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Diffstat (limited to 'src/zklaim/plugin_gnsrecord_zklaim.c')
-rw-r--r-- | src/zklaim/plugin_gnsrecord_zklaim.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/src/zklaim/plugin_gnsrecord_zklaim.c b/src/zklaim/plugin_gnsrecord_zklaim.c new file mode 100644 index 000000000..7e032d210 --- /dev/null +++ b/src/zklaim/plugin_gnsrecord_zklaim.c | |||
@@ -0,0 +1,178 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet | ||
3 | Copyright (C) 2013, 2014 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your 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 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | */ | ||
18 | |||
19 | /** | ||
20 | * @file zklaim/plugin_gnsrecord_zklaim.c | ||
21 | * @brief gnsrecord plugin to provide the API for identity records | ||
22 | * @author Martin Schanzenbach | ||
23 | */ | ||
24 | #include "platform.h" | ||
25 | #include "gnunet_util_lib.h" | ||
26 | #include "gnunet_gnsrecord_lib.h" | ||
27 | #include "gnunet_gnsrecord_plugin.h" | ||
28 | |||
29 | |||
30 | /** | ||
31 | * Convert the 'value' of a record to a string. | ||
32 | * | ||
33 | * @param cls closure, unused | ||
34 | * @param type type of the record | ||
35 | * @param data value in binary encoding | ||
36 | * @param data_size number of bytes in @a data | ||
37 | * @return NULL on error, otherwise human-readable representation of the value | ||
38 | */ | ||
39 | static char * | ||
40 | value_to_string (void *cls, | ||
41 | uint32_t type, | ||
42 | const void *data, | ||
43 | size_t data_size) | ||
44 | { | ||
45 | switch (type) | ||
46 | { | ||
47 | case GNUNET_GNSRECORD_TYPE_ZKLAIM_CTX: | ||
48 | return GNUNET_STRINGS_data_to_string_alloc (data, data_size); | ||
49 | default: | ||
50 | return NULL; | ||
51 | } | ||
52 | } | ||
53 | |||
54 | |||
55 | /** | ||
56 | * Convert human-readable version of a 'value' of a record to the binary | ||
57 | * representation. | ||
58 | * | ||
59 | * @param cls closure, unused | ||
60 | * @param type type of the record | ||
61 | * @param s human-readable string | ||
62 | * @param data set to value in binary encoding (will be allocated) | ||
63 | * @param data_size set to number of bytes in @a data | ||
64 | * @return #GNUNET_OK on success | ||
65 | */ | ||
66 | static int | ||
67 | string_to_value (void *cls, | ||
68 | uint32_t type, | ||
69 | const char *s, | ||
70 | void **data, | ||
71 | size_t *data_size) | ||
72 | { | ||
73 | if (NULL == s) | ||
74 | return GNUNET_SYSERR; | ||
75 | switch (type) | ||
76 | { | ||
77 | case GNUNET_GNSRECORD_TYPE_ZKLAIM_CTX: | ||
78 | return GNUNET_STRINGS_string_to_data (s, | ||
79 | strlen (s), | ||
80 | *data, | ||
81 | *data_size); | ||
82 | default: | ||
83 | return GNUNET_SYSERR; | ||
84 | } | ||
85 | } | ||
86 | |||
87 | |||
88 | /** | ||
89 | * Mapping of record type numbers to human-readable | ||
90 | * record type names. | ||
91 | */ | ||
92 | static struct { | ||
93 | const char *name; | ||
94 | uint32_t number; | ||
95 | } name_map[] = { | ||
96 | { "ZKLAIM_CTX", GNUNET_GNSRECORD_TYPE_ZKLAIM_CTX }, | ||
97 | { NULL, UINT32_MAX } | ||
98 | }; | ||
99 | |||
100 | |||
101 | /** | ||
102 | * Convert a type name (i.e. "AAAA") to the corresponding number. | ||
103 | * | ||
104 | * @param cls closure, unused | ||
105 | * @param dns_typename name to convert | ||
106 | * @return corresponding number, UINT32_MAX on error | ||
107 | */ | ||
108 | static uint32_t | ||
109 | typename_to_number (void *cls, | ||
110 | const char *dns_typename) | ||
111 | { | ||
112 | unsigned int i; | ||
113 | |||
114 | i=0; | ||
115 | while ( (NULL != name_map[i].name) && | ||
116 | (0 != strcasecmp (dns_typename, name_map[i].name)) ) | ||
117 | i++; | ||
118 | return name_map[i].number; | ||
119 | } | ||
120 | |||
121 | |||
122 | /** | ||
123 | * Convert a type number (i.e. 1) to the corresponding type string (i.e. "A") | ||
124 | * | ||
125 | * @param cls closure, unused | ||
126 | * @param type number of a type to convert | ||
127 | * @return corresponding typestring, NULL on error | ||
128 | */ | ||
129 | static const char * | ||
130 | number_to_typename (void *cls, | ||
131 | uint32_t type) | ||
132 | { | ||
133 | unsigned int i; | ||
134 | |||
135 | i=0; | ||
136 | while ( (NULL != name_map[i].name) && | ||
137 | (type != name_map[i].number) ) | ||
138 | i++; | ||
139 | return name_map[i].name; | ||
140 | } | ||
141 | |||
142 | |||
143 | /** | ||
144 | * Entry point for the plugin. | ||
145 | * | ||
146 | * @param cls NULL | ||
147 | * @return the exported block API | ||
148 | */ | ||
149 | void * | ||
150 | libgnunet_plugin_gnsrecord_zklaim_init (void *cls) | ||
151 | { | ||
152 | struct GNUNET_GNSRECORD_PluginFunctions *api; | ||
153 | |||
154 | api = GNUNET_new (struct GNUNET_GNSRECORD_PluginFunctions); | ||
155 | api->value_to_string = &value_to_string; | ||
156 | api->string_to_value = &string_to_value; | ||
157 | api->typename_to_number = &typename_to_number; | ||
158 | api->number_to_typename = &number_to_typename; | ||
159 | return api; | ||
160 | } | ||
161 | |||
162 | |||
163 | /** | ||
164 | * Exit point from the plugin. | ||
165 | * | ||
166 | * @param cls the return value from #libgnunet_plugin_block_test_init | ||
167 | * @return NULL | ||
168 | */ | ||
169 | void * | ||
170 | libgnunet_plugin_gnsrecord_zklaim_done (void *cls) | ||
171 | { | ||
172 | struct GNUNET_GNSRECORD_PluginFunctions *api = cls; | ||
173 | |||
174 | GNUNET_free (api); | ||
175 | return NULL; | ||
176 | } | ||
177 | |||
178 | /* end of plugin_gnsrecord_dns.c */ | ||