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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 000000000..1cf8c701d --- /dev/null +++ b/src/block/plugin_block_test.c | |||
@@ -0,0 +1,154 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet | ||
3 | (C) 2010 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 block/plugin_block_test.c | ||
23 | * @brief block plugin to test the DHT as a simple key-value store; | ||
24 | * this plugin simply accepts any (new) response for any key | ||
25 | * @author Christian Grothoff | ||
26 | */ | ||
27 | |||
28 | #include "platform.h" | ||
29 | #include "plugin_block.h" | ||
30 | |||
31 | #define DEBUG_TEST GNUNET_NO | ||
32 | |||
33 | |||
34 | /** | ||
35 | * Number of bits we set per entry in the bloomfilter. | ||
36 | * Do not change! | ||
37 | */ | ||
38 | #define BLOOMFILTER_K 16 | ||
39 | |||
40 | /** | ||
41 | * Function called to validate a reply or a request. For | ||
42 | * request evaluation, simply pass "NULL" for the reply_block. | ||
43 | * | ||
44 | * @param cls closure | ||
45 | * @param type block type | ||
46 | * @param query original query (hash) | ||
47 | * @param bf pointer to bloom filter associated with query; possibly updated (!) | ||
48 | * @param bf_mutator mutation value for bf | ||
49 | * @param xquery extrended query data (can be NULL, depending on type) | ||
50 | * @param xquery_size number of bytes in xquery | ||
51 | * @param reply_block response to validate | ||
52 | * @param reply_block_size number of bytes in reply block | ||
53 | * @return characterization of result | ||
54 | */ | ||
55 | static enum GNUNET_BLOCK_EvaluationResult | ||
56 | block_plugin_test_evaluate (void *cls, | ||
57 | enum GNUNET_BLOCK_Type type, | ||
58 | const GNUNET_HashCode *query, | ||
59 | struct GNUNET_CONTAINER_BloomFilter **bf, | ||
60 | int32_t bf_mutator, | ||
61 | const void *xquery, | ||
62 | size_t xquery_size, | ||
63 | const void *reply_block, | ||
64 | size_t reply_block_size) | ||
65 | { | ||
66 | GNUNET_HashCode chash; | ||
67 | GNUNET_HashCode mhash; | ||
68 | |||
69 | if (type != GNUNET_BLOCK_TYPE_TEST) | ||
70 | return GNUNET_BLOCK_EVALUATION_TYPE_NOT_SUPPORTED; | ||
71 | if (xquery_size != 0) | ||
72 | GNUNET_BLOCK_EVALUATION_REQUEST_INVALID; | ||
73 | if (reply_block_size == 0) | ||
74 | GNUNET_BLOCK_EVALUATION_REQUEST_VALID; | ||
75 | |||
76 | GNUNET_CRYPTO_hash (reply_block, | ||
77 | reply_block_size, | ||
78 | &chash); | ||
79 | GNUNET_BLOCK_mingle_hash (&chash, bf_mutator, &mhash); | ||
80 | if (NULL != *bf) | ||
81 | { | ||
82 | if (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (*bf, | ||
83 | &mhash)) | ||
84 | return GNUNET_BLOCK_EVALUATION_OK_DUPLICATE; | ||
85 | } | ||
86 | else | ||
87 | { | ||
88 | *bf = GNUNET_CONTAINER_bloomfilter_init (NULL, | ||
89 | 8, | ||
90 | BLOOMFILTER_K); | ||
91 | } | ||
92 | GNUNET_CONTAINER_bloomfilter_add (*bf, &mhash); | ||
93 | return GNUNET_BLOCK_EVALUATION_OK_MORE; | ||
94 | } | ||
95 | |||
96 | |||
97 | /** | ||
98 | * Function called to obtain the key for a block. | ||
99 | * | ||
100 | * @param cls closure | ||
101 | * @param type block type | ||
102 | * @param block block to get the key for | ||
103 | * @param block_size number of bytes in block | ||
104 | * @param key set to the key (query) for the given block | ||
105 | * @return GNUNET_OK on success, GNUNET_SYSERR if type not supported | ||
106 | * (or if extracting a key from a block of this type does not work) | ||
107 | */ | ||
108 | static int | ||
109 | block_plugin_test_get_key (void *cls, | ||
110 | enum GNUNET_BLOCK_Type type, | ||
111 | const void *block, | ||
112 | size_t block_size, | ||
113 | GNUNET_HashCode *key) | ||
114 | { | ||
115 | /* always fails since there is no fixed relationship between | ||
116 | keys and values for test values */ | ||
117 | return GNUNET_SYSERR; | ||
118 | } | ||
119 | |||
120 | |||
121 | /** | ||
122 | * Entry point for the plugin. | ||
123 | */ | ||
124 | void * | ||
125 | gnunet_plugin_block_test_init (void *cls) | ||
126 | { | ||
127 | static enum GNUNET_BLOCK_Type types[] = | ||
128 | { | ||
129 | GNUNET_BLOCK_TYPE_TEST, | ||
130 | GNUNET_BLOCK_TYPE_ANY /* end of list */ | ||
131 | }; | ||
132 | struct GNUNET_BLOCK_PluginFunctions *api; | ||
133 | |||
134 | api = GNUNET_malloc (sizeof (struct GNUNET_BLOCK_PluginFunctions)); | ||
135 | api->evaluate = &block_plugin_test_evaluate; | ||
136 | api->get_key = &block_plugin_test_get_key; | ||
137 | api->types = types; | ||
138 | return api; | ||
139 | } | ||
140 | |||
141 | |||
142 | /** | ||
143 | * Exit point from the plugin. | ||
144 | */ | ||
145 | void * | ||
146 | gnunet_plugin_block_test_done (void *cls) | ||
147 | { | ||
148 | struct GNUNET_TRANSPORT_PluginFunctions *api = cls; | ||
149 | |||
150 | GNUNET_free (api); | ||
151 | return NULL; | ||
152 | } | ||
153 | |||
154 | /* end of plugin_block_test.c */ | ||