[tor-commits] [tor/master] Merge remote-tracking branch 'dgoulet/ticket23355_032_01'

[nickm@xxxxxxxxxxxxxx]

commit ca19a95d5402e2f74e027761223f6d7605534c2c
Merge: 2264172fb 22295759a
Author: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date:   Fri Sep 8 12:13:48 2017 -0400

    Merge remote-tracking branch 'dgoulet/ticket23355_032_01'

 src/or/connection.c | 19 +++++++++++++++----
 src/or/connection.h |  1 +
 src/or/hs_cache.c   | 31 +++++++++++++++++++++++++++++++
 src/or/hs_cache.h   |  2 ++
 src/or/hs_client.c  | 45 +++++++++++++++++++++++++++++++++++++++++++++
 src/or/hs_client.h  |  2 ++
 src/or/main.c       |  3 ++-
 src/or/rendcache.c  |  4 ++--
 8 files changed, 100 insertions(+), 7 deletions(-)

diff --cc src/or/hs_client.c
index e7d316b74,0015a9016..f85ebc847
--- a/src/or/hs_client.c
+++ b/src/or/hs_client.c
@@@ -31,8 -28,31 +31,32 @@@
  #include "connection.h"
  #include "hs_ntor.h"
  #include "circuitbuild.h"
 +#include "networkstatus.h"
  
+ /* Cancel all descriptor fetches currently in progress. */
+ static void
+ cancel_descriptor_fetches(void)
+ {
+   smartlist_t *conns =
+     connection_list_by_type_state(CONN_TYPE_DIR, DIR_PURPOSE_FETCH_HSDESC);
+   SMARTLIST_FOREACH_BEGIN(conns, connection_t *, conn) {
+     const hs_ident_dir_conn_t *ident = TO_DIR_CONN(conn)->hs_ident;
+     if (BUG(ident == NULL)) {
+       /* A directory connection fetching a service descriptor can't have an
+        * empty hidden service identifier. */
+       continue;
+     }
+     log_debug(LD_REND, "Marking for close a directory connection fetching "
+                        "a hidden service descriptor for service %s.",
+               safe_str_client(ed25519_fmt(&ident->identity_pk)));
+     connection_mark_for_close(conn);
+   } SMARTLIST_FOREACH_END(conn);
+ 
+   /* No ownership of the objects in this list. */
+   smartlist_free(conns);
+   log_info(LD_REND, "Hidden service client descriptor fetches cancelled.");
+ }
+ 
  /* Get all connections that are waiting on a circuit and flag them back to
   * waiting for a hidden service descriptor for the given service key
   * service_identity_pk. */
@@@ -1267,11 -1275,24 +1291,32 @@@ hs_client_reextend_intro_circuit(origin
    return ret;
  }
  
 +/* Release all the storage held by the client subsystem. */
 +void
 +hs_client_free_all(void)
 +{
 +  /* Purge the hidden service request cache. */
 +  hs_purge_last_hid_serv_requests();
 +}
 +
+ /* Purge all potentially remotely-detectable state held in the hidden
+  * service client code. Called on SIGNAL NEWNYM. */
+ void
+ hs_client_purge_state(void)
+ {
+   /* v2 subsystem. */
+   rend_client_purge_state();
+ 
+   /* Cancel all descriptor fetches. Do this first so once done we are sure
+    * that our descriptor cache won't modified. */
+   cancel_descriptor_fetches();
+   /* Purge the introduction point state cache. */
+   hs_cache_client_intro_state_purge();
+   /* Purge the descriptor cache. */
+   hs_cache_purge_as_client();
+   /* Purge the last hidden service request cache. */
+   hs_purge_last_hid_serv_requests();
+ 
+   log_info(LD_REND, "Hidden service client state has been purged.");
+ }
+ 
diff --cc src/or/hs_client.h
index d8b8acf75,a0f7c6b46..522770450
--- a/src/or/hs_client.h
+++ b/src/or/hs_client.h
@@@ -46,14 -46,7 +46,16 @@@ extend_info_t *hs_client_get_random_int
  
  int hs_client_reextend_intro_circuit(origin_circuit_t *circ);
  
+ void hs_client_purge_state(void);
+ 
 +void hs_client_free_all(void);
 +
 +#ifdef HS_CLIENT_PRIVATE
 +
 +STATIC routerstatus_t *
 +pick_hsdir_v3(const ed25519_public_key_t *onion_identity_pk);
 +
 +#endif
 +
  #endif /* TOR_HS_CLIENT_H */
  

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