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13 General Public License for more details.
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22 * @file identity/plugin_gnsrecord_identity.c
23 * @brief gnsrecord plugin to provide the API for identity records
24 * @author Christian Grothoff
27 #include "gnunet_util_lib.h"
28 #include "gnunet_gnsrecord_lib.h"
29 #include "gnunet_gnsrecord_plugin.h"
33 * Convert the 'value' of a record to a string.
35 * @param cls closure, unused
36 * @param type type of the record
37 * @param data value in binary encoding
38 * @param data_size number of bytes in @a data
39 * @return NULL on error, otherwise human-readable representation of the value
42 value_to_string (void *cls,
47 const struct GNUNET_CRYPTO_EcdhePrivateKey *ecdhe_privkey;
48 const struct GNUNET_CRYPTO_EcdsaPublicKey *audience_pubkey;
56 case GNUNET_GNSRECORD_TYPE_ID_ATTR:
57 return GNUNET_STRINGS_data_to_string_alloc (data, data_size);
58 case GNUNET_GNSRECORD_TYPE_ID_TOKEN: //DEPRECATED
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
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,
73 ecdhe_str, aud_str, scopes);
74 GNUNET_free (aud_str);
75 GNUNET_free (ecdhe_str);
85 * Convert human-readable version of a 'value' of a record to the binary
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
96 string_to_value (void *cls,
109 return GNUNET_SYSERR;
112 case GNUNET_GNSRECORD_TYPE_ID_ATTR:
113 return GNUNET_STRINGS_string_to_data (s,
117 case GNUNET_GNSRECORD_TYPE_ID_TOKEN:
118 *data = GNUNET_strdup (s);
119 *data_size = strlen (s);
121 case GNUNET_GNSRECORD_TYPE_ABE_KEY:
122 case GNUNET_GNSRECORD_TYPE_ABE_MASTER:
123 return GNUNET_STRINGS_string_to_data (s,
127 case GNUNET_GNSRECORD_TYPE_ID_TOKEN_METADATA:
128 tmp_tok = GNUNET_strdup (s);
129 ecdhe_str = strtok (tmp_tok, ";");
130 if (NULL == ecdhe_str)
132 GNUNET_free (tmp_tok);
133 return GNUNET_SYSERR;
135 aud_keystr = strtok (NULL, ";");
136 if (NULL == aud_keystr)
138 GNUNET_free (tmp_tok);
139 return GNUNET_SYSERR;
141 str = strtok (NULL, ";");
144 GNUNET_free (tmp_tok);
145 return GNUNET_SYSERR;
147 *data_size = strlen (str) + 1
148 +sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey)
149 +sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey);
150 *data = GNUNET_malloc (*data_size);
153 GNUNET_STRINGS_string_to_data (ecdhe_str,
156 sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey));
157 write_ptr += sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey);
158 GNUNET_STRINGS_string_to_data (aud_keystr,
161 sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
162 write_ptr += sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey);
163 GNUNET_memcpy (write_ptr, str, strlen (str) + 1); //with 0-Terminator
164 GNUNET_free (tmp_tok);
168 return GNUNET_SYSERR;
174 * Mapping of record type numbers to human-readable
181 { "ID_ATTR", GNUNET_GNSRECORD_TYPE_ID_ATTR },
182 { "ID_TOKEN", GNUNET_GNSRECORD_TYPE_ID_TOKEN },
183 { "ABE_KEY", GNUNET_GNSRECORD_TYPE_ABE_KEY },
184 { "ABE_MASTER", GNUNET_GNSRECORD_TYPE_ABE_MASTER },
185 { "ID_TOKEN_METADATA", GNUNET_GNSRECORD_TYPE_ID_TOKEN_METADATA },
191 * Convert a type name (i.e. "AAAA") to the corresponding number.
193 * @param cls closure, unused
194 * @param dns_typename name to convert
195 * @return corresponding number, UINT32_MAX on error
198 typename_to_number (void *cls,
199 const char *dns_typename)
204 while ( (NULL != name_map[i].name) &&
205 (0 != strcasecmp (dns_typename, name_map[i].name)) )
207 return name_map[i].number;
212 * Convert a type number (i.e. 1) to the corresponding type string (i.e. "A")
214 * @param cls closure, unused
215 * @param type number of a type to convert
216 * @return corresponding typestring, NULL on error
219 number_to_typename (void *cls,
225 while ( (NULL != name_map[i].name) &&
226 (type != name_map[i].number) )
228 return name_map[i].name;
233 * Entry point for the plugin.
236 * @return the exported block API
239 libgnunet_plugin_gnsrecord_identity_provider_init (void *cls)
241 struct GNUNET_GNSRECORD_PluginFunctions *api;
243 api = GNUNET_new (struct GNUNET_GNSRECORD_PluginFunctions);
244 api->value_to_string = &value_to_string;
245 api->string_to_value = &string_to_value;
246 api->typename_to_number = &typename_to_number;
247 api->number_to_typename = &number_to_typename;
253 * Exit point from the plugin.
255 * @param cls the return value from #libgnunet_plugin_block_test_init
259 libgnunet_plugin_gnsrecord_identity_provider_done (void *cls)
261 struct GNUNET_GNSRECORD_PluginFunctions *api = cls;
267 /* end of plugin_gnsrecord_dns.c */