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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 case GNUNET_GNSRECORD_TYPE_ID_TOKEN:
58 return GNUNET_strndup (data, data_size);
59 case GNUNET_GNSRECORD_TYPE_ABE_KEY:
60 case GNUNET_GNSRECORD_TYPE_ABE_MASTER:
61 return GNUNET_STRINGS_data_to_string_alloc (data, data_size);
62 case GNUNET_GNSRECORD_TYPE_ID_TOKEN_METADATA:
64 audience_pubkey = data+sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey);
65 scopes = (char*) audience_pubkey+(sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
66 ecdhe_str = GNUNET_STRINGS_data_to_string_alloc (ecdhe_privkey,
67 sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey));
68 aud_str = GNUNET_STRINGS_data_to_string_alloc (audience_pubkey,
69 sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
70 GNUNET_asprintf (&result,
72 ecdhe_str, aud_str, scopes);
73 GNUNET_free (aud_str);
74 GNUNET_free (ecdhe_str);
84 * Convert human-readable version of a 'value' of a record to the binary
87 * @param cls closure, unused
88 * @param type type of the record
89 * @param s human-readable string
90 * @param data set to value in binary encoding (will be allocated)
91 * @param data_size set to number of bytes in @a data
92 * @return #GNUNET_OK on success
95 string_to_value (void *cls,
108 return GNUNET_SYSERR;
111 case GNUNET_GNSRECORD_TYPE_ID_ATTR:
112 case GNUNET_GNSRECORD_TYPE_ID_TOKEN:
113 *data = GNUNET_strdup (s);
114 *data_size = strlen (s);
116 case GNUNET_GNSRECORD_TYPE_ABE_KEY:
117 case GNUNET_GNSRECORD_TYPE_ABE_MASTER:
118 return GNUNET_STRINGS_string_to_data (s,
122 case GNUNET_GNSRECORD_TYPE_ID_TOKEN_METADATA:
123 tmp_tok = GNUNET_strdup (s);
124 ecdhe_str = strtok (tmp_tok, ";");
125 if (NULL == ecdhe_str)
127 GNUNET_free (tmp_tok);
128 return GNUNET_SYSERR;
130 aud_keystr = strtok (NULL, ";");
131 if (NULL == aud_keystr)
133 GNUNET_free (tmp_tok);
134 return GNUNET_SYSERR;
136 str = strtok (NULL, ";");
139 GNUNET_free (tmp_tok);
140 return GNUNET_SYSERR;
142 *data_size = strlen (str) + 1
143 +sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey)
144 +sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey);
145 *data = GNUNET_malloc (*data_size);
148 GNUNET_STRINGS_string_to_data (ecdhe_str,
151 sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey));
152 write_ptr += sizeof (struct GNUNET_CRYPTO_EcdhePrivateKey);
153 GNUNET_STRINGS_string_to_data (aud_keystr,
156 sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
157 write_ptr += sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey);
158 GNUNET_memcpy (write_ptr, str, strlen (str) + 1); //with 0-Terminator
159 GNUNET_free (tmp_tok);
163 return GNUNET_SYSERR;
169 * Mapping of record type numbers to human-readable
176 { "ID_ATTR", GNUNET_GNSRECORD_TYPE_ID_ATTR },
177 { "ID_TOKEN", GNUNET_GNSRECORD_TYPE_ID_TOKEN },
178 { "ABE_KEY", GNUNET_GNSRECORD_TYPE_ABE_KEY },
179 { "ABE_MASTER", GNUNET_GNSRECORD_TYPE_ABE_MASTER },
180 { "ID_TOKEN_METADATA", GNUNET_GNSRECORD_TYPE_ID_TOKEN_METADATA },
186 * Convert a type name (i.e. "AAAA") to the corresponding number.
188 * @param cls closure, unused
189 * @param dns_typename name to convert
190 * @return corresponding number, UINT32_MAX on error
193 typename_to_number (void *cls,
194 const char *dns_typename)
199 while ( (NULL != name_map[i].name) &&
200 (0 != strcasecmp (dns_typename, name_map[i].name)) )
202 return name_map[i].number;
207 * Convert a type number (i.e. 1) to the corresponding type string (i.e. "A")
209 * @param cls closure, unused
210 * @param type number of a type to convert
211 * @return corresponding typestring, NULL on error
214 number_to_typename (void *cls,
220 while ( (NULL != name_map[i].name) &&
221 (type != name_map[i].number) )
223 return name_map[i].name;
228 * Entry point for the plugin.
231 * @return the exported block API
234 libgnunet_plugin_gnsrecord_identity_provider_init (void *cls)
236 struct GNUNET_GNSRECORD_PluginFunctions *api;
238 api = GNUNET_new (struct GNUNET_GNSRECORD_PluginFunctions);
239 api->value_to_string = &value_to_string;
240 api->string_to_value = &string_to_value;
241 api->typename_to_number = &typename_to_number;
242 api->number_to_typename = &number_to_typename;
248 * Exit point from the plugin.
250 * @param cls the return value from #libgnunet_plugin_block_test_init
254 libgnunet_plugin_gnsrecord_identity_provider_done (void *cls)
256 struct GNUNET_GNSRECORD_PluginFunctions *api = cls;
262 /* end of plugin_gnsrecord_dns.c */