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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/* ISC license. */
#include <errno.h>
#include <skalibs/uint16.h>
#include <skalibs/uint.h>
#include <skalibs/sgetopt.h>
#include <skalibs/strerr2.h>
#include <skalibs/buffer.h>
#include <skalibs/tai.h>
#include <skalibs/djbunix.h>
#include <skalibs/ip46.h>
#include <skalibs/unix-timed.h>
#include <s6-networking/ident.h>
#define USAGE "s6-ident-client [ -t timeout ] ra rp la lp"
#define dieusage() strerr_dieusage(100, USAGE)
int main (int argc, char const *const *argv)
{
tain_t deadline ;
ip46_t ra, la ;
uint16 rp, lp ;
PROG = "s6-ident-client" ;
{
unsigned int t = 0 ;
subgetopt_t l = SUBGETOPT_ZERO ;
for (;;)
{
register int opt = subgetopt_r(argc, argv, "t:", &l) ;
if (opt == -1) break ;
switch (opt)
{
case 't' : if (!uint0_scan(l.arg, &t)) dieusage() ; break ;
default : dieusage() ;
}
}
argc -= l.ind ; argv += l.ind ;
if (t) tain_from_millisecs(&deadline, t) ; else deadline = tain_infinite_relative ;
}
if (argc < 4) dieusage() ;
if (!ip46_scan(argv[0], &ra))
strerr_dief2x(100, "invalid IP address: ", argv[0]) ;
if (!uint160_scan(argv[1], &rp))
strerr_dief2x(100, "invalid port number: ", argv[1]) ;
if (!ip46_scan(argv[2], &la))
strerr_dief2x(100, "invalid IP address: ", argv[2]) ;
if (!uint160_scan(argv[3], &lp))
strerr_dief2x(100, "invalid port number: ", argv[3]) ;
if (ip46_is6(&ra) != ip46_is6(&la))
strerr_dief1x(100, "address family mismatch") ;
tain_now_g() ;
tain_add_g(&deadline, &deadline) ;
{
char buf[BUFFER_OUTSIZE_SMALL] ;
register int r = s6net_ident_client_g(buf, BUFFER_OUTSIZE_SMALL, &ra, rp, &la, lp, &deadline) ;
if (r < 0) strerr_diefu1sys(errno == ETIMEDOUT ? 99 : 111, "s6net_ident_client") ;
else if (!r)
{
strerr_warnw2x("ident server replied: ", s6net_ident_error_str(errno)) ;
return 1 ;
}
buffer_putnoflush(buffer_1small, buf, r-1) ;
}
buffer_putnoflush(buffer_1small, "\n", 1) ;
if (!buffer_timed_flush_g(buffer_1small, &deadline))
strerr_diefu1sys(111, "write to stdout") ;
return 0 ;
}
|
