1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
/* ISC license. */
#include <string.h>
#include <errno.h>
#include <s6-networking/ident.h>
ssize_t s6net_ident_client (char *s, size_t max, ip46_t const *remoteip, uint16_t remoteport, ip46_t const *localip, uint16_t localport, tain_t const *deadline, tain_t *stamp)
{
char buf[S6NET_IDENT_REPLY_SIZE] ;
size_t len ;
ssize_t r = s6net_ident_reply_get(buf, remoteip, remoteport, localip, localport, deadline, stamp) ;
if (r < 0) return errno == EPIPE ? (errno = EIO, 0) : -1 ; /* the RFC says so */
len = r ;
r = s6net_ident_reply_parse(buf, remoteport, localport) ;
if (r <= 0) return r ;
if (max + r < len + 1) return (errno = ENAMETOOLONG, -1) ;
memcpy(s, buf + r, len - r + 1) ;
return len - r + 1 ;
}
|
