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Diffstat (limited to 'src/include/gnunet_reclaim_attribute_lib.h')
-rw-r--r-- | src/include/gnunet_reclaim_attribute_lib.h | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/src/include/gnunet_reclaim_attribute_lib.h b/src/include/gnunet_reclaim_attribute_lib.h new file mode 100644 index 000000000..9b928328e --- /dev/null +++ b/src/include/gnunet_reclaim_attribute_lib.h | |||
@@ -0,0 +1,287 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2017 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 | * @author Martin Schanzenbach | ||
21 | * | ||
22 | * @file | ||
23 | * Identity attribute definitions | ||
24 | * | ||
25 | * @defgroup identity-provider Identity Provider service | ||
26 | * @{ | ||
27 | */ | ||
28 | #ifndef GNUNET_RECLAIM_ATTRIBUTE_LIB_H | ||
29 | #define GNUNET_RECLAIM_ATTRIBUTE_LIB_H | ||
30 | |||
31 | #ifdef __cplusplus | ||
32 | extern "C" | ||
33 | { | ||
34 | #if 0 /* keep Emacsens' auto-indent happy */ | ||
35 | } | ||
36 | #endif | ||
37 | #endif | ||
38 | |||
39 | #include "gnunet_util_lib.h" | ||
40 | |||
41 | |||
42 | /** | ||
43 | * No value attribute. | ||
44 | */ | ||
45 | #define GNUNET_RECLAIM_ATTRIBUTE_TYPE_NONE 0 | ||
46 | |||
47 | /** | ||
48 | * String attribute. | ||
49 | */ | ||
50 | #define GNUNET_RECLAIM_ATTRIBUTE_TYPE_STRING 1 | ||
51 | |||
52 | |||
53 | /** | ||
54 | * ZKlaim attribute. | ||
55 | */ | ||
56 | #define GNUNET_RECLAIM_ATTRIBUTE_TYPE_ZKLAIM 2 | ||
57 | |||
58 | |||
59 | |||
60 | /** | ||
61 | * An attribute. | ||
62 | */ | ||
63 | struct GNUNET_RECLAIM_ATTRIBUTE_Claim | ||
64 | { | ||
65 | /** | ||
66 | * The name of the attribute. Note "name" must never be individually | ||
67 | * free'd | ||
68 | */ | ||
69 | const char* name; | ||
70 | |||
71 | /** | ||
72 | * Type of Claim | ||
73 | */ | ||
74 | uint32_t type; | ||
75 | |||
76 | /** | ||
77 | * Version | ||
78 | */ | ||
79 | uint32_t version; | ||
80 | |||
81 | /** | ||
82 | * Number of bytes in @e data. | ||
83 | */ | ||
84 | size_t data_size; | ||
85 | |||
86 | /** | ||
87 | * Binary value stored as attribute value. Note: "data" must never | ||
88 | * be individually 'malloc'ed, but instead always points into some | ||
89 | * existing data area. | ||
90 | */ | ||
91 | const void *data; | ||
92 | |||
93 | }; | ||
94 | |||
95 | struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList | ||
96 | { | ||
97 | /** | ||
98 | * List head | ||
99 | */ | ||
100 | struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *list_head; | ||
101 | |||
102 | /** | ||
103 | * List tail | ||
104 | */ | ||
105 | struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *list_tail; | ||
106 | }; | ||
107 | |||
108 | struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry | ||
109 | { | ||
110 | /** | ||
111 | * DLL | ||
112 | */ | ||
113 | struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *prev; | ||
114 | |||
115 | /** | ||
116 | * DLL | ||
117 | */ | ||
118 | struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *next; | ||
119 | |||
120 | /** | ||
121 | * The attribute claim | ||
122 | */ | ||
123 | struct GNUNET_RECLAIM_ATTRIBUTE_Claim *claim; | ||
124 | }; | ||
125 | |||
126 | /** | ||
127 | * Create a new attribute claim. | ||
128 | * | ||
129 | * @param attr_name the attribute name | ||
130 | * @param type the attribute type | ||
131 | * @param data the attribute value | ||
132 | * @param data_size the attribute value size | ||
133 | * @return the new attribute | ||
134 | */ | ||
135 | struct GNUNET_RECLAIM_ATTRIBUTE_Claim * | ||
136 | GNUNET_RECLAIM_ATTRIBUTE_claim_new (const char* attr_name, | ||
137 | uint32_t type, | ||
138 | const void* data, | ||
139 | size_t data_size); | ||
140 | |||
141 | |||
142 | /** | ||
143 | * Get required size for serialization buffer | ||
144 | * | ||
145 | * @param attrs the attribute list to serialize | ||
146 | * | ||
147 | * @return the required buffer size | ||
148 | */ | ||
149 | size_t | ||
150 | GNUNET_RECLAIM_ATTRIBUTE_list_serialize_get_size (const struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs); | ||
151 | |||
152 | void | ||
153 | GNUNET_RECLAIM_ATTRIBUTE_list_destroy (struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs); | ||
154 | |||
155 | void | ||
156 | GNUNET_RECLAIM_ATTRIBUTE_list_add (struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs, | ||
157 | const char* attr_name, | ||
158 | uint32_t type, | ||
159 | const void* data, | ||
