPL(int,
  67 advertised_server_mode,(void))
  68 {
  69   return server_is_advertised;
  70 }
  71
  72 /**
  73  * Called with a boolean: set whether we have recently published our
  74  * descriptor.
  75  */
  76 void
  77 set_server_advertised(int s)
  78 {
  79   server_is_advertised = s;
  80 }