agent: Fix long standing regression tracking the connection count.

* agent/gpg-agent.c (get_agent_active_connection_count): New.
(do_start_connection_thread, start_connection_thread_ssh): Bump
ACTIVE_CONNECTIONS up and down.
* agent/command.c (cmd_getinfo): Add subcommand "connections".
--

The variable ACTIVE_CONNECTIONS is used to shutdown gpg-agent in a
friendly way.  Before we switched to nPth a Pth provided count of
threads was used for this.  During the migration to nPth
ACTIVE_CONNECTIONS was introduced and checked but never set.

Signed-off-by: Werner Koch <[email protected]>

1 files changed, 9 insertions, 0 deletions

diff --git a/agent/command.c b/agent/command.c
index 1803b5f4e..7fc28ad96 100644
--- a/agent/command.c
+++ b/agent/command.c
@@ -2775,6 +2775,7 @@ static const char hlp_getinfo[] =
   "  std_startup_env - List the standard startup environment.\n"
   "  cmd_has_option\n"
   "              - Returns OK if the command CMD implements the option OPT.\n"
+  "  connections - Return number of active connections.\n"
   "  restricted  - Returns OK if the connection is in restricted mode.\n";
 static gpg_error_t
 cmd_getinfo (assuan_context_t ctx, char *line)
@@ -2907,6 +2908,14 @@ cmd_getinfo (assuan_context_t ctx, char *line)
             }
         }
     }
+  else if (!strcmp (line, "connections"))
+    {
+      char numbuf[20];
+
+      snprintf (numbuf, sizeof numbuf, "%d",
+                get_agent_active_connection_count ());
+      rc = assuan_send_data (ctx, numbuf, strlen (numbuf));
+    }
   else
     rc = set_error (GPG_ERR_ASS_PARAMETER, "unknown value for WHAT");
   return rc;