From dc0da555fd351b2a96bca0a6494e83f0643fac31 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Mon, 6 Feb 2012 09:34:52 +0000
Subject: [PATCH] adding -m option to gnunet-transport to enable monitor mode
 (see #1972)

---
 doc/man/gnunet-transport.1       |  3 +++
 src/transport/gnunet-transport.c | 43 +++++++++++++++++++++++++++++---
 2 files changed, 43 insertions(+), 3 deletions(-)

diff --git a/doc/man/gnunet-transport.1 b/doc/man/gnunet-transport.1
index bb7dc8085..cc1a022bd 100644
--- a/doc/man/gnunet-transport.1
+++ b/doc/man/gnunet-transport.1
@@ -26,6 +26,9 @@ print help page
 \fB\-i\fR, \fB\-\-information\fR
 print information about our current connections (once)
 .TP
+\fB\-m\fR, \fB\-\-monitor\fR
+print information about our current connections (continuously)
+.TP
 \fB\-L \fILOGLEVEL\fR, \fB\-\-loglevel=LOGLEVEL\fR
 Change the loglevel.  Possible values for LOGLEVEL are ERROR, WARNING, INFO and DEBUG.
 .TP
diff --git a/src/transport/gnunet-transport.c b/src/transport/gnunet-transport.c
index c78518813..4b0c08f54 100644
--- a/src/transport/gnunet-transport.c
+++ b/src/transport/gnunet-transport.c
@@ -75,6 +75,11 @@ static int iterate_connections;
  */
 static int test_configuration;
 
+/**
+ * Option -m.
+ */
+static int monitor_connections;
+
 /**
  * Option -n.
  */
@@ -482,6 +487,24 @@ process_address (void *cls, const struct GNUNET_PeerIdentity *peer,
 }
 
 
+/**
+ * Task run in monitor mode when the user presses CTRL-C to abort.
+ * Stops monitoring activity.
+ * 
+ * @param cls the 'struct GNUNET_TRANSPORT_PeerIterateContext *'
+ * @param tc scheduler context
+ */
+static void
+shutdown_task (void *cls,
+	       const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  struct GNUNET_TRANSPORT_PeerIterateContext *pic = cls;
+
+  GNUNET_TRANSPORT_peer_get_active_addresses_cancel (pic);  
+}
+
+
+
 /**
  * Main function that will be run by the scheduler.
  *
@@ -538,6 +561,17 @@ run (void *cls, char *const *args, const char *cfgfile,
                                                 GNUNET_TIME_UNIT_MINUTES,
                                                 &process_address, (void *) cfg);
   }
+  if (monitor_connections)
+  {
+    struct GNUNET_TRANSPORT_PeerIterateContext *pic;
+
+    pic = GNUNET_TRANSPORT_peer_get_active_addresses (cfg, NULL, GNUNET_NO,
+						      GNUNET_TIME_UNIT_FOREVER_REL,
+						      &process_address, (void *) cfg);
+    GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
+				  &shutdown_task,
+				  pic);
+  }
 }
 
 
@@ -554,6 +588,12 @@ main (int argc, char *const *argv)
     {'i', "information", NULL,
      gettext_noop ("provide information about all current connections (once)"),
      0, &GNUNET_GETOPT_set_one, &iterate_connections},
+    {'m', "monitor", NULL,
+     gettext_noop ("provide information about all current connections (continuously)"),
+     0, &GNUNET_GETOPT_set_one, &monitor_connections},
+    {'n', "numeric", NULL,
+     gettext_noop ("do not resolve hostnames"),
+     0, &GNUNET_GETOPT_set_one, &numeric},
     {'s', "send", NULL,
      gettext_noop
      ("send data for benchmarking to the other peer (until CTRL-C)"),
@@ -561,9 +601,6 @@ main (int argc, char *const *argv)
     {'t', "test", NULL,
      gettext_noop ("test transport configuration (involves external server)"),
      0, &GNUNET_GETOPT_set_one, &test_configuration},
-    {'n', "numeric", NULL,
-     gettext_noop ("do not resolve hostnames"),
-     0, &GNUNET_GETOPT_set_one, &numeric},
     GNUNET_GETOPT_OPTION_VERBOSE (&verbosity),
     GNUNET_GETOPT_OPTION_END
   };
-- 
2.25.1