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Diffstat (limited to 'src/reclaim/plugin_gnsrecord_reclaim.c')
-rw-r--r-- | src/reclaim/plugin_gnsrecord_reclaim.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/src/reclaim/plugin_gnsrecord_reclaim.c b/src/reclaim/plugin_gnsrecord_reclaim.c new file mode 100644 index 000000000..781b88abc --- /dev/null +++ b/src/reclaim/plugin_gnsrecord_reclaim.c | |||
@@ -0,0 +1,271 @@ | |||
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 reclaim/plugin_gnsrecord_reclaim.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 | const struct GNUNET_CRYPTO_EcdhePrivateKey *ecdhe_privkey; | ||
46 | const struct GNUNET_CRYPTO_EcdsaPublicKey *audience_pubkey; | ||
47 | const char *scopes; | ||
48 | char *ecdhe_str; | ||
49 | char *aud_str; | ||
50 | char *result; | ||
51 | |||
52 | switch (type) | ||
53 | { | ||
54 | case GNUNET_GNSRECORD_TYPE_ID_ATTR: | ||
55 | return GNUNET_STRINGS_data_to_string_alloc (data, data_size); | ||
56 | case GNUNET_GNSRECORD_TYPE_ID_TOKEN: //DEPRECATED | ||
57 | case GNUNET_GNSRECORD_TYPE_RECLAIM_OIDC_REDIRECT: | ||
58 | case GNUNET_GNSRECORD_TYPE_RECLAIM_OIDC_CLIENT: | ||
59 | return GNUNET_strndup (data, data_size); | ||
60 | case GNUNET_GNSRECORD_TYPE_ABE_KEY: | ||
61 | case GNUNET_GNSRECORD_TYPE_ABE_MASTER: | ||
62 | return GNUNET_STRINGS_data_to_string_alloc (data, data_size); | ||
63 | case GNUNET_GNSRECORD_TYPE_ID_TOKEN_METADATA: //DEPRECATED | ||
64 | ecdhe_privkey = data; | ||
65 | audience_pubkey = data+sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey); | ||
66 | scopes = (char*) audience_pubkey+(sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)); | ||
67 | ecdhe_str = GNUNET_STRINGS_data_to_string_alloc (ecdhe_privkey, | ||
68 | sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey)); | ||
69 | aud_str = GNUNET_STRINGS_data_to_string_alloc (audience_pubkey, | ||
70 | sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)); | ||
71 | GNUNET_asprintf (&result, | ||
72 | "%s;%s;%s", | ||
73 | ecdhe_str, aud_str, scopes); | ||
74 | GNUNET_free (aud_str); | ||
75 | GNUNET_free (ecdhe_str); | ||
76 | return result; | ||
77 | |||
78 | default: | ||
79 | return NULL; | ||
80 | } | ||
81 | } | ||
82 | |||
83 | |||
84 | /** | ||
85 | * Convert human-readable version of a 'value' of a record to the binary | ||
86 | * representation. | ||
87 | * | ||
88 | * @param cls closure, unused | ||
89 | * @param type type of the record | ||
90 | * @param s human-readable string | ||
91 | * @param data set to value in binary encoding (will be allocated) | ||
92 | * @param data_size set to number of bytes in @a data | ||
93 | * @return #GNUNET_OK on success | ||
94 | */ | ||
95 | static int | ||
96 | string_to_value (void *cls, | ||
97 | uint32_t type, | ||
98 | const char *s, | ||
99 | void **data, | ||
100 | size_t *data_size) | ||
101 | { | ||
102 | char* ecdhe_str; | ||
103 | char* aud_keystr; | ||
104 | char* write_ptr; | ||
105 | char* tmp_tok; | ||
106 | char* str; | ||
107 | |||
108 | if (NULL == s) | ||
109 | return GNUNET_SYSERR; | ||
110 | switch (type) | ||
111 | { | ||
112 | case GNUNET_GNSRECORD_TYPE_ID_ATTR: | ||
113 | return GNUNET_STRINGS_string_to_data (s, | ||
114 | strlen (s), | ||
115 | *data, | ||
116 | *data_size); | ||
117 | case GNUNET_GNSRECORD_TYPE_ID_TOKEN: | ||
118 | case GNUNET_GNSRECORD_TYPE_RECLAIM_OIDC_REDIRECT: | ||
119 | case GNUNET_GNSRECORD_TYPE_RECLAIM_OIDC_CLIENT: | ||
120 | *data = GNUNET_strdup (s); | ||
121 | *data_size = strlen (s); | ||
122 | return GNUNET_OK; | ||
123 | case GNUNET_GNSRECORD_TYPE_ABE_KEY: | ||
124 | case GNUNET_GNSRECORD_TYPE_ABE_MASTER: | ||
125 | return GNUNET_STRINGS_string_to_data (s, | ||
126 | strlen (s), | ||
127 | *data, | ||
128 | *data_size); | ||
129 | case GNUNET_GNSRECORD_TYPE_ID_TOKEN_METADATA: | ||
130 | tmp_tok = GNUNET_strdup (s); | ||
131 | ecdhe_str = strtok (tmp_tok, ";"); | ||
132 | if (NULL == ecdhe_str) | ||
133 | { | ||
134 | GNUNET_free (tmp_tok); | ||
135 | return GNUNET_SYSERR; | ||
136 | } | ||
137 | aud_keystr = strtok (NULL, ";"); | ||
138 | if (NULL == aud_keystr) | ||
139 | { | ||
140 | GNUNET_free (tmp_tok); | ||
141 | return GNUNET_SYSERR; | ||
142 | } | ||
143 | str = strtok (NULL, ";"); | ||
144 | if (NULL == str) | ||
145 | { | ||
