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Diffstat (limited to 'src/block/plugin_block_test.c')
| -rw-r--r-- | src/block/plugin_block_test.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/src/block/plugin_block_test.c b/src/block/plugin_block_test.c new file mode 100644 index 0000000000..1cf8c701dc --- /dev/null +++ b/src/block/plugin_block_test.c @@ -0,0 +1,154 @@ +/* + This file is part of GNUnet + (C) 2010 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 block/plugin_block_test.c + * @brief block plugin to test the DHT as a simple key-value store; + * this plugin simply accepts any (new) response for any key + * @author Christian Grothoff + */ + +#include "platform.h" +#include "plugin_block.h" + +#define DEBUG_TEST GNUNET_NO + + +/** + * Number of bits we set per entry in the bloomfilter. + * Do not change! + */ +#define BLOOMFILTER_K 16 + +/** + * Function called to validate a reply or a request. For + * request evaluation, simply pass "NULL" for the reply_block. + * + * @param cls closure + * @param type block type + * @param query original query (hash) + * @param bf pointer to bloom filter associated with query; possibly updated (!) + * @param bf_mutator mutation value for bf + * @param xquery extrended query data (can be NULL, depending on type) + * @param xquery_size number of bytes in xquery + * @param reply_block response to validate + * @param reply_block_size number of bytes in reply block + * @return characterization of result + */ +static enum GNUNET_BLOCK_EvaluationResult +block_plugin_test_evaluate (void *cls, + enum GNUNET_BLOCK_Type type, + const GNUNET_HashCode *query, + struct GNUNET_CONTAINER_BloomFilter **bf, + int32_t bf_mutator, + const void *xquery, + size_t xquery_size, + const void *reply_block, + size_t reply_block_size) +{ + GNUNET_HashCode chash; + GNUNET_HashCode mhash; + + if (type != GNUNET_BLOCK_TYPE_TEST) + return GNUNET_BLOCK_EVALUATION_TYPE_NOT_SUPPORTED; + if (xquery_size != 0) + GNUNET_BLOCK_EVALUATION_REQUEST_INVALID; + if (reply_block_size == 0) + GNUNET_BLOCK_EVALUATION_REQUEST_VALID; + + GNUNET_CRYPTO_hash (reply_block, + reply_block_size, + &chash); + GNUNET_BLOCK_mingle_hash (&chash, bf_mutator, &mhash); + if (NULL != *bf) + { + if (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (*bf, + &mhash)) + return GNUNET_BLOCK_EVALUATION_OK_DUPLICATE; + } + else + { + *bf = GNUNET_CONTAINER_bloomfilter_init (NULL, + 8, + BLOOMFILTER_K); + } + GNUNET_CONTAINER_bloomfilter_add (*bf, &mhash); + return GNUNET_BLOCK_EVALUATION_OK_MORE; +} + + +/** + * Function called to obtain the key for a block. + * + * @param cls closure + * @param type block type + * @param block block to get the key for + * @param block_size number of bytes in block + * @param key set to the key (query) for the given block + * @return GNUNET_OK on success, GNUNET_SYSERR if type not supported + * (or if extracting a key from a block of this type does not work) + */ +static int +block_plugin_test_get_key (void *cls, + enum GNUNET_BLOCK_Type type, + const void *block, + size_t block_size, + GNUNET_HashCode *key) +{ + /* always fails since there is no fixed relationship between + keys and values for test values */ + return GNUNET_SYSERR; +} + + +/** + * Entry point for the plugin. + */ +void * +gnunet_plugin_block_test_init (void *cls) +{ + static enum GNUNET_BLOCK_Type types[] = + { + GNUNET_BLOCK_TYPE_TEST, + GNUNET_BLOCK_TYPE_ANY /* end of list */ + }; + struct GNUNET_BLOCK_PluginFunctions *api; + + api = GNUNET_malloc (sizeof (struct GNUNET_BLOCK_PluginFunctions)); + api->evaluate = &block_plugin_test_evaluate; + api->get_key = &block_plugin_test_get_key; + api->types = types; + return api; +} + + +/** + * Exit point from the plugin. + */ +void * +gnunet_plugin_block_test_done (void *cls) +{ + struct GNUNET_TRANSPORT_PluginFunctions *api = cls; + + GNUNET_free (api); + return NULL; +} + +/* end of plugin_block_test.c */ |