2 This file is part of GNUnet
3 Copyright (C) 2013 GNUnet e.V.
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.
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.
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/>.
18 SPDX-License-Identifier: AGPL3.0-or-later
22 * @file conversation/plugin_gnsrecord_conversation.c
23 * @brief gnsrecord plugin to provide the API for fundamental GNS records
24 * This includes the VPN record because GNS resolution
25 * is expected to understand VPN records and (if needed)
26 * map the result to A/AAAA.
27 * @author Christian Grothoff
31 #include "gnunet_util_lib.h"
32 #include "gnunet_gnsrecord_lib.h"
33 #include "gnunet_conversation_service.h"
34 #include "gnunet_gnsrecord_plugin.h"
38 * Convert the 'value' of a record to a string.
40 * @param cls closure, unused
41 * @param type type of the record
42 * @param data value in binary encoding
43 * @param data_size number of bytes in @a data
44 * @return NULL on error, otherwise human-readable representation of the value
47 conversation_value_to_string (void *cls,
57 case GNUNET_GNSRECORD_TYPE_PHONE:
59 const struct GNUNET_CONVERSATION_PhoneRecord *pr;
63 if (data_size != sizeof(struct GNUNET_CONVERSATION_PhoneRecord))
69 if (1 != ntohl (pr->version))
71 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
72 _ ("PHONE version %u not supported\n"),
76 pkey = GNUNET_CRYPTO_eddsa_public_key_to_string (&pr->peer.public_key);
77 s = GNUNET_STRINGS_data_to_string_alloc (&pr->line_port,
78 sizeof(struct GNUNET_HashCode));
80 GNUNET_asprintf (&ret,
96 * Convert human-readable version of a 'value' of a record to the binary
99 * @param cls closure, unused
100 * @param type type of the record
101 * @param s human-readable string
102 * @param data set to value in binary encoding (will be allocated)
103 * @param data_size set to number of bytes in @a data
104 * @return #GNUNET_OK on success
107 conversation_string_to_value (void *cls,
117 return GNUNET_SYSERR;
121 case GNUNET_GNSRECORD_TYPE_PHONE:
123 struct GNUNET_CONVERSATION_PhoneRecord *pr;
126 struct GNUNET_PeerIdentity peer;
128 if ((NULL == (dash = strchr (s, '-'))) ||
129 (1 != sscanf (s, "%103s-", line_port)) ||
131 GNUNET_CRYPTO_eddsa_public_key_from_string (dash + 1,
135 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
136 _ ("Unable to parse PHONE record `%s'\n"),
138 return GNUNET_SYSERR;
140 pr = GNUNET_new (struct GNUNET_CONVERSATION_PhoneRecord);
141 pr->version = htonl (1);
142 pr->reserved = htonl (0);
144 GNUNET_STRINGS_string_to_data (line_port,
147 sizeof(struct GNUNET_HashCode)))
149 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
150 _ ("Unable to parse PHONE record `%s'\n"),
153 return GNUNET_SYSERR;
157 *data_size = sizeof(struct GNUNET_CONVERSATION_PhoneRecord);
162 return GNUNET_SYSERR;
168 * Mapping of record type numbers to human-readable
176 { "PHONE", GNUNET_GNSRECORD_TYPE_PHONE },
182 * Convert a type name (i.e. "AAAA") to the corresponding number.
184 * @param cls closure, unused
185 * @param gns_typename name to convert
186 * @return corresponding number, UINT32_MAX on error
189 conversation_typename_to_number (void *cls,
190 const char *gns_typename)
196 while ((name_map[i].name != NULL) &&
197 (0 != strcasecmp (gns_typename, name_map[i].name)))
199 return name_map[i].number;
204 * Convert a type number (i.e. 1) to the corresponding type string (i.e. "A")
206 * @param cls closure, unused
207 * @param type number of a type to convert
208 * @return corresponding typestring, NULL on error
211 conversation_number_to_typename (void *cls,
218 while ((name_map[i].name != NULL) &&
219 (type != name_map[i].number))
221 return name_map[i].name;
226 * Entry point for the plugin.
229 * @return the exported block API
232 libgnunet_plugin_gnsrecord_conversation_init (void *cls)
234 struct GNUNET_GNSRECORD_PluginFunctions *api;
237 api = GNUNET_new (struct GNUNET_GNSRECORD_PluginFunctions);
238 api->value_to_string = &conversation_value_to_string;
239 api->string_to_value = &conversation_string_to_value;
240 api->typename_to_number = &conversation_typename_to_number;
241 api->number_to_typename = &conversation_number_to_typename;
247 * Exit point from the plugin.
249 * @param cls the return value from #libgnunet_plugin_block_test_init
253 libgnunet_plugin_gnsrecord_conversation_done (void *cls)
255 struct GNUNET_GNSRECORD_PluginFunctions *api = cls;
262 /* end of plugin_gnsrecord_conversation.c */