g10: Record and show statistics for encrypted messages when using TOFU

* g10/tofu.c: Include "sqrtu32.h".
(struct tofu_dbs_s.s): Rename get_trust_gather_other_keys to
get_trust_gather_signature_stats.  Add new field
get_trust_gather_encryption_stats.
(initdb): Create the encryptions table.
(ask_about_binding): Show the encryption statistics too.
(tofu_register): Rename from this...
(tofu_register_signature): ... to this and update callers.
(tofu_register_encryption): New function.
(write_stats_status): Add parameters encryption_count,
encryption_first_done and encryption_most_recent.  Update callers.
Compute the trust using the euclidean distance of the signature and
signature count.  Compare with twice the threshold.  Include
encryption count information in the TFS and TOFU_STATS lines.
(show_statistics): Also get information about the encrypted messages.
* g10/trustdb.c (tdb_get_validity_core): Use it.

--
Signed-off-by: Neal H. Walfield <[email protected]>

1 files changed, 23 insertions, 0 deletions

diff --git a/g10/pkclist.c b/g10/pkclist.c
index f7b248375..62f5b7f9b 100644
--- a/g10/pkclist.c
+++ b/g10/pkclist.c
@@ -1314,6 +1314,29 @@ build_pk_list (ctrl_t ctrl, strlist_t rcpts, PK_LIST *ret_pk_list)
       rc = GPG_ERR_NO_USER_ID;
     }
 
+#ifdef USE_TOFU
+  if (! rc && (opt.trust_model == TM_TOFU_PGP || opt.trust_model == TM_TOFU))
+    {
+      PK_LIST iter;
+      for (iter = pk_list; iter; iter = iter->next)
+        {
+          int rc2;
+
+          /* Note: we already resolved any conflict when looking up
+             the key.  Don't annoy the user again if she selected
+             accept once.  */
+          rc2 = tofu_register_encryption (ctrl, iter->pk, NULL, 0);
+          if (rc2)
+            log_info ("WARNING: Failed to register encryption to %s"
+                      " with TOFU engine\n",
+                      keystr (pk_main_keyid (iter->pk)));
+          else if (DBG_TRUST)
+            log_debug ("Registered encryption to %s with TOFU DB.\n",
+                      keystr (pk_main_keyid (iter->pk)));
+        }
+    }
+#endif /*USE_TOFU*/
+
  fail:
 
   if ( rc )