src/experimentation/gnunet-daemon-experimentation_experiments.c

   1 /*
   2      This file is part of GNUnet.
   3      (C) 2009 Christian Grothoff (and other contributing authors)
   4
   5      GNUnet is free software; you can redistribute it and/or modify
   6      it under the terms of the GNU General Public License as published
   7      by the Free Software Foundation; either version 3, or (at your
   8      option) any later version.
   9
  10      GNUnet is distributed in the hope that it will be useful, but
  11      WITHOUT ANY WARRANTY; without even the implied warranty of
  12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13      General Public License for more details.
  14
  15      You should have received a copy of the GNU General Public License
  16      along with GNUnet; see the file COPYING.  If not, write to the
  17      Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18      Boston, MA 02111-1307, USA.
  19 */
  20
  21 /**
  22  * @file experimentation/gnunet-daemon-experimentation_experiments.c
  23  * @brief experimentation daemon: experiment management
  24  * @author Christian Grothoff
  25  * @author Matthias Wachs
  26  */
  27 #include "platform.h"
  28 #include "gnunet_getopt_lib.h"
  29 #include "gnunet_util_lib.h"
  30 #include "gnunet_core_service.h"
  31 #include "gnunet_statistics_service.h"
  32 #include "gnunet-daemon-experimentation.h"
  33
  34 struct GNUNET_CONTAINER_MultiHashMap *issuer;
  35
  36 /**
  37  * Is peer a valid issuer
  38  *
  39  * @return GNUNET_YES or GNUNET_NO
  40  */
  41 int
  42 GNUNET_EXPERIMENTATION_experiments_issuer_accepted (struct GNUNET_PeerIdentity *issuer_ID)
  43 {
  44         if (GNUNET_CONTAINER_multihashmap_contains (issuer, &issuer_ID->hashPubKey))
  45                 return GNUNET_YES;
  46         else
  47                 return GNUNET_NO;
  48 }
  49
  50
  51 /**
  52  * Start experiments management
  53  */
  54 int
  55 GNUNET_EXPERIMENTATION_experiments_start ()
  56 {
  57         char *issuers;
  58         char *pos;
  59         struct GNUNET_PeerIdentity issuer_ID;
  60
  61         /* Load valid issuer */
  62         if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_string (GSE_cfg, "EXPERIMENTATION", "ISSUERS", &issuers))
  63         {
  64                         GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("No valid experiment issuers configured! Set value to peer id of issuer! Exit...\n"));
  65                         return GNUNET_SYSERR;
  66         }
  67
  68         issuer = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
  69
  70   for (pos = strtok (issuers, " "); pos != NULL; pos = strtok (NULL, " "))
  71   {
  72
  73                 if (GNUNET_SYSERR == GNUNET_CRYPTO_hash_from_string (pos, &issuer_ID.hashPubKey))
  74                 {
  75                         GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Invalid value `%s'\n"), pos);
  76                 }
  77                 else
  78                 {
  79                                 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "`%s' is a valid issuer \n", GNUNET_i2s (&issuer_ID));
  80                                 GNUNET_CONTAINER_multihashmap_put (issuer, &issuer_ID.hashPubKey,
  81                                                 NULL, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
  82                 }
  83   }
  84   GNUNET_free (issuers);
  85
  86   if (0 == GNUNET_CONTAINER_multihashmap_size (issuer))
  87   {
  88                 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("No valid experiment issuers configured! Set value to peer id of issuer! Exit...\n"));
  89                 GNUNET_EXPERIMENTATION_experiments_stop ();
  90                 return GNUNET_SYSERR;
  91   }
  92
  93   GNUNET_STATISTICS_set (GSE_stats, "# issuer", GNUNET_CONTAINER_multihashmap_size (issuer), GNUNET_NO);
  94         return GNUNET_OK;
  95 }
  96
  97 /**
  98  * Stop experiments management
  99  */
 100 void
 101 GNUNET_EXPERIMENTATION_experiments_stop ()
 102 {
 103         if (NULL != issuer)
 104                 GNUNET_CONTAINER_multihashmap_destroy (issuer);
 105         issuer = NULL;
 106 }
 107
 108 /* end of gnunet-daemon-experimentation_experiments.c */