actube/src/capwap/cwmsg_send.c
7u83@mail.ru 4f7def25f2 Work in progrsss.
FossilOrigin-Name: efb7fb1dc204a4d673f899994eb72005a6cdead3dff43ecab63f1ed4ca8e61ba
2014-09-14 20:46:14 +00:00

94 lines
2.1 KiB
C

/*
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 "cwmsg.h"
int mtu = 564;
int __old_cwmsg_send(struct cwmsg * cwmsg, int seqnum, int rid, struct conn * conn)
{
uint32_t val;
/* second dword of message control header */
//orig val = (seqnum<<24)|((cwmsg->pos+3)<<8);
val = (seqnum<<24)|((cwmsg->pos)<<8);
*((uint32_t*)(cwmsg->ctrlhdr+4))=htonl(val);
// int msglen = cwmsg->ctrlhdr-cwmsg->buffer+cwmsg->pos;
int msglen = cwmsg->pos+8;
uint8_t * ptr = cwmsg->buffer;
int fragoffset = 0;
int hlen = cwmsg->hlen*4;
int preamble = CW_VERSION | 0;
int wbid=CWTH_WBID_IEEE80211;
int packetlen = msglen+hlen;
while (packetlen>mtu){
val = (preamble << 24) | ((hlen/4)<<19) | (rid<<14) |(wbid<<9) |
/*CWTH_FLAGS_T | */
CWTH_FLAGS_F |
cwmsg->flags;
*((uint32_t*)ptr)=htonl(val);
val = conn->fragid<<16 | fragoffset<<3;
*((uint32_t*)(ptr+8))=htonl(val);
// printf("Offset = %d\n",fragoffset);
conn_send_packet(conn,ptr,mtu);
ptr +=mtu-hlen;
fragoffset+=(mtu-hlen)/8;
packetlen-=mtu-hlen;
// printf("Packelen=%d\n",packetlen);
}
val = (preamble << 24) | ((hlen/4)<<19) | (rid<<14) |(wbid<<9) |
/*CWTH_FLAGS_T|*/ cwmsg->flags;
if (fragoffset)
val |= CWTH_FLAGS_F | CWTH_FLAGS_L;
// printf("Setting first byte %08X\n",val);
*((uint32_t*)ptr)=htonl(val);
val = conn->fragid<<16 | fragoffset<<3;
*((uint32_t*)(ptr+4))=htonl(val);
return conn_send_packet(conn,cwmsg->buffer,msglen-fragoffset*8+hlen);
}