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;
59 size_t total_len = rd_count * sizeof (struct GNUNET_NAMESTORE_NetworkRecord);
60 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Struct size: %u\n", total_len);
62 /* figure out total len required */
63 for (c = 0; c < rd_count; c ++)
65 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Data size record[%i] : %u\n", c, rd[c].data_size);
66 total_len += rd[c].data_size;
69 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Serializing %i records with total length of %llu\n", rd_count, total_len);
71 (*dest) = GNUNET_malloc (total_len);
77 for (c = 0; c < rd_count; c ++)
79 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Serialized record [%i]: data_size %i\n", c,rd[c].data_size);
81 nr = (struct GNUNET_NAMESTORE_NetworkRecord *) &d[offset];
82 nr->data_size = htonl (rd[c].data_size);
83 nr->flags = htonl (rd[c].flags);
84 nr->record_type = htonl (rd[c].record_type);
85 nr->expiration = GNUNET_TIME_absolute_hton(rd[c].expiration);
88 offset += sizeof (struct GNUNET_NAMESTORE_NetworkRecord);
89 memcpy (&d[offset], rd[c].data, rd[c].data_size);
90 offset += rd[c].data_size;
93 GNUNET_assert (offset == total_len);
99 * Deserialize an array of GNUNET_NAMESTORE_RecordData *rd after transmission
102 * @param source where to read the data to deserialize
103 * @param rd_count number of elements in array
106 * @return number of elements deserialized
109 GNUNET_NAMESTORE_records_deserialize ( struct GNUNET_NAMESTORE_RecordData **dest, char *src, size_t len)
111 struct GNUNET_NAMESTORE_NetworkRecord * nr;
112 struct GNUNET_NAMESTORE_RecordData *d = (*dest);
122 nr = (struct GNUNET_NAMESTORE_NetworkRecord *) &src[offset];
123 offset += sizeof (struct GNUNET_NAMESTORE_NetworkRecord);
125 data_size = ntohl (nr->data_size);
126 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Datasize record[%i]: %u\n", elements, data_size);
131 GNUNET_assert (len == offset);
132 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deserializing %i records with total length of %u\n", elements, len);
134 (*dest) = GNUNET_malloc (elements * sizeof (struct GNUNET_NAMESTORE_RecordData));
138 for (c = 0; c < elements; c++)
140 nr = (struct GNUNET_NAMESTORE_NetworkRecord *) &src[offset];
141 d[c].expiration = GNUNET_TIME_absolute_ntoh(nr->expiration);
142 d[c].record_type = ntohl (nr->record_type);
143 d[c].flags = ntohl (nr->flags);
144 d[c].data_size = ntohl (nr->data_size);
145 d[c].data = GNUNET_malloc (d[c].data_size);
146 GNUNET_assert (d[c].data != NULL);
148 offset += sizeof (struct GNUNET_NAMESTORE_NetworkRecord);
149 memcpy((char *) d[c].data, &src[offset], d[c].data_size);
151 offset += d[c].data_size;
152 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deserialized record[%i] /w data_size %i\n", c, d[c].data_size);
154 GNUNET_assert(offset == len);
159 /* end of namestore_api.c */