146 | GNUNET_free (tmp_tok); | ||
147 | return GNUNET_SYSERR; | ||
148 | } | ||
149 | *data_size = strlen (str) + 1 | ||
150 | +sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey) | ||
151 | +sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey); | ||
152 | *data = GNUNET_malloc (*data_size); | ||
153 | |||
154 | write_ptr = *data; | ||
155 | GNUNET_STRINGS_string_to_data (ecdhe_str, | ||
156 | strlen (ecdhe_str), | ||
157 | write_ptr, | ||
158 | sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey)); | ||
159 | write_ptr += sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey); | ||
160 | GNUNET_STRINGS_string_to_data (aud_keystr, | ||
161 | strlen (aud_keystr), | ||
162 | write_ptr, | ||
163 | sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)); | ||
164 | write_ptr += sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey); | ||
165 | GNUNET_memcpy (write_ptr, str, strlen (str) + 1); //with 0-Terminator | ||
166 | GNUNET_free (tmp_tok); | ||
167 | return GNUNET_OK; | ||
168 | |||
169 | default: | ||
170 | return GNUNET_SYSERR; | ||
171 | } | ||
172 | } | ||
173 | |||
174 | |||
175 | /** | ||
176 | * Mapping of record type numbers to human-readable | ||
177 | * record type names. | ||
178 | */ | ||
179 | static struct { | ||
180 | const char *name; | ||
181 | uint32_t number; | ||
182 | } name_map[] = { | ||
183 | { "ID_ATTR", GNUNET_GNSRECORD_TYPE_ID_ATTR }, | ||
184 | { "ID_TOKEN", GNUNET_GNSRECORD_TYPE_ID_TOKEN }, | ||
185 | { "ABE_KEY", GNUNET_GNSRECORD_TYPE_ABE_KEY }, | ||
186 | { "ABE_MASTER", GNUNET_GNSRECORD_TYPE_ABE_MASTER }, | ||
187 | { "ID_TOKEN_METADATA", GNUNET_GNSRECORD_TYPE_ID_TOKEN_METADATA }, | ||
188 | { "RECLAIM_OIDC_CLIENT", GNUNET_GNSRECORD_TYPE_RECLAIM_OIDC_CLIENT }, | ||
189 | { "RECLAIM_OIDC_REDIRECT", GNUNET_GNSRECORD_TYPE_RECLAIM_OIDC_REDIRECT }, | ||
190 | { NULL, UINT32_MAX } | ||
191 | }; | ||
192 | |||
193 | |||
194 | /** | ||
195 | * Convert a type name (i.e. "AAAA") to the corresponding number. | ||
196 | * | ||
197 | * @param cls closure, unused | ||
198 | * @param dns_typename name to convert | ||
199 | * @return corresponding number, UINT32_MAX on error | ||
200 | */ | ||
201 | static uint32_t | ||
202 | typename_to_number (void *cls, | ||
203 | const char *dns_typename) | ||
204 | { | ||
205 | unsigned int i; | ||
206 | |||
207 | i=0; | ||
208 | while ( (NULL != name_map[i].name) && | ||
209 | (0 != strcasecmp (dns_typename, name_map[i].name)) ) | ||
210 | i++; | ||
211 | return name_map[i].number; | ||
212 | } | ||
213 | |||
214 | |||
215 | /** | ||
216 | * Convert a type number (i.e. 1) to the corresponding type string (i.e. "A") | ||
217 | * | ||
218 | * @param cls closure, unused | ||
219 | * @param type number of a type to convert | ||
220 | * @return corresponding typestring, NULL on error | ||
221 | */ | ||
222 | static const char * | ||
223 | number_to_typename (void *cls, | ||
224 | uint32_t type) | ||
225 | { | ||
226 | unsigned int i; | ||
227 | |||
228 | i=0; | ||
229 | while ( (NULL != name_map[i].name) && | ||
230 | (type != name_map[i].number) ) | ||
231 | i++; | ||
232 | return name_map[i].name; | ||
233 | } | ||
234 | |||
235 | |||
236 | /** | ||
237 | * Entry point for the plugin. | ||
238 | * | ||
239 | * @param cls NULL | ||
240 | * @return the exported block API | ||
241 | */ | ||
242 | void * | ||
243 | libgnunet_plugin_gnsrecord_reclaim_init (void *cls) | ||
244 | { | ||
245 | struct GNUNET_GNSRECORD_PluginFunctions *api; | ||
246 | |||
247 | api = GNUNET_new (struct GNUNET_GNSRECORD_PluginFunctions); | ||
248 | api->value_to_string = &value_to_string; | ||
249 | api->string_to_value = &string_to_value; | ||
250 | api->typename_to_number = &typename_to_number; | ||
251 | api->number_to_typename = &number_to_typename; | ||
252 | return api; | ||
253 | } | ||
254 | |||
255 | |||
256 | /** | ||
257 | * Exit point from the plugin. | ||
258 | * | ||
259 | * @param cls the return value from #libgnunet_plugin_block_test_init | ||
260 | * @return NULL | ||
261 | */ | ||
262 | void * | ||
263 | libgnunet_plugin_gnsrecord_reclaim_done (void *cls) | ||
264 | { | ||
265 | struct GNUNET_GNSRECORD_PluginFunctions *api = cls; | ||
266 | |||
267 | GNUNET_free (api); | ||
268 | return NULL; | ||
269 | } | ||
270 | |||
271 | /* end of plugin_gnsrecord_dns.c */ | ||