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/* ISC license. */
#include <signal.h>
#include <unistd.h>
#include <tls.h>
#include <skalibs/alarm.h>
#include <skalibs/strerr2.h>
#include "stls-internal.h"
#define diectx(e, ctx, s) strerr_diefu3x(e, (s), ": ", tls_error(ctx))
static void alrm_handler (int sig)
{
strerr_dief1x(98, "handshake timed out") ;
}
void stls_handshake (struct tls *ctx, tain_t const *tto)
{
struct sigaction saold ;
struct sigaction sanew = { .sa_handler = &alrm_handler, .sa_flags = SA_RESTART, .sa_sigaction = 0 } ;
sigfillset(&sanew.sa_mask) ;
if (sigaction(SIGALRM, &sanew, &saold) < 0) strerr_diefu1sys(111, "sigaction") ;
if (!alarm_timeout(tto)) strerr_diefu1sys(111, "set an alarm") ;
if (tls_handshake(ctx) < 0) diectx(97, ctx, "tls_handshake") ;
alarm_disable() ;
sigaction(SIGALRM, &saold, 0) ;
}
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