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/**
\file obex_connect.c
Parse and create connect-command.
OpenOBEX library - Free implementation of the Object Exchange protocol.
Copyright (c) 2000 Pontus Fuchs, All Rights Reserved.
Copyright (c) 1999 Dag Brattli, All Rights Reserved.
OpenOBEX is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of
the License, or (at your option) any later version.
This program 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with OpenOBEX. If not, see <http://www.gnu.org/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "obex_main.h"
#include "obex_object.h"
#include "databuffer.h"
#include "obex_connect.h"
#include <stdio.h>
#include <string.h>
/* Connect header */
#pragma pack(1)
struct obex_connect_hdr {
uint8_t version;
uint8_t flags;
uint16_t mtu;
};
#pragma pack()
/** Add the data needed to send/reply to a CONNECT request */
int obex_insert_connectframe(obex_t *self, obex_object_t *object)
{
struct databuffer *buf = object->tx_nonhdr_data;
struct obex_connect_hdr *hdr;
DEBUG(4, "\n");
if (!buf) {
buf = object->tx_nonhdr_data = membuf_create(sizeof(*hdr));
if (!buf)
return -1;
} else
buf_clear(buf, buf_get_length(buf));
buf_append(buf, NULL, sizeof(*hdr));
hdr = buf_get(buf);
hdr->version = OBEX_VERSION;
hdr->flags = 0x00; /* Flags */
hdr->mtu = htons(self->mtu_rx); /* Max packet size */
return 0;
}
/** Parse the non-header data of a CONNECT request/response */
int obex_parse_connectframe(obex_t *self, obex_object_t *object)
{
struct databuffer *buf = object->rx_nonhdr_data;
struct obex_connect_hdr *conn_hdr = buf_get(buf);
uint16_t mtu = ntohs(conn_hdr->mtu);
DEBUG(1, "version=%02x\n", conn_hdr->version);
/* Limit to some reasonable value (usually OBEX_DEFAULT_MTU) */
if (mtu < self->mtu_tx_max)
self->mtu_tx = mtu;
else
self->mtu_tx = self->mtu_tx_max;
DEBUG(1, "requested MTU=%u, used MTU=%u\n", mtu, self->mtu_tx);
return 1;
}
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