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/* bootstrap_node_packets.c
*
* Special bootstrap node only packets.
*
* Include it in your bootstrap node and use: bootstrap_set_callbacks() to enable.
*
* Copyright (C) 2013 Tox project All Rights Reserved.
*
* This file is part of Tox.
*
* Tox is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Tox is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Tox. If not, see <http://www.gnu.org/licenses/>.
*
*/
#define MAX_MOTD_LENGTH 256 /* I recommend you use a maximum of 96 bytes. The hard maximum is this though. */
#define INFO_REQUEST_PACKET_LENGTH 78
static uint32_t bootstrap_version;
static uint8_t bootstrap_motd[MAX_MOTD_LENGTH];
static uint16_t bootstrap_motd_length;
/* To request this packet just send a packet of length INFO_REQUEST_PACKET_LENGTH
* with the first byte being BOOTSTRAP_INFO_PACKET_ID
*/
static int handle_info_request(void *object, IP_Port source, const uint8_t *packet, uint32_t length)
{
if (length != INFO_REQUEST_PACKET_LENGTH)
return 1;
uint8_t data[1 + sizeof(bootstrap_version) + MAX_MOTD_LENGTH];
data[0] = BOOTSTRAP_INFO_PACKET_ID;
memcpy(data + 1, &bootstrap_version, sizeof(bootstrap_version));
uint16_t len = 1 + sizeof(bootstrap_version) + bootstrap_motd_length;
memcpy(data + 1 + sizeof(bootstrap_version), bootstrap_motd, bootstrap_motd_length);
if (sendpacket(object, source, data, len) == len)
return 0;
return 1;
}
int bootstrap_set_callbacks(Networking_Core *net, uint32_t version, uint8_t *motd, uint16_t motd_length)
{
if (motd_length > MAX_MOTD_LENGTH)
return -1;
bootstrap_version = htonl(version);
memcpy(bootstrap_motd, motd, motd_length);
bootstrap_motd_length = motd_length;
networking_registerhandler(net, BOOTSTRAP_INFO_PACKET_ID, &handle_info_request, net);
return 0;
}
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