160 | size_t data_size); | ||
161 | |||
162 | /** | ||
163 | * Serialize an attribute list | ||
164 | * | ||
165 | * @param attrs the attribute list to serialize | ||
166 | * @param result the serialized attribute | ||
167 | * | ||
168 | * @return length of serialized data | ||
169 | */ | ||
170 | size_t | ||
171 | GNUNET_RECLAIM_ATTRIBUTE_list_serialize (const struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs, | ||
172 | char *result); | ||
173 | |||
174 | /** | ||
175 | * Deserialize an attribute list | ||
176 | * | ||
177 | * @param data the serialized attribute list | ||
178 | * @param data_size the length of the serialized data | ||
179 | * | ||
180 | * @return a GNUNET_IDENTITY_PROVIDER_AttributeList, must be free'd by caller | ||
181 | */ | ||
182 | struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList * | ||
183 | GNUNET_RECLAIM_ATTRIBUTE_list_deserialize (const char* data, | ||
184 | size_t data_size); | ||
185 | |||
186 | |||
187 | /** | ||
188 | * Get required size for serialization buffer | ||
189 | * | ||
190 | * @param attr the attribute to serialize | ||
191 | * | ||
192 | * @return the required buffer size | ||
193 | */ | ||
194 | size_t | ||
195 | GNUNET_RECLAIM_ATTRIBUTE_serialize_get_size (const struct GNUNET_RECLAIM_ATTRIBUTE_Claim *attr); | ||
196 | |||
197 | |||
198 | |||
199 | /** | ||
200 | * Serialize an attribute | ||
201 | * | ||
202 | * @param attr the attribute to serialize | ||
203 | * @param result the serialized attribute | ||
204 | * | ||
205 | * @return length of serialized data | ||
206 | */ | ||
207 | size_t | ||
208 | GNUNET_RECLAIM_ATTRIBUTE_serialize (const struct GNUNET_RECLAIM_ATTRIBUTE_Claim *attr, | ||
209 | char *result); | ||
210 | |||
211 | /** | ||
212 | * Deserialize an attribute | ||
213 | * | ||
214 | * @param data the serialized attribute | ||
215 | * @param data_size the length of the serialized data | ||
216 | * | ||
217 | * @return a GNUNET_IDENTITY_PROVIDER_Attribute, must be free'd by caller | ||
218 | */ | ||
219 | struct GNUNET_RECLAIM_ATTRIBUTE_Claim * | ||
220 | GNUNET_RECLAIM_ATTRIBUTE_deserialize (const char* data, | ||
221 | size_t data_size); | ||
222 | |||
223 | struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList* | ||
224 | GNUNET_RECLAIM_ATTRIBUTE_list_dup (const struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs); | ||
225 | |||
226 | /** | ||
227 | * Convert a type name to the corresponding number | ||
228 | * | ||
229 | * @param typename name to convert | ||
230 | * @return corresponding number, UINT32_MAX on error | ||
231 | */ | ||
232 | uint32_t | ||
233 | GNUNET_RECLAIM_ATTRIBUTE_typename_to_number (const char *typename); | ||
234 | |||
235 | /** | ||
236 | * Convert human-readable version of a 'claim' of an attribute to the binary | ||
237 | * representation | ||
238 | * | ||
239 | * @param type type of the claim | ||
240 | * @param s human-readable string | ||
241 | * @param data set to value in binary encoding (will be allocated) | ||
242 | * @param data_size set to number of bytes in @a data | ||
243 | * @return #GNUNET_OK on success | ||
244 | */ | ||
245 | int | ||
246 | GNUNET_RECLAIM_ATTRIBUTE_string_to_value (uint32_t type, | ||
247 | const char *s, | ||
248 | void **data, | ||
249 | size_t *data_size); | ||
250 | |||
251 | /** | ||
252 | * Convert the 'claim' of an attribute to a string | ||
253 | * | ||
254 | * @param type the type of attribute | ||
255 | * @param data claim in binary encoding | ||
256 | * @param data_size number of bytes in @a data | ||
257 | * @return NULL on error, otherwise human-readable representation of the claim | ||
258 | */ | ||
259 | char * | ||
260 | GNUNET_RECLAIM_ATTRIBUTE_value_to_string (uint32_t type, | ||
261 | const void* data, | ||
262 | size_t data_size); | ||
263 | |||
264 | /** | ||
265 | * Convert a type number to the corresponding type string | ||
266 | * | ||
267 | * @param type number of a type | ||
268 | * @return corresponding typestring, NULL on error | ||
269 | */ | ||
270 | const char* | ||
271 | GNUNET_RECLAIM_ATTRIBUTE_number_to_typename (uint32_t type); | ||
272 | |||
273 | |||
274 | #if 0 /* keep Emacsens' auto-indent happy */ | ||
275 | { | ||
276 | #endif | ||
277 | #ifdef __cplusplus | ||
278 | } | ||
279 | #endif | ||
280 | |||
281 | |||
282 | /* ifndef GNUNET_RECLAIM_ATTRIBUTE_LIB_H */ | ||
283 | #endif | ||
284 | |||
285 | /** @} */ /* end of group identity */ | ||
286 | |||
287 | /* end of gnunet_reclaim_attribute_lib.h */ | ||