src/feature/dircommon/dir_connection_st.h

   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 #ifndef DIR_CONNECTION_ST_H
   8 #define DIR_CONNECTION_ST_H
   9
  10 #include "core/or/connection_st.h"
  11
  12 struct tor_compress_state_t;
  13
  14 /** Subtype of connection_t for an "directory connection" -- that is, an HTTP
  15  * connection to retrieve or serve directory material. */
  16 struct dir_connection_t {
  17   connection_t base_;
  18
  19  /** Which 'resource' did we ask the directory for? This is typically the part
  20   * of the URL string that defines, relative to the directory conn purpose,
  21   * what thing we want.  For example, in router descriptor downloads by
  22   * descriptor digest, it contains "d/", then one or more +-separated
  23   * fingerprints.
  24   **/
  25   char *requested_resource;
  26   unsigned int dirconn_direct:1; /**< Is this dirconn direct, or via Tor? */
  27
  28   /** If we're fetching descriptors, what router purpose shall we assign
  29    * to them? */
  30   uint8_t router_purpose;
  31
  32   /** List of spooled_resource_t for objects that we're spooling. We use
  33    * it from back to front. */
  34   smartlist_t *spool;
  35   /** The compression object doing on-the-fly compression for spooled data. */
  36   struct tor_compress_state_t *compress_state;
  37
  38   /** What rendezvous service are we querying for? */
  39   rend_data_t *rend_data;
  40
  41   /* Hidden service connection identifier for dir connections: Used by HS
  42      client-side code to fetch HS descriptors, and by the service-side code to
  43      upload descriptors. */
  44   struct hs_ident_dir_conn_t *hs_ident;
  45
  46   /** If this is a one-hop connection, tracks the state of the directory guard
  47    * for this connection (if any). */
  48   struct circuit_guard_state_t *guard_state;
  49
  50   char identity_digest[DIGEST_LEN]; /**< Hash of the public RSA key for
  51                                      * the directory server's signing key. */
  52
  53   /** Unique ID for directory requests; this used to be in connection_t, but
  54    * that's going away and being used on channels instead.  The dirserver still
  55    * needs this for the incoming side, so it's moved here. */
  56   uint64_t dirreq_id;
  57
  58 #ifdef MEASUREMENTS_21206
  59   /** Number of RELAY_DATA cells received. */
  60   uint32_t data_cells_received;
  61
  62   /** Number of RELAY_DATA cells sent. */
  63   uint32_t data_cells_sent;
  64 #endif /* defined(MEASUREMENTS_21206) */
  65 };
  66
  67 #endif