1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
#include <u.h>
#include <libc.h>
#include <authsrv.h>
static char *pbmsg = "AS protocol botch";
int
_asrdresp(int fd, char *buf, int len)
{
int n;
char error[64];
if(read(fd, buf, 1) != 1){
werrstr(pbmsg);
return -1;
}
n = len;
switch(buf[0]){
case AuthOK:
if(readn(fd, buf, len) != len){
werrstr(pbmsg);
return -1;
}
break;
case AuthErr:
if(readn(fd, error, sizeof error) != sizeof error){
werrstr(pbmsg);
return -1;
}
error[sizeof error-1] = '\0';
werrstr("remote: %s", error);
return -1;
case AuthOKvar:
if(readn(fd, error, 5) != 5){
werrstr(pbmsg);
return -1;
}
error[5] = 0;
n = atoi(error);
if(n <= 0 || n > len){
werrstr(pbmsg);
return -1;
}
memset(buf, 0, len);
if(readn(fd, buf, n) != n){
werrstr(pbmsg);
return -1;
}
break;
default:
werrstr(pbmsg);
return -1;
}
return n;
}
|
