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/* ISC license. */
#include <skalibs/sysdeps.h>
#ifdef SKALIBS_HASSPLICE
#include <skalibs/nonposix.h>
#include <errno.h>
#include <fcntl.h>
#include <stdint.h>
#include <unistd.h>
#include <skalibs/allreadwrite.h>
#include <skalibs/strerr.h>
#include <skalibs/tai.h>
#include <skalibs/djbunix.h>
#include <skalibs/unix-timed.h>
#include "tipideed-internal.h"
struct fixed_info_s
{
int fd ;
size_t n ;
} ;
static int fixed_getfd (void *b)
{
struct fixed_info_s *si = b ;
return si->fd ;
}
static ssize_t fixed_get (void *b)
{
struct fixed_info_s *si = b ;
while (si->n)
{
ssize_t r = sanitize_read(splice(si->fd, 0, 1, 0, si->n, SPLICE_F_NONBLOCK)) ;
if (r == -1) break ;
if (!r) return 0 ;
si->n -= r ;
}
return si->n ? -1 : 1 ;
}
void stream_fixed (int fd, size_t n, char const *fn)
{
tain deadline ;
struct fixed_info_s si = { .fd = fd, .n = n } ;
tain_add_g(&deadline, tain_less(&g.writetto, &g.cgitto) ? &g.cgitto : &g.writetto) ;
if (timed_get_g(&si, &fixed_getfd, &fixed_get, &deadline) < 0)
strerr_diefu3sys(111, "splice from ", fn, " to stdout") ;
}
void stream_infinite (int fd, char const *fn)
{
ssize_t r ;
/* only works when fd is a pipe, which is the case for cgi; fcgi/scgi will need refactoring */
/* XXX: ignores timeouts, but this is just TOO GOOD to pass up */
/* no really, it is just optimal in 99.9% of cases, it is WORTH IT */
while ((r = splice(fd, 0, 1, 0, 65536, SPLICE_F_MORE)) > 0) ;
/* You WISH you had written that line of code */
if (r == -1) strerr_diefu3sys(111, "splice from ", fn, " to stdout") ;
}
#else
#include <sys/uio.h>
#include <unistd.h>
#include <stdint.h>
#include <skalibs/uint64.h>
#include <skalibs/allreadwrite.h>
#include <skalibs/buffer.h>
#include <skalibs/strerr.h>
#include <skalibs/tai.h>
#include <skalibs/unix-timed.h>
#include "tipideed-internal.h"
void stream_fixed (int fd, size_t n, char const *fn)
{
tain deadline ;
struct iovec v[2] ;
size_t r ;
if (!n) goto flushit ;
fillit:
buffer_wpeek(buffer_1, v) ;
siovec_trunc(v, 2, n) ;
tain_add_g(&deadline, &g.cgitto) ;
r = timed_readv_g(fd, v, 2, &deadline) ;
if (r == -1) strerr_diefu2sys(111, "read from resource ", fn) ;
if (!r) strerr_dief3x(111, "resource ", fn, " provided less content than advertised in Content-Length") ;
buffer_wseek(buffer_1, r) ;
n -= r ;
flushit:
tain_add_g(&deadline, &g.writetto) ;
if (!buffer_timed_flush_g(buffer_1, &deadline))
strerr_diefu1sys(111, "write to stdout") ;
if (n) goto fillit ;
}
void stream_infinite (int fd, char const *fn)
{
tain deadline ;
struct iovec v[2] ;
size_t r ;
for (;;)
{
buffer_wpeek(buffer_1, v) ;
tain_add_g(&deadline, &g.cgitto) ;
r = timed_readv_g(fd, v, 2, &deadline) ;
if (r == -1) strerr_diefu2sys(111, "read from resource ", fn) ;
if (!r) break ;
tain_add_g(&deadline, &g.writetto) ;
if (!buffer_timed_flush_g(buffer_1, &deadline))
strerr_diefu1sys(111, "write to stdout") ;
}
}
#endif
#include <skalibs/buffer.h>
void stream_autochunk (buffer *b, char const *fn)
{
}
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