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
|
/* ISC license. */
#include <sys/uio.h>
#include <string.h>
#include <errno.h>
#include <skalibs/allreadwrite.h>
#include <skalibs/error.h>
#include <skalibs/djbunix.h>
#include <skalibs/unix-timed.h>
#include <skalibs/ancil.h>
#include <skalibs/textmessage.h>
#include <skalibs/posixishard.h>
static int getfd (void *p)
{
return ((int *)p)[0] ;
}
static ssize_t get (void *p)
{
int *fd = p ;
int r = ancil_recv_fd(fd[0], '|') ;
if (r < 0) return error_isagain(errno) ? (errno = 0, 0) : r ;
fd[1] = r ;
return 1 ;
}
int textmessage_recv_channel (int sock, textmessage_receiver *asyncin, char *asyncbuf, size_t asyncbufsize, char const *after, size_t afterlen, tain const *deadline, tain *stamp)
{
struct iovec v ;
int fd[2] = { sock, -1 } ;
ssize_t r = timed_get(fd, &getfd, &get, deadline, stamp) ;
if (!r) errno = EPIPE ;
if (r <= 0) return 0 ;
textmessage_receiver_init(asyncin, fd[1], asyncbuf, asyncbufsize, TEXTMESSAGE_MAXLEN) ;
if (sanitize_read(textmessage_timed_receive(asyncin, &v, deadline, stamp)) <= 0) goto serr ;
if (v.iov_len != afterlen || memcmp(v.iov_base, after, afterlen)) goto berr ;
return 1 ;
berr:
errno = EPROTO ;
serr:
textmessage_receiver_free(asyncin) ;
fd_close(fd[1]) ;
return 0 ;
}
|
