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.
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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,
95 * Convert human-readable version of a 'value' of a record to the binary
98 * @param cls closure, unused
99 * @param type type of the record
100 * @param s human-readable string
101 * @param data set to value in binary encoding (will be allocated)
102 * @param data_size set to number of bytes in @a data
103 * @return #GNUNET_OK on success
106 conversation_string_to_value (void *cls,
116 return GNUNET_SYSERR;
120 case GNUNET_GNSRECORD_TYPE_PHONE:
122 struct GNUNET_CONVERSATION_PhoneRecord *pr;
125 struct GNUNET_PeerIdentity peer;
127 if ( (NULL == (dash = strchr (s, '-'))) ||
128 (1 != sscanf (s, "%103s-", line_port)) ||
130 GNUNET_CRYPTO_eddsa_public_key_from_string (dash + 1,
134 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
135 _("Unable to parse PHONE record `%s'\n"),
137 return GNUNET_SYSERR;
139 pr = GNUNET_new (struct GNUNET_CONVERSATION_PhoneRecord);
140 pr->version = htonl (1);
141 pr->reserved = htonl (0);
143 GNUNET_STRINGS_string_to_data (line_port,
146 sizeof (struct GNUNET_HashCode)))
148 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
149 _("Unable to parse PHONE record `%s'\n"),
152 return GNUNET_SYSERR;
156 *data_size = sizeof (struct GNUNET_CONVERSATION_PhoneRecord);
160 return GNUNET_SYSERR;
166 * Mapping of record type numbers to human-readable
173 { "PHONE", GNUNET_GNSRECORD_TYPE_PHONE },
179 * Convert a type name (i.e. "AAAA") to the corresponding number.
181 * @param cls closure, unused
182 * @param gns_typename name to convert
183 * @return corresponding number, UINT32_MAX on error
186 conversation_typename_to_number (void *cls,
187 const char *gns_typename)
193 while ( (name_map[i].name != NULL) &&
194 (0 != strcasecmp (gns_typename, name_map[i].name)) )
196 return name_map[i].number;
201 * Convert a type number (i.e. 1) to the corresponding type string (i.e. "A")
203 * @param cls closure, unused
204 * @param type number of a type to convert
205 * @return corresponding typestring, NULL on error
208 conversation_number_to_typename (void *cls,
215 while ( (name_map[i].name != NULL) &&
216 (type != name_map[i].number) )
218 return name_map[i].name;
223 * Entry point for the plugin.
226 * @return the exported block API
229 libgnunet_plugin_gnsrecord_conversation_init (void *cls)
231 struct GNUNET_GNSRECORD_PluginFunctions *api;
234 api = GNUNET_new (struct GNUNET_GNSRECORD_PluginFunctions);
235 api->value_to_string = &conversation_value_to_string;
236 api->string_to_value = &conversation_string_to_value;
237 api->typename_to_number = &conversation_typename_to_number;
238 api->number_to_typename = &conversation_number_to_typename;
244 * Exit point from the plugin.
246 * @param cls the return value from #libgnunet_plugin_block_test_init
250 libgnunet_plugin_gnsrecord_conversation_done (void *cls)
252 struct GNUNET_GNSRECORD_PluginFunctions *api = cls;
258 /* end of plugin_gnsrecord_conversation.c */