1 files changed, 184 insertions, 0 deletions

diff --git a/src/dv/gnunet-dv.c b/src/dv/gnunet-dv.c
new file mode 100644
index 000000000..77324978e
--- /dev/null
+++ b/src/dv/gnunet-dv.c
@@ -0,0 +1,184 @@
+/*
+     This file is part of GNUnet.
+     (C) 2013 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 3, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file dv/gnunet-dv.c
+ * @brief DV monitoring command line tool
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_dv_service.h"
+
+/**
+ * Handle to DV service.
+ */
+static struct GNUNET_DV_ServiceHandle *sh;
+
+/**
+ * Was verbose specified?
+ */
+static int verbose;
+
+
+/**
+ * Function called if DV starts to be able to talk to a peer.
+ *
+ * @param cls closure
+ * @param peer newly connected peer
+ * @param distance distance to the peer
+ */
+static void 
+connect_cb (void *cls,
+            const struct GNUNET_PeerIdentity *peer,
+            uint32_t distance)
+{
+  fprintf (stderr, "Connect: %s at %u\n",
+           GNUNET_i2s (peer),
+           (unsigned int) distance);
+}
+
+
+/**
+ * Function called if DV distance to a peer is changed.
+ *
+ * @param cls closure
+ * @param peer connected peer
+ * @param distance new distance to the peer
+ */
+static void 
+change_cb (void *cls,
+           const struct GNUNET_PeerIdentity *peer,
+           uint32_t distance)
+{
+  fprintf (stderr, "Change: %s at %u\n",
+           GNUNET_i2s (peer),
+           (unsigned int) distance);
+}
+
+
+/**
+ * Function called if DV is no longer able to talk to a peer.
+ *
+ * @param cls closure
+ * @param peer peer that disconnected
+ */
+static void 
+disconnect_cb (void *cls,
+               const struct GNUNET_PeerIdentity *peer)
+{
+  fprintf (stderr, "Disconnect: %s\n",
+           GNUNET_i2s (peer));
+}
+
+
+/**
+ * Function called if DV receives a message for this peer.
+ *
+ * @param cls closure
+ * @param sender sender of the message
+ * @param distance how far did the message travel
+ * @param msg actual message payload
+ */
+static void 
+message_cb (void *cls,
+            const struct GNUNET_PeerIdentity *sender,
+            uint32_t distance,
+            const struct GNUNET_MessageHeader *msg)
+{
+  if (verbose)
+    fprintf (stderr, "Message: %s at %u sends %u bytes of type %u\n",
+             GNUNET_i2s (sender),
+             (unsigned int) distance,
+             (unsigned int) ntohs (msg->size),
+             (unsigned int) ntohs (msg->type));
+}
+
+
+/**
+ * Task run on shutdown.
+ *
+ * @param cls NULL
+ * @param tc unused
+ */
+static void
+shutdown_task (void *cls,
+               const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  GNUNET_DV_service_disconnect (sh);
+  sh = NULL;
+}
+
+
+/**
+ * Main function that will be run by the scheduler.
+ *
+ * @param cls closure
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving, can be NULL!)
+ * @param cfg configuration
+ */
+static void
+run (void *cls, char *const *args, const char *cfgfile,
+     const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+  sh = GNUNET_DV_service_connect (cfg, NULL,
+                                  &connect_cb,
+                                  &change_cb,
+                                  &disconnect_cb,
+                                  &message_cb);
+  GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
+                                &shutdown_task, NULL);
+}
+
+
+/**
+ * The main function.
+ *
+ * @param argc number of arguments from the command line
+ * @param argv command line arguments
+ * @return 0 ok, 1 on error
+ */
+int
+main (int argc, char *const *argv)
+{
+  int res;
+
+  static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+    {'V', "verbose", NULL,
+     gettext_noop ("verbose output"),
+     0, &GNUNET_GETOPT_set_one, &verbose},
+    GNUNET_GETOPT_OPTION_END
+  };
+
+  if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
+    return 2;
+
+  res = GNUNET_PROGRAM_run (argc, argv, "gnunet-dv",
+                            gettext_noop ("Print information about DV state"), 
+                            options, &run,
+                            NULL);
+  GNUNET_free ((void *) argv);
+
+  if (GNUNET_OK != res)
+    return 1;
+  return 0;
+}
+
+/* end of gnunet-dv.c */