psycstore service skeleton

1 files changed, 169 insertions, 0 deletions

diff --git a/src/psycstore/gnunet-service-psycstore.c b/src/psycstore/gnunet-service-psycstore.c
new file mode 100644
index 000000000..977f77e06
--- /dev/null
+++ b/src/psycstore/gnunet-service-psycstore.c
@@ -0,0 +1,169 @@
+/*
+  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 psycstore/gnunet-service-psycstore.c
+ * @brief PSYCstore service
+ * @author Gabor X Toth
+ * @author Christian Grothoff
+ *
+ * The purpose of this service is to manage private keys that
+ * represent the various egos/pseudonyms/identities of a GNUnet user.
+ *
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_constants.h"
+#include "gnunet_protocols.h"
+#include "gnunet_statistics_service.h"
+#include "gnunet_psycstore_service.h"
+#include "psycstore.h"
+
+
+/**
+ * Handle to our current configuration.
+ */
+static const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+/**
+ * Handle to the statistics service.
+ */
+static struct GNUNET_STATISTICS_Handle *stats;
+
+/**
+ * Notification context, simplifies client broadcasts.
+ */
+static struct GNUNET_SERVER_NotificationContext *nc;
+
+/**
+ * Database file.
+ */
+static char *db_file;
+
+
+/**
+ * Task run during shutdown.
+ *
+ * @param cls unused
+ * @param tc unused
+ */
+static void
+shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  if (NULL != nc)
+  {
+    GNUNET_SERVER_notification_context_destroy (nc);
+    nc = NULL;
+  }
+  if (NULL != stats)
+  {
+    GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
+    stats = NULL;
+  }
+  GNUNET_free (db_file);
+  db_file = NULL;
+}
+
+
+/**
+ * Send a result code back to the client.
+ *
+ * @param client client that should receive the result code
+ * @param result_code code to transmit
+ * @param emsg error message to include (or NULL for none)
+ */
+static void
+send_result_code (struct GNUNET_SERVER_Client *client,
+                  uint32_t result_code,
+                  const char *emsg)
+{
+  struct GNUNET_PSYCSTORE_ResultCodeMessage *rcm;
+  size_t elen;
+
+  if (NULL == emsg)
+    elen = 0;
+  else
+    elen = strlen (emsg) + 1;
+  rcm = GNUNET_malloc (sizeof (struct GNUNET_PSYCSTORE_ResultCodeMessage) + elen);
+  rcm->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_RESULT_CODE);
+  rcm->header.size = htons (sizeof (struct GNUNET_PSYCSTORE_ResultCodeMessage) + elen);
+  rcm->result_code = htonl (result_code);
+  memcpy (&rcm[1], emsg, elen);
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Sending result %d (%s) to client\n",
+              (int) result_code,
+              emsg);
+  GNUNET_SERVER_notification_context_unicast (nc, client, &rcm->header, GNUNET_NO);
+  GNUNET_free (rcm);
+}
+
+
+/**
+ * Handle PSYCstore 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[] = {
+    {NULL, NULL, 0, 0}
+  };
+
+  cfg = c;
+  if (GNUNET_OK !=
+      GNUNET_CONFIGURATION_get_value_filename (cfg, "psycstore",
+                                               "DB_FILE",
+                                               &db_file))
+  {
+    GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR, "psycstore", "DB_FILE");
+    GNUNET_SCHEDULER_shutdown ();
+    return;
+  }
+  stats = GNUNET_STATISTICS_create ("psycstore", cfg);
+  GNUNET_SERVER_add_handlers (server, handlers);
+  nc = GNUNET_SERVER_notification_context_create (server, 1);
+  GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
+                                NULL);
+}
+
+
+/**
+ * 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, "psycstore", 
+                              GNUNET_SERVICE_OPTION_NONE,
+                              &run, NULL)) ? 0 : 1;
+}
+
+
+/* end of gnunet-service-psycstore.c */