summaryrefslogtreecommitdiff
path: root/src/set/plugin_block_set_test.c
blob: 3d66831bb90cf6dc68a8a470504c5972fca4f313 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
/*
     This file is part of GNUnet
     Copyright (C) 2017 GNUnet e.V.

     GNUnet is free software: you can redistribute it and/or modify it
     under the terms of the GNU Affero General Public License as published
     by the Free Software Foundation, either version 3 of the License,
     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
     Affero General Public License for more details.

     You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.

     SPDX-License-Identifier: AGPL3.0-or-later
 */

/**
 * @file set/plugin_block_set_test.c
 * @brief set test block, recognizes elements with non-zero first byte as invalid
 * @author Christian Grothoff
 */

#include "platform.h"
#include "gnunet_block_plugin.h"
#include "gnunet_block_group_lib.h"


/**
 * Function called to validate a reply or a request.  For
 * request evaluation, simply pass "NULL" for the reply_block.
 *
 * @param cls closure
 * @param ctx block context
 * @param type block type
 * @param group block group to use
 * @param eo control flags
 * @param query original query (hash)
 * @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_set_test_evaluate (void *cls,
                                struct GNUNET_BLOCK_Context *ctx,
                                enum GNUNET_BLOCK_Type type,
                                struct GNUNET_BLOCK_Group *group,
                                enum GNUNET_BLOCK_EvaluationOptions eo,
                                const struct GNUNET_HashCode *query,
                                const void *xquery,
                                size_t xquery_size,
                                const void *reply_block,
                                size_t reply_block_size)
{
  if ((NULL == reply_block) ||
      (reply_block_size == 0) ||
      (0 != ((char *) reply_block)[0]))
    return GNUNET_BLOCK_EVALUATION_RESULT_INVALID;
  return GNUNET_BLOCK_EVALUATION_OK_MORE;
}


/**
 * Function called to validate a query.
 *
 * @param cls closure
 * @param ctx block context
 * @param type block type
 * @param query original query (hash)
 * @param xquery extrended query data (can be NULL, depending on type)
 * @param xquery_size number of bytes in @a xquery
 * @return #GNUNET_OK if the query is fine, #GNUNET_NO if not
 */
static enum GNUNET_GenericReturnValue
block_plugin_set_test_check_query (void *cls,
                                    enum GNUNET_BLOCK_Type type,
                                    const struct GNUNET_HashCode *query,
                                    const void *xquery,
                                    size_t xquery_size)
{
  return GNUNET_OK;
}


/**
 * Function called to validate a block for storage.
 *
 * @param cls closure
 * @param type block type
 * @param query key for the block (hash), must match exactly
 * @param block block data to validate
 * @param block_size number of bytes in @a block
 * @return #GNUNET_OK if the block is fine, #GNUNET_NO if not
 */
static enum GNUNET_GenericReturnValue
block_plugin_set_test_check_block (void *cls,
                                    enum GNUNET_BLOCK_Type type,
                                    const struct GNUNET_HashCode *query,
                                    const void *block,
                                    size_t block_size)
{
  if ((NULL == block) ||
      (0 == block_size) ||
      (0 != ((char *) block)[0]))
    return GNUNET_SYSERR;
  return GNUNET_OK;
}


/**
 * Function called to validate a reply to a request.  Note that it is assumed
 * that the reply has already been matched to the key (and signatures checked)
 * as it would be done with the GetKeyFunction and the
 * BlockEvaluationFunction.
 *
 * @param cls closure
 * @param type block type
 * @param group which block group to use for evaluation
 * @param query original query (hash)
 * @param xquery extrended query data (can be NULL, depending on type)
 * @param xquery_size number of bytes in @a xquery
 * @param reply_block response to validate
 * @param reply_block_size number of bytes in @a reply_block
 * @return characterization of result
 */
static enum GNUNET_BLOCK_ReplyEvaluationResult
block_plugin_set_test_check_reply (void *cls,
                                    enum GNUNET_BLOCK_Type type,
                                    struct GNUNET_BLOCK_Group *group,
                                    const struct GNUNET_HashCode *query,
                                    const void *xquery,
                                    size_t xquery_size,
                                    const void *reply_block,
                                    size_t reply_block_size)
{
  if ((NULL == reply_block) ||
      (0 == reply_block_size) ||
      (0 != ((char *) reply_block)[0]))
    return GNUNET_BLOCK_REPLY_INVALID;
  return GNUNET_BLOCK_REPLY_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 enum GNUNET_GenericReturnValue
block_plugin_set_test_get_key (void *cls,
                               enum GNUNET_BLOCK_Type type,
                               const void *block,
                               size_t block_size,
                               struct GNUNET_HashCode *key)
{
  return GNUNET_SYSERR;
}


/**
 * Entry point for the plugin.
 */
void *
libgnunet_plugin_block_set_test_init (void *cls)
{
  static const enum GNUNET_BLOCK_Type types[] = {
    GNUNET_BLOCK_TYPE_SET_TEST,
    GNUNET_BLOCK_TYPE_ANY       /* end of list */
  };
  struct GNUNET_BLOCK_PluginFunctions *api;

  api = GNUNET_new (struct GNUNET_BLOCK_PluginFunctions);
  api->evaluate = &block_plugin_set_test_evaluate;
  api->get_key = &block_plugin_set_test_get_key;
  api->check_query = &block_plugin_set_test_check_query;
  api->check_block = &block_plugin_set_test_check_block;
  api->check_reply = &block_plugin_set_test_check_reply;
  api->types = types;
  return api;
}


/**
 * Exit point from the plugin.
 */
void *
libgnunet_plugin_block_set_test_done (void *cls)
{
  struct GNUNET_BLOCK_PluginFunctions *api = cls;

  GNUNET_free (api);
  return NULL;
}


/* end of plugin_block_set_test.c */