-skeleton for identity service

1 files changed, 97 insertions, 0 deletions

diff --git a/src/identity/gnunet-service-identity.c b/src/identity/gnunet-service-identity.c
new file mode 100644
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+++ b/src/identity/gnunet-service-identity.c
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+/*
+  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 identity/gnunet-service-identity.c
+ * @brief network size estimation service
+ * @author Nathan Evans
+ * @author Christian Grothoff
+ *
+ * The purpose of this service is to estimate the size of the network.
+ * Given a specified interval, each peer hashes the most recent
+ * timestamp which is evenly divisible by that interval.  This hash is
+ * compared in distance to the peer identity to choose an offset.  The
+ * closer the peer identity to the hashed timestamp, the earlier the
+ * peer sends out a "nearest peer" message.  The closest peer's
+ * message should thus be received before any others, which stops
+ * those peer from sending their messages at a later duration.  So
+ * every peer should receive the same nearest peer message, and from
+ * this can calculate the expected number of peers in the network.
+ */
+#include "platform.h"
+#include <math.h>
+#include "gnunet_util_lib.h"
+#include "gnunet_constants.h"
+#include "gnunet_protocols.h"
+#include "gnunet_signatures.h"
+#include "gnunet_statistics_service.h"
+#include "gnunet_identity_service.h"
+#include "identity.h"
+
+/**
+ * Handle to our current configuration.
+ */
+static const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+/**
+ * Handle to the statistics service.
+ */
+static struct GNUNET_STATISTICS_Handle *stats;
+
+
+/**
+ * Handle network size estimate clients.
+ *
+ * @param cls closure
+ * @param server the initialized server
+ * @param c configuration to use
+ */
+static void
+run (void *cls, 
+     struct GNUNET_SERVER_Handle *server,
+     const struct GNUNET_CONFIGURATION_Handle *c)
+{
+  static const struct GNUNET_SERVER_MessageHandler handlers[] = {
+    // {&handle_start_message, NULL, GNUNET_MESSAGE_TYPE_IDENTITY_START, sizeof (struct GNUNET_MessageHeader)},
+    {NULL, NULL, 0, 0}
+  };
+
+  cfg = c;
+  stats = GNUNET_STATISTICS_create ("identity", cfg);
+}
+
+
+/**
+ * The main function for the network size estimation service.
+ *
+ * @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)
+{
+  return (GNUNET_OK ==
+          GNUNET_SERVICE_run (argc, argv, "identity", GNUNET_SERVICE_OPTION_NONE,
+                              &run, NULL)) ? 0 : 1;
+}
+
+
+/* end of gnunet-service-identity.c */