actube/src/capwap/conn_prepare_image_data_request.c

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/*
This file is part of libcapwap.
libcapwap 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.
libcapwap 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#include "capwap.h"
#include "lwapp.h"
int conn_prepare_image_data_request(struct conn *conn, struct cwimage_data *data,
struct image_identifier *id)
{
struct cwmsg *cwmsg = &conn->req_msg;
cwmsg_init(cwmsg, conn->req_buffer, CW_MSG_IMAGE_DATA_REQUEST, conn_get_next_seqnum(conn),
0);
if (!data)
return 0;
/* for Cisco APs send image data in "LWAPP format" */
if (conn->capwap_mode == CWMODE_CISCO) {
uint8_t type = 3;
uint16_t checksum = htons(lw_checksum(data->data, data->len));
cwmsg_vaddelem(cwmsg, CW_ELEM_IMAGE_DATA,
&type, 1,
&checksum, 2,
data->data, data->len,
NULL);
return 0;
}
/* standard capwap operation */
cwmsg_vaddelem(cwmsg,CW_ELEM_IMAGE_DATA,
&data->type, sizeof(data->type),
data->data, data->len,
NULL
);
return 0;
}