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#include "select.h"
#include "error.h"
#include "ndelay.h"
#include "now.h"
#include "ssl_timeoutio.h"
int ssl_timeoutio(int (*fun)(),
int t, int rfd, int wfd, SSL *ssl, char *buf, int len)
{
int n;
const datetime_sec end = (datetime_sec)t + now();
do {
fd_set fds;
struct timeval tv;
const int r = buf ? fun(ssl, buf, len) : fun(ssl);
if (r > 0) return r;
t = end - now();
if (t < 0) break;
tv.tv_sec = (time_t)t; tv.tv_usec = 0;
FD_ZERO(&fds);
switch (SSL_get_error(ssl, r))
{
default: return r; /* some other error */
case SSL_ERROR_WANT_READ:
FD_SET(rfd, &fds); n = select(rfd + 1, &fds, NULL, NULL, &tv);
break;
case SSL_ERROR_WANT_WRITE:
FD_SET(wfd, &fds); n = select(wfd + 1, NULL, &fds, NULL, &tv);
break;
}
/* n is the number of descriptors that changed status */
} while (n > 0);
if (n != -1) errno = error_timeout;
return -1;
}
int ssl_timeoutaccept(int t, int rfd, int wfd, SSL *ssl)
{
int r;
/* if connection is established, keep NDELAY */
if (ndelay_on(rfd) == -1 || ndelay_on(wfd) == -1) return -1;
r = ssl_timeoutio(SSL_accept, t, rfd, wfd, ssl, NULL, 0);
if (r <= 0) { ndelay_off(rfd); ndelay_off(wfd); }
else SSL_set_mode(ssl, SSL_MODE_ENABLE_PARTIAL_WRITE);
return r;
}
int ssl_timeoutconn(int t, int rfd, int wfd, SSL *ssl)
{
int r;
/* if connection is established, keep NDELAY */
if (ndelay_on(rfd) == -1 || ndelay_on(wfd) == -1) return -1;
r = ssl_timeoutio(SSL_connect, t, rfd, wfd, ssl, NULL, 0);
if (r <= 0) { ndelay_off(rfd); ndelay_off(wfd); }
else SSL_set_mode(ssl, SSL_MODE_ENABLE_PARTIAL_WRITE);
return r;
}
int ssl_timeoutrehandshake(int t, int rfd, int wfd, SSL *ssl)
{
int r;
SSL_renegotiate(ssl);
r = ssl_timeoutio(SSL_do_handshake, t, rfd, wfd, ssl, NULL, 0);
if (r <= 0 || ssl->type == SSL_ST_CONNECT) return r;
/* this is for the server only */
ssl->state = SSL_ST_ACCEPT;
return ssl_timeoutio(SSL_do_handshake, t, rfd, wfd, ssl, NULL, 0);
}
int ssl_timeoutread(int t, int rfd, int wfd, SSL *ssl, char *buf, int len)
{
if (!buf) return 0;
if (SSL_pending(ssl)) return SSL_read(ssl, buf, len);
return ssl_timeoutio(SSL_read, t, rfd, wfd, ssl, buf, len);
}
int ssl_timeoutwrite(int t, int rfd, int wfd, SSL *ssl, char *buf, int len)
{
if (!buf) return 0;
return ssl_timeoutio(SSL_write, t, rfd, wfd, ssl, buf, len);
}
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