You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.1 KiB
54 lines
1.1 KiB
#include <string.h>
|
|
#include "slip_common.h"
|
|
#include "net_user.h"
|
|
|
|
int slip_proto_read(int fd, void *buf, int len, struct slip_proto *slip)
|
|
{
|
|
int i, n, size, start;
|
|
|
|
if(slip->more > 0){
|
|
i = 0;
|
|
while(i < slip->more){
|
|
size = slip_unesc(slip->ibuf[i++], slip->ibuf,
|
|
&slip->pos, &slip->esc);
|
|
if(size){
|
|
memcpy(buf, slip->ibuf, size);
|
|
memmove(slip->ibuf, &slip->ibuf[i],
|
|
slip->more - i);
|
|
slip->more = slip->more - i;
|
|
return size;
|
|
}
|
|
}
|
|
slip->more = 0;
|
|
}
|
|
|
|
n = net_read(fd, &slip->ibuf[slip->pos],
|
|
sizeof(slip->ibuf) - slip->pos);
|
|
if(n <= 0)
|
|
return n;
|
|
|
|
start = slip->pos;
|
|
for(i = 0; i < n; i++){
|
|
size = slip_unesc(slip->ibuf[start + i], slip->ibuf,&slip->pos,
|
|
&slip->esc);
|
|
if(size){
|
|
memcpy(buf, slip->ibuf, size);
|
|
memmove(slip->ibuf, &slip->ibuf[start+i+1],
|
|
n - (i + 1));
|
|
slip->more = n - (i + 1);
|
|
return size;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int slip_proto_write(int fd, void *buf, int len, struct slip_proto *slip)
|
|
{
|
|
int actual, n;
|
|
|
|
actual = slip_esc(buf, slip->obuf, len);
|
|
n = net_write(fd, slip->obuf, actual);
|
|
if(n < 0)
|
|
return n;
|
|
else return len;
|
|
}
|
|
|