Commit | Line | Data |
---|---|---|
a3c77c67 JD |
1 | #include <string.h> |
2 | #include "slip_common.h" | |
37185b33 | 3 | #include <net_user.h> |
a3c77c67 JD |
4 | |
5 | int slip_proto_read(int fd, void *buf, int len, struct slip_proto *slip) | |
6 | { | |
7 | int i, n, size, start; | |
8 | ||
9 | if(slip->more > 0){ | |
10 | i = 0; | |
11 | while(i < slip->more){ | |
12 | size = slip_unesc(slip->ibuf[i++], slip->ibuf, | |
13 | &slip->pos, &slip->esc); | |
14 | if(size){ | |
15 | memcpy(buf, slip->ibuf, size); | |
16 | memmove(slip->ibuf, &slip->ibuf[i], | |
17 | slip->more - i); | |
18 | slip->more = slip->more - i; | |
19 | return size; | |
20 | } | |
21 | } | |
22 | slip->more = 0; | |
23 | } | |
24 | ||
25 | n = net_read(fd, &slip->ibuf[slip->pos], | |
26 | sizeof(slip->ibuf) - slip->pos); | |
27 | if(n <= 0) | |
28 | return n; | |
29 | ||
30 | start = slip->pos; | |
31 | for(i = 0; i < n; i++){ | |
32 | size = slip_unesc(slip->ibuf[start + i], slip->ibuf,&slip->pos, | |
33 | &slip->esc); | |
34 | if(size){ | |
35 | memcpy(buf, slip->ibuf, size); | |
36 | memmove(slip->ibuf, &slip->ibuf[start+i+1], | |
37 | n - (i + 1)); | |
38 | slip->more = n - (i + 1); | |
39 | return size; | |
40 | } | |
41 | } | |
42 | return 0; | |
43 | } | |
44 | ||
45 | int slip_proto_write(int fd, void *buf, int len, struct slip_proto *slip) | |
46 | { | |
47 | int actual, n; | |
48 | ||
49 | actual = slip_esc(buf, slip->obuf, len); | |
50 | n = net_write(fd, slip->obuf, actual); | |
51 | if(n < 0) | |
52 | return n; | |
53 | else return len; | |
54 | } |