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7u83@mail.ru 2015-04-05 17:40:01 +00:00
parent 7cb5a8938e
commit ad25251444
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src/capwap/cw_put_msg.c Normal file
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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/>.
*/
/**
* @file
* @brief implementation of cw_put_msg.
*/
#include "capwap.h"
#include "capwap_items.h"
#include "conn.h"
struct args{
struct conn * conn;
uint32_t msg_id;
uint8_t * dst;
int len;
};
static int action_cb(void *args_param, void *a_param)
{
struct cw_action_out * a = (struct cw_action_out *)a_param;
struct args * args = (struct args *)args_param;
//printf("ACTION_CB: %d %d %d\n",a->msg_id, a->vendor_id, a->item_id);
if (a->msg_id != args->msg_id) {
/* Element is from next msg, close action */
return 0;
}
if (a->item_id == CW_ITEM_NONE) {
/* Start of message */
return 1;
}
int l = 0;
uint8_t *dst = args->dst + args->len;
if (a->out) {
l = a->out(args->conn, a, dst);
}
args->len += l;
return 1;
}
/**
* Put a message to a buffer
* This functions assumes, that a message header with is
* alread initilaized in buffer
* Message alements are taken fom actiondef in #conn->action
*/
int cw_put_msg(struct conn *conn, uint8_t * rawout)
{
/* rawout is already initialized, so we can get
msg type from buffer */
uint8_t *msgptr = rawout + cw_get_hdr_msg_offset(rawout);
/* create search paramaters */
cw_action_out_t as;
as.msg_id = cw_get_msg_type(msgptr);
as.item_id = CW_ITEM_NONE;
as.vendor_id = 0;
/* setup arguments for callback function */
struct args args;
args.conn = conn;
args.msg_id = as.msg_id;
args.dst = msgptr+8;
args.len=0;
avltree_foreach_from_asc(conn->actions->out, &as, action_cb, &args);
cw_set_msg_elems_len(msgptr, args.len);
/*
printf ("Total elems len = %d\n",args.len);
printf("Total msg len = %d\n",cw_get_hdr_msg_total_len(rawout));
*/
return args.len;
}