2 This file is part of GNUnet.
3 (C) 2009, 2010 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 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 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file namestore/namestore_common.c
23 * @brief API to access the NAMESTORE service
24 * @author Martin Schanzenbach
25 * @author Matthias Wachs
29 #include "gnunet_util_lib.h"
30 #include "gnunet_constants.h"
31 #include "gnunet_arm_service.h"
32 #include "gnunet_namestore_service.h"
33 #include "namestore.h"
34 #define DEBUG_GNS_API GNUNET_EXTRA_LOGGING
36 #define LOG(kind,...) GNUNET_log_from (kind, "gns-api",__VA_ARGS__)
38 * Serialize an array of GNUNET_NAMESTORE_RecordData *rd to transmit over the
41 * @param dest where to write the serialized data
42 * @param rd_count number of elements in array
45 * @return number of bytes written to destination dest
48 GNUNET_NAMESTORE_records_serialize (char ** dest,
49 unsigned int rd_count,
50 const struct GNUNET_NAMESTORE_RecordData *rd)
53 struct GNUNET_NAMESTORE_NetworkRecord * nr;
58 GNUNET_assert (rd != NULL);
60 size_t total_len = rd_count * sizeof (struct GNUNET_NAMESTORE_NetworkRecord);
61 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Struct size: %u\n", total_len);
63 /* figure out total len required */
64 for (c = 0; c < rd_count; c ++)
66 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Data size record[%i] : %u\n", c, rd[c].data_size);
67 total_len += rd[c].data_size;
70 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Serializing %i records with total length of %llu\n", rd_count, total_len);
72 (*dest) = GNUNET_malloc (total_len);
78 for (c = 0; c < rd_count; c ++)
80 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Serialized record [%i]: data_size %i\n", c,rd[c].data_size);
82 nr = (struct GNUNET_NAMESTORE_NetworkRecord *) &d[offset];
83 nr->data_size = htonl (rd[c].data_size);
84 nr->flags = htonl (rd[c].flags);
85 nr->record_type = htonl (rd[c].record_type);
86 nr->expiration = GNUNET_TIME_absolute_hton(rd[c].expiration);
89 offset += sizeof (struct GNUNET_NAMESTORE_NetworkRecord);
90 memcpy (&d[offset], rd[c].data, rd[c].data_size);
91 offset += rd[c].data_size;
94 GNUNET_assert (offset == total_len);
99 GNUNET_NAMESTORE_records_free (unsigned int rd_count, struct GNUNET_NAMESTORE_RecordData *rd)
102 if ((rd == NULL) || (rd_count == 0))
105 for (c = 0; c < rd_count; c++)
106 GNUNET_free_non_null ((void *) rd[c].data);
112 * Deserialize an array of GNUNET_NAMESTORE_RecordData *rd after transmission
115 * @param source where to read the data to deserialize
116 * @param rd_count number of elements in array
119 * @return number of elements deserialized
122 GNUNET_NAMESTORE_records_deserialize ( struct GNUNET_NAMESTORE_RecordData **dest, char *src, size_t len)
124 struct GNUNET_NAMESTORE_NetworkRecord * nr;
125 struct GNUNET_NAMESTORE_RecordData *d = (*dest);
135 nr = (struct GNUNET_NAMESTORE_NetworkRecord *) &src[offset];
136 offset += sizeof (struct GNUNET_NAMESTORE_NetworkRecord);
138 data_size = ntohl (nr->data_size);
139 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Datasize record[%i]: %u\n", elements, data_size);
144 GNUNET_assert (len == offset);
145 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deserializing %i records with total length of %u\n", elements, len);
147 (*dest) = GNUNET_malloc (elements * sizeof (struct GNUNET_NAMESTORE_RecordData));
151 for (c = 0; c < elements; c++)
153 nr = (struct GNUNET_NAMESTORE_NetworkRecord *) &src[offset];
154 d[c].expiration = GNUNET_TIME_absolute_ntoh(nr->expiration);
155 d[c].record_type = ntohl (nr->record_type);
156 d[c].flags = ntohl (nr->flags);
157 d[c].data_size = ntohl (nr->data_size);
158 if (d[c].data_size > 0)
159 d[c].data = GNUNET_malloc (d[c].data_size);
163 offset += sizeof (struct GNUNET_NAMESTORE_NetworkRecord);
164 memcpy((char *) d[c].data, &src[offset], d[c].data_size);
166 offset += d[c].data_size;
167 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deserialized record[%i] /w data_size %i\n", c, d[c].data_size);
169 GNUNET_assert(offset == len);
174 /* end of namestore_api.c */