72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/*
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This file is part of libcapwap.
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libcapwap is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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libcapwap is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include "conn.h"
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static int conn_q_recv_packet_(struct cw_Conn * conn, uint8_t * buffer,int len,int peek)
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{
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if ( !conn->cur_packet)
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{
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if ((conn->cur_packet = conn_q_get_packet(conn)) == 0){
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errno = EAGAIN;
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return -1;
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}
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conn->cur_packet_len = *((uint32_t*)conn->cur_packet);
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conn->cur_packet_pos=4;
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}
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if (conn->cur_packet_len > len )
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{
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memcpy(buffer,conn->cur_packet+conn->cur_packet_pos,len);
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if (peek)
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return len;
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conn->cur_packet_pos+=len;
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conn->cur_packet_len-=len;
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if (conn->cur_packet_len==0){
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free(conn->cur_packet);
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conn->cur_packet=0;
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}
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return len;
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}
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memcpy(buffer,conn->cur_packet+conn->cur_packet_pos,conn->cur_packet_len);
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if (peek)
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return conn->cur_packet_len;
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free (conn->cur_packet);
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conn->cur_packet=0;
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return conn->cur_packet_len;
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}
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int conn_q_recv_packet(struct cw_Conn * conn, uint8_t * buffer,int len)
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{
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return conn_q_recv_packet_(conn,buffer,len,0);
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}
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int conn_q_recv_packet_peek(struct cw_Conn * conn, uint8_t * buffer,int len)
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{
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return conn_q_recv_packet_(conn,buffer,len,1);
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}
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